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The spin-structure functions $g_1$ and $g_2$, and the spin-dependent partial cross-section $\sigma_\mathrm{TT}$ have been extracted from the polarized cross-sections differences, $\Delta…

Nuclear effects in Deep Inelastic Scattering of polarized electrons off polarized $^3$He are analyzed in terms of a spin dependent spectral function taking into account $S'$ and $D$ waves in $^3$He, as well as Fermi motion and binding…

Nuclear Theory · Physics 2009-09-25 C. Ciofi degli Atti , E. Pace , G. Salme` , S. Scopetta

We develop the theoretical framework for semi-inclusive deep-inelastic scattering on a polarized spin-1 target and apply it to scattering on the polarized deuteron with spectator nucleon tagging. In Part I (this article) we present the…

High Energy Physics - Phenomenology · Physics 2026-03-26 W. Cosyn , C. Weiss

We present a projection study for the first moments of the inclusive spin structure function for the proton and neutron from simulated doubly-polarized e+p and e+3He collision data expected from the Electron-Ion collider. For detection and…

Nuclear Theory · Physics 2024-11-05 T. Kutz , J. R. Pybus , D. W. Upton , C. Cotton , A. Deshpande , A. Deur , W. B. Li , D. Nguyen , M. Nycz , X. Zheng

We report results from an experiment measuring the semi-inclusive reaction $d(e,e'p_s)$ where the proton $p_s$ is moving at a large angle relative to the momentum transfer. If we assume that the proton was a spectator to the reaction taking…

Nuclear Experiment · Physics 2019-08-14 A. V. Klimenko , S. E. Kuhn

Parton distribution functions, which represent the flavor and spin structure of the nucleon, provide invaluable information in illuminating quantum chromodynamics in the confinement region. Among various processes that measure such parton…

Nuclear Experiment · Physics 2012-07-20 Xin Qian

Understanding the differences between the distribution of quarks bound in protons and neutrons is key for constraining the mechanisms of SU(6) spin-flavor symmetry breaking in Quantum Chromodynamics (QCD). While vast amounts of proton…

High Energy Physics - Phenomenology · Physics 2021-04-16 E. P. Segarra , J. R. Pybus , F. Hauenstein , T. Kutz , D. Higinbotham , G. A. Miller , E. Piasetzky , A. Schmidt , M. Strikman , L. B. Weinstein , O. Hen

A detailed study of inclusive deep inelastic scattering (DIS) from mirror A = 3 nuclei at large values of the Bjorken variable x is presented. The main purpose is to estimate the theoretical uncertainties on the extraction of the neutron…

Nuclear Theory · Physics 2009-11-07 M. M. Sargsian , S. Simula , M. I. Strikman

A theoretical approach to the investigation of spin-dependent structure functions in deep inelastic scattering of polarized leptons off polarized nuclei, based on the effective meson-nucleon theory and operator product expansion method, is…

Nuclear Theory · Physics 2009-09-25 L. P. Kaptari , A. Yu. Umnikov , C. Ciofi degli Atti , S. Scopetta , K. Yu. Kazakov

We review the theory and phenomenology of deep inelastic polarized lepton-nucleon scattering in the light of recent data with a deuteron target from the SMC at CERN and a Helium 3 target from the E142 experiment at SLAC. After including…

High Energy Physics - Phenomenology · Physics 2008-02-03 John Ellis , Marek Karliner

The distorted spin-dependent spectral function of a nucleon inside an A=3 nucleus is introduced as a novel tool for investigating the polarized electron scattering off polarized $^3$He in semi-inclusive DIS regime (SiDIS), going beyond the…

Nuclear Theory · Physics 2014-04-02 L. P. Kaptari , A. Del Dotto , E. Pace , G. Salme' , S. Scopetta

Mechanisms of spin-flavor SU(6) symmetry breaking in Quantum Chromodynamics (QCD) are studied via an extraction of the free neutron structure function from a global analysis of deep inelastic scattering (DIS) data on the proton and on…

We present results of a perturbative QCD analysis of deep inelastic measurements of both the deuteron and proton structure functions. We evaluate the theoretical uncertainty associated to nuclear effects in the deuteron, and we extract…

High Energy Physics - Phenomenology · Physics 2014-11-17 S. I. Alekhin , S. A. Kulagin , S. Liuti

Nuclear effects in the spin-dependent structure function $g_1$ of the deuteron are studied in the kinematics of future experiments at CEBAF, ($\nu \leq 3~GeV, ~Q^2 \leq 2~GeV^2$). The magnitude of nuclear effects is found to be…

Nuclear Theory · Physics 2015-06-26 C. Ciofi degli Atti , S. Scopetta , A. Yu. Umnikov , L. P. Kaptari

The proton structure function is re-deduced from the data of deep inelastic electron-proton scattering after enhanced correction that is made due to the multiple scattering effect. The Glauber approach is used to account for the multiple…

High Energy Physics - Phenomenology · Physics 2007-05-23 N. M. Hassan , W. R. El-Harby , R. W. El-Moualed And M. T. Hussein

Short range correlated nucleon-nucleon ($NN$) pairs are an important part of the nuclear ground state. They are typically studied by scattering an electron from one nucleon in the pair and detecting its spectator correlated partner…

Instrumentation and Detectors · Physics 2022-05-17 F. Hauenstein , A. Jentsch , J. R. Pybus , A. Kiral , M. D. Baker , Y. Furletova , O. Hen , D. W. Higinbotham , C. Hyde , V. Morozov , D. Romanov , L. B. Weinstein

We study both the spin-average and spin-dependent structure functions of the lithium isotopes, $^{6-11}$Li, which could be measured at RIKEN and other nuclear facilities in the future. It is found that the light-cone momentum distribution…

Nuclear Theory · Physics 2010-02-17 K. Saito , M. Ueda , K. Tsushima , A. W. Thomas

Motivated by the fact that a polarized ${}^3$He nucleus behaves as an `effective' neutron target, we examine manifestations of neutron electromagnetic polarizabilities in elastic Compton scattering from the Helium-3 nucleus. We calculate…

Nuclear Theory · Physics 2018-04-06 Deepshikha Shukla , Andreas Nogga , Daniel R. Phillips

We investigate the dependence of polarisation observables in elastic deuteron Compton scattering below the pion production threshold on the spin-independent and spin-dependent iso-scalar dipole polarisabilities of the nucleon. The…

Nuclear Theory · Physics 2012-03-28 Harald W. Griesshammer , Deepshikha Shukla

We discuss a possible measurement of the ratio of the nucleon structure functions, F2n/F2p, and the ratio of the up to down quark distributions, u/d, at large x, by performing deep inelastic electron scattering from the 3H and 3He mirror…

Nuclear Experiment · Physics 2007-05-23 G. G. Petratos , I. R. Afnan , F. Bissey , J. Gomez , A. T. Katramatou , W. Melnitchouk , A. W. Thomas