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We demonstrate that for small values of momentum transfer, Q^2, the in-medium change of the G_E/G_M form factor ratio for a bound neutron is dominated by the change in the electric charge radius and predict in a model independent manner…

Nuclear Theory · Physics 2009-09-02 I. C. Cloët , Gerald A. Miller , E. Piasetzky , G. Ron

A detailed study of the electromagnetic responses for quasielastic $(e,e')$ reactions from nuclear matter is presented within the framework of a relativistic model including momentum dependent scalar and vector mean field potentials in both…

Nuclear Theory · Physics 2020-01-08 S. Cruz-Barrios , J. A. Caballero

Results for recoil nucleon induced polarization for $(e,e'\vec{p})$ are presented using various approximations for the relativistic nucleonic current, at the kinematics of a recent experiment at Bates. We see that the dynamical relativistic…

Nuclear Theory · Physics 2011-08-17 J. M. Udias , Javier R. Vignote

The charge and magnetization distributions of the proton and neutron are encoded in their elastic electromagnetic form factors, which can be measured in elastic electron--nucleon scattering. By measuring the form factors, we probe the…

Nuclear Experiment · Physics 2011-06-15 John Arrington , Kees de Jager , Charles F. Perdrisat

Kinematical relativistic effects are analyzed within the plane-wave impulse approximation for outgoing nucleon polarized responses in coincidence electron scattering. Following recent approaches for non-relativistic reductions of the…

Nuclear Theory · Physics 2016-08-16 M. C. Martínez , J. A. Caballero , T. W. Donnelly

A detailed analysis of processes of the type NN -> d\pi is presented taking into account the exchange graphs of a nucleon and a pion. A large sensitivity of polarization observables to the off-mass shell effects of nucleons inside the…

Nuclear Theory · Physics 2007-05-23 A. Yu. Illarionov , G. I. Lykasov

We briefly summarize the status with electromagnetic nucleon form factors, and give in this framework, arguments to study the angular dependence of the differential cross section and single-spin polarization phenomena (polarized target or…

High Energy Physics - Phenomenology · Physics 2008-10-24 Egle Tomasi-Gustafsson , Michail P. Rekalo

The electromagnetic inclusive responses of polarized $^{3}$He and $^{3}$H are thoroughly investigated at the quasielastic peak for squared momentum transfers up to $2 (GeV/c)^2$, within the plane wave impulse approximation. Great emphasys…

Nuclear Theory · Physics 2008-11-26 A. Kievsky , E. Pace , G. Salme` , M. Viviani

A simple exact covariant model in which a scalar particle is modeled as a bound state of two different particles is used to elucidate relativistic aspects of electromagnetic form factors. The model form factor is computed using an exact…

Nuclear Theory · Physics 2009-10-29 Gerald A. Miller

Among the most fundamental observables of nucleon structure, electromagnetic form factors are a crucial benchmark for modern calculations describing the strong interaction dynamics of the nucleon's quark constituents; indeed, recent proton…

The electromagnetic form factors of the nucleon characterize the effect of its internal structure on its response to an electromagnetic probe as studied in elastic electron-nucleon scattering. These form factors are functions of the squared…

Nuclear Experiment · Physics 2015-08-07 Andrew J. R. Puckett

The electromagnetic structure of the baryons is modified in the nuclear medium. The modifications can be inferred from the comparison between the electromagnetic form factors in medium with the respective form factor in vacuum. Of…

High Energy Physics - Phenomenology · Physics 2021-10-28 G. Ramalho , K. Tsushima , J. P. B. C. de Melo

The relativistic theory of the inverse beta-decay of polarized neutron, $\nu _{e} + n \to p + e ^{-}$, in strong magnetic field is developed. For the proton wave function we use the exact solution of the Dirac equation in the magnetic filed…

High Energy Physics - Phenomenology · Physics 2009-11-10 Sergey Shinkevich , Alexander Studenikin

The 16O(e,e'p) reaction in the quasi-elastic region has been studied in several experiments to determine spectroscopic factors, hence, the degree to which $^{16}$O looks like a closed shell. By varying the kinematics, experimentalists are…

Nuclear Theory · Physics 2016-08-03 J. Grineviciute , Dean Halderson

We discuss the information that can be deduced from a measurement of particle (hyperon or vector meson) polarization in ultrarelativistic nuclear collisions. We describe the sensitivity of polarization to initial conditions, hydrodynamic…

Nuclear Theory · Physics 2008-11-26 Barbara Betz , Miklos Gyulassy , Giorgio Torrieri

The electromagnetic polarizabilities of the nucleon are shown to be essentially composed of the nonresonant $\alpha_p(E_{0+})=+3.2$, $\alpha_n(E_{0+})=+4.1$,the $t$-channel $\alpha^t_{p,n}=-\beta^t_{p,n}=+7.6$ and the resonant…

High Energy Physics - Phenomenology · Physics 2013-06-26 Martin Schumacher

Measurements of the polarization of the final proton in elastic e-p scattering drastically changed our knowledge about the electromagnetic form factors of the proton. Here we present our results of the calculation of the polarization of the…

High Energy Physics - Phenomenology · Physics 2013-08-15 Samoil M. Bilenky , Ekaterina Christova

For the first time, a phenomenological analysis of the experimental electromagnetic form factors of the nucleon, both in the timelike and spacelike regions, is performed by taking into account the effects of nonvalence components in the…

High Energy Physics - Phenomenology · Physics 2009-02-16 J. P. B. C. de Melo , T. Frederico , E. Pace , S. Pisano , G. Salmè

The relativistic mean field approach is applied to the description of coincidence $A(e,e'p)B$ reactions where both the incident electron beam and knockout proton are polarized. Effects introduced by the dynamical enhancement of the lower…

Nuclear Theory · Physics 2016-08-16 M. C. Martínez , J. A. Caballero , T. W. Donnelly

We study in detail the relativistic distributions of energy, longitudinal momentum, longitudinal energy flux, and longitudinal thrust inside nucleons based on the quantum phase-space formalism. Similar to recent studies on the…

High Energy Physics - Phenomenology · Physics 2026-04-10 Ho-Yeon Won , Cédric Lorcé