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T and F asymmetries in pi(0) photoproduction on the proton

Annand, J. R. M. and Arends, H. J. and Beck, R. and Borisov, N. and Braghieri, A. and Briscoe, W. J. and Cherepnya, S. and Collicott, C. and Costanza, S. and Downie, E. J. and Dieterle, M. and Fix, A. and Fil`kov, L. V. and Garni, S. and Glazier, D. I. and Gradl, W. and Gurevich, G. and Barrientos, P. Hall and Hamilton, D. and Hornidge, D. and Howdle, D. and Huber, G. M. and Kashevarov, V. L. and Keshelashvili, I. and Kondratiev, R. and Korolija, M. and Krusche, B. and Lazarev, A. and Lisin, V. and Livingston, K. and MacGregor, I. J. D. and Mancel, J. and Manley, D. M. and Martel, P. P. and McNicoll, E. F. and Meyer, W. and Middleton, D. G. and Miskimen, R. and Mushkarenkov, A. and Neganov, A. and Nikolaev, A. and Oberle, M. and Ortega, H. and Ostrick, M. and Ott, P. and Otte, P. B. and Oussena, B. and Pedroni, P. and Polonski, A. and Polyanski, V. V. and Prakhov, S. and Reicherz, G. and Rostomyan, T. and Sarty, A. and Schumann, S. and Steffen, O. and Strakovsky, I. I. and Strub, Th. and Supek, I. and Tiator, L. and Thomas, A. and Unverzagt, M. and Usov, Yu. A. and Watts, D. P. and Werthmuller, D. and Witthauer, L. and Wolfes, M.. (2016) T and F asymmetries in pi(0) photoproduction on the proton. Physical Review C, 93 (5). 055209.

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Abstract

The γp→π0p reaction was studied at laboratory photon energies from 425 to 1445 MeV with a transversely polarized target and a longitudinally polarized beam. The beam-target asymmetry F was measured for the first time and new high precision data for the target asymmetry T were obtained. The experiment was performed at the photon tagging facility of the Mainz Microtron (MAMI) using the Crystal Ball and TAPS photon spectrometers. The polarized cross sections were expanded in terms of associated Legendre functions and compared to recent predictions from several partial-wave analyses. The impact of the new data on our understanding of the underlying partial-wave amplitudes and baryon resonance contributions is discussed.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Hadronenphysik (Krusche)
UniBasel Contributors:Krusche, Bernd
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Physical Society
ISSN:2469-9985
e-ISSN:2469-9993
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:27 Feb 2017 14:14
Deposited On:27 Feb 2017 14:14

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