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The production of mesons in nucleon-nucleon collisions is reviewed from the viewpoint of the meson-exchange picture. In the first part various possible production mechanisms and their relative importance are discussed. In addition, general…

Nuclear Theory · Physics 2010-12-13 C. Hanhart

Polarization transfer in quasi-elastic nucleon knockout is sensitive to the properties of the nucleon in the nuclear medium, including possible modification of the nucleon form factor and/or spinor. In our recently completed experiment…

Nuclear Experiment · Physics 2019-08-13 S. Strauch

A resonance model for two-pion production in the pion-nucleon reaction is developed that includes information obtained in the analysis of pion-nucleon scattering in a meson-exchange model. The baryonic resonances Delta(1232), N*(1440),…

Nuclear Theory · Physics 2007-05-23 S. Schneider , S. Krewald , Ulf-G. Meißner

Within the DWBA framework, we develop a theoretical description of single and double heavy ion charge exchange (CE) reactions. We show that absorption effects are particularly important for heavy ion reactions, leading to a noticeable…

Nuclear Theory · Physics 2019-03-14 M. Colonna , J. I. Bellone , S. Burrello , J-A Lay , H. Lenske

An improved density-matrix expansion is used to calculate the nuclear energy density functional from chiral two- and three-nucleon interactions. The two-body interaction comprises long-range one- and two-pion exchange contributions and a…

Nuclear Theory · Physics 2015-05-30 J. W. Holt , N. Kaiser , W. Weise

We compare the results of the SuSAv2 model including meson-exchange currents (MEC) with the recent measurement of the quasielastic-like double differential antineutrino cross section on hydrocarbon (CH) performed by the MINERvA…

Nuclear Theory · Physics 2019-07-30 G. D. Megias , M. B. Barbaro , J. A. Caballero , S. Dolan

$Background:$ The determination of the nuclear neutron properties suffers from uncontrolled uncertainties, which attracted considerable attention recently, such as in the context of the PREX experiment. $Purpose:$ Our aim is to analyze the…

Nuclear Theory · Physics 2022-11-30 Jian Liu , Yunsheng Wang , Yonghao Gao , Pawel Danielewicz , Chang Xu , Zhongzhou Ren

Inclusive electromagnetic reactions in few-nucleon systems are studied basing on accurate three- and four-body calculations. The longitudinal 4He(e,e') response function obtained at q\le 600 MeV/c completely agrees with experiment. The…

Nuclear Theory · Physics 2009-10-31 V. D. Efros , W. Leidemann , G. Orlandini , E. L. Tomusiak

One-nucleon emission processes induced by photon absorption are studied by considering short-range correlations effects. At energies above the giant resonance region the validity of the direct knock-out model has been tested by comparison…

Nuclear Theory · Physics 2009-11-07 M. Anguiano , G. Co' , A. M. Lallena , S. R. Mokhtar

The quality of HFB wave functions are tested by comparing the theoretically calculated results with the available experimental data for a number of spectroscopic properties like yrast spectra, reduced B(E2) transition probabilities,…

Nuclear Theory · Physics 2009-11-10 P. K. Raina , A. Shukla , P. K. Rath , B. M. Dixit , K. Chaturvedi , R. Chandra , S. K. Dhiman , A. J. Singh

Bound states of the neutron-deficient, near-dripline nucleus $^{36}$Ca were populated in two-neutron removal from the ground state of $^{38}$Ca, a direct reaction sensitive to the single-particle configurations and couplings of the removed…

The Quasi-Elastic contribution of the nuclear inclusive electron scattering model developed in Nucl. Phys. A 627 (1997) 543 is extended to the study of electroweak Charged Current induced nuclear reactions, at intermediate energies of…

Nuclear Theory · Physics 2007-05-23 J. Nieves , J. E. Amaro , M. Valverde , E. Oset

We explore the impact of two-body currents (2BCs) at finite momentum transfer with a focus on magnetic dipole properties in $^{48}$Ca and $^{48}$Ti. To this end, we derive a multipole decomposition of 2BCs to fully include the…

Nuclear Theory · Physics 2026-02-11 C. Brase , T. Miyagi , J. Menéndez , A. Schwenk

Results of the Jefferson Lab Hall A quasielastic 3He(e,e'p)pn measurements are presented. These measurements were performed at fixed transferred momentum and energy, q = 1502 MeV/c and omega = 840 MeV, respectively, for missing momenta p_m…

Nuclear Experiment · Physics 2008-11-26 F. Benmokhtar

The production rate for \eta' in pp ->pp \eta' at rest is calculated in a covariant one boson exchange model, previously applied to study pi^0 and \eta production in NN collisions. The transition amplitudes for the elementary BN -> eta' N…

Nuclear Theory · Physics 2009-10-31 E. Gedalin , A. Moalem , L. Razdolskaja

The contribution of mesonic exchange currents to nuclear Compton scattering is investigated within the framework of a Fermi gas model of nuclear matter in the non-relativistic limit. The additional interaction between the nucleons is…

Nuclear Theory · Physics 2009-10-28 M. -Th. Huett , A. I. Milstein

The role of two-body dissipation in nuclear reactions at energies of several times Coulomb barrier remains unclear but is crucial for understanding the mechanisms of deep-inelastic reactions. In this letter, we report a systematic analysis…

Nuclear Theory · Physics 2025-08-14 Yingge Huang , Hui Wang , Erxi Xiao , Long Zhu , Jun Su

A new method to calculate cross sections for $(p,pn)$ and $(p,2p)$ reactions measured under inverse kinematics conditions is proposed. The method uses the prior form of the scattering transition amplitude, and replaces the exact three-body…

Nuclear Theory · Physics 2015-10-28 Antonio M. Moro

We study the evolution of the (e,e'p) cross section on nuclei with increasing asymmetry between the number of neutrons and protons. The calculations are done within the framework of the distorted-wave impulse approximation, by adopting…

Nuclear Theory · Physics 2011-09-02 C. Giusti , A. Meucci , F. D. Pacati , G. Co' , V. De Donno

The phenomenon of superscaling for quasielastic lepton induced reactions at energies of a few GeV is investigated within the framework of the relativistic impulse approximation. A global analysis of quasielastic inclusive electron and…

Nuclear Theory · Physics 2009-11-11 J. A. Caballero
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