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We propose a novel method to measure the neutron-neutron scattering length using the $^{6}$He$(p,p\alpha)nn$ reaction in inverse kinematics at high energies. The method is based on the final state interaction (FSI) between the neutrons…

We study the properties of hot beta-stable nuclear matter using equations of state derived within the Brueckner-Hartree-Fock approach at finite temperature including consistent three-body forces. Simple and accurate parametrizations of the…

核理论 · 物理学 2019-12-02 Jia-Jing Lu , Zeng-Hua Li , G. F. Burgio , H. -J Schulze

Using the Dirac-Brueckner-Hartree-Fock (DBHF) approach including the hyperon degrees of freedom, we investigate the properties of neutron-star matter. To handle the hyperons in matter, we first examine the importance of the space part of…

核理论 · 物理学 2014-10-28 Tetsuya Katayama , Koichi Saito

The first results of a new three-dimensional, finite temperature Skyrme-Hartree-Fock+BCS study of the properties of inhomogeneous nuclear matter at densities and temperatures leading to the transition to uniform nuclear matter are…

太阳与恒星天体物理 · 物理学 2009-05-05 W. G. Newton J. R. Stone

The dynamical structure factor of solid $^{15}$N$_{2}$ in the $\alpha$ phase ($T<35$K) is measured at the IN4 time-of-flight spectrometer at the Institut Laue Langevin, and the potential performance of this substance as a UCN converter is…

核实验 · 物理学 2015-06-16 D. J. Salvat , E. Gutsmiedl , C. -Y. Liu , P. Geltenbort , A. Orecchini , S. Paul , H. Schober

The nucleon structure study in nuclear deep inelastic scattering is considered. It is shown that nuclear data provide a new source of information about dynamics of parton distributions in the nucleon. An example of the neutron structure…

高能物理 - 唯象学 · 物理学 2009-11-10 A. Molochkov

We calculate the total and differential quasielastic cross sections for neutrino and antineutrino scattering on nucleons using up to date fits to the nucleon elastic electromagnetic form factors $G_E^p$, $G_E^n$, $G_M^p$, $G_M^n$, and weak…

高能物理 - 实验 · 物理学 2007-05-23 H. Budd , A. Bodek , J. Arrington

We calculate the correlation functions needed to describe the linear response of superfluid matter, and go on to calculate the differential cross section for neutral-current neutrino scattering in superfluid neutron matter and in…

核理论 · 物理学 2009-11-10 Joydip Kundu , Sanjay Reddy

Results of charge form factors calculations for several unstable neutron-rich isotopes of light, medium and heavy nuclei (He, Li, Ni, Kr, Sn) are presented and compared to those of stable isotopes in the same isotopic chain. For the lighter…

The exciting possibility of detecting supernova, solar, and atmospheric neutrinos with coherent neutrino-nucleus scattering detectors is within reach, opening up new avenues to probe New Physics. We explore the possibility of constraining…

高能物理 - 唯象学 · 物理学 2021-04-07 Anna M. Suliga , Irene Tamborra

We have constructed an approximate microscopic model for the neutron dynamic structure factor of solid methane in phase II. We expect our model to apply for neutron energies below 1\textit{eV} at pressures near 1 bar and temperatures below…

原子物理 · 物理学 2008-08-21 Yunchang Shin , W. Mike Snow , Chen-yu Liu , Christopher M. Lavelle , David V. Baxter

The Brueckner--Hartree--Fock formalism is applied to study spin polarized neutron matter properties. Results of the total energy per particle as a function of the spin polarization and density are presented for two modern realistic…

核理论 · 物理学 2009-11-07 I. Vidaña , A. Polls , A. Ramos

We compute the dynamic structure factors of a dense binary liquid mixture. These describe dynamics on molecular length scales, where structural relaxation is important. We find that the presence of a few large particles in a dense fluid of…

软凝聚态物质 · 物理学 2009-11-11 Supurna Sinha

Coherent elastic neutrino scattering on the 40Ar nucleus is computed with coupled-cluster theory based on nuclear Hamiltonians inspired by effective field theories of quantum chromodynamics. Our approach is validated by calculating the…

核理论 · 物理学 2020-01-01 C. G. Payne , S. Bacca , G. Hagen , W. Jiang , T. Papenbrock

The cross section for coherent elastic neutrino-nucleus scattering (CE$\nu$NS) depends on the response of the target nucleus to the external current, in the Standard Model (SM) mediated by the exchange of a $Z$ boson. This is typically…

高能物理 - 唯象学 · 物理学 2020-10-26 Martin Hoferichter , Javier Menéndez , Achim Schwenk

In a nuclear medium, spin-dependent forces cause the nucleon spins to fluctuate with a rate $\Gamma_\sigma$. We have previously shown that as a consequence the effective axial-current neutrino-nucleon scattering cross section is reduced.…

天体物理学 · 物理学 2011-05-12 G. Raffelt , D. Seckel , G. Sigl

A new scheme to study the properties of finite nuclei is proposed based on the Dirac-Brueckner-Hartree-Fock (DBHF) approach starting from a bare nucleon-nucleon interaction. The relativistic structure of the nucleon self-energies in nuclear…

We investigate properties of nuclear matter and examine possible correlations with neutron star observables for a set of microscopic nuclear equations of state derived within the Brueckner-Hartree-Fock formalism employing compatible…

核理论 · 物理学 2020-02-27 Jin-Biao Wei , Jia-Jing Lu , G. F. Burgio , Z. H. Li , H. -J. Schulze

By employing a recently constructed hyperon-nucleon potential the equation of state of \beta-equilibrated and charge neutral nucleonic matter is calculated. The hyperon-nucleon potential is a low-momentum potential which is obtained within…

核理论 · 物理学 2014-11-18 Haris Djapo , Bernd-Jochen Schaefer , Jochen Wambach

We have developed a new Hartree-Fock-Bogoliubov (HFB) code which has been specifically designed to study ground state properties of nuclei near the neutron and proton drip lines. The unique feature of our code is that it takes into account…

核理论 · 物理学 2007-05-23 V. E. Oberacker , A. S. Umar , E. Teran