Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons

Airapetian A, Akopov N, Akopov Z, Aschenauer EC, Augustyniak W, Avakian R, Bacchetta A, Belostotski S, Bryzgalov , Capitani GP, Cisbani E, Ciullo G, Contalbrigo M, Deconinck W, De Leo R, De Sanctis E, Diefenthaler M, Di Nezza P, Dueren M, Elbakian G, Ellinghaus F, Fantoni A, Felawka L, Gavrilov G, Gharibyan V, Hasch D, Holler Y, Ivanilov A, Jackson HE, Joosten S, Kaiser R, Karyan G, Kinney E, Kisselev A, Kozlov V, Kravchenko P, Lagamba L, Lapikas L, Lehmann I, Lenisa P, Lorenzon W, Manaenkov S, Marianski B, Marukyan H, Miyachi Y, Movsisyan A, Muccifora V, Naryshkin Y, Naß A, Nazaryan G, Nowak WD, Pappalardo LL, Reimer PE, Reolon AR, Riedl C, Rith KW, Rosner G, Rostomyan A, Rubin J, Ryckbosch D, Schaefer A, Schnell G, Seitz B, Shibata TA, 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 (2020)

Publication Type: Journal article

Publication year: 2020

Journal

Journal Issue: 12

DOI: 10.1007/JHEP12(2020)010

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 (phi-phi(S)) modulations provide evidence for a sizable worm-gear (II) distribution, g(1T)(q) (x, p(T)(2)). Most of the other modulations are found to be consistent with zero with the notable exception of large sin (phi(S)) modulations for charged pions and K+.

Authors with CRIS profile

Involved external institutions

Tokyo Institute of Technology Japan (JP) Deutsches Elektronen-Synchrotron DESY Germany (DE) Universität Regensburg Germany (DE) University of Basque Country / Universidad del Pais Vasco (UPV) / Euskal Herriko Unibersitatea (EHU) Spain (ES) Joint Institute for Nuclear Research (JINR) / Объединённый институт ядерных исследований (ОИЯИ) Russian Federation (RU) National Institute for Nuclear Physics / Istituto Nazionale di Fisica Nucleare (INFN) Italy (IT) Lebedev Physical Institute of the Russian Academy of Sciences (LPI RAS) / Физи́ческий институ́т имени П.Н.Ле́бедева Российской академии наук (ФИАН) Russian Federation (RU) University of Glasgow United Kingdom (GB) National Centre for Nuclear Research (früher:Institute of Atomic Energy POLATOM & Andrzej Sołtan Institute for Nuclear Studies) / Narodowe Centrum Badań Jądrowych (NCBJ) Poland (PL) Universiteit Gent (UGent) / Ghent University Belgium (BE) Università degli Studi di Ferrara Italy (IT) Argonne National Laboratory United States (USA) (US) Yerevan Physics Institute (YerPhI) / Երևանի Ֆիզիկայի Ինստիտուտ Armenia (AM) Triumf Canada (CA) National Research Centre (NRC) / المركز القومي للبحوث Egypt (EG) National Institute for Subatomic Physics / Nationaal instituut voor subatomaire fysica (Nikhef) Netherlands (NL) Justus-Liebig-Universität Gießen Germany (DE) University of Colorado System United States (USA) (US) University of Illinois at Urbana-Champaign United States (USA) (US) University of Michigan United States (USA) (US)

How to cite

APA:

Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E.C., Augustyniak, W., Avakian, R.,... Zupranski, P. (2020). Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons. Journal of High Energy Physics, 12. https://dx.doi.org/10.1007/JHEP12(2020)010

MLA:

Airapetian, A., et al. "Azimuthal single- and double-spin asymmetries in semi-inclusive deep-inelastic lepton scattering by transversely polarized protons." Journal of High Energy Physics 12 (2020).

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