Airapetian, A. and Akopov, N. and Akopov, Z. and Amarian, M. and Ammosov, V. V. and Andrus, A. and Aschenauer, E. C. and Augustyniak, W. and Avakian, R. and Avetissian, A. and Avetissian, E. and Bailey, P. and Baturin, V. and Baumgarten, C. and Beckmann, M. and Belostotski, S. and Bernreuther, S. and Bianchi, N. and Blok, H. P. and Boettcher, H. and Borissov, A. and Bouwhuis, M. and Brack, J. and Bruell, A. and Brunn, I. and Capitani, G. P. and Chiang, H. C. and Ciullo, G. and Contalbrigo, M. and Court, G. R. and Dalpiaz, P. F. and De Leo, R. and De Nardo, L. and De Sanctis, E. and Devitsin, E. and Di Nezza, P. and Dueren, M. and Ehrenfried, M. and Elalaoui-Moulay, A. and Elbakian, G. and Ellinghaus, F. and Elschenbroich, U. and Ely, J. and Fabbri, R. and Fantoni, A. and Fechtchenko, A. and Felawka, L. and Fox, B. and Franz, J. and Frullani, S. and Gaerber, Y. and Gapienko, G. and Gapienko, V. and Garibaldi, F. and Garutti, E. and Gaskell, D. and Gavrilov, G. and Gharibyan, V. and Graw, G. and Grebeniouk, O. and Greeniaus, L. G. and Haeberli, W. and Hafidi, K. and Hartig, M. and Hasch, D. and Heesbeen, D. and Henoch, M. and Hertenberger, R. and Hesselink, W. H. A. and Hillenbrand, A. and Holler, Y. and Hommez, B. and Iarygin, G. and Izotov, A. and Jackson, H. E. and Jgoun, A. and Kaiser, R. and Kinney, E. and Kisselev, A. and Koenigsmann, K. and Kolster, H. and Kopytin, M. and Korotkov, V. and Kozlov, V. and Krauss, B. and Krivokhijine, V. G. and Lagamba, L. and Lapikas, L. and Laziev, A. and Lenisa, P. and Liebing, P. and Lindemann, T. and Lipka, K. and Lorenzon, W. and Makins, N. C. R. and Marukyan, H. and Masoli, F. and Menden, F. and Mexner, V. and Meyners, N. and Mikloukho, O. and Miller, C. A. and Miyachi, Y. and Muccifora, V. and Nagaitsev, A. and Nappi, E. and Naryshkin, Y. and Nass, A. and Nowak, W. -D. and Oganessyan, K. and Ohsuga, H. and Orlandi, G. and Potashov, S. and Potterveld, D. H. and Raithel, M. and Reggiani, D. and Reimer, P. E. and Reischl, A. and Reolon, A. R. and Rith, K. and Rosner, G. and Rostomyan, A. and Ryckbosch, D. and Sanjiev, I. and Savin, I. and Scarlett, C. and Schaefer, A. and Schill, C. and Schnell, G. and Schueler, K. P. and Schwind, A. and Seibert, J. and Seitz, B. and Shanidze, R. and Shibata, T. -A. and Shutov, V. and Simani, M. C. and Sinram, K. and Stancari, M. and Statera, M. and Steffens, E. and Steijger, J. J. M. and Stewart, J. and Stoesslein, U. and Tanaka, H. and Taroian, S. and Tchuiko, B. and Terkulov, A. and Tessarin, S. and Thomas, E. and Tkabladze, A. and Trzcinski, A. and Tytgat, M. and Urciuoli, G. M. and van der Nat, P. B. and van der Steenhoven, G. and van de Vyver, R. and Veretennikov, D. and Vetterli, M. C. and Vikhrov, V. and Vincter, M. G. and Visser, J. and Vogt, M. and Volmer, J. and Weiskopf, C. and Wendland, J. and Wilbert, J. and Wise, T. and Yen, S. and Yoneyama, S. and Zihlmann, B. and Zohrabian, H. and Zupranski, P. (2007) Transverse polarization of Lambda and (Lambda)over-bar hyperons in quasireal photoproduction. PHYSICAL REVIEW D, 76 (9): 092008. ISSN 1550-7998, 1550-2368
Full text not available from this repository.Abstract
The HERMES experiment has measured the transverse polarization of Lambda and (Lambda) over bar hyperons produced inclusively in quasireal photoproduction at a positron beam energy of 27.6 GeV. The transverse polarization P-n(Lambda) of the Lambda hyperon is found to be positive while the observed (Lambda) over bar polarization is compatible with zero. The values averaged over the kinematic acceptance of HERMES are P-n(Lambda)=0.078 +/- 0.006(stat)+/- 0.012(syst) and P-n((Lambda) over bar)=-0.025 +/- 0.015(stat)+/- 0.018(syst) for Lambda and (Lambda) over bar, respectively. The dependences of P-n(Lambda) and P-n((Lambda) over bar) on the fraction zeta of the beam's light-cone momentum carried by the hyperon and on the hyperon's transverse momentum p(T) were investigated. The measured Lambda polarization rises linearly with p(T) and exhibits a different behavior for low and high values of zeta, which approximately correspond to the backward and forward regions in the center-of-mass frame of the gamma*N reaction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | INCLUSIVE HADRON-PRODUCTION; PHOTON ENERGIES; 800-GEV/C PROTONS; P INTERACTIONS; ASYMMETRY; NUCLEON; GEV/C; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Andreas Schäfer |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 02 Dec 2020 06:16 |
| Last Modified: | 02 Dec 2020 06:16 |
| URI: | https://pred.uni-regensburg.de/id/eprint/32038 |
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