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

被引：21

作者：

Abt, I.

Adams, M.

Agari, M.

Albrecht, H.

Aleksandrov, A.

Amaral, V.

Amorim, A.

Aplin, S. J.

Aushev, V.

Bagaturia, Y.

Balagura, V.

Bargiotti, M.

Barsukova, O.

Bastos, J.

Batista, J.

Bauer, C.

Bauer, Th. S.

Belkov, A.

Belkov, Ar.

Belotelov, I.

Bertin, A.

Bobchenko, B.

Boecker, M.

Bogatyrev, A.

Bohm, G.

Braeuer, M.

Bruinsma, M.

Bruschi, M.

Buchholz, P.

Buran, T.

Carvalho, J.

Conde, P.

Cruse, C.

Dam, M.

Danielsen, K. M.

Danilov, M.

De Castro, S.

Deppe, H.

Dong, X.

Dreis, H. B.

Egorytchev, V.

Ehret, K.

Eisele, F.

Emeliyanov, D.

Essenov, S.

Fabbri, L.

Faccioli, P.

Feuerstack-Raible, M.

Flammer, J.

Fominykh, B.

机构：

[1] Univ Bologna, Dipartmento Fis, I-40126 Bologna, Italy

[2] NIKHEF H, NL-1009 DB Amsterdam, Netherlands

[3] Univ Barcelona, Fac Phys, Dept ECM, E-08028 Barcelona, Spain

[4] Inst High Energy Phys, Beijing 100039, Peoples R China

[5] Tsinghua Univ, Inst Engn Phys, Beijing 100084, Peoples R China

[6] Humboldt Univ, Inst Phys, D-12489 Berlin, Germany

[7] Univ Cincinnati, Dept Phys, Cincinnati, OH 45221 USA

[8] LIP Coimbra, P-3004516 Coimbra, Portugal

[9] Niels Bohr Inst, DK-2100 Copenhagen, Denmark

[10] Univ Dortmund, Inst Phys, D-44221 Dortmund, Germany

[11] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia

[12] DESY, D-22603 Hamburg, Germany

[13] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[14] Heidelberg Univ, Inst Phys, D-69120 Heidelberg, Germany

[15] Univ Houston, Dept Phys, Houston, TX 77204 USA

[16] Ukrainian Acad Sci, Inst Nucl Res, UA-03680 Kiev, Ukraine

[17] Jozef Stefan Inst, Ljubljana 1001, Slovenia

[18] Univ Ljubljana, Ljubljana 1001, Slovenia

[19] Univ Calif Los Angeles, Los Angeles, CA 90024 USA

[20] Univ Mannheim, Lehrstuhl Informat 5, D-68131 Mannheim, Germany

[21] Univ Maribor, SLO-2000 Maribor, Slovenia

[22] Inst Theoret & Expt Phys, Moscow 117259, Russia

[23] Max Planck Inst Phys & Astrophys, Werner Heisenberg Inst Phys, D-80805 Munich, Germany

[24] Univ Oslo, Dept Phys, N-0316 Oslo, Norway

[25] Univ Rostock, Fachbereich Phys, D-18051 Rostock, Germany

[26] Univ Siegen, Fachbereich Phys, D-57068 Siegen, Germany

[27] BAS, INRNE, Inst Nucl Res, Sofia, Bulgaria

[28] Univ Utrecht, NIKHEF H, NL-3584 CB Utrecht, Netherlands

[29] DESY, D-15738 Zeuthen, Germany

[30] Univ Zurich, Inst Phys, CH-8057 Zurich, Switzerland

[31] Ist Nazl Fis Nucl, Sez Bologna, I-40126 Bologna, Italy

来源：

PHYSICS LETTERS B | 2006年 / 638卷 / 5-6期

关键词：

D O I：

10.1016/j.physletb.2006.03.064

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The mid-rapidity (d sigma(pN)/d gamma at gamma = 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(J/psi)(pN) = 663 +/- 74 +/- 46 nb/nucleon. In addition, our result is compared with previous measurements. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：407 / 414

页数：8

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