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Anomalous quark chromomagnetic moment and single-spin asymmetries

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Feb 2014Embargo end date: 01 Jan 2013 English Publisher:Elsevier BVJournal:Physics Letters B, volume 729, pages 117-120 (issn: 0370-2693, Copyright policy )
Authors: Kochelev, Nikolai; Korchagin, Nikolai;

doi: 10.1016/j.physletb.2014.01.003 , 10.48550/arxiv.1308.4857

arXiv: 1308.4857

Anomalous quark chromomagnetic moment and single-spin asymmetries

Abstract

We discuss a nonperturbative mechanism for the single-spin asymmetries (SSA) in the strong interaction. This mechanism is based on the existence of a large anomalous quark chromomagnetic moment (AQCM) induced by the nontrivial topological structure of QCD vacuum. Our estimations within the instanton liquid model for QCD vacuum show that AQCM generates very large SSA on the quark level. Therefore, this mechanism can be responsible for the anomalously large SSA observed in different high energy reactions with hadrons.

Latex, 8 pages, 4 figures, references added and discussion corrected

Related Organizations
Keywords

Nuclear and High Energy Physics, High Energy Physics - Phenomenology, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), FOS: Physical sciences, High Energy Physics - Experiment

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
17
Average
Average
Top 10%
Green
gold