Transverse target single-spin asymmetry in inclusive electroproduction of charged pions and kaons

Airapetian, A. et al. (2014) Transverse target single-spin asymmetry in inclusive electroproduction of charged pions and kaons. Physics Letters B, 728, pp. 183-190. (doi: 10.1016/j.physletb.2013.11.021)

Abstract

Single-spin asymmetries were investigated in inclusive electroproduction of charged pions and kaons from transversely polarized protons at the Hermes experiment. The asymmetries were studied as a function of the azimuthal angle ψ about the beam direction between the target-spin direction and the hadron production plane, the transverse hadron momentum P_T relative to the direction of the incident beam, and the Feynman variable x_F . The sinψ amplitudes are positive for π⁺ and K⁺, slightly negative for π⁻ and consistent with zero for K⁻, with particular P_T but weak x_F dependences. Especially large asymmetries are observed for two small subsamples of events, where also the scattered electron was recorded by the spectrometer.

• Item Type: Articles
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Mahon, Dr David and Murray, Dr Morgan and Hoek, Mr Matthias and Keri, Dr Tibor and Burns, Mr Jonathan and Kaiser, Professor Ralf and Lehmann, Dr Inti and Seitz, Dr Bjoern and Rosner, Professor Guenther
• Authors: Airapetian, A., Akopov, N., Akopov, Z., Aschenauer, E. C., Augustyniak, W., Avetissian, A., Avetisyan, E., Belostotski, S., Blok, H. P., Borissov, A., Bryzgalov, V., Burns, J., Capiluppi, M., Capitani, G. P., Cisbani, E., Ciullo, G., Contalbrigo, M., Dalpiaz, P. F., Deconinck, W., De Leo, R., De Sanctis, E., Diefenthaler, M., Di Nezza, P., Düren, M., Ehrenfried, M., Elbakian, G., Ellinghaus, F., Etzelmüller, E., Felawka, L., Frullani, S., Gabbert, D., Gapienko, G., Gapienko, V., Garay García, J., Garibaldi, F., Gavrilov, G., Gharibyan, V., Giordano, F., Gliske, S., Hartig, M., Hasch, D., Hoek, M., Holler, Y., Hristova, I., Ivanilov, A., Jackson, H. E., Joosten, S., Kaiser, R., Karyan, G., Keri, T., Kinney, E., Kisselev, A., Korotkov, V., Kozlov, V., Kravchenko, P., Krivokhijine, V. G., Lagamba, L., Lapikás, L., Lehmann, I., Lenisa, P., Lorenzon, W., Lu, X.-G., Ma, B.-Q., Mahon, D., Manaenkov, S. I., Mao, Y., Marianski, B., Marukyan, H., Miyachi, Y., Movsisyan, A., Muccifora, V., Murray, M., Mussgiller, A., Naryshkin, Y., Nass, A., Negodaev, M., Nowak, W.-D., Pappalardo, L. L., Perez-Benito, R., Petrosyan, A., Reimer, P. E., Reolon, A. R., Riedl, C., Rith, K., Rosner, G., Rostomyan, A., Rubin, J., Ryckbosch, D., Salomatin, Y., Schäfer, A., Schnell, G., Seitz, B., Shibata, T.-A., Stahl, M., Statera, M., Steffens, E., Steijger, J. J. M., Stinzing, F., Taroian, S., Terkulov, A., Truty, R., Trzcinski, A., Tytgat, M., Van Haarlem, Y., Van Hulse, C., Veretennikov, D., Vikhrov, V., Vilardi, I., Vogel, C., Wang, S., Yaschenko, S., Ye, Z., Yen, S., Zihlmann, B., and Zupranski, P.
• College/School: College of Science and Engineering > School of Physics and Astronomy
• Journal Name: Physics Letters B
• Publisher: Elsevier BV
• ISSN: 0370-2693
• Copyright Holders: Copyright © 2014 The Authors
• First Published: First published in Physics Letters B 720:183-190
• Publisher Policy: Reproduced under a Creative Commons License

Project Code	Award No	Project Name	Principal Investigator	Funder's Name	Funder Ref	Lead Dept
57071	1	Nuclear Physics Group	David Ireland	Science & Technologies Facilities Council (STFC)	ST/J000175/1	P&A - PHYSICS & ASTRONOMY