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 GeV2File in questo prodotto:
File | Dimensione | Formato | |
---|---|---|---|
fulltext.pdf
Accesso riservato
Tipo di file:
POSTPRINT (VERSIONE FINALE DELL’AUTORE)
Dimensione
473 kB
Formato
Adobe PDF
|
473 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.