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The neutron's deep-inelastic structure functions provide essential information for the flavor separation of the nucleon parton densities, the nucleon spin decomposition, and precision studies of QCD phenomena in the flavor-singlet and…

High Energy Physics - Phenomenology · Physics 2014-11-03 W. Cosyn , V. Guzey , D. W. Higinbotham , C. Hyde , S. Kuhn , P. Nadel-Turonski , K. Park , M. Sargsian , M. Strikman , C. Weiss

We study the dipole picture of high-energy virtual-photon-proton scattering. It is shown that different choices for the energy variable in the dipole cross section used in the literature are not related to each other by simple arguments…

High Energy Physics - Phenomenology · Physics 2011-03-28 Carlo Ewerz , Andreas von Manteuffel , Otto Nachtmann

In a recent paper Yang and Bodek extracted the free neutron structure function at large x by extrapolating the density dependence of the nuclear EMC ratios to the deuteron. We clarify why this approach is ill-defined for light nuclei, and…

High Energy Physics - Experiment · Physics 2008-11-26 W. Melnitchouk , I. R. Afnan , F. Bissey , A. W. Thomas

Estimates are made of the ultra-high energy neutrino cross sections based on an extrapolation to very small Bjorken x of the logarithmic Froissart dependence in x shown previously to provide an excellent fit to the measured proton structure…

High Energy Physics - Phenomenology · Physics 2008-11-26 Edmond L. Berger , Martin M. Block , Douglas W. McKay , Chung-I Tan

We present a detailed analysis of the uncertainty in the neutron F2n structure function extracted from inclusive deuteron and proton deep-inelastic scattering data. The analysis includes experimental uncertainties as well as uncertainties…

High Energy Physics - Phenomenology · Physics 2013-05-30 J. Arrington , J. G. Rubin , W. Melnitchouk

Nuclear effects in deep inelastic scattering at low$-x$ are phenomenologically described changing the typical dynamical and/or kinematical scales characterizing the free nucleon case. In a holographic approach, this rescaling is an…

High Energy Physics - Phenomenology · Physics 2015-06-18 L. Agozzino , P. Castorina , P. Colangelo

The experimental data on F2 structure functions of the proton and deuteron were used to construct their moments. In particular, recent measurements performed with CLAS detector at Jefferson Lab allowed to extend our knowledge of structure…

High Energy Physics - Phenomenology · Physics 2014-11-18 M. Osipenko , S. Simula , S. Kulagin , G. Ricco , CLAS Collaboration

Rapid growth of neutrino-nucleon cross-sections at high energies due to hypothetical hard pomeron enhancement of $\nu N$-structure functions is discussed. Differential and integral hadron moments, which, together with cross-sections, define…

Astrophysics · Physics 2007-05-23 A. Z. Gazizov , S. I. Yanush

Measurements of deep inelastic scattering from nuclei have revealed that the partonic structure of bound nucleons differs from that of free nucleons. One hypothesis is that this structure modification primarily occurs in highly virtual…

Nuclear Theory · Physics 2024-02-23 Sara Ratliff , Axel Schmidt

We calculate the unpolarised deep inelastic structure function of a relativistic deuteron within a covariant framework. An exact treatment of nucleon off-shell effects is shown to give corrections to the widely-used convolution model, even…

Nuclear Theory · Physics 2008-11-26 W. Melnitchouk , A. W. Schreiber , A. W. Thomas

We present a formalism to extract the dynamical nucleon polarisabilities defined via a multipole expansion of the structure amplitudes in nucleon Compton scattering. In contradistinction to the static polarisabilities, dynamical…

Nuclear Theory · Physics 2009-11-07 Harald W. Griesshammer , Thomas R. Hemmert

The deuteron deep inelastic unpolarized structure function F_2^D is calculated using the Wilson operator product expansion method. The long distance behaviour, related to the deuteron bound state properties, is evaluated using the…

Nuclear Theory · Physics 2010-12-17 J. Paulo Pinto , A. Amorim , F. D. Santos

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

We present a comprehensive analysis of deep inelastic scattering from He-3 and H-3, focusing in particular on the extraction of the free neutron structure function, F_2^n. Nuclear corrections are shown to cancel to within 1-2% for the…

The behavior of the nucleon structure functions in lepton nuclei deep inelastic scattering, both polarized and unpolarized, due to nuclear structure effects is reanalyzed. The study is performed in two schemes: an x-rescaling approach, and…

High Energy Physics - Phenomenology · Physics 2015-06-19 H. Fanchiotti , C. A. García-Canal , T. Tarutina , V. Vento

We demonstrate that measurement of tagged structure functions of the deuteron in (e,e'N) semi-inclusive reactions can discriminate between different hypotheses on the origin of the nuclear EMC effect. By choosing extreme backward kinematics…

Nuclear Theory · Physics 2009-10-30 W. Melnitchouk , M. Sargsian , M. Strikman

We discuss the process of deep-inelastic electron scattering (DIS) on the polarized deuteron with detection of a nucleon in the nuclear fragmentation region ("spectator tagging"). We cover (a) the general structure of the semi-inclusive DIS…

High Energy Physics - Phenomenology · Physics 2016-09-08 W. Cosyn , M. Sargsian , C. Weiss

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 consider electron-deuteron deep-inelastic scattering (DIS) with detection of a proton in the nuclear fragmentation region ("spectator tagging") as a method for extracting the free neutron structure functions and studying their nuclear…

High Energy Physics - Phenomenology · Physics 2018-04-04 M. Strikman , C. Weiss

Nuclear deep inelastic scattering is considered in the framework of a model in which the current operator explicitly satisfies Poincare invariance and current conservation. The results considerably differ from the standard ones at small…

High Energy Physics - Phenomenology · Physics 2009-10-28 Felix M. Lev