Near a critical point in a phase diagram, certain observables show characteristic fluctuations. The authors qualitatively predict how such fluctuations depend on the rapidity in relativistic heavy-ion collisions, and thereby present a distinctive observable to search for the critical endpoint in the QCD phase diagram. This is particularly relevant to the coming low-beam-energy scan at RHIC.

[Phys. Rev. C 98, 061901(R)] Published Thu Dec 13, 2018

]]>The main goal of this work is the determination of spins and parities of excited states in ${}^{97}\mathrm{Zr}$, among others the 2264.3-keV level, which had previously been tentatively reported as the $11/{2}^{-}$ excitation corresponding to the ${h}_{11/2}$ neutron orbital. Low-spin excited states in ${}^{97}\mathrm{Zr}$ were populated via th...

[Phys. Rev. C 98, 064315] Published Thu Dec 13, 2018

]]>In this paper, we study charged-current deep-inelastic scattering of muon neutrinos off ${}^{56}\mathrm{Fe}$ nuclei by using the Hirai, Kumano, and Saito model. The LHA parton distribution functions (PDFs) - CT10 are used to describe the partonic content of hadrons. Modification of PDFs inside the nuclei is done by...

[Phys. Rev. C 98, 065503] Published Thu Dec 13, 2018

]]>The Coulomb excitation of the neutron-rich nucleus ${}^{70}\mathrm{Ni}$ was measured in inverse kinematics at $260A\phantom{\rule{4pt}{0ex}}\mathrm{MeV}$ bombarding energy and with a ${}^{197}\mathrm{Au}$ target. The beam energy allowed us to study the dipole response around the neutron separation energy (up to about 12 MeV). The experiment was performed at the RIKE...

[Phys. Rev. C 98, 064313] Published Tue Dec 11, 2018

]]>Inspired by the newly discovered isomeric states in the rare-earth neutron-rich nuclei, high-$K$ isomeric states in neutron-rich samarium and gadolinium isotopes are investigated within the framework of the cranked shell model (CSM) with pairing correlation treated by a particle-number-conserving (PNC...

[Phys. Rev. C 98, 064314] Published Tue Dec 11, 2018

]]>**Background:** The tensor interaction is known to play an important role in the nuclear structure studies of exotic nuclei. However, most microscopic studies of low-energy nuclear reactions neglect the tensor force, resulting in a lack of knowledge concerning the effect of the tensor force on heavy-ion...

[Phys. Rev. C 98, 064607] Published Tue Dec 11, 2018

]]>We construct parameter sets of the relativistic mean-field model fitted to the recent constraints on the asymmetry energy $J$ and the slope parameter $L$ for pure neutron matter. We find cases of unphysical behavior, i.e., the appearance of negative pressures, for stiff parameter sets with low values of...

[Phys. Rev. C 98, 065804] Published Tue Dec 11, 2018

]]>We have studied nuclear matter with a new M3Y-type effective nucleon-nucleon interaction based on the lowest order constrained variational approach (LOCV) as the principal investigating tool. The chosen interaction, called B3Y-Fetal, has been used in its DDM3Y1, BDM3Y0, BDM3Y1, BDM3Y2, and BDM3Y3 de...

[Phys. Rev. C 98, 064001] Published Mon Dec 10, 2018

]]>Trace formulas for the contributions of degenerate periodic-orbit families to the semiclassical level density in truncated spherical hard-wall potentials are derived. In addition to the portion of the continuous periodic-orbit family contribution which persists after truncation, end-point correction...

[Phys. Rev. C 98, 064310] Published Mon Dec 10, 2018

]]>Making use of the semiclassical periodic orbit theory (POT), we propose, for the first time, a method to exclusively evaluate the shell effects associated with each of the nascent fragments (prefragments) generated by the neck formation in nuclear fission processes. In spite of the strong indication...

[Phys. Rev. C 98, 064311] Published Mon Dec 10, 2018

]]>A low-energy enhancement of radiative strength functions was observed in experiment in several mass regions of nuclei, and it is believed to impact considerably the calculated neutron-capture rates. In the shell-model framework it was demonstrated to be possibly due to the magnetic dipole radiation....

[Phys. Rev. C 98, 064312] Published Mon Dec 10, 2018

]]>The nuclear mean-field potential built up by the ${}^{12}\mathrm{C}+{}^{12}\mathrm{C}$ interaction at energies relevant for the carbon burning process is calculated in the double-folding model (DFM) using the realistic ground-state density of ${}^{12}\mathrm{C}$ and the CDM3Y3 density dependent nucleon-nucleon (NN) interaction, with the rearran...

[Phys. Rev. C 98, 064604] Published Mon Dec 10, 2018

]]>We have studied the $\alpha $-decay properties of superheavy nuclei $Z=121$ in the range $265\le A\le 316$. A detailed study of competition between $\alpha $ decay and fission enables us to identify the possible isotopes for superheavy element $Z=121$. The nuclei ${}^{299\u2013304}121$ were found to have long half-lives and hence they cou...

[Phys. Rev. C 98, 064605] Published Mon Dec 10, 2018

]]>Experiments searching for neutrinoless double $\beta $ decay ($0\nu \beta \beta $) require precise energy calibration and extremely low backgrounds. One of the most popular isotopes for $0\nu \beta \beta $ experiments is ${}^{136}\mathrm{Xe}$. In support of these experiments, the neutron inelastic scattering properties of this isotope have been measur...

[Phys. Rev. C 98, 064606] Published Mon Dec 10, 2018

]]>Effects of strong longitudinal color fields (SLCF) on the identified (anti)particle transverse momentum (${p}_{T}$) distributions in $pp$ collision at $\sqrt{s}=7\phantom{\rule{0.16em}{0ex}}\mathrm{TeV}$ are investigated within the framework of the HIJING/$B\overline{B}$ v2.0 model. The comparison with the experiment is performed in terms of the correlation between...

[Phys. Rev. C 98, 064903] Published Mon Dec 10, 2018

]]>Xe+Xe collision at relativistic energies may provide us with a partonic system whose size is approximately in between those produced by $p+p$ and Pb+Pb collisions. The experimental results on anisotropic flow in Xe+Xe and Pb+Pb collisions should provide us with an opportunity to study the system size ...

[Phys. Rev. C 98, 064904] Published Mon Dec 10, 2018

]]>Effective Hamiltonians and effective electroweak operators are calculated with the Okubo-Lee-Suzuki formalism for two-nucleon systems. Working within a harmonic oscillator basis, first without and then with a confining harmonic oscillator trap, we demonstrate the effects of renormalization on observ...

[Phys. Rev. C 98, 065502] Published Mon Dec 10, 2018

]]>**Background:** The ${}^{51}\mathrm{Fe}(p,\gamma ){}^{52}\mathrm{Co}$ reaction lies along the main rp-process path leading up to the ${}^{56}\mathrm{Ni}$ waiting point. The uncertainty in the reaction $Q$ value, which determines the equilibrium between the forward proton-capture and reverse photodisintegration ${}^{52}\mathrm{Co}(\gamma ,p){}^{51}\mathrm{Fe}$ reaction, contributes to conside...

[Phys. Rev. C 98, 065803] Published Mon Dec 10, 2018

]]>The proton-unbound argon and chlorine isotopes have been studied by measuring trajectories of their decay-in-flight products by using a tracking technique with microstrip detectors. The proton ($1p$) and two-proton ($2p$) emission processes have been detected in the measured angular correlations “heavy-...

[Phys. Rev. C 98, 064308] Published Fri Dec 07, 2018

]]>Prospects of experimental studies of argon and chlorine isotopes located far beyond the proton dripline are studied by using systematics and cluster models. The deviations from the widespread systematics observed in ${}^{28,29}\mathrm{Cl}$ and ${}^{29,30}\mathrm{Ar}$ have been theoretically substantiated, and analogous deviations ...

[Phys. Rev. C 98, 064309] Published Fri Dec 07, 2018

]]>The uncertainty quantifications of theoretical results are of great importance in making meaningful comparisons of those results with experimental data and making predictions in experimentally unknown regions. By quantifying uncertainties, one can make more solid statements about, e.g., origins of d...

[Phys. Rev. C 98, 061301(R)] Published Thu Dec 06, 2018

]]>For the first time the excitation cross section of ${}^{115}\mathrm{In}$ to its first excited state at 336.24 keV has been measured with monoenergetic photon beams at 15 energies between 1.8 and 3.7 MeV. The measurements were performed at the High-Intensity Gamma-ray Source ($\mathrm{HI}\gamma \mathrm{S}$) facility with natural In targets a...

[Phys. Rev. C 98, 064305] Published Thu Dec 06, 2018

]]>Recently, a microscopically motivated nuclear energy density functional was derived by applying the density-matrix expansion to the Hartree-Fock (HF) energy obtained from long-range chiral effective-field theory two- and three-nucleon interactions. However, the HF approach cannot account for all man...

[Phys. Rev. C 98, 064306] Published Thu Dec 06, 2018

]]>To study whether long-lived superheavy nuclei could really exist around $Z=120$ and $N=184$, the competition between $\alpha $ decay and spontaneous fission in the region $104\le Z\le 124$ are systemically studied. The $\alpha $-decay half-lives are investigated by employing a generalized liquid drop model and the analytical u...

[Phys. Rev. C 98, 064307] Published Thu Dec 06, 2018

]]>High-energy nuclear reactions enable us to produce a large variety of hypernuclei through the capture of hyperons by nuclear residues. We explore the statistical disintegration of such hypernuclear systems and the connection of fragment production to the binding energies of hyperons. It has been dem...

[Phys. Rev. C 98, 064603] Published Thu Dec 06, 2018

]]>We consider alternative modes of two-neutrino and neutrinoless double-$\beta $ decays in which one $\beta $ electron goes over to a continuous spectrum and the other occupies a vacant bound level of the daughter ion. We calculate the corresponding phase-space factors of the final states, estimate the partial deca...

[Phys. Rev. C 98, 065501] Published Thu Dec 06, 2018

]]>I have systematically investigated the equations of state (EOSs) in nuclear statistical equilibrium under thermodynamic conditions relevant for core collapse of massive stars by varying the bulk properties of nuclear matter, the mass data for neutron-rich nuclei, and the finite-temperature modificat...

[Phys. Rev. C 98, 065802] Published Thu Dec 06, 2018

]]>We introduce the formalism to describe heavy-ion double-charge-exchange (DCE) processes in the eikonal approximation. We focus on the low-momentum-transfer limit, corresponding to the differential cross section at $\theta ={0}^{\circ}$, and for the first time, we show that it is possible to factorize the DCE cross s...

[Phys. Rev. C 98, 061601(R)] Published Wed Dec 05, 2018

]]>We measured the ${}^{8}\mathrm{Li}(p,p){}^{8}\mathrm{Li}$, ${}^{8}\mathrm{Li}(p,d){}^{7}\mathrm{Li}$, and ${}^{8}\mathrm{Li}(p,\alpha ){}^{5}\mathrm{He}$ reactions at low energies using the thick target inverse kinematics method, with a polyethylene ${\left[{\mathrm{CH}}_{2}\right]}_{n}$ target and a radioactive ${}^{8}\mathrm{Li}$ beam available at the Radioactive Ion Beams in Brazil facility of São Paulo. By measuring simultaneously sever...

[Phys. Rev. C 98, 064601] Published Wed Dec 05, 2018

]]>In relativistic heavy-ion collisions, the production of heavy quarks at large transverse momenta is strongly suppressed compared to proton-proton collisions. In addition, an unexpectedly large azimuthal anisotropy was observed for the emission of charmed hadrons in noncentral collisions. Both observ...

[Phys. Rev. C 98, 064901] Published Wed Dec 05, 2018

]]>The data on hadron transverse momentum spectra in different centrality classes of p + Pb collisions at $\sqrt{{s}_{\mathrm{NN}}}=5.02$ TeV have been analyzed to extract the freeze-out hypersurface within a simultaneous chemical and kinetic freeze-out scenario. The freeze-out hypersurface has been extracted for three freez...

[Phys. Rev. C 98, 064902] Published Wed Dec 05, 2018

]]>[Phys. Rev. C 98, 069901] Published Wed Dec 05, 2018

]]>The double Gamow-Teller strength distributions in even-$A$ calcium isotopes were calculated using the nuclear shell model by applying the single Gamow-Teller operator two times sequentially on the ground state of the parent nucleus. The number of intermediate states actually contributing to the result...

[Phys. Rev. C 98, 064301] Published Tue Dec 04, 2018

]]>Algebraic collective model (ACM) calculations for the even-even selenium isotopes ${}^{86,88}\mathrm{Se}$ have been performed to describe collective properties of these two transitional nuclei with only two and four valence neutrons, respectively. From the perspective of the ACM the nuclei turn out to be only weakl...

[Phys. Rev. C 98, 064304] Published Tue Dec 04, 2018

]]>**Background:** Elastic scattering is a very important process to understand nuclear interactions in finite nuclei. Despite decades of efforts, the goal of reaching a coherent description of this physical process in terms of microscopic forces is still far from being completed.

**Purpose:** In previous pape...

[Phys. Rev. C 98, 064602] Published Tue Dec 04, 2018

]]>We calculate the intraband electromagnetic transitions in the framework of a collective Hamiltonian for chiral and wobbling modes. By going beyond the mean-field approximation on the orientations of the rotational axis, the collective Hamiltonian provides descriptions of both the yrast band and coll...

[Phys. Rev. C 98, 064302] Published Mon Dec 03, 2018

]]>A simple two-state mixing model has been applied to members of the two lowest ${0}^{+}$ rotational bands in ${}^{106,108}\mathrm{Pd}$. Unique solutions are found for the ${0}^{+}$ and ${2}^{+}$ mixing in both cases, and for the *E*2 matrix elements connecting the basis states. The lower basis-state band is found to be somewhat more colle...

[Phys. Rev. C 98, 064303] Published Mon Dec 03, 2018

]]>We examine the effects of the isovector-vector coupling and hypercharge-vector coupling in quark matter on hadron-quark coexistence in neutron-star matter. The relativistic mean field theory with the TM1 parameter set and an extended TM1 parameter set are used to describe hadronic matter, and the Na...

[Phys. Rev. C 98, 065801] Published Mon Dec 03, 2018

]]>This paper reports the results of the first measurements of the differential cross section of the ${}^{80}\mathrm{Se}(\gamma ,n){}^{79}\mathrm{Se}$ reaction with a linearly polarized gamma-ray ($\gamma $-ray) beam. The cross section was measured at three incident $\gamma $-ray beam energies: 15.6, 15.8, and 16.0 MeV, with a beam energy spread of 3.0%...

[Phys. Rev. C 98, 054621] Published Fri Nov 30, 2018

]]>The charge-independence breaking of the nuclear interaction is analyzed by means of energy differences among analog states in $T=1$ isobaric multiplets. Data on triplet energy differences in the $sd,pf$, and $pfg$ shells, i.e., $18\le A\le 66$, are reproduced with very good accuracy by large-scale shell-model ca...

[Phys. Rev. C 98, 054322] Published Thu Nov 29, 2018

]]>The $2\alpha +t$ cluster structure in ${}^{11}\mathrm{B}$ is investigated by the microscopic generator coordinate method with the Brink cluster wave functions. With a proper choice of the parameters of the effective interaction, the calculated energy spectrum shows reasonable agreement with the observed low-lying spectra o...

[Phys. Rev. C 98, 054323] Published Thu Nov 29, 2018

]]>Fluctuations of the baryon number in relativistic heavy-ion collisions are a promising observable to explore the structure of the QCD phase diagram. The cumulant ratios in heavy-ion collisions at intermediate energies ($\sqrt{{s}_{\mathit{NN}}}<5$ GeV) have not been studied to date. We investigate the effects of mean-f...

[Phys. Rev. C 98, 054620] Published Thu Nov 29, 2018

]]>We present an approach to derive effective shell-model interactions from microscopic nuclear forces. The similarity transformed coupled-cluster Hamiltonian decouples the single-reference state of a closed-shell nucleus and provides us with a core for the shell model. We use a second similarity trans...

[Phys. Rev. C 98, 054320] Published Wed Nov 28, 2018

]]>Neutron-activated sources of ${}^{103}\mathrm{Ru}$ and ${}^{103}\mathrm{Pd}$ both share the isomeric first-excited state in ${}^{103}\mathrm{Rh}$ as a daughter product. From independent measurements of both decays, we have measured the $K$ shell and total internal-conversion coefficients, ${\alpha}_{K}$ and ${\alpha}_{T}$, for the 39.8-keV $E3$ transition, which de-excites ...

[Phys. Rev. C 98, 054321] Published Wed Nov 28, 2018

]]>We investigate the nonlocal structure of optical model potentials for nucleon-nucleus scattering based on microscopic approaches. To this purpose, *in medium* folding optical potentials are calculated in momentum space and their corresponding coordinate-space counterpart are examined, paying special a...

[Phys. Rev. C 98, 054616] Published Wed Nov 28, 2018

]]>The Pauli rearrangement potential given by the second-order diagram is evaluated for a nucleon optical model potential (OMP) with $G$ matrices of the nucleon-nucleon interaction in chiral effective field theory. The results obtained in nuclear matter are applied for ${}^{40}\mathrm{Ca}$ in a local-density approximati...

[Phys. Rev. C 98, 054617] Published Wed Nov 28, 2018

]]>Based on an extended Skyrme interaction that includes the terms in relative momenta up to sixth order, corresponding to the so-called Skyrme pseudopotential up to next-to-next-to-next-to leading order (N3LO), we derive the expressions of Hamiltonian density and single-nucleon potential under general...

[Phys. Rev. C 98, 054618] Published Wed Nov 28, 2018

]]>Photoneutron cross sections were measured for ${}^{58}\mathrm{Ni},{}^{60}\mathrm{Ni},{}^{61}\mathrm{Ni}$, and ${}^{64}\mathrm{Ni}$ at energies between the one-neutron and two-neutron thresholds using quasimonochromatic $\gamma $-ray beams produced in laser Compton scattering at the NewSUBARU synchrotron radiation facility. These photoneutron data are used to extract...

[Phys. Rev. C 98, 054619] Published Wed Nov 28, 2018

]]>For a quark-gluon plasma to form in nuclear collisions, the resulting partonic medium must be dense, and its constituents must interact. The authors examined proton-proton collisions at LHC energies, and focused on the production of charm quarks, since these are only produced in hard perturbative QCD interactions. The results indicate the formation of an interacting medium that is dense enough for the suppression of radiation to set in and yet permits multiple scatterings among partons. Their study shows the importance of multiple parton interactions even in proton-proton collisions.

[Phys. Rev. C 98, 054910] Published Wed Nov 28, 2018

]]>An interpretation of the charge-dependent correlations sensitive to the chiral magnetic effect (CME)—–the separation of the electric charges along the system magnetic field (across the reaction plane)—–is ambiguous due to possible large background (non-CME) effects. The background contribution is pr...

[Phys. Rev. C 98, 054911] Published Wed Nov 28, 2018

]]>The annihilation of a lepton pair into a proton-antiproton pair, and the time-reverse process allow for a measurement of the timelike proton form factors (FFs). This work aims at studying the corrections due to direct soft interactions between the proton and the antiproton before their annihilation ...

[Phys. Rev. C 98, 055204] Published Wed Nov 28, 2018

]]>We treat ${}^{6}\mathrm{Li}$ as an effective three-body $\left(n\text{\u2212}p\text{\u2212}\alpha \right)$ system and compute the $d\text{\u2212}\alpha \phantom{\rule{4pt}{0ex}}S$-wave scattering length and three-body separation energy of ${}^{6}\mathrm{Li}$ for a wide variety of nucleon-nucleon and $\alpha $-nucleon potentials which have the same (or nearly the same) phase shifts. The Coulomb interaction in the $p\text{\u2212}\alpha $ subsyste...

[Phys. Rev. C 98, 051001(R)] Published Tue Nov 27, 2018

]]>Axial breathing modes are studied within the nuclear energy-density-functional theory to discuss the modification of the nucleon effective mass produced beyond the mean-field approximation. This analysis is performed with the subtracted second random-phase approximation (SSRPA) model applied to two ...

[Phys. Rev. C 98, 051303(R)] Published Tue Nov 27, 2018

]]>Recent high-precision mass measurements and shell-model calculations [M. Brodeur *et al.*, Phys. Rev. Lett. **108**, 212501 (2012)] have challenged a longstanding explanation for the requirement of a cubic isobaric multiplet mass equation for the lowest $A=9$ isospin quartet. The conclusions relied upon th...

[Phys. Rev. C 98, 051302(R)] Published Mon Nov 26, 2018

]]>We derive from the subleading contributions to the chiral three-nucleon force [short-range terms and relativistic corrections, published in Phys. Rev. C **84**, 054001 (2011)] a density-dependent two-nucleon interaction ${V}_{\text{med}}$ in isospin-symmetric nuclear matter. The momentum and ${k}_{f}$-dependent potentials a...

[Phys. Rev. C 98, 054002] Published Mon Nov 26, 2018

]]>The temperature dependence of the volume and surface components of the nuclear symmetry energy (NSE) and their ratio is investigated in the framework of the local density approximation. The results of these quantities for finite nuclei are obtained within the coherent density fluctuation model (CDFM...

[Phys. Rev. C 98, 054315] Published Mon Nov 26, 2018

]]>We present results of centroid energies ${E}_{\mathrm{CEN}}$, of the isoscalar ($T=0$) and isovector ($T=1$) giant resonances of multipolarities $L=0\u20133$ in ${}^{40,48}\mathrm{Ca},{}^{68}\mathrm{Ni},{}^{90}\mathrm{Zr},{}^{116}\mathrm{Sn},{}^{144}\mathrm{Sm}$, and ${}^{208}\mathrm{Pb}$, calculated within the fully self-consistent Hartree-Fock-based random phase approximation theory, using 33 different Sky...

[Phys. Rev. C 98, 054316] Published Mon Nov 26, 2018

]]>I have computed spectroscopic factors $S$ and single-particle widths ${\mathrm{\Gamma}}_{\mathrm{sp}}$, and hence expected decay widths ${\mathrm{\Gamma}}_{\mathrm{calc}}=S{\mathrm{\Gamma}}_{\mathrm{sp}}$ for decay of the lowest $5/{2}^{+}$ state of ${}^{15}\mathrm{Be}$ to the ground state and first ${2}^{+}$ state of ${}^{14}\mathrm{Be}$. Results indicate that decay to the ${2}^{+}$ state should be appreciable.

[Phys. Rev. C 98, 054317] Published Mon Nov 26, 2018

]]>The Coulomb shift is analyzed for the mirror cluster systems of ${}^{18}\mathrm{O}=\alpha +{}^{14}\mathrm{C}$ and ${}^{18}\mathrm{Ne}=\alpha +{}^{14}\mathrm{O}$ by applying the orthogonality condition model (OCM). The OCM calculation clearly predicts the suppressed excitation energy of the higher ${0}^{+}$ states in the proton-rich system of ${}^{18}\mathrm{Ne}$. This results can be interpret...

[Phys. Rev. C 98, 054318] Published Mon Nov 26, 2018

]]>The decreasing proton and charge densities from around 5.0 fm towards the center of ${}^{204,206}\mathrm{Hg}$ are investigated by a covariant density functional theory at the beyond mean-field level. The charge-density difference between ${}^{208}\mathrm{Pb}$ and ${}^{204}\mathrm{Hg}$ is improved significantly and a central depression is still vi...

[Phys. Rev. C 98, 054319] Published Mon Nov 26, 2018

]]>The bremsstrahlung of photons emitted during the scattering of ${\pi}^{+}$ mesons off nuclei is studied for the first time. The role of interactions between ${\pi}^{+}$ mesons and nuclei in the formation of the bremsstrahlung emission is analyzed in detail. We discover an essential contribution of photons emitted fro...

[Phys. Rev. C 98, 054613] Published Mon Nov 26, 2018

]]>We develop a Boltzmann-Uehling-Uhlenbeck (BUU) transport model based on the $\mathrm{Sk}\chi {\mathrm{m}}^{*}$ energy density functional, which is constructed from fitting the nuclear equation of state and nucleon effective masses in asymmetric nuclear matter predicted by the two- and three-body chiral interactions as well as t...

[Phys. Rev. C 98, 054614] Published Mon Nov 26, 2018

]]>**Background:** Recently, a systematic exploration of two-neutron transfer induced by the $\left({}^{18}\mathrm{O},\phantom{\rule{0.16em}{0ex}}{}^{16}\mathrm{O}\right)$ reaction on different targets has been performed. The high-resolution data have been collected at the MAGNEX magnetic spectrometer of the INFN-LNS Laboratory in Catania and analyzed with the coupled react...

[Phys. Rev. C 98, 054615] Published Mon Nov 26, 2018

]]>Using our developed new relativistic viscous hydrodynamics code, we investigate the temperature dependence of shear and bulk viscosities from comparison with the ALICE data: single-particle spectra and collective flows of Pb+Pb $\sqrt{{s}_{NN}}=2.76$ TeV collisions at the Large Hadron Collider. We find that from ...

[Phys. Rev. C 98, 054906] Published Mon Nov 26, 2018

]]>Isobaric ${}_{44}{}^{96}\mathrm{Ru}\phantom{\rule{0.16em}{0ex}}+\phantom{\rule{0.16em}{0ex}}{}_{44}{}^{96}\mathrm{Ru}$ and ${}_{40}{}^{96}\mathrm{Zr}\phantom{\rule{0.16em}{0ex}}+\phantom{\rule{0.16em}{0ex}}{}_{40}{}^{96}\mathrm{Zr}$ collisions were performed at the Relativistic Heavy Ion Collider in 2018. Using the “a multiphase transport” model with nuclear structures calculated by the density functional theory (DFT), we make predictions for the charged hadron multiplicity distributions...

[Phys. Rev. C 98, 054907] Published Mon Nov 26, 2018

]]>The dilepton emission in heavy-ion reactions at low beam energies is examined within a hadronic transport approach. In this article, the production of electron-positron pairs from a new approach named SMASH (Simulating Many Accelerated Strongly-interacting Hadrons) is introduced. The dilepton emissi...

[Phys. Rev. C 98, 054908] Published Mon Nov 26, 2018

]]>We analyze the newest data from the NA61/SHINE Collaboration which, in addition to previous results on pions and kaons, include mean multiplicities of $p$, $\mathrm{\Lambda}$, and $\varphi $ mesons produced in inelastic proton-proton ($p+p$) interactions at $\sqrt{{s}_{NN}}=6.3\text{\u2013}17.3\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$. The canonical ensemble formulation of the ideal hadron ...

[Phys. Rev. C 98, 054909] Published Mon Nov 26, 2018

]]>In the quantum statistical parton distribution approach proposed more than one decade ago to describe the parton structure, new properties are now understood; in particular the relation between quarks and antiquarks leads to very specific properties. The simultaneous treatment of unpolarized and pol...

[Phys. Rev. C 98, 055202] Published Mon Nov 26, 2018

]]>In the framework of the chiral quark model, we investigate the hidden strange pentaquark system of the $N\varphi $ state with quantum numbers of $I{J}^{P}=\frac{1}{2}{\frac{3}{2}}^{-}$. The results show that the $N\varphi $ state can be bound through the interaction of the $\sigma $ meson exchange plus the effect of channel coupling, which means that the...

[Phys. Rev. C 98, 055203] Published Mon Nov 26, 2018

]]>**Background:** Discrepancies exist between the observed abundances of argon and calcium in oxygen-neon nova ejecta and those predicted by nova models. An improved characterization of the ${}^{38}\mathrm{K}(p,\gamma )\phantom{\rule{0.16em}{0ex}}{}^{39}\mathrm{Ca}$ reaction rate over the nova temperature regime ($\sim 0.1\u20130.4$ GK), and thus the nuclear structure of ${}^{39}\mathrm{Ca}$ ab...

[Phys. Rev. C 98, 055804] Published Mon Nov 26, 2018

]]>In this work, we study in detail the deconfinement phase transition that takes place in hot/dense nuclear matter in the context of neutron stars and proto-neutron stars (in which lepton fraction is fixed). The possibility of different mixtures of phases with different locally and globally conserved ...

[Phys. Rev. C 98, 055805] Published Mon Nov 26, 2018

]]>[Phys. Rev. C 98, 059902] Published Mon Nov 26, 2018

]]>The nuclear response theory for isospin-transfer modes in the relativistic particle-vibration coupling framework is extended to include coupling of single nucleons to isospin-flip (charge-exchange) phonons in addition to the usual neutral vibrations. This new coupling introduces dynamical pion and $\rho $...

[Phys. Rev. C 98, 051301(R)] Published Wed Nov 21, 2018

]]>Evidence of non-nucleonic degrees of freedom in nuclei has long been sought. The authors show that the use of relativistic (light-cone) wave functions for the ${\mathrm{\Delta}}^{++}$-${\mathrm{\Delta}}^{-}$ component of the deuteron leads to a shape of the signal for this contribution that is significantly different from the use of nonrelativistic wave functions in the $\overline{p}\phantom{\rule{0}{0ex}}d\to {\pi}^{-}\phantom{\rule{0}{0ex}}{\pi}^{-}\phantom{\rule{0}{0ex}}{\mathrm{\Delta}}^{++}$ reaction. Comparing with background reactions the results suggest that components as low as 0.3% could be observed.

[Phys. Rev. C 98, 054611] Published Wed Nov 21, 2018

]]>The ${}^{6}\mathrm{Be}$ continuum states were populated in the charge-exchange reaction ${}^{1}\mathrm{H}({}^{6}\mathrm{Li},{}^{6}\mathrm{Be})n$ collecting very high statistics data ($\sim 5\times {10}^{6}$ events) on the three-body $\alpha +p+p$ correlations. The ${}^{6}\mathrm{Be}$ excitation energy region below $\sim 3\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}$ is considered, where the data are dominated by contributions from the ${0}^{+}$ and ${2}^{+}$...

[Phys. Rev. C 98, 054612] Published Wed Nov 21, 2018

]]>Within the framework of the coalescence model based on the phase-space distributions of protons and neutrons generated from the iebe-vishnu hybrid model with ampt initial conditions, we study the spectra and elliptic flow of deuterons and helium-3 in relativistic heavy ion collisions at the BNL Rela...

[Phys. Rev. C 98, 054905] Published Wed Nov 21, 2018

]]>The astrophysical $S$ factor and reaction rate of the direct capture process $\alpha +d\phantom{\rule{4pt}{0ex}}\to \phantom{\rule{4pt}{0ex}}{}^{6}\mathrm{Li}+\gamma $, as well as the abundance of the ${}^{6}\mathrm{Li}$ element, are estimated in a three-body model. The initial state is factorized into the deuteron bound state and the $\alpha +d$ scattering state. The final nucleus ${}^{6}\mathrm{Li}$(${1}^{+}$) is described a...

[Phys. Rev. C 98, 055803] Published Wed Nov 21, 2018

]]>The lifetimes of the excited states belonging to the chiral-candidate doublet bands built on the $\pi {h}_{11/2}\otimes \nu {h}_{11/2}^{-1}$ configuration in ${}^{130}\mathrm{La}$ have been measured by applying the Doppler-shift attenuation method and the in-beam fast timing technique. Excited states were populated in the ${}^{121}\mathrm{Sb}({}^{12}\mathrm{C},3n)$ reacti...

[Phys. Rev. C 98, 054305] Published Tue Nov 20, 2018

]]>Recent high-resolution nuclear resonance fluorescence experiments performed on the even-even Chromium isotopes ${}^{50,52,54}\mathrm{Cr}$ have lead to the identification (energy, spin, parity, and transition strength) of altogether 108 nuclear levels of spin $J=1$ (70 levels with ${J}^{\pi}={1}^{-}$ and 38 with ${J}^{\pi}={1}^{+}$) at excitatio...

[Phys. Rev. C 98, 054314] Published Tue Nov 20, 2018

]]>Detailed information on isomeric states in $A\approx 135$ nuclei is exploited to benchmark shell-model calculations in the region northwest of doubly magic nucleus ${}^{132}\mathrm{Sn}$. The $N=79$ isotones ${}^{133}\mathrm{Xe}$ and ${}^{135}\mathrm{Ba}$ are studied after multinucleon transfer in the ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$ reaction employing the high-resolution Advanc...

[Phys. Rev. C 98, 054312] Published Mon Nov 19, 2018

]]>The structures of yrast normal-deformed (ND) bands in Hf isotopes have been investigated using the unpaired cranked Nilsson-Strutinsky (CNS), and the paired cranked Nilsson-Strutinsky-Bogoliubov (CNSB) models. New optimized Nilsson parameters have been derived and used in the models to interpret the...

[Phys. Rev. C 98, 054313] Published Mon Nov 19, 2018

]]>A study of photofission of ${}^{232}\mathrm{Th}$ and ${}^{238}\mathrm{U}$ was performed by using quasimonoenergetic, linearly polarized $\gamma $-ray beams from the High Intensity $\gamma $-ray Source at Triangle Universities Nuclear Laboratory. The prompt-photofission neutron polarization asymmetries, neutron multiplicities, and the photofission...

[Phys. Rev. C 98, 054609] Published Mon Nov 19, 2018

]]>In this theoretical study, we establish an interrelationship between the nucleon-nucleon potential and the nuclear fusion reaction cross sections at low energies. The axially deformed self-consistent relativistic mean field with nonlinear $\mathrm{NL}{3}^{*}$ and TM1 force parameters is used to calculate the densit...

[Phys. Rev. C 98, 054610] Published Mon Nov 19, 2018

]]>Production of ${\pi}^{0}$ and $\eta $ mesons has been measured at midrapidity in $\mathrm{Cu}+\mathrm{Au}$ collisions at $\sqrt{{s}_{{}_{NN}}}=200\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$. Measurements were performed in ${\pi}^{0}\left(\eta \right)\to \gamma \gamma $ decay channel in the $1\left(2\right)-20\phantom{\rule{0.28em}{0ex}}\text{GeV}/c$ transverse momentum range. A strong suppression is observed for ${\pi}^{0}$ and $\eta $ meson production at high transverse momentum in central...

[Phys. Rev. C 98, 054903] Published Mon Nov 19, 2018

]]>[Phys. Rev. C 98, 059901] Published Mon Nov 19, 2018

]]>The photoneutron cross sections of ${}^{162,163}\mathrm{Dy}$ have been measured for the first time in an energy region from the neutron threshold (${S}_{n}$) up to $\approx 13\phantom{\rule{0.16em}{0ex}}\mathrm{MeV}$. The $(\gamma ,n)$ reaction was induced with quasimonochromatic laser Compton-scattered $\gamma $ rays, produced at the NewSUBARU laboratory. The corresponding $\gamma $-ray st...

[Phys. Rev. C 98, 054310] Published Fri Nov 16, 2018

]]>We use a reference state based on symmetry-restored states from deformed mean-field or generator-coordinate-method (GCM) calculations in conjunction with the in-medium similarity-renormalization group (IMSRG) to compute spectra and matrix elements for neutrinoless double-beta ($0\nu \beta \beta $) decay. Because t...

[Phys. Rev. C 98, 054311] Published Fri Nov 16, 2018

]]>Isospin-relaxation times characterizing isospin transport processes between the projectile and the target with different $N/Z$ ratios and that between the neck and the spectator with different isospin asymmetries and densities in intermediate-energy heavy-ion collisions are studied within an isospin-d...

[Phys. Rev. C 98, 054608] Published Fri Nov 16, 2018

]]>The evolution of shapes and low-energy shape coexistence is analyzed in neutron-deficient Nd and Sm nuclei, using a five-dimensional quadrupole collective Hamiltonian (5DCH). Deformation energy surfaces, calculated with the relativistic energy density functional PC-PK1 and a separable finite-range p...

[Phys. Rev. C 98, 054308] Published Thu Nov 15, 2018

]]>**Background:** While a large-scale shell model calculation (LSSM) is a powerful model to describe the nuclear spectroscopic information, it requires a huge amount of computational resources. As an efficient approximation framework to the LSSM, we have introduced the variational Monte Carlo (VMC) method...

[Phys. Rev. C 98, 054309] Published Thu Nov 15, 2018

]]>We construct a multiplicity distribution characterized by large factorial cumulants (integrated correlation functions) from a simple combination of two ordinary multiplicity distributions characterized by small factorial cumulants. We find that such a model, which could be interpreted as representin...

[Phys. Rev. C 98, 054901] Published Thu Nov 15, 2018

]]>We measured direct photons for ${p}_{T}<5\phantom{\rule{3.33333pt}{0ex}}\mathrm{GeV}/c$ in minimum bias and 0%–40% most-central events at midrapidity for $\mathrm{Cu}+\mathrm{Cu}$ collisions at $\sqrt{{s}_{{}_{NN}}}=200\phantom{\rule{4pt}{0ex}}\mathrm{GeV}$. The ${e}^{+}{e}^{-}$ contribution from quasireal direct virtual photons has been determined as an excess over the known hadronic contributions in the ${e}^{+}{e}^{-}$ mass distributi...

[Phys. Rev. C 98, 054902] Published Thu Nov 15, 2018

]]>We investigate the charge-dependent flow induced by magnetic and electric fields in heavy-ion collisions. We simulate the evolution of the expanding cooling droplet of strongly coupled plasma hydrodynamically, using the iEBE-VISHNU framework, and add the magnetic and electric fields as well as the e...

[Phys. Rev. C 98, 055201] Published Thu Nov 15, 2018

]]>The γ-emission probability of the 66.73 keV line in the decay of ${}^{171}\mathrm{Tm}$ has been experimentally determined using γ spectrometry and inductively coupled mass spectrometry. Using a set of two reference sources, namely ${}^{60}\mathrm{Co}$ as primary standard and ${}^{44}\mathrm{Ti}/{}^{44}\mathrm{Sc}$ in secular equilibrium as secondary standard, ...

[Phys. Rev. C 98, 055802] Published Thu Nov 15, 2018

]]>A number of fission products possess isomeric states which have a nuclear spin significantly different from that of the ground state. The yield ratio of these states following fission is influenced by the angular momentum present in the fissioning system. The ${}^{134m,134}\mathrm{Sb}$ yield ratio had not been prev...

[Phys. Rev. C 98, 054307] Published Wed Nov 14, 2018

]]>In this paper, we extend the framework of the improved version of a simplified method to take into account the tensor contribution $\left(i\mathrm{SMT}\right)$ and propose the AQCM-T, a tensor version of the antisymmetrized quasicluster model (AQCM). Although the AQCM-T is phenomenological, we can treat the ${}^{3}\mathrm{S}\text{\u2212}{}^{3}\mathrm{D}$ couplin...

[Phys. Rev. C 98, 054306] Published Tue Nov 13, 2018

]]>The knowledge of prompt fission $\gamma $-ray emission has been of major interest in reactor physics for a few years. Only few experimental spectra were published until now for fast-neutron-induced fission, and measurements would be also valuable in order to improve our understanding of the fission process....

[Phys. Rev. C 98, 054604] Published Fri Nov 09, 2018

]]>Distributions of the largest fragment charge are studied using the ALADIN data on fragmentation of ${}^{197}\mathrm{Au}$ projectiles at relativistic energies. The statistical measures skewness and kurtosis of higher-order fluctuations provide a robust indication of the transition point, linked to a phase transition...

[Phys. Rev. C 98, 054606] Published Fri Nov 09, 2018

]]>**Background**: The precompound emission process in light-ion fusion interactions has been a topic of considerable interest to nuclear physicists for many years. Although widespread theoretical and experimental efforts have been devoted to understand the reaction dynamics of precompound emission, no sys...

[Phys. Rev. C 98, 054607] Published Fri Nov 09, 2018

]]>**Background:** Observation of lepton number violation via detection of neutrinoless double $\beta $ decay requires that the neutrino be a Majorana particle. If the neutrino is a Dirac particle, a potential lepton-number violating process is neutrinoless quadruple $\beta $ decay. Only a few nuclei can undergo neutrin...

[Phys. Rev. C 98, 055501] Published Fri Nov 09, 2018

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