Gluon shadowing and nuclear entanglement entropy

Relying on previous results, that link entanglement entropy and parton distribution functions in deep inelastic scattering, and focusing on the small Bjorken scaling region we present here indications that gluon shadowing might indeed be explained as due to a depletion of the entanglement entropy, between observed and unobserved degrees of freedom, per nucleon within a nucleus, with respect to the free nucleon. We apply to gluon shadowing the general Page approach to the calculation of the entanglement entropy in bipartite systems, giving physical motivations of the results.

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αs from global fits of parton distribution functions

Modern Physics Letters A ◽

10.1142/s0217732316300238 ◽

2016 ◽

Vol 31 (25) ◽

pp. 1630023 ◽

Cited By ~ 8

Author(s):

S. Alekhin ◽

J. Blümlein ◽

S.-O. Moch

Keyword(s):

Inelastic Scattering ◽

Deep Inelastic Scattering ◽

Parton Distribution ◽

Distribution Functions ◽

Scattering Data ◽

Hard Scattering ◽

Coupling Constant ◽

Parton Distribution Functions ◽

The Status

The status of the determination of the strong coupling constant [Formula: see text] from deep-inelastic scattering and related hard scattering data is reviewed.

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CAN POLARIZED DRELL-YAN SHED MORE LIGHT ON THE PROTON SPIN?

Modern Physics Letters A ◽

10.1142/s0217732392002159 ◽

1992 ◽

Vol 07 (29) ◽

pp. 2695-2702 ◽

Cited By ~ 8

Author(s):

PRAKASH MATHEWS ◽

V. RAVINDRAN

Keyword(s):

Inelastic Scattering ◽

Deep Inelastic Scattering ◽

Parton Distribution ◽

Factorization Method ◽

Distribution Functions ◽

Proton Spin ◽

Leading Order ◽

Parton Distribution Functions ◽

First Moment ◽

Polarized Deep Inelastic Scattering

We analyze polarized Drell-Yan process using the factorization method and derive operator definitions for polarized parton distribution functions. We demonstrate that a factorization analogous to that in the unpolarized Drell-Yan case holds in this process. We study the leading order gluonic contribution to the first moment of polarized Drell-Yan function and show that it is consistent with the results obtained from polarized deep inelastic scattering.

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Constraints on parton distribution functions from charged current deep inelastic scattering

10.1063/1.5040206 ◽

2018 ◽

Author(s):

J. F. Owens

Keyword(s):

Inelastic Scattering ◽

Deep Inelastic Scattering ◽

Parton Distribution ◽

Distribution Functions ◽

Charged Current ◽

Parton Distribution Functions

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INSIGHTS ON NON-PERTURBATIVE ASPECTS OF TMDs FROM MODELS

Modern Physics Letters A ◽

10.1142/s0217732309001200 ◽

2009 ◽

Vol 24 (35n37) ◽

pp. 2995-3004 ◽

Cited By ~ 17

Author(s):

H. AVAKIAN ◽

A. V. EFREMOV ◽

P. SCHWEITZER ◽

O. V. TERYAEV ◽

F. YUAN ◽

...

Keyword(s):

Transverse Momentum ◽

Inelastic Scattering ◽

Deep Inelastic Scattering ◽

Parton Distribution ◽

Distribution Functions ◽

Parton Distribution Functions ◽

Perturbative Calculations ◽

Transverse Momentum Dependent ◽

Azimuthal Asymmetries

Transverse momentum dependent parton distribution functions are a key ingredient in the description of spin and azimuthal asymmetries in deep-inelastic scattering processes. Recent results from non-perturbative calculations in effective approaches are reviewed, with focus on relations among different parton distribution functions in QCD and models.

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SINGLE/DOUBLE-SPIN ASYMMETRY MEASUREMENTS OF SEMI-INCLUSIVE PION ELECTRO-PRODUCTION ON A TRANSVERSELY POLARIZED 3He TARGET THROUGH DEEP INELASTIC SCATTERING

Modern Physics Letters A ◽

10.1142/s0217732312300212 ◽

2012 ◽

Vol 27 (21) ◽

pp. 1230021

Author(s):

◽

XIN QIAN

Keyword(s):

Inelastic Scattering ◽

Deep Inelastic Scattering ◽

Parton Distribution ◽

Spin Asymmetry ◽

Valence Quark ◽

Distribution Functions ◽

Scattered Electron ◽

Parton Distribution Functions ◽

Transverse Momentum Dependent ◽

Double Spin

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 distribution functions, semi-inclusive deep inelastic scattering is regarded as one of the golden channels to access transverse momentum dependent parton distribution functions, which provide a 3D view of the nucleon structure in momentum space. The Jefferson Lab experiment E06-010 focuses on measuring the target single and double spin asymmetries in the [Formula: see text] reaction with a transversely polarized 3 He target in Hall A with a 5.89 GeV electron beam. A leading pion and the scattered electron are detected in coincidence by the left High-Resolution Spectrometer at 16° and the BigBite spectrometer at 30° beam right, respectively. The kinematic coverage concentrates in the valence quark region, x ~ 0.1–0.4, at Q2 ~ 1–3 GeV 2. The Collins and Sivers asymmetries of 3 He and neutron are extracted. In this review, an overview of the experiment and the final results are presented. Furthermore, an upcoming 12-GeV program with a large acceptance solenoidal device and the future possibilities at an electron–ion collider are discussed.

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