The cross sections for inelastic photoproduction of J/Psi and Psi′ mesons have been measured in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb−1 collected in the period 1996–2007. The psi′ to J/psi cross section ratio was measured in the range 0.55 < z < 0.9 and 60 < W < 190GeV as a function of W, z and pT . Here W denotes the photon-proton centre-of-mass energy, z is the fraction of the incident photon energy carried by the meson and pT is the transverse momentum of the meson with respect to the beam axis. The J/psi cross sections were measured for 0.1 < z < 0.9, 60 < W < 240GeV and pT > 1GeV. Theoretical predictions within the nonrelativistic QCD framework including NLO colour-singlet and colour-octet contributions were compared to the data, as were predictions based on the kT -factorisation approach.

H., A., I., A., L., A., M., A., R., A., S., A., et al. (2013). Measurement of inelastic J/ψ and ψ′ photoproduction at HERA. JOURNAL OF HIGH ENERGY PHYSICS, 1302(02), 1-31 [10.1007/JHEP02(2013)071].

Measurement of inelastic J/ψ and ψ′ photoproduction at HERA

BASILE, MAURIZIO;CIFARELLI, LUISA;CONTIN, ANDREA;SARTORELLI, GABRIELLA;
2013

Abstract

The cross sections for inelastic photoproduction of J/Psi and Psi′ mesons have been measured in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb−1 collected in the period 1996–2007. The psi′ to J/psi cross section ratio was measured in the range 0.55 < z < 0.9 and 60 < W < 190GeV as a function of W, z and pT . Here W denotes the photon-proton centre-of-mass energy, z is the fraction of the incident photon energy carried by the meson and pT is the transverse momentum of the meson with respect to the beam axis. The J/psi cross sections were measured for 0.1 < z < 0.9, 60 < W < 240GeV and pT > 1GeV. Theoretical predictions within the nonrelativistic QCD framework including NLO colour-singlet and colour-octet contributions were compared to the data, as were predictions based on the kT -factorisation approach.
2013
H., A., I., A., L., A., M., A., R., A., S., A., et al. (2013). Measurement of inelastic J/ψ and ψ′ photoproduction at HERA. JOURNAL OF HIGH ENERGY PHYSICS, 1302(02), 1-31 [10.1007/JHEP02(2013)071].
H., Abramowicz; I., Abt; L., Adamczyk; M., Adamus; R., Aggarwal; S., Antonelli; P., Antonioli; A., Antonov; M., Arneodo; O., Arslan; V., Aushev; Y., A...espandi
File in questo prodotto:
Eventuali allegati, non sono esposti

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/386305
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact