Measurement of the cross-section ratio σ_ψ(2S)/σ_J/ψ(1S) in deep inelastic exclusive ep scattering at HERA
Articolo
Data di Pubblicazione:
2016
Abstract:
The exclusive deep inelastic electroproduction of ψ(2S) and J/ψ(1S) at an ep centre-of-mass energy of 317 GeV has been studied with the ZEUS detector at HERA in the kinematic range 2<80 GeV^2, 30<210 GeV and |t|<1 GeV^2, where Q2 is the photon virtuality, W is the photon–proton centre-of-mass energy and t is the squared four-momentum transfer at the proton vertex. The data for 2<5 GeV^2 were taken in the HERA I running period and correspond to an integrated luminosity of 114 pb−1. The data for 5<80 GeV^2 are from both HERA I and HERA II periods and correspond to an integrated luminosity of 468 pb−1. The decay modes analysed were μ+μ− and J/ψ(1S)π+π− for the ψ(2S) and μ+μ− for the J/ψ(1S). The cross-section ratio σ_ψ(2S)/σ_J/ψ(1S) has been measured as a function of Q2, W and t. The results are compared to predictions of QCD-inspired models of exclusive vector-meson production.
Tipologia CRIS:
03A-Articolo su Rivista
Keywords:
HERA, ZEUS, Deep inelastic scattering, Psi meson production
Elenco autori:
Abramowicz H.; Abt I.; Adamczyk L.; Adamus M.; Antonelli S.; Aushev V.; Aushev Y.; Behnke O.; Behrens U.; Bertolin A.; Bloch I.; Boos E.G.; Borras K.; Brock I.; Brook N.H.; Brugnera R.; Bruni A.; Bussey P.J.; Caldwell A.; Capua M.; Catterall C.D.; Chwastowski J.; Ciborowski J.; Ciesielski R.; Cooper-Sarkar A.M.; Corradi M.; Corriveau F.; Dementiev R.K.; Devenish R.C.E.; Dolinska G.; Dusini S.; Figiel J.; Foster B.; Gach G.; Gallo E.; Garfagnini A.; Geiser A.; Gizhko A.; Gladilin L.K.; Golubkov Y.A.; Grebenyuk J.; Gregor I.; Grzelak G.; Gueta O.; Guzik M.; Hain W.; Hochman D.; Hori R.; Ibrahim Z.A.; Iga Y.; Ishitsuka M.; Iudin A.; Januschek F.; Jomhari N.Z.; Kadenko I.; Kananov S.; Karshon U.; Kaur M.; Kaur P.; Kisielewska D.; Klanner R.; Klein U.; Kondrashova N.; Kononenko O.; Korol I.; Korzhavina I.A.; Kotanski A.; Kotz U.; Kovalchuk N.; Kowalski H.; Krupa B.; Kuprash O.; Kuze M.; Levchenko B.B.; Levy A.; Libov V.; Limentani S.; Lisovyi M.; Lobodzinska E.; Lohr B.; Lohrmann E.; Longhin A.; Lontkovskyi D.; Lukina O.Y.; Makarenko I.; Malka J.; Mergelmeyer S.; Mohamad Idris F.; Mohammad Nasir N.; Myronenko V.; Nagano K.; Nobe T.; Notz D.; Nowak R.J.; Onishchuk Y.; Paul E.; Perlanski W.; Pokrovskiy N.S.; Przybycien M.; Roloff P.; Rubinsky I.; Ruspa M.; Saxon D.H.; Schioppa M.; Schmidke W.B.; Schneekloth U.; Schorner-Sadenius T.; Shcheglova L.M.; Shevchenko R.; Shkola O.; Shyrma Y.; Singh I.; Skillicorn I.O.; Slominski W.; Solano A.; Stanco L.; Stefaniuk N.; Stern A.; Stopa P.; Sztuk-Dambietz J.; Szuba D.; Szuba J.; Tassi E.; Tokushuku K.; Tomaszewska J.; Trofymov A.; Tsurugai T.; Turcato M.; Turkot O.; Tymieniecka T.; Verbytskyi A.; Viazlo O.; Walczak R.; Wan Abdullah W.A.T.; Wichmann K.; Wing M.; Wolf G.; Yamada S.; Yamazaki Y.; Zakharchuk N.; Zarnecki A.F.; Zawiejski L.; Zenaiev O.; Zhautykov B.O.; Zhmak N.; Zotkin D.S.
Link alla scheda completa:
Link al Full Text:
Pubblicato in: