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Journal articles
First Measurement of the $\Sigma$ Beam Asymmetry in $\eta^{\prime}$ Photoproduction off the Proton near Threshold
P. Levi Sandri
G. Mandaglio
V. de Leo
O. Bartalini
V. Bellini
J.P. Bocquet
1
M. Capogni
F. Curciarello
J. P. Didelez
A. d'Angelo
R. Di Salvo
A. Fantini
D. Franco
G. Gervino
F. Ghio
B. Girolami
A. Giusa
A. Lapik
A. Lleres
1
F. Mammoliti
M. Manganaro
D. Moricciani
A. Mushkarenkov
V. Nedorezov
C. Randieri
D. Rebreyend
1
N. Rudnev
G. Russo
C. Schaerf
M. L. Sperduto
M. C. Sutera
A. Turinge
V. Vegna
I. Zonta
1
LPSC - Laboratoire de Physique Subatomique et de Cosmologie (53 avenue des Martyrs - 38026 Grenoble Cedex - France)
- UJF - Université Joseph Fourier - Grenoble 1 (BP 53 - 38041 Grenoble Cedex 9 - France)
- Grenoble INP - Institut polytechnique de Grenoble - Grenoble Institute of Technology (46 avenue Félix Viallet 38031 Grenoble Cedex 1 - France)
- IN2P3 - Institut National de Physique Nucléaire et de Physique des Particules du CNRS (France)
- Institut Polytechnique de Grenoble - Grenoble Institute of Technology (France)
- CNRS - Centre National de la Recherche Scientifique : UMR5821 (France)
Abstract : The $\Sigma$ beam asymmetry in $\eta^{\prime}$ photoproduction off the proton was measured at the GrAAL polarized photon beam with incoming photon energies of 1.461 and 1.480 GeV. For both energies the asymmetry as a function of the meson emission angle shows a clear structure, more pronounced at the lowest one, with a change of sign around 90$^o$. The results are compared to the existing theories that fail to account for the data.
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http://hal.in2p3.fr/in2p3-01053892
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, August 4, 2014 - 9:20:45 AM
Last modification on : Thursday, November 19, 2020 - 12:59:12 PM
Contributor : Emmanuelle Vernay <>
Submitted on : Monday, August 4, 2014 - 9:20:45 AM
Last modification on : Thursday, November 19, 2020 - 12:59:12 PM
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- HAL Id : in2p3-01053892, version 1
- DOI : 10.1140/epja/i2015-15077-0
- ARXIV : 1407.6991
Citation
P. Levi Sandri, G. Mandaglio, V. de Leo, O. Bartalini, V. Bellini, et al.. First Measurement of the $\Sigma$ Beam Asymmetry in $\eta^{\prime}$ Photoproduction off the Proton near Threshold. European Physical Journal A, EDP Sciences, 2015, pp.51:77. ⟨10.1140/epja/i2015-15077-0⟩. ⟨in2p3-01053892⟩
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