Beam-helicity asymmetries for single-hadron production in semi-inclusive deep-inelastic scattering from unpolarized hydrogen and deuterium targets

A measurement of beam-helicity asymmetries for single-hadron production in deep-inelastic scattering is presented. Data from the scattering of 27.6 GeV electrons and positrons off gaseous hydrogen and deuterium targets were collected by the HERMES experiment. The asymmetries are presented separately...

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Veröffentlicht in:	Physics letters. B 2019-10, Vol.797 (C), p.134886, Article 134886
Hauptverfasser:	Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E.C., Augustyniak, W., Belostotski, S., Blok, H.P., Bryzgalov, V., Capitani, G.P., Cisbani, E., Ciullo, G., Contalbrigo, M., Deconinck, W., De Sanctis, E., Diefenthaler, M., Di Nezza, P., Düren, M., Elbakian, G., Ellinghaus, F., Fantoni, A., Felawka, L., Gapienko, G., Garibaldi, F., Gavrilov, G., Gharibyan, V., Hillenbrand, A., Holler, Y., Ivanilov, A., Jackson, H.E., Joosten, S., Kaiser, R., Karyan, G., Kinney, E., Kisselev, A., Korotkov, V., Kozlov, V., Kravchenko, P., Lagamba, L., Lapikás, L., Lehmann, I., Lenisa, P., Lorenzon, W., Manaenkov, S.I., Marianski, B., Marukyan, H., Movsisyan, A., Muccifora, V., Nass, A., Nazaryan, G., Nowak, W.-D., Pappalardo, L.L., Reolon, A.R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Ryckbosch, D., Schnell, G., Seitz, B., Shibata, T.-A., Shutov, V., Statera, M., Terkulov, A., Trzcinski, A., Tytgat, M., Van Haarlem, Y., Van Hulse, C., Veretennikov, D., Vilardi, I., Vogel, C., Yaschenko, S., Zagrebelnyy, V., Zeiler, D., Zihlmann, B., Zupranski, P.
Format:	Artikel
Sprache:	eng
Schlagworte:	Beam-helicity asymmetries CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS Deep-inelastic scattering Nucleon structure Transverse-momentum dependence Twist-3
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Beschreibung
Zusammenfassung:	A measurement of beam-helicity asymmetries for single-hadron production in deep-inelastic scattering is presented. Data from the scattering of 27.6 GeV electrons and positrons off gaseous hydrogen and deuterium targets were collected by the HERMES experiment. The asymmetries are presented separately as a function of the Bjorken scaling variable, the hadron transverse momentum, and the fractional energy for charged pions and kaons as well as for protons and anti-protons. These asymmetries are also presented as a function of the three aforementioned kinematic variables simultaneously.
ISSN:	0370-2693 1873-2445
DOI:	10.1016/j.physletb.2019.134886