Exclusive electroproduction of mesons has been studied in e±p collisions at sqrt(s)=318 GeV with the ZEUS detector at HERA using an integrated luminosity of 65.1 pb−1. The γ*p cross section is presented in the kinematic range 2 GeV2<Q2<70 GeV2, 35 GeV<W<145 GeV and |t|<0.6 GeV2. The cross sections as functions of Q2, W, t and helicity angle θh are compared to cross sections for other vector mesons. The ratios R of the cross sections for longitudinally and transversely polarized virtual photons are presented as functions of Q2 and W. The data are also compared to predictions from theoretical models.

Exclusive electroproduction of phi mesons at HERA

COSTA, Marco;MONACO, Vincenzo;SACCHI, Roberto;SOLANO, Ada Maria;
2005-01-01

Abstract

Exclusive electroproduction of mesons has been studied in e±p collisions at sqrt(s)=318 GeV with the ZEUS detector at HERA using an integrated luminosity of 65.1 pb−1. The γ*p cross section is presented in the kinematic range 2 GeV2
2005
718
3
31
http://dx.doi.org/10.1016/j.nuclphysb.2005.04.009
High Energy Physics; HERA; ZEUS Collaboration
S. Chekanov;M. Derrick;S. Magill;S. Miglioranzi;B. Musgrave;J. Repond;R. Yoshida;M. C. K.;N. Pavel;A. G. Y.;P. Antonioli;G. Bari;M. Basile;L. Bellagam...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/35956
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