Measurement of the J/ψ production cross section in 920 GeV/c fixed-target proton–nucleus interactions

• DOI: 10.1016/j.physletb.2006.03.064
• Publication Date: 2006-04-18T19:18:47Z
• Authors: I. Abt; M. Adams; M. Agari; H. Albrecht; A. Aleksandrov; V. Amaral; A. Amorim; S.J. Aplin; V. Aushev; Y. Bagaturia; V. Balagura; M. Bargiotti; O. Barsukova; J. Bastos; J. Batista; C. Bauer; Th.S. Bauer; A. Belkov; Ar. Belkov; I. Belotelov; A. Bertin; B. Bobchenko; M. Böcker; A. Bogatyrev; G. Bohm; M. Bräuer; M. Bruinsma; M. Bruschi; P. Buchholz; T. Buran; J. Carvalho; P. Conde; C. Cruse; M. Dam; K.M. Danielsen; M. Danilov; S. De Castro; H. Deppe; X. Dong; H.B. Dreis; V. Egorytchev; K. Ehret; F. Eisele; D. Emeliyanov; S. Essenov; L. Fabbri; P. Faccioli; M. Feuerstack-Raible; J. Flammer; B. Fominykh; M. Funcke; Ll. Garrido; A. Gellrich; B. Giacobbe; J. Gläß; D. Goloubkov; Y. Golubkov; A. Golutvin; I. Golutvin; I. Gorbounov; A. Gorišek; O. Gouchtchine; D.C. Goulart; S. Gradl; W. Gradl; F. Grimaldi; Yu. Guilitsky; J.D. Hansen; J.M. Hernández; W. Hofmann; M. Hohlmann; T. Hott; W. Hulsbergen; U. Husemann; O. Igonkina; M. Ispiryan; T. Jagla; C. Jiang; H. Kapitza; S. Karabekyan; N. Karpenko; S. Keller; J. Kessler; F. Khasanov; Yu. Kiryushin; I. Kisel; E. Klinkby; K.T. Knöpfle; H. Kolanoski; S. Korpar; C. Krauss; P. Kreuzer; P. Križan; D. Krücker; S. Kupper; T. Kvaratskheliia; A. Lanyov; K. Lau; B. Lewendel; T. Lohse; B. Lomonosov; R. Männer; R. Mankel; S. Masciocchi; I. Massa; I. Matchikhilian; G. Medin; M. Medinnis; M. Mevius; A. Michetti; Yu. Mikhailov; R. Mizuk; R. Muresan; M. zur Nedden; M. Negodaev; M. Nörenberg; S. Nowak; M.T. Núñez Pardo ...; M. Ouchrif; F. Ould-Saada; C. Padilla; D. Peralta; R. Pernack; R. Pestotnik; B.AA. Petersen; M. Piccinini; M.A. Pleier; M. Poli; V. Popov; D. Pose; S. Prystupa; V. Pugatch; Y. Pylypchenko; J. Pyrlik; K. Reeves; D. Reßing; H. Rick; I. Riu; P. Robmann; I. Rostovtseva; V. Rybnikov; F. Sánchez; A. Sbrizzi; M. Schmelling; B. Schmidt; A. Schreiner; H. Schröder; U. Schwanke; A.J. Schwartz; A.S. Schwarz; B. Schwenninger; B. Schwingenheuer; F. Sciacca; N. Semprini-Cesari; S. Shuvalov; L. Silva; L. Sözüer; S. Solunin; A. Somov; S. Somov; J. Spengler; R. Spighi; A. Spiridonov; A. Stanovnik; M. Starič; C. Stegmann; H.S. Subramania; M. Symalla; I. Tikhomirov; M. Titov; I. Tsakov; U. Uwer; C. van Eldik; Yu. Vassiliev; M. Villa; A. Vitale; I. Vukotic; H. Wahlberg; A.H. Walenta; M. Walter; J.J. Wang; D. Wegener; U. Werthenbach; H. Wolters; R. Wurth; A. Wurz; Yu. Zaitsev; M. Zavertyaev; T. Zeuner; A. Zhelezov; Z. Zheng; R. Zimmermann; T. Živko; A. Zoccoli
• Keywords: 0103 physical sciences; 01 natural sciences; High Energy Physics - Experiment

The mid-rapidity (dsigma_(pN)/dy at y=0) and total sigma_(pN) production cross sections of J/Psi mesons are measured in proton-nucleus interactions. Data collected by the HERA-B experiment in interactions of 920 GeV/c protons with carbon, titanium and tungsten targets are used for this analysis. The J/Psi mesons are reconstructed by their decay into lepton pairs. The total production cross section obtained is sigma_(pN)(J/Psi) = 663 +- 74 +- 46 nb/nucleon. In addition, our result is compared with previous measurements.