Physical Review C

Excited states of ⁷⁶Ge have been populated in above-barrier Coulomb excitation and inelastic scattering of a 530-MeV ⁷⁶Ge beam on a ²³⁸U target and studied using in-beam γ-ray spectroscopy with the Gammasphere array. The γ band was extended considerably and one new band was identified. Comparisons o...

We find the height of the third fission barrier B_III and energy of the third minimum E_III in ²³²Th using the macroscopic-microscopic model, which is very well tested in this region of nuclei. For the first time it is done on an eight-dimensional deformation hypercube. The dipole distortion is includ...

Background: The calculation of the hyperon binding energy in hypernuclei is crucial to understanding the interaction between hyperons and nucleons.

Purpose: We assess the relative importance of two- and three-body hyperon-nucleon force by studying the effect of the hyperon-nucleon-nucleon interaction...

We introduce a unified approach to nuclear bound and continuum states based on the coupling of the no-core shell model (NCSM), a bound-state technique, with the no-core shell model/resonating group method (NCSM/RGM), a nuclear scattering technique. This new ab initio method, no-core shell model with...

Quantum Monte Carlo calculations of electromagnetic moments and transitions are reported for A≤9 nuclei. The realistic Argonne v₁₈ two-nucleon and Illinois-7 three-nucleon potentials are used to generate the nuclear wave functions. Contributions of two-body meson-exchange current (MEC) operators are...

We have performed shell-model calculations for the two one-valence-neutron isotones ¹³⁵Te and ¹³⁷Xe and the two one-valence-proton isotopes ^135,137Sb. The main aim of our study has been to investigate the evolution of single-particle states with increasing nucleon number. To this end, we have focuse...

Problems of production and study of new neutron-enriched heavy nuclei are discussed. Low-energy multinucleon transfer reactions are shown to be quite appropriate for this purpose. Reactions with actinide beams and targets are of special interest for synthesis of new neutron-enriched transfermium nuc...

Our earlier Faddeev three-body study in the K⁻-deuteron scattering length, A_K⁻d, is revisited here in light of the recent developments on two fronts: (i) the improved chiral unitary approach to the theoretical description of the coupled K̅ N related channels at low energies, and (ii) the new ...

We present the first ab initio coupled-cluster calculations of medium-mass nuclei with explicit chiral three-nucleon (3N) interactions. Using a spherical formulation of coupled cluster with singles and doubles excitations including explicit 3N contributions, we study ground states of ^16,24O, ^40,48Ca...

The ground state of neutron-rich unbound ¹³Li was observed for the first time in a one-proton removal reaction from ¹⁴Be at a beam energy of 53.6 MeV/u. The ¹³Li ground state was reconstructed from ¹¹Li and two neutrons giving a resonance energy of 120₋₈₀⁺⁶⁰ keV. All events involving single- and dou...

The prompt neutron and γ emission from primary fission fragments are calculated for thermal neutron induced fission of ²³⁵U and ²³⁹Pu and for spontaneous fission of ²⁵²Cf using a Monte Carlo Hauser-Feshbach approach for the evaporation of the excited fission fragments. Remaining free model parameter...

We present a microscopic calculation of the complete quasiparticle interaction, including central as well as noncentral components, in neutron matter from high-precision two- and three-body forces derived within the framework of chiral effective-field theory. The contributions from two-nucleon force...

This paper details the solar neutrino analysis of the 385.17-day phase-III data set acquired by the Sudbury Neutrino Observatory (SNO). An array of ³He proportional counters was installed in the heavy-water target to measure precisely the rate of neutrino-deuteron neutral-current interactions. This ...

The single-neutron properties of N = 51 nuclei have been studied with the (d,p) and (α,³He) reactions, at beam energies of 15 and 50 MeV respectively, on ⁸⁸Sr, ⁹⁰Zr, and ⁹²Mo targets. The light reaction products were momentum analyzed using a conventional magnetic spectrometer. Additionally, the ²H(^...

We present a model of electron-positron pair production in pion-nucleon collisions in the exclusive reaction πN→Ne⁺e⁻. The model is based on an effective field theory approach, incorporating 16 baryon resonances below 2 GeV. Parameters of the model are fitted to pion photoproduction data. We present...

We calculate the electromagnetic form factors of the nucleon to third chiral order in manifestly Lorentz-invariant effective field theory. The ρ and ω mesons as well as the Δ(1232) resonance are included as explicit dynamical degrees of freedom. To obtain a self-consistent theory with respect to con...

Background: The density of the nucleus has been important in explaining the nuclear dependence of the quark distributions, also known as the EMC effect, as well as the presence of high-momentum nucleons arising from short-range correlations (SRCs). Recent measurements of both of these effects on lig...

Neutron star crusts are studied using a classical molecular dynamics model developed for heavy-ion reactions. After the model is shown to produce a plethora of the so-called pasta shapes, a series of techniques borrowed from nuclear physics, condensed matter physics, and topology is used to craft a ...

Background: Superallowed β-decay rates provide stringent constraints on physics beyond the standard model of particle physics. To extract crucial information about the electroweak force, small isospin-breaking corrections to the Fermi matrix element of superallowed transitions must be applied.

Purpos...

High-p_T hadrons produced in hard collisions and detected inclusively bear peculiar features: (i) they originate from jets whose initial virtuality and energy are of the same order and (ii) such jets are rare and have a very biased energy sharing among the particles, namely the detected hadron carrie...

Background: There has been much recent investigation into dijets at the Large Hadron Collider, but predictions for dijets at Relativistic Heavy Ion Collider (RHIC) scales are lacking.

Purpose: We present a systematic study of the dijet suppression at RHIC using the VNI/Bass-Müller-Srivastava parton c...

Background: There is a renewed experimental interest in antiproton-proton scattering with an intense, possibly polarized antiproton beam. On the theoretical side, significant progress has been made in the understanding of the nuclear force from chiral effective field theory.

Purpose: We provide a hig...

The Gamow-Teller (GT) strength distribution has been investigated in a high-resolution (³He,t) charge-exchange experiment on the double-beta (ββ) decaying nucleus ¹⁰⁰Mo. The experiment was carried out at the Osaka University Research Center for Nuclear Physics (RCNP) with a 420 MeV incident ³He beam...

Background: The β decays of ³H and ⁶He can play an important role in testing nuclear wave-function calculations and fixing low-energy constants in effective-field theory approaches. However, there exists a large discrepancy between previous measurements of the ⁶He half-life.

Purpose: Our measurement ...

Background: Gamow-Teller (GT) transition strength distributions in stable and unstable pf-shell isotopes are key inputs for estimating electron-capture rates important for stellar evolution. Charge-exchange experiments at intermediate beam energies have long been used to test theoretical predictions...

We introduce a generalization of the conventional renormalization schemes used in dimensional regularization, which illuminates the renormalization scheme and scale ambiguities of perturbative QCD predictions, exposes the general pattern of nonconformal {β_i} terms, and reveals a special degeneracy o...

We optimize the nucleon-nucleon interaction from chiral effective field theory at next-to-next-to-leading order (NNLO). The resulting new chiral force NNLO_opt yields χ²≈1 per degree of freedom for laboratory energies below approximately 125 MeV. In the A=3, 4 nucleon systems, the contributions of th...

The neutron-rich isotopes of cadmium up to the N=82 shell closure have been investigated by high-resolution laser spectroscopy. Deep-uv excitation at 214.5 nm and radioactive-beam bunching provided the required experimental sensitivity. Long-lived isomers are observed in ¹²⁷Cd and ¹²⁹Cd for the firs...

We study the electric conductivity of hot QCD matter at various temperatures T within the off-shell parton-hadron-string dynamics transport approach for interacting partonic, hadronic or mixed systems in a finite box with periodic boundary conditions. The response of the strongly interacting system ...

For the first time a single trapped antiproton (p̅ ) is used to measure the p̅ magnetic moment μ_p̅ . The moment μ_p̅ =μ_p̅ S/(ℏ/2) is given in terms of its spin S and the nuclear magneton (μ_N) by μ_p̅ /μ_N=-2.792 845±0.000 012. The 4.4 parts per million (ppm) u...

The Hoyle state plays a crucial role in the helium burning of stars that have reached the red giant stage. The close proximity of this state to the triple-alpha threshold is needed for the production of carbon, oxygen, and other elements necessary for life. We investigate whether this life-essential...

Various theories beyond the standard model predict new particles with masses in the sub-eV range with very weak couplings to ordinary matter. A parity-odd interaction between polarized nucleons and unpolarized matter proportional to g_Vg_As⃗·p⃗ is one such possibility, where s⃗ and p⃗ are the spin and...

Core-collapse theory brings together many facets of high-energy and nuclear astrophysics and the numerical arts to present theorists with one of the most important, yet frustrating, astronomical questions: “What is the mechanism of core-collapse supernova explosions?” A review of all the physics and the 50-year history involved would soon bury the reader in minutiae that could easily obscure the essential elements of the phenomenon, as we understand it today. Moreover, much remains to be discovered and explained, and a complicated review of an unresolved subject in flux could grow stale fast. Therefore, this paper describes various important facts and perspectives that may have escaped the attention of those interested in this puzzle. Furthermore, an attempt to describe the modern theory’s physical underpinnings and a brief summary of the current state of play are given. In the process, a few myths that have crept into modern discourse are identified. However, there is much more to do and humility in the face of this age-old challenge is clearly the most prudent stance as its eventual resolution is sought.

Previous explanations for the resonance behavior of ¹²C+¹²C fusion at low energies were based on a nonresonant compound-nucleus background and an additional contribution from a series of resonances. This separation into “resonance” and “background” contributions of the cross section is artificial. W...

Type Ia supernovae, sparked off by exploding white dwarfs of mass close to the Chandrasekhar limit, play the key role in understanding the expansion rate of the Universe. However, recent observations of several peculiar type Ia supernovae argue for its progenitor mass to be significantly super-Chand...

The g factor of lithiumlike silicon ²⁸Si¹¹⁺ has been measured in a triple-Penning trap with a relative uncertainty of 1.1×10^-9 to be g_exp⁡=2.000 889 889 9(21). The theoretical prediction for this value was calculated to be g_th=2.000 889 909(51) improving the accuracy to 2.5×10^-8 due to the first rig...

In anticipation of results from current and future double-β decay studies, we report a measurement resulting in a ⁸²Se double-β decay Q value of 2997.9(3) keV, an order of magnitude more precise than the currently accepted value. We also present preliminary results of a calculation of the ⁸²Se neutr...

In this Letter we report the first results on π^±, K^±, p, and p̅ production at midrapidity (|y|<0.5) in central Pb-Pb collisions at √s_NN=2.76  TeV, measured by the ALICE experiment at the LHC. The p_T distributions and yields are compared to previous results at √s_NN=200  GeV and expectation...

The excited state of the ¹²C nucleus known as the “Hoyle state” constitutes one of the most interesting, difficult, and timely challenges in nuclear physics, as it plays a key role in the production of carbon via fusion of three alpha particles in red giant stars. In this Letter, we present ab initi...

The suppression of the individual Υ(nS) states in PbPb collisions with respect to their yields in pp data has been measured. The PbPb and pp data sets used in the analysis correspond to integrated luminosities of 150  μb^-1 and 230  nb^-1, respectively, collected in 2011 by the CMS experiment at the L...

We introduce a novel photon production mechanism stemming from the conformal anomaly of QCD×QED and the existence of strong (electro)magnetic fields in heavy ion collisions. Using the hydrodynamical description of the bulk modes of QCD plasma, we show that this mechanism leads to the photon producti...

Classical novae are important contributors to the abundances of key isotopes, such as the radioactive ¹⁸F, whose observation by satellite missions could provide constraints on nucleosynthesis models in novae. The ¹⁷O(p,γ)¹⁸F reaction plays a critical role in the synthesis of both oxygen and fluorine...

The neutron-rich lead isotopes, up to ²¹⁶Pb, have been studied for the first time, exploiting the fragmentation of a primary uranium beam at the FRS-RISING setup at GSI. The observed isomeric states exhibit electromagnetic transition strengths which deviate from state-of-the-art shell-model calculat...

Two years after the discovery of element 117, we undertook a second campaign using the ²⁴⁹Bk+⁴⁸Ca reaction for further investigations of the production and decay properties of the isotopes of element 117 on a larger number of events. The experiments were started in the end of April 2012 and are stil...

The passage of muons through matter is dominated by the Coulomb interaction with electrons and nuclei. The interaction with the electrons leads to continuous energy loss and stopping of the muons. The interaction with nuclei leads to angle “diffusion.” Two muon-imaging methods that use flux attenuat...

Neutral-pion π⁰ spectra were measured at midrapidity (|y|<0.35) in Au+Au collisions at √s_NN=39 and 62.4 GeV and compared with earlier measurements at 200 GeV in a transverse-momentum range of 1<p_T<10  GeV/c. The high-p_T tail is well described by a power law in all cases, and the powers decr...

The transverse energy (E_T) in Pb-Pb collisions at 2.76 TeV nucleon-nucleon center-of-mass energy (√s_NN) has been measured over a broad range of pseudorapidity (η) and collision centrality by using the CMS detector at the LHC. The transverse energy density per unit pseudorapidity (dE_T/dη) increases f...

The E1-E2 interference sign between the E_c.m.=2.68-MeV E2 resonance and an underlying E1 strength has been measured for the first time. An E1-E2 asymmetry parameter of a=0.07±0.05 was extracted from the thick-target γ-ray yields of the narrow resonance at angles of 45° and 135°. The positive sign of...

Since its original postulation by Wolfgang Pauli in 1930, the neutrino has played a prominent role in our understanding of nuclear and particle physics. In the intervening 80 years, scientists have detected and measured neutrinos from a variety of sources, both man made and natural. Underlying all of these observations, and any inferences we may have made from them, is an understanding of how neutrinos interact with matter. Knowledge of neutrino interaction cross sections is an important and necessary ingredient in any neutrino measurement. With the advent of new precision experiments, the demands on our understanding of neutrino interactions is becoming even greater. The purpose of this article is to survey our current knowledge of neutrino cross sections across all known energy scales: from the very lowest energies to the highest that we hope to observe. The article covers a wide range of neutrino interactions including coherent scattering, neutrino capture, inverse beta decay, low-energy nuclear interactions, quasielastic scattering, resonant pion production, kaon production, deep inelastic scattering, and ultrahigh energy interactions. Strong emphasis is placed on experimental data whenever such measurements are available.

This Colloquium addresses the issue of the shape of hadrons and, in particular, that of the proton. The concept of shape in the microcosm is critically examined. Special attention is devoted to properly define the meaning of shape for bound-state systems of near massless quarks. The ideas that lead to the expectation of nonsphericity in the shape of hadrons, the calculations that predict it, and the experimental information obtained from recent high-precision measurements are examined. Particular emphasis is given to the study of the electromagnetic transition between the nucleon and its first excited state, the Δ(1232) resonance. The experimental evidence is critically examined and compared with lattice calculations, as well as with effective-field theories and phenomenological models.

A complete set of analyzing powers for the d⃗d→³Hp reaction at the kinetic beam energy of 200 MeV has been measured in the full angular range in the c.m. frame. The observed signs of the tensor analyzing powers A_yy, A_xx, and A_xz at forward and backward directions have clearly demonstrated the sensit...

We study weakly bound deformed nuclei based on the coordinate-space Skyrme Hartree-Fock-Bogoliubov (HFB) approach, in which a large box is employed for treating the continuum and large spatial extensions. When the limit of the core-halo deformation decoupling is approached, calculations found an exo...

The discrete variable representation (DVR) basis is nearly optimal for numerically representing wave functions in nuclear physics: Suitable problems enjoy exponential convergence, yet the Hamiltonian remains sparse. We show that one can often use smaller basis sets than with the traditional harmonic...

Recent data show that both the 2⁺ and 4⁺ levels in the even neutron-rich Cr and Fe isotopes decrease in excitation energy toward N=40. This observation, along with Coulomb excitation and lifetime data, strongly indicates an increase in collectivity near N=40 in contradiction with expectations based ...

Excited states of ⁷⁶Ge have been populated in above-barrier Coulomb excitation and inelastic scattering of a 530-MeV ⁷⁶Ge beam on a ²³⁸U target and studied using in-beam γ-ray spectroscopy with the Gammasphere array. The γ band was extended considerably and one new band was identified. Comparisons o...

Background: The calculation of the hyperon binding energy in hypernuclei is crucial to understanding the interaction between hyperons and nucleons.

Purpose: We assess the relative importance of two- and three-body hyperon-nucleon force by studying the effect of the hyperon-nucleon-nucleon interaction...

It is shown that the standard shell-model representation is inadequate to explain cluster decay processes due to a deficient asymptotic behavior of the corresponding single-particle wave functions. A new representation is proposed which is derived from a mean field consisting of the standard Woods-S...

The relativistic local density approximation (LDA) for the Coulomb exchange functional in nuclear systems is presented. This approximation is composed of the well-known Slater approximation in the nonrelativistic scheme and the corrections due to the relativistic effects. Its validity in finite nucl...

Recent B(E2;0_g.s.⁺→2₁⁺) measurements in light tin isotopes have revealed surprisingly large values relative to standard shell model predictions, generating an unexpected asymmetry in the B(E2) values with respect to the neutron midshell. This effect has triggered various speculations as to its origi...

The ¹⁴⁷Ba nucleus has been studied in prompt γ-ray spectroscopy using the EUROGAM2 Ge array. Spin and parity of the ground state has been determined to be 5/2⁻. The unexpected, 5/2⁻ ground state results from interaction with other negative-parity configurations. A new ground-state band has been esta...

Two measurements of γ rays from the slow-neutron capture reaction on a ¹⁰¹Ru target were performed at the PF1B cold-neutron facility and the DuMond GAMma Spectrometer GAMS5 of ILL Grenoble, to study in detail excitations in the transitional nucleus ¹⁰²Ru. A band structure on top of the 0₂⁺ level has...

The electron capture decay branch of ¹¹⁶In has been measured to be [2.46±0.44(stat.)±0.39(syst.)]×10⁻⁴ using Penning trap-assisted decay spectroscopy. The corresponding Gamow-Teller transition strength is shown to be compatible with the most recent value extracted from the (p,n) charge-exchange reac...

We present the first results for the neutron matter equation of state (EOS) using nucleon-nucleon and three-nucleon chiral effective field theory interactions that are consistently evolved in the framework of the similarity renormalization group (SRG). The dependence of the EOS on the SRG resolution...

We derive the node structure of the radial functions which are solutions of the Dirac equation with scalar S and vector V confining central potentials, in the conditions of exact spin or pseudospin symmetry, i.e., when one has V=±S+C, where C is a constant. We show that the node structure for exact ...

The excited states of _Λ²⁵Mg with the Λ hyperon in p orbit are studied within the framework of the antisymmetrized molecular dynamics for hypernuclei. We obtained five rotational bands in _Λ²⁵Mg in which the Λ hyperon in p orbit is coupled to the ground and K^π=2⁺ bands of ²⁴Mg. We predict that the cor...

We present the first ab initio coupled-cluster calculations of medium-mass nuclei with explicit chiral three-nucleon (3N) interactions. Using a spherical formulation of coupled cluster with singles and doubles excitations including explicit 3N contributions, we study ground states of ^16,24O, ^40,48Ca...

We propose the use of partial dynamical symmetry (PDS) as a selection criterion for higher-order terms in situations when a prescribed symmetry is obeyed by some states and is strongly broken in others. The procedure is demonstrated in a first systematic classification of many-body interactions with...

Based on the stochastic Langevin equation coupled with a statistical decay model, we study the effects of deformation on the accuracy of extracting saddle-to-scission friction (β) by analyzing prescission neutron yields measured in heavy compound nuclei ²⁴⁸Fm, ²⁵²Fm, ²⁵⁶Fm, and ²⁵¹Es. It is shown th...

Using the activation technique, the cross section for the reaction ¹⁸¹Ta(n,2n)¹⁸⁰Ta^g was measured from 8 to 15 MeV in small energy steps to resolve inconsistencies in the existing database. The 93.4 keV γ ray from the decay of the ¹⁸⁰Ta^g ground state was recorded with a high-purity germanium (HPGe) ...

Vector analyzing powers for proton elastic scattering from ⁸He at 71 MeV/nucleon have been measured using a solid polarized proton target operated in a low magnetic field of 0.1 T. The spin-orbit potential obtained from a phenomenological optical model analysis is found to be significantly shallower...

We investigate the effects of secondary (knockout) protons, which constitute about 20% of the observed protons at the solenoidal tracker detector (STAR) at the BNL Relativistic Heavy Ion Collider, on the higher order cumulants of proton and baryon numbers measured by event-by-event analyses in relat...

The system formed in ultrarelativistic heavy-ion collisions behaves as a nearly perfect fluid. This collective behavior is probed experimentally by two-particle azimuthal correlations, which are typically averaged over the properties of one particle in each pair. In this Rapid Communication, we argu...

The N^*(1535)S₁₁ coupling strength to the K⁺Λ channel, g_{N^*(1535)ΛK⁺}, is extracted from the latest and largest K⁺Λ photoproduction database by using an isobar model. It is found that the coupling is small. In terms of the coupling ratio the best result is R≡|g_{N^*(1535)ΛK⁺}/g_N^*(1535)ηp|=0.460±0.172, much...

We compute cross sections for incoherent and coherent diffractive J/Ψ production in ultraperipheral nucleus-nucleus and proton-nucleus collisions using two different dipole models fitted to HERA data. We obtain a reasonably good description of the available ALICE data for coherent J/Ψ production and...

A new measurement of the neutron β-decay asymmetry A₀ has been carried out by the UCNA Collaboration using polarized ultracold neutrons (UCNs) from the solid deuterium UCN source at the Los Alamos Neutron Science Center. Improvements in the experiment have led to reductions in both statistical and s...

We apply the functional renormalization group to few-nucleon systems. Our starting point is a local effective action that includes three- and four-nucleon interactions, expressed in terms of nucleon and two-nucleon boson fields. The evolution of the coupling constants in this action is described by ...

A complete set of analyzing powers for the d⃗d→³Hp reaction at the kinetic beam energy of 200 MeV has been measured in the full angular range in the c.m. frame. The observed signs of the tensor analyzing powers A_yy, A_xx, and A_xz at forward and backward directions have clearly demonstrated the sensit...

The low spin states of ¹³⁸Nd have been reinvestigated via the ¹²⁴Te(¹⁹F,4n1p) reaction at a beam energy of 103 MeV. The quasi-one-phonon γ-vibrational band based on the 1013.7 keV level has been expanded and the quasi-two-phonon γ-vibrational band built on the 1842.7 keV level has been proposed. A s...

The neutron-rich nucleus ¹¹²Rh has been reinvestigated by examining the prompt γ rays emitted in the spontaneous fission of ²⁵²Cf with the Gammasphere detector array. A new side band was built in ¹¹²Rh. Total Routhian surface calculations have been performed and confirm the role of triaxiality in th...

Neutrinoless double-β decay is of fundamental importance for determining the neutrino mass. Although double electron decay is the most promising mode, in very recent years interest in double positron decay, positron emitting electron capture, and double electron capture has been renewed. We present ...

The similarity renormalization group (SRG) is used to soften interactions for ab initio nuclear structure calculations by decoupling low- and high-energy Hamiltonian matrix elements. The substantial contribution of both initial and SRG-induced three-nucleon forces requires their consistent evolution...

Detailed α-decay studies of ¹⁷⁹Tl^g and its daughter products ¹⁷⁵Au^g and ¹⁷¹Ir^g were carried out in two complementary experiments at the mass separator ISOLDE (CERN) and velocity filter SHIP (GSI). First unambiguous determination of the α-decay properties of ¹⁷⁵Au^g was performed as follows: E_α = 6433...

The self-consistent relativistic random-phase approximation (RPA) in the radial coordinate representation is established by using the finite-amplitude method (FAM). Taking the isoscalar giant monopole resonance in spherical nuclei as example, the feasibility of the FAM for the covariant density func...

Excited states in the neutron-deficient isotopes ¹⁶³Os and ¹⁶⁵Os were identified using the JUROGAM and GREAT spectrometers in conjunction with the RITU gas-filled separator. The ¹⁶³Os and ¹⁶⁵Os nuclei were populated via the ¹⁰⁶Cd(⁶⁰Ni,3n) and ⁹²Mo(⁷⁸Kr,2p3n) reactions at bombarding energies of 270 M...

The ground state band was recently observed in the superheavy nucleus ²⁵⁶Rf. We study the rotational properties of ²⁵⁶Rf and its neighboring even-even nuclei by using a cranked shell model (CSM) with the pairing correlations treated by a particle-number conserving (PNC) method in which the blocking ...

The decays of two long-lived low-lying isomeric states of ⁸⁰Ga were studied at the PARRNe mass separator of the ALTO ISOL facility. Over the 75 γ rays previously attributed to the ⁸⁰Ga decay, the decay time of 67 individual β-delayed γ activities were measured. This allowed the determination of the ...

We study weakly bound deformed nuclei based on the coordinate-space Skyrme Hartree-Fock-Bogoliubov (HFB) approach, in which a large box is employed for treating the continuum and large spatial extensions. When the limit of the core-halo deformation decoupling is approached, calculations found an exo...

The J/Ψ(1S) and Ψ^′(2S) production near threshold in antiproton-nucleus reactions is calculated on the basis of the Glauber model. The model takes into account the antiproton (pre-)absorption, proton Fermi motion, and charmonium formation length. We confirm an earlier prediction that the charmonium p...

Isotopically resolved fragments with Z≲20 have been studied with a high-resolution telescope in a test run for the FAZIA Collaboration. The fragments were produced by the collision of a ⁸⁴Kr beam at 35 MeV/nucleon with a neutron-rich (¹²⁴Sn) and a neutron-poor (¹¹²Sn) target. The fragments, detected...

Excitation functions of quasielastic scattering at backward angles were measured for the weakly bound ⁶Li and ⁷Li projectiles on a ⁶⁴Zn target at energies around the Coulomb barrier. The corresponding barrier distributions were derived from the experimental cross sections. The experimental data were...

A mathematical model and a computer program are developed to calculate the neutron energy spectrum, angular distribution, and integrated yield of the ⁹Be(d,n) reaction on a thick beryllium target as an accelerator-based neutron source in the incident-deuteron-energy range from 0.5 to 20.0 MeV. The d...

Based on the stochastic Langevin equation coupled with a statistical decay model, we study the effects of deformation on the accuracy of extracting saddle-to-scission friction (β) by analyzing prescission neutron yields measured in heavy compound nuclei ²⁴⁸Fm, ²⁵²Fm, ²⁵⁶Fm, and ²⁵¹Es. It is shown th...

We recently introduced a fluid-dynamical model for simulating relativistic nuclear collisions in the presence of a first-order phase transition and made explorative studies of head-on lead-lead collisions. We give here a more detailed account of this novel theoretical tool and carry out more exhaust...

The effect of initial-state fluctuations on jet-energy loss in relativistic heavy-ion collisions is studied in a 2+1-dimensional ideal hydrodynamic model. Within the next-to-leading order perturbative QCD description of hard scatterings, we find that a jet loses slightly more energy in the expanding...

QCD sum rules using polynomial kernels are used to evaluate the strong part of the proton-neutron mass difference δM_np in a model independent fashion. The result for the mass difference turns out to depend sensitively on the value of the four-quark condensate 〈(q̅ q)²〉 and reproduces the expe...

We formulated the Λ(1405) (abbreviated as Λ^*) →(Σπ)⁰ invariant-mass spectra produced in p+p→p+Λ^*+K⁺ reactions, in which both the incident channel for a quasibound K⁻p state and its decay process to (Σπ)⁰ were taken into account realistically. We calculated M(Σπ) spectral shapes for various theoretic...

Recently, the triple-α (3α) process, by which three ⁴He nuclei are fused into a ¹²C nucleus in stars, was studied by using different methods to solve the quantum mechanical three-body problem. The results for the thermonuclear reaction rate for the process differ by several orders at low stellar tem...

We present calculations of the hydrodynamics of the inner crust of neutron stars, where a superfluid neutron liquid coexists with a lattice of neutron-rich nuclei. The long-wavelength collective oscillations are combinations of phonons in the lattice and phonons in the superfluid neutrons. Velocitie...

A systematic study of the radiative proton capture reaction for all stable nickel isotopes is presented. The results were obtained using 2.0–6.0 MeV protons from the 11-MV tandem Van de Graaff accelerator at the University of Notre Dame. The γ rays were detected by the NSCL-SuN detector utilizing th...

The effect of the density dependence of the nucleonic equation of state and the hyperon-meson couplings on the star properties, including strangeness content, mass, and radius, are studied within a relativistic mean-field formalism. Information is still lacking on the nucleonic equation of state at ...