Updated numerical study of transverse single-spin asymmetries in single-inclusive pion production from lepton-nucleon collisions

被引:1
作者
Fitzgibbons, Sophia [1 ,2 ]
Malda, Michel [1 ,3 ]
Marsh, Jacob [1 ]
Pitonyak, Daniel [1 ]
Smith, Penn [1 ]
机构
[1] Lebanon Valley Coll, Dept Phys, Annville, PA 17003 USA
[2] Temple Univ, Dept Phys, SERC, Philadelphia, PA 19122 USA
[3] L3Harris Technol, Rochester, NY 14610 USA
基金
美国国家科学基金会;
关键词
CHIRAL-ODD CONTRIBUTION; HARD-SCATTERING; CROSS-SECTIONS; LEPTOPRODUCTION; FRAGMENTATION; POLARIZATION; JETS;
D O I
10.1016/j.physletb.2024.138606
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We revisit the analysis of transverse single-spin asymmetries A(N) in lepton-nucleon scattering where only a single pion is detected in the final state, l N-up arrow -> h X. This observable is the Electron-Ion Collider (EIC) analogue to AN in proton-proton collisions, p(up arrow) p -> h X, that has been studied intensely for decades, especially at the Relativistic Heavy Ion Collider (RHIC). We incorporate new theoretical developments in the collinear twist-3 framework and utilize recent extractions of (Sivers-like and Collins-like) quark-gluon-quark correlators in the numerical computations. We compare our calculations to HERMES measurements as well as make predictions for Jefferson Lab, COMPASS, and EIC kinematics. We further explore the role of next-to-leading order (NLO) corrections to the (twist-2) unpolarized cross section (denominator of A(N)) and consider what can be deduced empirically about the potential numerical significance of the full NLO calculation of A(N) in this process. We consider sources of theoretical uncertainty in our predictions, which present potential opportunities then for future measurements to improve our understanding of A(N) and multi-parton correlations in hadrons.
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页数:7
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