Measurement of the Transverse Target and Beam-Target Asymmetries in η Meson Photoproduction at MAMI

Akondi, C. S.; Annand, J. R. M.; Arends, H. J.; Beck, R.; Bernstein, A.; Borisov, N.; Braghieri, A.; Briscoe, W. J.; Cherepnya, S.; Collicott, C.; Costanza, S.; Downie, E. J.; Dieterle, M.; Fix, A.; Fil’kov, L. V.; Garni, S.; Glazier, D. I.; Gradl, W.; Gurevich, G.; Hall Barrientos, P.; Hamilton, D.; Hornidge, D.; Howdle, D.; Huber, G. M.; Kashevarov, V. L.; Keshelashvili, I.; Kondratiev, R.; Korolija, M.; Krusche, B.; Lazarev, A.; Lisin, V.; Livingston, K.; MacGregor, I. J. D.; Mancel, J.; Manley, D. M.; Martel, P.; McNicoll, E. F.; Meyer, W.; Middleton, D.; Miskimen, R.; Mushkarenkov, A.; Nefkens, B. M. K.; Neganov, A.; Nikolaev, A.; Oberle, M.; Ostrick, M.; Ortega, H.; Ott, P.; Otte, P. B.; Oussena, B.; Pedroni, P.; Polonski, A.; Polyanski, V. V.; Prakhov, S.; Reicherz, G.; Rostomyan, T.; Sarty, A.; Schumann, S.; Steffen, O.; Strakovsky, I. I.; Strub, Th.; Supek, I.; Tiator, L.; Thomas, A.; Unverzagt, M.; Usov, Yu. A.; Watts, D. P.; Werthmüller, D.; Witthauer, L.; Wolfes, M.

Author(s)

Akondi, C. S.; Annand, J. R. M.; Arends, H. J.; Beck, R.; Borisov, N.; ... Show more

DownloadPhysRevLett.113.102001.pdf (349.4Kb)

PUBLISHER_POLICY

Terms of use

Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.

Metadata

Show full item record

Abstract

We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the [→ over γ][→ over p] → ηp reaction up to a center-of-mass energy of W = 1.9 GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.

Date issued

2014-09

URI

http://hdl.handle.net/1721.1/89202

Department

Massachusetts Institute of Technology. Department of Physics

Journal

Physical Review Letters

Publisher

American Physical Society

Citation

Akondi, C. S., et al. "Measurement of the Transverse Target and Beam-Target Asymmetries in η Meson Photoproduction at MAMI." Phys. Rev. Lett. 113, 102001 (September 2014). © 2014 American Physical Society

Version: Final published version

ISSN

0031-9007

1079-7114

Collections

MIT Open Access Articles

MIT Libraries homeDSpace@MIT