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There is no known reason that dark matter interactions with the Standard Model should couple to neutrons and protons in the same way. This isospin violation can have large consequences, modifying the sensitivity of existing and future…

高能物理 - 唯象学 · 物理学 2023-10-16 Andrew Cheek , Darren D. Price , Ellen M. Sandford

We study if commonly used nucleon-nucleon effective interactions, obtained from fitting the properties of cold nuclear matter and of finite nuclei, can properly describe the hot dense nuclear matter produced in intermediate-energy heavy-ion…

核理论 · 物理学 2019-08-21 Jun Xu , Arianna Carbone , Zhen Zhang , Che Ming Ko

Neutrinos with energy of order 10~MeV, such as from pion decay-at-rest sources, are an invaluable tool for studying low-energy neutrino interactions with nuclei -- previously enabling the first measurement of coherent elastic…

高能物理 - 唯象学 · 物理学 2022-12-23 Bhaskar Dutta , Wei-Chih Huang , Jayden L. Newstead , Vishvas Pandey

In this paper, we construct a new phenomenological isospin dependent global neutron-nucleus optical model potential. Based on the existing experimental data of elastic scattering angular distributions for neutron as projectile, we obtain a…

核理论 · 物理学 2012-03-27 Xiao-Hua Li , Lie-Wen Chen

Generalized symmetry energy coefficients of asymmetric nuclear matter are obtained as screening functions. The dependence of the isospin symmetry energy coefficient on the neutron proton (n-p) asymmetry may be determined unless by a…

核理论 · 物理学 2009-11-07 Fabio L. Braghin

We construct an effective shell-model interaction for the valence space spanned by single-particle neutron and single-hole proton states in $^{100}$Sn. Starting from chiral nucleon-nucleon and three-nucleon forces and single-reference…

核理论 · 物理学 2021-12-16 Z. H. Sun , G. Hagen , G. R. Jansen , T. Papenbrock

The density matrix expansion is used to derive a local energy density functional for finite range interactions with a realistic meson exchange structure. Exchange contributions are treated in a local momentum approximation. A generalized…

核理论 · 物理学 2008-11-26 F. Hofmann , H. Lenske

We calculate the low-lying spectra of heavy tin isotopes from A=120 to A=130 using the 2s1d0g_{7/2}0h_{11/2} shell to define the model space. An effective interaction has been derived using 132Sn as closed core employing perturbative…

核理论 · 物理学 2009-10-30 A. Holt , T. Engeland , M. Hjorth-Jensen , E. Osnes

Nucleon-nucleon ($NN$) interactions based on chiral effective theories are commonly used in ab initio calculations of light nuclei. Here we present a study based on three different NN interactions (up to next-to-next-to-leading order) for…

核理论 · 物理学 2023-06-23 R. B. Baker , M. Burrows , Ch. Elster , P. Maris , G. Popa , S. P. Weppner

Neutron scattering on exotic nuclides is a class of processes which can not be studied directly now and in any observable future. Resonance proton scattering of exotic nuclide on a thick target in inverse kinematics can be used to infer the…

核理论 · 物理学 2025-04-22 M. S. Khirk , L. V. Grigorenko , D. E. Lanskoy , P. G. Sharov

The nucleon-nucleon (NN) t-matrix is calculated directly as function of two vector momenta for different realistic NN potentials. To facilitate this a formalism is developed for solving the two-nucleon Lippmann-Schwinger equation in…

核理论 · 物理学 2009-11-06 I. Fachruddin , Ch. Elster , W. Glöckle

With the framework of KIDS (Korea-IBS-Daegu-SKKU) density functional model, the isoscalar and isovector effective masses of nucleon and the effect of symmetry energy in nuclear medium are investigated in inclusive $(e,e')$ reaction in…

核理论 · 物理学 2022-02-23 Hana Gil , Chang Ho Hyun , Kyungsik Kim

We construct a relativistic and unitary approach to 'high' energy pion- and photon-nucleon reactions taking the $\pi N, \pi \Delta$, $\rho N$, $\omega N$, $\eta N, K \Lambda, K \Sigma$ final states into account. Our scheme dynamically…

核理论 · 物理学 2010-12-16 M. F. M. Lutz , Gy. Wolf , B. Friman

We show that nucleon electromagnetic structure functions of deep inelastic scattering in Regge-Gribov limit (fixed Q-squared, asymptotically large 1/x and s) can be well described in the two-component (soft + hard) approach. In the concrete…

高能物理 - 唯象学 · 物理学 2015-06-05 E. V. Bugaev , B. V. Mangazeev

A microscopic study of proton elastic scattering from unstable nuclei at intermediate energies using a relativistic formalism is presented. We have employed both the original relativistic impulse approximation (IA1) and the generalised…

核理论 · 物理学 2018-08-15 W. A. Yahya , B. I. S. van der Ventel , R. A. Bark , B. C. Kimene Kaya

We derive local microscopic optical potentials $U$ systematically for polarized proton scattering at 65~MeV using the local-potential version of the Melbourne $g$-matrix folding model. As target nuclei, we take $^{6}$He and neutron-rich Ne…

核理论 · 物理学 2015-06-15 Masakazu Toyokawa , Kosho Minomo , Masanobu Yahiro

We report on investigations of the applicability of non-relativistic constituent quark models to the low-energy nucleon-nucleon (NN) interaction. The major innovations of a resulting NN potential are the use of the $^3$P$_0$ decay model and…

核理论 · 物理学 2015-05-18 Clark Downum , Jirina Stone , Ted Barnes , Eric Swanson , Isaac Vidana

The neutron-proton effective mass splitting in neutron-rich nucleonic matter reflects the space-time nonlocality of the isovector nuclear interaction. It affects the neutron/proton ratio during the earlier evolution of the Universe, cooling…

核理论 · 物理学 2015-04-14 Bao-An Li , Lie-Wen Chen

We discuss the consequences of the approximate conservation of the vector and axial currents for the hadronic matrix elements appearing in beta decay if non-standard interactions are present. In particular the isovector (pseudo)scalar…

高能物理 - 唯象学 · 物理学 2014-02-05 Martín González-Alonso , Jorge Martin Camalich

New measurements of the coherent elastic neutrino-nucleus scattering (CEvNS) are expected to be achieved in the near future by using two neutrino production channels with different energy distributions: the very low energy electron…

高能物理 - 唯象学 · 物理学 2020-02-19 B. C. Canas , E. A. Garces , O. G. Miranda , A. Parada , G. Sanchez Garcia