**Background:** The deuteron plays a pivotal role in nuclear and hadronic physics, as both the simplest bound multinucleon system and as an effective neutron target. Quasielastic electron scattering on the deuteron is a benchmark reaction to test our understanding of deuteron structure and the propertie…

[Phys. Rev. C 95, 024005] Published Fri Feb 24, 2017

]]>Studies of the $\gamma $-ray strength functions can reveal useful information concerning underlying nuclear structure. Accumulated experimental data on the strength functions show an enhancement in the low $\gamma $ energy region. We have calculated the $M1$ strength functions for the ${}^{49,50}\mathrm{Cr}$ and ${}^{48}\mathrm{V}$ nuclei in the ${f}_{7\dots}$

[Phys. Rev. C 95, 024322] Published Fri Feb 24, 2017

]]>We perform a detailed analysis of the fundamental mode of nonradial pulsations of color flavor locked strange stars. Solving the general relativistic equations for nonradial pulsations for an equation of state derived within the MIT bag model, we calculate the frequency and the gravitational damping…

[Phys. Rev. C 95, 025808] Published Fri Feb 24, 2017

]]>We investigate the influences of the nuclear composition on the weak interaction rates of heavy nuclei during the core collapse of massive stars. The nuclear abundances in nuclear statistical equilibrium (NSE) are calculated by some equation of state (EOS) models including in-medium effects on nucle…

[Phys. Rev. C 95, 025809] Published Fri Feb 24, 2017

]]>It is argued that final state enhancements in production reactions at large momentum transfers, such as $pp\to {K}^{+}\mathrm{\Lambda}p$, are primarily sensitive to the position of a virtual bound state pole in the $\mathrm{\Lambda}p$ system rather than the $\mathrm{\Lambda}p$ scattering length and effective range. These arguments are supported by a study o…

[Phys. Rev. C 95, 024004] Published Thu Feb 23, 2017

]]>We construct a simple model of heavy-ion collisions, local in the impact parameter plane, and appropriate for energies available at the CERN Super Proton Synchrotron (SPS). This model can be regarded as a new realization of the “fire-streak” approach, originally applied to studies of lower-energy nu…

[Phys. Rev. C 95, 024908] Published Thu Feb 23, 2017

]]>Modern experimental facilities have provided a tremendous volume of reaction data, often with wide energy and angular coverage, and with increasing precision. For reactions with two hadrons in the final state, these data are often presented as multiple sets of panels, with angular distributions at n…

[Phys. Rev. C 95, 025205] Published Thu Feb 23, 2017

]]>[Phys. Rev. C 95, 029902] Published Thu Feb 23, 2017

]]>Excited levels of ${}^{88}\mathrm{Br}$ populated in the $\beta $ decay of ${}^{88}\mathrm{Se}$ have been studied by means of $\beta \gamma $ and $\gamma \gamma $ spectroscopy methods. Neutron-rich parent ${}^{88}\mathrm{Se}$ nuclei were produced with proton-induced fission of ${}^{238}\mathrm{U}$ using the Ion Guide Isotope Separator On-Line (IGISOL) method and separated from contaminants using …

[Phys. Rev. C 95, 024321] Published Wed Feb 22, 2017

]]>The multinucleon transfer reaction has been investigated within the dinuclear system model. The nucleon transfer is coupled to the dissipation of relative motion energy and angular momentum by solving a set of microscopically derived master equations. A barrier distribution approach is implemented i…

[Phys. Rev. C 95, 024615] Published Wed Feb 22, 2017

]]>By using the $R$-matrix approach we calculate the radiative width for a resonance decaying to a bound state through electric-dipole $E1$ transitions. The total radiative width is determined by the interference of the nuclear internal and external radiative width amplitudes. For a given channel radius th…

[Phys. Rev. C 95, 024616] Published Wed Feb 22, 2017

]]>The lifetime of the recently discovered $2p$ emitter ${}^{67}\mathrm{Kr}$ was found to be considerably below the lower limit predicted theoretically. This communication addresses this issue. Different separation energy systematics are analyzed and different mechanisms for $2p$ emission are evaluated. We find that the m…

[Phys. Rev. C 95, 021601(R)] Published Tue Feb 21, 2017

]]>We investigate the decay of ${}^{87,88}\mathrm{Br}$ and ${}^{94}\mathrm{Rb}$ using total absorption $\gamma $-ray spectroscopy. These important fission products are $\beta $-delayed neutron emitters. Our data show considerable $\beta \gamma $ intensity, so far unobserved in high-resolution $\gamma $-ray spectroscopy, from states at high excitation energy. We also fi…

[Phys. Rev. C 95, 024320] Published Tue Feb 21, 2017

]]>**Background:** Although uncertainty quantification has been making its way into nuclear theory, these methods have yet to be explored in the context of reaction theory. For example, it is well known that different parameterizations of the optical potential can result in different cross sections, but th…

[Phys. Rev. C 95, 024611] Published Tue Feb 21, 2017

]]>**Background:** The isobaric ratio difference scaling phenomenon, which has been found for the fragments produced in projectile fragmentation reactions, is related to the nuclear density change in reaction systems.

**Purpose:** To verify whether the isobaric ratio difference scaling exists in the fragments …

[Phys. Rev. C 95, 024612] Published Tue Feb 21, 2017

]]>The internal excitation of nuclei after multinucleon transfer is estimated by using the time-dependent mean-field theory. Transfer probabilities for each channel as well as the energy loss after reseparation are calculated. By combining these two pieces of information, we show that the excitation en…

[Phys. Rev. C 95, 024613] Published Tue Feb 21, 2017

]]>Nuclear modification factors ${R}_{\mathrm{cp}}$ of protons and pions are investigated by simulating Au+Au collisions from $0.8A$ to $1.8A$ GeV in a framework of an isospin-dependent quantum molecular dynamics (IQMD) model. The ${R}_{\mathrm{cp}}$ of protons rise with an increase in the transverse particle momentum ${p}_{T}$ at different bea…

[Phys. Rev. C 95, 024614] Published Tue Feb 21, 2017

]]>We present a dynamical scheme for hadronization with first-order confinement phase transition. The thermodynamical conditions of phase equilibrium, the fluid velocity profile, and the dissipative effect determine the macroscopic changes of the parton volume and the corresponding hadron volume during…

[Phys. Rev. C 95, 024907] Published Tue Feb 21, 2017

]]>Using the observation of four transiently-accreting neutron stars, the authors provide (under simple assumptions) a lower limit for the star core heat capacity. The limit rules out a large fraction of the core being made up of a quark color-flavor-locked phase. Future observations during cooling periods between accretion outbursts will further constrain the heat capacity and neutrino cooling luminosity of the core.

[Phys. Rev. C 95, 025806] Published Tue Feb 21, 2017

]]>The study of the ${}^{17}\mathrm{O}(n,\alpha ){}^{14}\mathrm{C}$ reaction has been performed by means of the Trojan horse method (THM) applied to the quasifree ${}^{2}\mathrm{H}\left({}^{17}\mathrm{O},\alpha {}^{14}\mathrm{C}\right){}^{1}\mathrm{H}$ reaction induced at a beam energy of 43.5 MeV. The THM allowed us to study the 8121-keV ${}^{18}\mathrm{O}^{*}$ resonant level, for which the previous THM investigation pointed out…

[Phys. Rev. C 95, 025807] Published Tue Feb 21, 2017

]]>We present the first application of the newly developed extended Kuo-Krenciglowa (EKK) theory of the effective nucleon-nucleon interaction to shell-model studies of exotic nuclei, including those where conventional approaches with fitted interactions encounter difficulties. This EKK theory enables u…

[Phys. Rev. C 95, 021304(R)] Published Fri Feb 17, 2017

]]>The recent measurements of high energy photodisintegration of a ${}^{3}\mathrm{He}$ nucleus to a $pd$ pair at ${90}^{\circ}$ center of mass demonstrated an energy scaling consistent with the quark counting rule with an unprecedentedly large exponent of ${s}^{-17}$. To understand the underlying mechanism of this process, we extended th…

[Phys. Rev. C 95, 024609] Published Fri Feb 17, 2017

]]>The neutron-induced reaction cross sections of ${}^{242m}\mathrm{Am}$ were measured at the Los Alamos Neutron Science Center using the Detector for Advanced Neutron-Capture Experiments array along with a compact parallel-plate avalanche counter for fission-fragment detection. A new neutron-capture cross section was…

[Phys. Rev. C 95, 024610] Published Fri Feb 17, 2017

]]>By using halo effective field theory (EFT), an expansion in ${R}_{\text{core}}/{R}_{\text{halo}}$, where ${R}_{\text{core}}$ is the radius of the core and ${R}_{\text{halo}}$ the radius of the halo nucleus, the charge and neutron form factors of the two-neutron halo nuclei ${}^{11}\mathrm{Li},{}^{14}\mathrm{Be}$, and ${}^{22}\mathrm{C}$ are calculated to next-to-leading order (NLO) by treating th…

[Phys. Rev. C 95, 024318] Published Thu Feb 16, 2017

]]>**Background:** Aspects of the nuclear structure of light $\alpha $-conjugate nuclei have long been associated with nuclear clustering based on $\alpha $ particles and heavier $\alpha $-conjugate systems such as ${}^{12}\mathrm{C}$ and ${}^{16}\mathrm{O}$. Such structures are associated with strong deformation corresponding to superdeformed or even hyperdefo…

[Phys. Rev. C 95, 024319] Published Thu Feb 16, 2017

]]>The half-life of the $15/{2}_{1}^{+}$ state of the 3-valence-proton nucleus ${}^{135}\mathrm{I}$ has been measured to be 1.74(8) ns using the EXILL-FATIMA mixed array of Ge and ${\mathrm{LaBr}}_{3}$ detectors. The nuclei were produced following the cold neutron-induced fission of a ${}^{235}\mathrm{U}$ target at the PF1B beam line of the Institut Laue-Lang…

[Phys. Rev. C 95, 021302(R)] Published Wed Feb 15, 2017

]]>A cluster-transfer experiment ${}^{9}\mathrm{Be}({}^{9}\mathrm{Be},{}^{14}\mathrm{C}^{*}\to \alpha +{}^{10}\mathrm{Be}){}^{4}\mathrm{He}$ was carried out using an incident beam energy of 45 MeV. This reaction channel has a large $Q$ value that favors populating the high-lying states in ${}^{14}\mathrm{C}$ and separating various reaction channels. A number of resonant states are reconstructed from th…

[Phys. Rev. C 95, 021303(R)] Published Wed Feb 15, 2017

]]>We develop a method to construct a microscopic optical potential from chiral interactions for nucleon-nucleus scattering. The optical potential is constructed by combining the Green's function approach with the coupled-cluster method. To deal with the poles of the Green's function along the real ene…

[Phys. Rev. C 95, 024315] Published Wed Feb 15, 2017

]]>The high-spin structures and isomers of the $N=81$ isotones ${}^{135}\mathrm{Xe}$ and ${}^{137}\mathrm{Ba}$ are investigated after multinucleon-transfer (MNT) and fusion-evaporation reactions. Both nuclei are populated (i) in ${}^{136}\mathrm{Xe}+{}^{238}\mathrm{U}$ and (ii) ${}^{136}\mathrm{Xe}+{}^{208}\mathrm{Pb}$ MNT reactions employing the high-resolution Advanced Gamma Tracking Array (A…

[Phys. Rev. C 95, 024316] Published Wed Feb 15, 2017

]]>Bandhead energies of all the physically admissible low-lying two-quasiparticle configuration states in the doubly-odd heavy actinide ${}_{101}{}^{254}\mathrm{Md}_{153}$ are evaluated using the well-tested two-quasiparticle rotor model with explicit inclusion of the residual proton-neutron interaction. A critical examinatio…

[Phys. Rev. C 95, 024317] Published Wed Feb 15, 2017

]]>The temperature dependence of the symmetry energy for isotopic chains of even-even Ni, Sn, and Pb nuclei is investigated in the framework of the local density approximation (LDA). The Skyrme energy density functional with two Skyrme-class effective interactions, SkM* and SLy4, is used in the calcula…

[Phys. Rev. C 95, 024314] Published Tue Feb 14, 2017

]]>The absolute neutron-induced fission cross section of ${}^{242}\mathrm{Pu}$ was measured at five energies between 1 and 2.5 MeV at the low-scatter neutron measurement facility of the National Physical Laboratory, UK. The measurements are part of an effort to reduce uncertainties of nuclear data related to fast spec…

[Phys. Rev. C 95, 024606] Published Tue Feb 14, 2017

]]>Comparative assessment of the total breakup proton-emission cross sections measured for 56 MeV deuteron interaction with target nuclei from ${}^{12}\mathrm{C}$ to ${}^{209}\mathrm{Bi}$, with an empirical parametrization and recently calculated microscopic neutron-removal cross sections was done at the same time with similar data m…

[Phys. Rev. C 95, 024607] Published Tue Feb 14, 2017

]]>Measurements of fission product yields play an important role for the understanding of fundamental aspects of the fission process. Recently, neutron-induced fission product-yield data of ${}^{239}\mathrm{Pu}$ at energies below 4 MeV revealed an unexpected energy dependence of certain fission fragments. In order to …

[Phys. Rev. C 95, 024608] Published Tue Feb 14, 2017

]]>The EXO-200 Collaboration is searching for neutrinoless double $\beta $ decay using a liquid xenon (LXe) time projection chamber. This measurement relies on modeling the transport of charge deposits produced by interactions in the LXe to allow discrimination between signal and background events. Here we pr…

[Phys. Rev. C 95, 025502] Published Tue Feb 14, 2017

]]>[Phys. Rev. C 95, 029901] Published Tue Feb 14, 2017

]]>Two-neutrino double electron capture is a rare nuclear decay where two electrons are simultaneously captured from the atomic shell. For ${}^{124}\mathrm{Xe}$ this process has not yet been observed and its detection would provide a new reference for nuclear matrix element calculations. We have conducted a search for…

[Phys. Rev. C 95, 024605] Published Mon Feb 13, 2017

]]>Quark-gluon plasma produced at the early stage of ultrarelativistic heavy-ion collisions is unstable, if weakly coupled, due to the anisotropy of its momentum distribution. Chromomagnetic fields are spontaneously generated and can reach magnitudes much exceeding typical values of the fields in equil…

[Phys. Rev. C 95, 024906] Published Mon Feb 13, 2017

]]>In this work, the two-photon-exchange (TPE) effects in the unpolarized $\mu p$ scattering are discussed within the hadronic model where the intermediate states $N,\phantom{\rule{0.28em}{0ex}}\mathrm{\Delta}$, and $\sigma $ are considered. The contribution from the $N$ intermediate is close to the results given by Tomalak and Vanderhaeghen [Phys. Rev. D **90**, …

[Phys. Rev. C 95, 025203] Published Mon Feb 13, 2017

]]>By using the theoretical approaches that describe well the available data on $t$-integrated coherent photoproduction of light and heavy vector mesons in Pb-Pb ultraperipheral collisions (UPCs) at the Large Hadron Collider (LHC) in Run 1, we calculate the momentum transfer distributions for this proces…

[Phys. Rev. C 95, 025204] Published Mon Feb 13, 2017

]]>During the late stages of gravitational core-collapse of massive stars, extreme isospin asymmetries are reached within the core. Due to the lack of microscopic calculations of electron-capture (EC) rates for all relevant nuclei, in general simple analytic parametrizations are employed. We study here…

[Phys. Rev. C 95, 025805] Published Mon Feb 13, 2017

]]>Nucleon transfer reactions in deuteron-deuteron collisions at energies above the three- and four-body breakup threshold are described using exact four-body equations for transition operators that are solved in the momentum-space framework. Differential cross sections, analyzing powers, polarizations…

[Phys. Rev. C 95, 024003] Published Fri Feb 10, 2017

]]>A new method to solve the Dirac equation on a 3D lattice is proposed, in which the variational collapse problem is avoided by the inverse Hamiltonian method and the fermion doubling problem is avoided by performing spatial derivatives in momentum space with the help of the discrete Fourier transform…

[Phys. Rev. C 95, 024313] Published Fri Feb 10, 2017

]]>The suppression of $\mathrm{{\rm Y}}$ mesons in the hot quark-gluon plasma (QGP) versus reduced feed-down is investigated in UU collisions at energies currently available at the BNL Relativistic Heavy Ion Collider and PbPb collisions at energies available at the CERN Large Hadron Collider. Our centrality- and ${p}_{\text{T}}$-dep…

[Phys. Rev. C 95, 024905] Published Fri Feb 10, 2017

]]>Precise measurements of superallowed ${0}^{+}\to {0}^{+}$ $\beta $ decay presently provide the most precise value for the weak mixing amplitude ${V}_{u\phantom{\rule{0}{0ex}}d}$. As the largest element of the CKM matrix, ${V}_{u\phantom{\rule{0}{0ex}}d}$ is a critical piece of the Standard Model of the electroweak interaction. The new, precise Penning-trap mass measurement of the decay energy for the superallowed transition in ${}^{42}$Sc opens the door for a much more precise $f\phantom{\rule{0}{0ex}}t$ value determination if its half-life can be measured more precisely as well.

[Phys. Rev. C 95, 025501] Published Fri Feb 10, 2017

]]>The ${\beta}^{-}$ decay of ${}^{34}\mathrm{Mg}$ was used to study the ${}^{34}\mathrm{Al}$ nucleus through $\gamma $ spectroscopy at the Isotope Separator On-Line facility of CERN. Previous studies identified two $\beta $-decaying states in ${}^{34}\mathrm{Al}$ having spin-parity assignments ${J}^{\pi}={4}^{-}$ dominated by the normal configuration $\pi {\left({d}_{5/2}\right)}^{-1}\otimes \nu \left({f}_{7/2}\right)$ and ${J}^{\pi}={1}^{+}$ by the in…

[Phys. Rev. C 95, 021301(R)] Published Thu Feb 09, 2017

]]>Lifetimes of the ${4}_{1}^{+}$ states in ${}^{62,64}\mathrm{Fe}$ and the $11/{2}_{1}^{-}$ states in ${}^{61,63}\mathrm{Co}$ and ${}^{59}\mathrm{Mn}$ were measured at the Grand Accélérateur National d'Ions Lourds (GANIL) facility by using the Advanced Gamma Tracking Array (AGATA) and the large-acceptance variable mode spectrometer (VAMOS++). The states were populated…

[Phys. Rev. C 95, 024312] Published Thu Feb 09, 2017

]]>**Background:** Non-compound-nucleus fission in the preactinide region has been an active area of investigation in the recent past. Based on the measurements of fission-fragment mass distributions in the fission of ${}^{202}\mathrm{Po}$, populated by reactions with varying entrance channel mass asymmetry, the onset of …

[Phys. Rev. C 95, 024604] Published Thu Feb 09, 2017

]]>We have studied elliptic flow $\left({v}_{2}\right)$ of $\varphi $ mesons in the framework of a multiphase transport (AMPT) model at CERN Large Hadron Collider (LHC) energy. In the realms of AMPT model we observe that $\varphi $ mesons at intermediate transverse momentum $\left({p}_{T}\right)$ deviate from the previously observed [at the BNL Relativist…

[Phys. Rev. C 95, 024904] Published Thu Feb 09, 2017

]]>The Dalitz decay ${\pi}^{0}\to {e}^{+}{e}^{-}\gamma $ has been measured in the $\gamma p\to {\pi}^{0}p$ reaction with the A2 tagged-photon facility at the Mainz Microtron, MAMI. The value obtained for the slope parameter of the ${\pi}^{0}$ electromagnetic transition form factor, ${a}_{\pi}=0.030\pm 0.{010}_{\mathrm{tot}}$, is in agreement with existing measurements of this decay…

[Phys. Rev. C 95, 025202] Published Thu Feb 09, 2017

]]>The triton point charge radius is calculated to next-to-next-to-leading order (NNLO) in pionless effective field theory $(\mathrm{EFT}\left(\pi \phantom{\rule{-0.6em}{0ex}}/\right))$, yielding a prediction of $1.14\pm 0.19$ fm (leading order), $1.59\pm 0.08$ fm (next-to leading order), and $1.62\pm 0.03$ fm (NNLO) in agreement with the current experimental extractio…

[Phys. Rev. C 95, 024002] Published Wed Feb 08, 2017

]]>Low-lying excited states in ${}^{38,40}\mathrm{P}$ have been identified in the $\beta $ decay of ${T}_{z}=+5,\phantom{\rule{0.16em}{0ex}}+6,{}^{38,40}\mathrm{Si}$. Based on the allowed nature of the Gamow-Teller (GT) decay observed, these states are assigned spin and parity of ${1}^{+}$ and are core-excited 1p1h intruder states with a parity opposite to the ground state. The …

[Phys. Rev. C 95, 024308] Published Wed Feb 08, 2017

]]>In the present work, I investigate the influence of neutron mass reduction due to magnetic field on the equation of state of neutron matter using the lowest-order constraint variational (LOCV) method with the $A{V}_{18}$ potential.

[Phys. Rev. C 95, 024309] Published Wed Feb 08, 2017

]]>The distorted-wave Born approximation formalism for the description of the $(e,{e}^{\prime}\gamma )$ reaction, in which emitted photons and scattered electrons are simultaneously detected, is outlined. Both the Coulomb and the magnetic scattering are fully taken into account. The influence of electron bremsstrahlung …

[Phys. Rev. C 95, 024310] Published Wed Feb 08, 2017

]]>Resonances play critical roles in the formation of many physical phenomena, and many techniques have been developed for the exploration of resonances. In a recent letter [Phys. Rev. Lett. **117**, 062502 (2016)], we proposed a new method for probing single-particle resonances by solving the Dirac equati…

[Phys. Rev. C 95, 024311] Published Wed Feb 08, 2017

]]>Comparison of hydrodynamic and “hybrid” $\text{hydrodynamics}+\text{transport}$ calculations with heavy-ion data inevitably requires the conversion of the fluid to particles. For dissipative fluids the conversion is ambiguous without additional theory input complementing hydrodynamics. We obtain self-consistent she…

[Phys. Rev. C 95, 024903] Published Wed Feb 08, 2017

]]>In chiral effective field theory the leading order (LO) nucleon-nucleon potential includes two contact terms, in the two spin channels $S=0,1$, and the one-pion-exchange potential. When the pion degrees of freedom are integrated out, as in the pionless effective field theory, the LO potential includes…

[Phys. Rev. C 95, 024001] Published Tue Feb 07, 2017

]]>**Background:**The discovery of neutrinoless double-$\beta $ ($0\nu \beta \beta $) decay would demonstrate the nature of neutrinos, have profound implications for our understanding of matter-antimatter mystery, and solve the mass hierarchy problem of neutrinos. The calculations for the nuclear matrix elements ${M}^{0\nu}$ of $0\nu \beta \beta $ dec…

[Phys. Rev. C 95, 024305] Published Tue Feb 07, 2017

]]>The contribution of the two-phonon configurations to the ground state of ${}^{4}\mathrm{He}$ and ${}^{16}\mathrm{O}$ is evaluated nonperturbatively using a Hartree-Fock basis within an equation-of-motion phonon method using a nucleon-nucleon optimized chiral potential. Convergence properties of energies and root-mean-square radii …

[Phys. Rev. C 95, 024306] Published Tue Feb 07, 2017

]]>This work generalizes the generator coordinate method to include ($\beta $,$\gamma $) deformation parameters together with two-quasiparticle excitations. The simultaneous consideration of collective as well as single particle degrees of freedom allows one to describe soft and rigid nuclei as well as the transition region in between. The results agree well with the experimental data for erbium isotopes ranging from very soft to very rigid shapes.

[Phys. Rev. C 95, 024307] Published Tue Feb 07, 2017

]]>The equation of state of baryon-symmetric hadronic matter with hard-sphere interactions is studied. It is assumed that mesons $M$ are pointlike, but baryons $B$ and antibaryons $\overline{B}$ have the same hard-core radius ${r}_{B}$. Three possibilities are considered: (1) the $BB$ and $B\overline{B}$ interactions are the same; (2) bar…

[Phys. Rev. C 95, 024902] Published Tue Feb 07, 2017

]]>**Background:** The emergence of hyperon degrees of freedom in neutron star matter has been associated to first-order phase transitions in some phenomenological models, but conclusions on the possible physical existence of an instability in the strangeness sector are strongly model dependent.

**Purpose:** T…

[Phys. Rev. C 95, 025201] Published Tue Feb 07, 2017

]]>The pairing anti-halo effect is a phenomenon that a pairing correlation suppresses a divergence of nuclear radius, which happens for single-particle states with orbital angular momenta of $l=0$ and 1 in the limit of vanishing binding energy. While this effect has mainly been discussed in terms of Hart…

[Phys. Rev. C 95, 024304] Published Mon Feb 06, 2017

]]>The properties of neutron stars are investigated within the relativistic central variational method by using a realistic nucleon-nucleon ($NN$) interaction. The strong repulsion of realistic $NN$ interactions at short distances is treated by a Jastrow central correlation function, whose form is complete…

[Phys. Rev. C 95, 025804] Published Mon Feb 06, 2017

]]>We present solutions of the BCS gap equation in the channels ${}^{1}S_{0}$ and ${}^{3}P_{2}\u2013{}^{3}F_{2}$ in neutron matter based on nuclear interactions derived within chiral effective field theory (EFT). Our studies are based on a representative set of nonlocal nucleon-nucleon (NN) plus three-nucleon (3N) interactions up to n…

[Phys. Rev. C 95, 024302] Published Fri Feb 03, 2017

]]>Nuclear forces strongly break spin and spatial symmetries such as $S$, $L$, SU(3), and SU(4). However, calculations have previously revealed that quasi-dynamical symmetry holds, resulting in a relatively constant pattern of breaking within an excitation band. The authors use this to illuminate the change of structure in chromium isotopes as they undergo an abrupt change in the moment of inertia, also known as backbending.

[Phys. Rev. C 95, 024303] Published Fri Feb 03, 2017

]]>Quark-gluon plasmas produced in relativistic heavy-ion collisions quickly expand and cool, entering a phase consisting of multiple interacting hadronic resonances just below the QCD deconfinement temperature, $T\sim 155$ MeV. Numerical microscopic simulations have emerged as the principal method for model…

[Phys. Rev. C 95, 024901] Published Fri Feb 03, 2017

]]>A new measurement of the angular distribution of neutron elastic scattering on deuterium was carried out at the neutron time-of-flight facility nELBE. The backward-forward asymmetry of the reaction was investigated via the direct detection of neutrons scattered at the laboratory angle of ${15}^{\circ}$ and ${165}^{\dots}$

[Phys. Rev. C 95, 024601] Published Thu Feb 02, 2017

]]>The influence of single-neutron stripping on the near-barrier elastic scattering angular distributions for the ${}^{6,8}\mathrm{He}+{}^{208}\mathrm{Pb}$ systems is investigated through coupled reaction channels (CRC) calculations fitting recently published data to explore the differences in the absorptive potential found in the …

[Phys. Rev. C 95, 024602] Published Thu Feb 02, 2017

]]>Theoretical models of the $(d,p)$ reaction are exploited for both nuclear astrophysics and spectroscopic studies in nuclear physics. Usually, these reaction models use local optical model potentials to describe the nucleon- and deuteron-target interactions. Within such a framework, the importance of t…

[Phys. Rev. C 95, 024603] Published Thu Feb 02, 2017

]]>The cross section of the ${}^{23}\mathrm{Na}(n,\gamma ){}^{24}\mathrm{Na}$ reaction was measured via the activation method at the Karlsruhe 3.7 MV Van de Graaff accelerator. NaCl samples were exposed to quasistellar neutron spectra at $kT=5.1$ and 25 keV produced via the ${}^{18}\mathrm{O}(p,n){}^{18}\mathrm{F}$ and ${}^{7}\mathrm{Li}(p,n){}^{7}\mathrm{Be}$ reactions, respectively. The derived c…

[Phys. Rev. C 95, 025803] Published Thu Feb 02, 2017

]]>[Phys. Rev. C 95, 020001] Published Wed Feb 01, 2017

]]>Excited states have been observed for the first time in the neutron-deficient nucleus ${}^{117}\mathrm{Ba}$ using the recoil-decay tagging technique following the heavy-ion fusion-evaporation reaction ${}^{64}\mathrm{Zn}$(${}^{58}\mathrm{Ni}$, 2p3n)${}^{117}\mathrm{Ba}$. Prompt $\gamma $ rays have been assigned to ${}^{117}\mathrm{Ba}$ through correlations with $\beta $-delayed protons follow…

[Phys. Rev. C 95, 024301] Published Wed Feb 01, 2017

]]>We extend our virial approach to study the neutral-current neutrino response of nuclear matter at low densities. In the long-wavelength limit, the virial expansion makes model-independent predictions for neutrino-nucleon scattering rates and the density ${S}_{V}$ and spin ${S}_{A}$ responses. We find that ${S}_{A}$ is s…

[Phys. Rev. C 95, 025801] Published Wed Feb 01, 2017

]]>To systematically examine the possible maximum mass of neutron stars, which is one of the important properties characterizing the physics in high-density regions, I construct neutron star models by adopting phenomenological equations of state with various values of nuclear saturation parameters for …

[Phys. Rev. C 95, 025802] Published Wed Feb 01, 2017

]]>Cross sections of the radiative proton capture reaction ${}^{9}\mathrm{Be}(p,\gamma )$, leading to the low-lying excited states in ${}^{10}\mathrm{B}$ with isospin $T=0$ and 1, have been measured over the proton energy range of 7 to 20 MeV. For this, the method of coincidence between the primary and the secondary $\gamma $ rays has been used. The…

[Phys. Rev. C 95, 014614] Published Tue Jan 31, 2017

]]>We present ${}^{8}\mathrm{B}+{}^{27}\mathrm{Al}$ elastic scattering angular distributions for the proton-halo nucleus ${}^{8}\mathrm{B}$ at two energies above the Coulomb barrier, namely ${E}_{\mathrm{lab}}=15.3$ and 21.7 MeV. The experiments were performed in the Radioactive Ion Beams in Brasil facility (RIBRAS) in São Paulo, and in the TwinSol facility at th…

[Phys. Rev. C 95, 014615] Published Tue Jan 31, 2017

]]>In the nuclear mass range $A\approx 60$ to 90 of the solar abundance distribution the weak $s$-process component is the dominant contributor. In this scenario, which is related to massive stars, the overall neutron exposure is not sufficient for the $s$ process to reach mass flow equilibrium. Hence, abundances a…

[Phys. Rev. C 95, 015808] Published Tue Jan 31, 2017

]]>Using a multireflection time-of-flight mass spectrograph located after a gas cell coupled with the gas-filled recoil ion separator GARIS-II, the masses of several $\alpha $-decaying heavy nuclei were directly and precisely measured. The nuclei were produced via fusion-evaporation reactions and separated fro…

[Phys. Rev. C 95, 011305(R)] Published Mon Jan 30, 2017

]]>The ${}^{56}\mathrm{Fe}(n,\gamma )$ thermal neutron capture cross section and the ${}^{57}\mathrm{Fe}$ level scheme populated by this reaction have been investigated in this work. Singles $\gamma $-ray spectra were measured with an isotopically enriched ${}^{56}\mathrm{Fe}$ target using the guided cold neutron beam at the Budapest Reactor, and $\gamma \gamma $-coincidence d…

[Phys. Rev. C 95, 014328] Published Mon Jan 30, 2017

]]>The evolution of level structures due to the unique parity orbitals ${g}_{9/2}$, ${h}_{11/2}$, and ${i}_{13/2}$ in odd-mass nuclei from Zn to Am is studied within a unified framework, by correlations between ratios of excitation energies in both odd-mass nuclei and their even-even core nuclei. These plots reveal regular…

[Phys. Rev. C 95, 014329] Published Mon Jan 30, 2017

]]>States in ${}^{209}\mathrm{Tl}$ were populated using a multinucleon transfer reaction with a ${}^{136}\mathrm{Xe}$ beam impinging on a thick ${}^{208}\mathrm{Pb}$ target at $E=785$ MeV. The beam was pulsed at 825-ns intervals in order to perform isomer decay spectroscopy. The known ${J}^{\pi}=17/{2}^{+}$ isomer in ${}^{209}\mathrm{Tl}$ was located at 1228(4) keV and measured to…

[Phys. Rev. C 95, 014330] Published Mon Jan 30, 2017

]]>With the $R{}^{3}\mathrm{B}$-LAND setup at GSI we have measured exclusive relative-energy spectra of the Coulomb dissociation of ${}^{18}\mathrm{C}$ at a projectile energy around $425A$ MeV on a lead target, which are needed to determine the radiative neutron-capture cross sections of ${}^{17}\mathrm{C}$ into the ground state of ${}^{18}\mathrm{C}$. Those data hav…

[Phys. Rev. C 95, 014613] Published Mon Jan 30, 2017

]]>Fluctuations and correlations of conserved charges are sensitive observables for studying the QCD phase transition and critical point in high-energy heavy-ion collisions. We have studied the centrality and energy dependence of mixed cumulants (up to fourth order) between net baryon and net strangene…

[Phys. Rev. C 95, 014914] Published Mon Jan 30, 2017

]]>We have followed up on our previous measurements of upscattering of ultracold neutrons (UCNs) from a series of gases by making measurements of total cross sections on the following gases hydrogen, ethane, methane, isobutene, $n$-butane, ethylene, water vapor, propane, neopentane, isopropyl alcohol, an…

[Phys. Rev. C 95, 015501] Published Mon Jan 30, 2017

]]>The inclusive production of $\mathrm{\Lambda}$ hyperons in proton-proton collisions at $\sqrt{s}=3.18\phantom{\rule{0.16em}{0ex}}\mathrm{GeV}$ was measured with HADES at the GSI Helmholtzzentrum für Schwerionenforschung in Darmstadt. The experimental data are compared to a data-based model for individual exclusive $\mathrm{\Lambda}$ production channels in the same reaction. The…

[Phys. Rev. C 95, 015207] Published Fri Jan 27, 2017

]]>We present results of large-scale shell-model calculations for the $A=129$ hole nuclei below ${}^{132}\mathrm{Sn}$. We discuss structures of ${}^{129}\mathrm{Sn}$, ${}^{129}\mathrm{In}$, and ${}^{129}\mathrm{Cd}$ with emphasis on the monopole effects and excitations across the neutron $N=82$ shell gap, and further predict low-lying levels for the more exotic ${}^{129}\mathrm{Ag}$. …

[Phys. Rev. C 95, 011304(R)] Published Thu Jan 26, 2017

]]>Isochronous mass spectrometry was applied to measure isomeric yield ratios of fragmentation reaction products. This approach is complementary to conventional $\gamma $-ray spectroscopy in particular for measuring yield ratios for long-lived isomeric states. Isomeric yield ratios for the high-spin $I=19/2\hslash $ st…

[Phys. Rev. C 95, 014610] Published Thu Jan 26, 2017

]]>We investigate the clustering effects in light mass $N=Z$ and $N\ne Z$ composite systems ${}^{20}\mathrm{Ne}^{*},{}^{28}\mathrm{Si}^{*},{}^{40}\mathrm{Ca}^{*}$ and ${}^{21,22}\mathrm{Ne}^{*},{}^{39}\mathrm{K}^{*}$, respectively, formed in low-energy heavy ion reactions at different excitation energies, within the collective clusterization approach of the dynamical cluster-decay model (DCM) …

[Phys. Rev. C 95, 014611] Published Thu Jan 26, 2017

]]>**Background:** Fission process with heavier projectiles and actinide targets has contributions from processes, such as compound nucleus fission, transfer-induced fission, and noncompound nucleus fission. Mass distribution and mass-dependent anisotropy can be used to identify and delineate the contribut…

[Phys. Rev. C 95, 014612] Published Thu Jan 26, 2017

]]>**Background:** $\alpha $-nucleus potentials play an essential role in the calculation of $\alpha $-induced reaction cross sections at low energies in the statistical model. Uncertainties of these calculations are related to ambiguities in the adjustment of the potential parameters to experimental elastic scattering an…

[Phys. Rev. C 95, 015807] Published Thu Jan 26, 2017

]]>The low-lying, low-spin levels of ${}^{76}\mathrm{Ge}$ were studied with the $\left(n,{n}^{\prime}\gamma \right)$ reaction. Gamma-ray excitation function measurements were performed at incident neutron energies from 1.6 to 3.7 MeV, and $\gamma $-ray angular distributions were measured at neutron energies of 3.0 and 3.5 MeV. From these measurements, le…

[Phys. Rev. C 95, 014327] Published Wed Jan 25, 2017

]]>We show that the rotation axis of a triaxial nucleus may flip from the intermediate axis ($\gamma =-{30}^{\circ}$) to the smallest axis ($\gamma =+{30}^{\circ}$) due to the polarization by an aligned $T=0\phantom{\rule{0.28em}{0ex}}np$ pair. The example we discuss is the triaxial $N=Z$ nucleus ${}^{64}\mathrm{Ge}$ where the isoscalar $\pi \left({g}_{9/2}\right)\otimes \nu \left({g}_{9/2}\right)$ pair aligns to ${i}^{\pi}={9}^{+}$ in ${}^{66}\mathrm{As}$ a…

[Phys. Rev. C 95, 011303(R)] Published Tue Jan 24, 2017

]]>**Background:** Ab initio many-body methods have been developed over the past ten years to address mid-mass nuclei. In their best current level of implementation, their accuracy is of the order of a few percent error on the ground-state correlation energy. Recently implemented variants of these methods …

[Phys. Rev. C 95, 014326] Published Tue Jan 24, 2017

]]>**Background:** The radioactive ${}^{220}\mathrm{Th}^{*}$ compound nucleus (CN) is of interest since the evaporation residue (ER) cross sections are available for various entrance channels ${}^{16}\mathrm{O}+{}^{204}\mathrm{Pb}$, ${}^{40}\mathrm{Ar}+{}^{180}\mathrm{Hf}$, ${}^{48}\mathrm{Ca}+{}^{172}\mathrm{Yb}$, and ${}^{82}\mathrm{Se}+{}^{138}\mathrm{Ba}$ at near barrier energies. Within the dynamical cluster-decay model (DCM), the radioa…

[Phys. Rev. C 95, 014609] Published Tue Jan 24, 2017

]]>We present the first predictions for sub-threshold open charm and charmonium production in nuclear collisions. The production mechanism is driven by multistep scatterings of nucleons and their resonance states, accumulating sufficient energy for the production of $J/\mathrm{\Psi}$, ${\mathrm{\Lambda}}_{c}+\overline{D}$, and $D+\overline{D}$. Our results ar…

[Phys. Rev. C 95, 014911] Published Tue Jan 24, 2017

]]>The freeze-out conditions in proton-proton collisions at $\sqrt{{s}_{\mathrm{NN}}}=200$, 900, and 7000 GeV have been extracted by fits to the mean hadron yields at midrapidity within the framework of the statistical model of an ideal gas of hadrons and resonances in the grand canonical ensemble. The variation of the extra…

[Phys. Rev. C 95, 014912] Published Tue Jan 24, 2017

]]>Using event-by-event hydrodynamic calculations, we find that the fluctuations of the elliptic flow $\left({v}_{2}\right)$ in the reaction plane have a negative skew. We compare the skewness of ${v}_{2}$ fluctuations to that of initial eccentricity fluctuations. We show that skewness is the main effect lifting the degeneracy…

[Phys. Rev. C 95, 014913] Published Tue Jan 24, 2017

]]>The competition between $\alpha $ and $\beta $ decays is investigated for neutron-deficient Pa, U, Np, and Pu isotopes. ${\beta}^{+}$/electron-capture (EC) decay rates are calculated within the deformed quasiparticle random-phase approximation with realistic nucleon-nucleon $\left(NN\right)$ interactions. Contributions from allowed Gamow…

[Phys. Rev. C 95, 014323] Published Mon Jan 23, 2017

]]>Hyperfine structure and isotope shifts have been measured for the ground and isomeric states in the neutron-deficient isotopes ${}^{179\u2013184}\mathrm{Tl}$ using the 276.9-nm transition. The experiment has been performed at the CERN-Isotope Separator On-Line facility using the in-source resonance-ionization laser spec…

[Phys. Rev. C 95, 014324] Published Mon Jan 23, 2017

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