edoc

Measurement of the beam-helicity asymmetry in photoproduction of pi(0)eta pairs on carbon, aluminum, and lead

Sokhoyan, V. and Prakhov, S. and Fix, A. and Abt, S. and Achenbach, P. and Adlarson, P. and Afzal, F. and Aguar-Bartolomé, P. and Ahmed, Z. and Altangerel, K. and Annand, J. R. M. and Arends, H. J. and Bantawa, K. and Bashkanov, M. and Beck, R. and Biroth, M. and Borisov, N. S. and Braghieri, A. and Briscoe, W. J. and Cherepnya, S. and Cividini, F. and Collicott, C. and Costanza, S. and Denig, A. and Dieterle, M. and Downie, E. J. and Drexler, P. and Bondy, M. I. Ferretti and Fil`kov, L. V. and Gardner, S. and Garni, S. and Glazier, D. I. and Gorodnov, I. and Gradl, W. and Günther, M. and Gurevich, G. M. and Heijkenskjöld, L. and Hornidge, D. and Huber, G. M. and Käser, A. and Kashevarov, V. L. and Kay, S. and Keshelashvili, I. and Kondratiev, R. and Korolija, M. and Krusche, B. and Lazarev, A. and Livingston, K. and Lutterer, S. and MacGregor, I. J. D. and Macrae, R. and Manley, D. M. and Martel, P. P. and McGeorge, J. C. and Middleton, D. G. and Miskimen, R. and Mornacchi, E. and Mullen, C. and Mushkarenkov, A. and Neganov, A. and Neiser, A. and Oberle, M. and Ostrick, M. and Otte, P. B. and Paudyal, D. and Pedroni, P. and Powell, A. and Rickert, E. and Ron, G. and Rostomyan, T. and Sarty, A. and Sfienti, C. and Spieker, K. and Steffen, O. and Strakovsky, I. I. and Strandberg, B. and Strub, Th. and Supek, I. and Thiel, A. and Thiel, M. and Thomas, A. and Unverzagt, M. and Usov, Yu. A. and Wagner, S. and Walford, N. K. and Watts, D. P. and Werthmüller, D. and Wettig, J. and Witthauer, L. and Wolfes, M. and Zachariou, N.. (2020) Measurement of the beam-helicity asymmetry in photoproduction of pi(0)eta pairs on carbon, aluminum, and lead. Physics Letters B, 802. p. 135243.

Full text not available from this repository.

Official URL: https://edoc.unibas.ch/81881/

Downloads: Statistics Overview

Abstract

The beam-helicity asymmetry was measured, for the first time, in photoproduction of pi(0)eta pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to an earlier measurement on a free proton and to the corresponding theoretical calculations. The Mainz model is used to predict the beam-helicity asymmetry for the nuclear targets. The present results indicate that the photoproduction mechanism for pi(0)eta pairs on nuclei is similar to photoproduction on a free nucleon. This process is dominated by the D-33 partial wave with the n Delta(1232) intermediate state. (C) 2020 The Author(s). Published by Elsevier B.V.
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:Elsevier
ISSN:0370-2693
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:15 Feb 2021 11:33
Deposited On:15 Feb 2021 11:33

Repository Staff Only: item control page