Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons
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Published:2020-12
Issue:12
Volume:2020
Page:
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ISSN:1029-8479
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Container-title:Journal of High Energy Physics
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language:en
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Short-container-title:J. High Energ. Phys.
Author:
Airapetian A., , Akopov N., Akopov Z., Aschenauer E. C., Augustyniak W., Avakian R., Bacchetta A., Belostotski S., Bryzgalov V., Capitani G. P., Cisbani E., Ciullo G., Contalbrigo M., Deconinck W., De Leo R., De Sanctis E., Diefenthaler M., Di Nezza P., Düren M., Elbakian G., Ellinghaus F., Fantoni A., Felawka L., Gavrilov G., Gharibyan V., Hasch D., Holler Y., Ivanilov A., Jackson H. E., Joosten S., Kaiser R., Karyan G., Kinney E., Kisselev A., Kozlov V., Kravchenko P., Lagamba L., Lapikás L., Lehmann I., Lenisa P., Lorenzon W., Manaenkov S. I., Marianski B., Marukyan H., Miyachi Y., Movsisyan A., Muccifora V., Naryshkin Y., Nass A., Nazaryan G., Nowak W.-D., Pappalardo L. L., Reimer P. E., Reolon A. R., Riedl C., Rith K., Rosner G., Rostomyan A., Rubin J., Ryckbosch D., Schäfer A., Schnell G.ORCID, Seitz B., Shibata T.-A., Shutov V., Statera M., Terkulov A., Tytgat M., Van Haarlem Y., Van Hulse C., Veretennikov D., Vilardi I., Yaschenko S., Zeiler D., Zihlmann B., Zupranski P.
Abstract
Abstract
A comprehensive set of azimuthal single-spin and double-spin asymmetries in semi-inclusive leptoproduction of pions, charged kaons, protons, and antiprotons from transversely polarized protons is presented. These asymmetries include the previously published HERMES results on Collins and Sivers asymmetries, the analysis of which has been extended to include protons and antiprotons and also to an extraction in a three-dimensional kinematic binning and enlarged phase space. They are complemented by corresponding results for the remaining four single-spin and four double-spin asymmetries allowed in the one-photon-exchange approximation of the semi-inclusive deep-inelastic scattering process for target-polarization orientation perpendicular to the direction of the incoming lepton beam. Among those results, significant non-vanishing cos (ϕ−ϕS) modulations provide evidence for a sizable worm-gear (II) distribution, $$ {g}_{1\mathrm{T}}^q\left(x,{\mathrm{p}}_T^2\right) $$
g
1
T
q
x
p
T
2
. Most of the other modulations are found to be consistent with zero with the notable exception of large sin (ϕS) modulations for charged pions and K+.
Publisher
Springer Science and Business Media LLC
Subject
Nuclear and High Energy Physics
Reference185 articles.
1. M. Anselmino, M. Guidal and P. Rossi, The 3-D Structure of the Nucleon, Eur. Phys. J. A 52 (2016) 164. 2. J. Gao, L. Harland-Lang and J. Rojo, The structure of the proton in the LHC precision era, Phys. Rept. 742 (2018) 1 [arXiv:1709.04922] [INSPIRE]. 3. J. Collins, Foundations of perturbative QCD, Cambridge University Press (2013). 4. R.L. Jaffe, Spin, Twist and Hadron Structure in Deep Inelastic Processes, in F. Lenz, H. Grießhammer and D. Stoll eds., Lectures on QCD: Applications, vol. 496 of Lecture Notes in Physics, Springer, Berlin, New York (1997) pp. 178–249. 5. M. Engelhardt et al., Quark orbital angular momentum in the proton evaluated using a direct derivative method, PoS LATTICE2018 (2018) 115 [arXiv:1901.00843] [INSPIRE].
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