Double spin asymmetries through QCD instantons

We revisit the large instanton contribution to the gluon Pauli form factor of the constituent quark noted by Kochelev. We check that it contributes sizably to the single spin asymmetry in polarized p sub([arrowup])p arrow right [pi]X. We use it to predict a large double spin asymmetry in doubly pola...

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Veröffentlicht in:Physical review. D, Particles, fields, gravitation, and cosmology Particles, fields, gravitation, and cosmology, 2014-12, Vol.90 (11), Article 114012
Hauptverfasser: Qian, Yachao, Zahed, Ismail
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Zahed, Ismail
description We revisit the large instanton contribution to the gluon Pauli form factor of the constituent quark noted by Kochelev. We check that it contributes sizably to the single spin asymmetry in polarized p sub([arrowup])p arrow right [pi]X. We use it to predict a large double spin asymmetry in doubly polarized p sub([arrowup])p sub([arrowup]) arrow right [pi][pi]X.
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1550-2368
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subjects Asymmetry
Constituents
Cosmology
Form factors
Gluons
Gravitation
Instantons
Quarks
title Double spin asymmetries through QCD instantons
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