The Sivers asymmetry in hadronic dijet production

A bstract We study the single spin asymmetry in the back-to-back dijet production in transversely polarized proton-proton collisions. Such an asymmetry is generated by the Sivers functions in the incoming polarized proton. We propose a QCD formalism in terms of the transverse momentum dependent part...

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Bibliographic Details
Published in:The journal of high energy physics 2021-02, Vol.2021 (2), p.1-40, Article 66
Main Authors: Kang, Zhong-Bo, Lee, Kyle, Shao, Ding Yu, Terry, John
Format: Article
Language:English
Subjects:
Asymmetry
Classical and Quantum Gravitation
Distribution functions
Elementary Particles
Heavy ions
High energy physics
Jets
Logarithms
Particle collisions
Partons
Physics
Physics and Astronomy
Protons
QCD Phenomenology
Quantum Field Theories
Quantum Field Theory
Quantum Physics
Quarks
Regular Article - Theoretical Physics
Relativistic Heavy Ion Collider
Relativity Theory
String Theory
Transverse momentum
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Summary:A bstract We study the single spin asymmetry in the back-to-back dijet production in transversely polarized proton-proton collisions. Such an asymmetry is generated by the Sivers functions in the incoming polarized proton. We propose a QCD formalism in terms of the transverse momentum dependent parton distribution functions, which allow us to resum the large logarithms that arise in the perturbative calculations. We make predictions for the Sivers asymmetry of hadronic dijet production at the kinematic region that is relevant to the experiment at the Relativistic Heavy Ion Collider (RHIC). We further compute the spin asymmetries in the selected positive and negative jet charge bins, to separate the contributions from u - and d -quark Sivers functions. We find that both the sign and size of our numerical results are roughly consistent with the preliminary results from the STAR collaboration at the RHIC.
ISSN:1029-8479
1029-8479
DOI:10.1007/JHEP02(2021)066