The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering

Weeam S. Albaltan; Alexei Prokudin; Marc Schlegel

doi:10.1016/j.physletb.2020.135367

The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering

Weeam S. Albaltan, Alexei Prokudin, Marc Schlegel

Division of Science (Berks)

Research output: Contribution to journal › Article › peer-review

2 Scopus citations

Abstract

We study the semi-inclusive production of real, high-p_T, isolated photons in unpolarized and polarized lepton-proton collisions, ℓp→ℓγX. In particular we analyze the transverse nucleon single-spin asymmetry within the collinear twist-3 formalism in perturbative QCD to leading order (LO) accuracy. We find that this spin asymmetry is generated by twist-3 dynamical quark-gluon-quark (qgq) correlations in the nucleon through the so-called soft-fermion and hard pole contributions. Hence, this process unprecedentedly allows for a point-by-point scan of the support of the dynamical qgq twist-3 matrix elements F_FT(x,x^′) and G_FT(x,x^′) in lepton-nucleon scattering experiments.

Original language	English (US)
Article number	135367
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	804
DOIs	https://doi.org/10.1016/j.physletb.2020.135367
State	Published - May 10 2020

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2020.135367

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title = "The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering",

abstract = "We study the semi-inclusive production of real, high-pT, isolated photons in unpolarized and polarized lepton-proton collisions, ℓp→ℓγX. In particular we analyze the transverse nucleon single-spin asymmetry within the collinear twist-3 formalism in perturbative QCD to leading order (LO) accuracy. We find that this spin asymmetry is generated by twist-3 dynamical quark-gluon-quark (qgq) correlations in the nucleon through the so-called soft-fermion and hard pole contributions. Hence, this process unprecedentedly allows for a point-by-point scan of the support of the dynamical qgq twist-3 matrix elements FFT(x,x′) and GFT(x,x′) in lepton-nucleon scattering experiments.",

author = "Albaltan, {Weeam S.} and Alexei Prokudin and Marc Schlegel",

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doi = "10.1016/j.physletb.2020.135367",

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T1 - The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering

AU - Albaltan, Weeam S.

AU - Prokudin, Alexei

AU - Schlegel, Marc

PY - 2020/5/10

Y1 - 2020/5/10

N2 - We study the semi-inclusive production of real, high-pT, isolated photons in unpolarized and polarized lepton-proton collisions, ℓp→ℓγX. In particular we analyze the transverse nucleon single-spin asymmetry within the collinear twist-3 formalism in perturbative QCD to leading order (LO) accuracy. We find that this spin asymmetry is generated by twist-3 dynamical quark-gluon-quark (qgq) correlations in the nucleon through the so-called soft-fermion and hard pole contributions. Hence, this process unprecedentedly allows for a point-by-point scan of the support of the dynamical qgq twist-3 matrix elements FFT(x,x′) and GFT(x,x′) in lepton-nucleon scattering experiments.

AB - We study the semi-inclusive production of real, high-pT, isolated photons in unpolarized and polarized lepton-proton collisions, ℓp→ℓγX. In particular we analyze the transverse nucleon single-spin asymmetry within the collinear twist-3 formalism in perturbative QCD to leading order (LO) accuracy. We find that this spin asymmetry is generated by twist-3 dynamical quark-gluon-quark (qgq) correlations in the nucleon through the so-called soft-fermion and hard pole contributions. Hence, this process unprecedentedly allows for a point-by-point scan of the support of the dynamical qgq twist-3 matrix elements FFT(x,x′) and GFT(x,x′) in lepton-nucleon scattering experiments.

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

M1 - 135367

ER -

The transverse nucleon single-spin asymmetry for the semi-inclusive production of photons in lepton-nucleon scattering

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