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

descriptionPublicationkeyboard_double_arrow_right Article , Preprint 01 Mar 2003Embargo end date: 01 Jan 2002 Italy, Italy, Italy, Italy, Poland, Italy, Netherlands, United Kingdom, Italy, Italy English Publisher:Springer Science and Business Media LLCJournal:Journal of High Energy Physics, volume 2,013 (eissn: 1029-8479,

Copyright policy )Funded by:NSERC | unidentified, DFG | Particles, Strings, and t..., UKRI | RootDetect: Remote Detect...

Authors: S. Chekanov; D. Krakauer; S. Magill; B. Musgrave; J. Repond; R. Yoshida; M. C. K.; +193 Authors

S. Chekanov; D. Krakauer; S. Magill; B. Musgrave; J. Repond; R. Yoshida; M. C. K.; P. Antonioli; G. Bari; M. Basile; L. Bellagamba; D. Boscherini; A. Bruni; G. Bruni; G. C. Romeo; L. Cifarelli; F. Cindolo; A. Contin; M. Corradi; S. D. Pasquale; P. Giusti; G. Iacobucci; A. Margotti; R. Nania; F. Palmonari; A. Pesci; G. Sartorelli; A. Zichichi; G. Aghuzumtsyan; D. Bartsch; I. Brock; S. Goers; H. Hartmann; E. Hilger; P. Irrgang; H. P. Jakob; A. Kappes; U. F. Katz; O. Kind; E. Paul; J. Rautenberg; R. Renner; H. Schnurbusch; A. Stifutkin; J. Tandler; K. C. Voss; M. Wang; A. Weber; D. S. Bailey; N. H. Brook; J. E. Cole; B. Foster; G. P. Heath; H. F. Heath; S. Robins; E. Rodrigues; J. Scott; R. J. Tapper; M. Wing; M. Capua; A. Mastroberardino; M. Schioppa; G. Susinno; J. Y. Kim; Y. K. Kim; J. H. Lee; I. T. Lim; M. Y. Pac; A. Caldwell; M. Helbich; X. Liu; B. Mellado; Y. Ning; S. Paganis; Z. Ren; W. B. Schmidke; F. Sciulli; J. Chwastowski; A. Eskreys; J. Figiel; K. Olkiewicz; P. Stopa; L. Zawiejski; L. Adamczyk; T. Bold; I. Grabowska Bold; D. Kisielewska; A. M. Kowal; M. Kowal; T. Kowalski; M. Przybycien; L. Suszycki; D. Szuba; J. Szuba; A. Kotasnski; W. Slominski; L. A. T.; U. Behrens; I. Bloch; K. Borras; V. Chiochia; D. Dannheim; M. Derrick; G. Drews; J. Fourletova; A. Fox Murphy; U. Fricke; A. Geiser; F. Goebel; P. Gottlicher; O. Gutsche; T. Haas; W. Hain; G. F. Hartner; S. Hillert; U. Kotz; H. Kowalski; G. Kramberger; H. Labes; D. Lelas; B. Lohr; R. Mankel; I. A. Melzer Pellmann; M. Moritz; D. Notz; M. C. Petrucci; A. Polini; A. Raval; U. Schneekloth; F. Selonke; H. Wessoleck; R. Wichmann; G. Wolf; C. Youngman; W. Zeuner; A. L. D.; A. Meyer; S. Schlenstedt; G. Barbagli; E. Gallo; C. Genta; P. G. Pelfer; A. Bamberger; A. Benen; N. Coppola; M. Bell; P. J. Bussey; A. T. Doyle; C. Glasman; S. Hanlon; S. W. Lee; A. Lupi; G. J. McCance; D. H. Saxon; I. O. Skillicorn; I. Gialas; B. Bodmann; T. Carli; U. Holm; K. Klimek; N. Krumnack; E. Lohrmann; M. Milite; H. Salehi; S. Stonjek; K. Wick; A. Ziegler; A. Ziegler; C. Collins Tooth; C. Foudas; R. Goncalo; K. R. Long; F. Metlica; A. D. Tapper; P. Cloth; D. Filges; M. Kuze; K. Nagano; K. Tokushuku; S. Yamada; Y. Yamazaki; A. N. Barakbaev; E. G. Boos; N. S. Pokrovskiy; B. O. Zhautykov; H. Lim; D. Son; F. Barreiro; O. Gonzalez; L. Labarga; J. d. Peso; I. Redondo; E. Tassi; J. Terron; M. Vazquez; M. Barbi; A. Bertolin; F. Corriveau; A. Ochs; S. Padhi;

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

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Abstract

AbstractThe cross sections for inelastic photoproduction ofJ/ψandψ′ mesons have been measured inepcollisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb−1collected in the period 1996–2007. Theψ′ toJ/ψ cross section ratio was measured in the range 0.55 < z < 0.9 and 60 < W < 190 GeV as a function ofW,zandpT. HereWdenotes the photon-proton centre-of-mass energy,zis the fraction of the incident photon energy carried by the meson andpTis the transverse momentum of the meson with respect to the beam axis. TheJ/ψcross sections were measured for 0.1 < z < 0.9, 60 < W < 240 GeV andpT > 1 GeV. Theoretical predictions within the non-relativistic QCD framework including NLO colour-singlet and colour-octet contributions were compared to the data, as were predictions based on thekT-factorisation approach.

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Italy, Italy, Italy, Italy, Poland, Italy, Netherlands, United Kingdom, Italy, Italy

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Keywords

Nuclear and High Energy Physics, ZEUS; CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; LUND MONTE-CARLO; ROOT S=1.8 TEV; P(P)OVER-BAR COLLISIONS; PARTON DISTRIBUTIONS; QUARKONIUM PRODUCTION; JET FRAGMENTATION; MESONS; CONSTRUCTION, FOS: Physical sciences, lepton-nucleon scattering, 530, QCD, High Energy Physics - Experiment, CENTRAL TRACKING DETECTOR; ZEUS BARREL CALORIMETER; LUND MONTE-CARLO; ROOT S=1.8 TEV; P(P)OVER-BAR COLLISIONS; PARTON DISTRIBUTIONS; QUARKONIUM PRODUCTION; JET FRAGMENTATION; MESONS; CONSTRUCTION, High Energy Physics - Experiment (hep-ex), High Energy Physics; HERA; ZEUS Collaboration, Lepton-Nucleon Scattering; QCD; J/PSI and PSI' PHOTOPRODUCTION, lepton-nucleon scattering; qcd, QC

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