D* and D meson production in muon nucleon interactions at 160 GeV/c

被引:3
作者
Adolph, C. [1 ]
Alekseev, M. G. [24 ]
Alexakhin, V. Yu. [8 ]
Alexandrov, Yu. [15 ]
Alexeev, G. D. [8 ]
Amoroso, A. [28 ,29 ]
Antonov, A. A. [8 ]
Austregesilo, A. [8 ,17 ]
Badelek, B. [31 ,32 ]
Balestra, F. [28 ,29 ]
Barth, J. [5 ]
Baum, G. [2 ]
Bedfer, Y. [22 ]
Berlin, A. [3 ]
Bernhard, J. [13 ]
Bertini, R. [28 ,29 ]
Bettinelli, M. [16 ]
Bicker, K. [17 ]
Bieling, J. [5 ]
Birsa, R. [24 ]
Bisplinghoff, J. [4 ]
Bordalo, P. [12 ]
Bradamante, F. [25 ]
Braun, C. [1 ]
Bravar, A. [24 ]
Bressan, A. [25 ]
Buechele, M. [9 ]
Burtin, E. [22 ]
Capozza, L. [22 ]
Chiosso, M. [28 ,29 ]
Chung, S. U. [17 ]
Cicuttin, A. [26 ,27 ]
Crespo, M. L. [26 ,27 ]
Dalla Torre, S. [24 ]
Das, S. [7 ]
Dasgupta, S. S. [7 ]
Dasgupta, S. [7 ]
Denisov, O. Yu. [29 ]
Dhara, L. [7 ]
Donskov, S. V. [21 ]
Doshita, N. [34 ]
Duic, V. [25 ]
Duennweber, W. [16 ]
Dziewiecki, M. [33 ]
Efremov, A. [8 ]
Elia, C. [25 ]
Eversheim, P. D. [4 ]
Eyrich, W. [1 ]
Faessler, M. [16 ]
Ferrero, A. [22 ]
机构
[1] Univ Erlangen Nurnberg, Inst Phys, D-91054 Erlangen, Germany
[2] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany
[3] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany
[4] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany
[5] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
[6] AS CR, Inst Sci Instruments, Brno 61264, Czech Republic
[7] Matrivani Inst Expt Res & Educ, Kolkata 700030, W Bengal, India
[8] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia
[9] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany
[10] CERN, CH-1211 Geneva 23, Switzerland
[11] Tech Univ Liberec, Liberec 46117, Czech Republic
[12] LIP, P-1000149 Lisbon, Portugal
[13] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany
[14] Miyazaki Univ, Miyazaki 8892192, Japan
[15] PN Lebedev Phys Inst, Moscow 119991, Russia
[16] Univ Munich, Dept Phys, D-80799 Munich, Germany
[17] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany
[18] Nagoya Univ, Nagoya, Aichi 464, Japan
[19] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague, Czech Republic
[20] Czech Tech Univ, Prague 16636, Czech Republic
[21] State Res Ctr Russian Federat, Inst High Energy Phys, Protvino 142281, Russia
[22] CEA IRFU SPhN Saclay, F-91191 Gif Sur Yvette, France
[23] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel
[24] Trieste Sect INFN, I-34127 Trieste, Italy
[25] Univ Trieste, Dept Phys & Trieste Sect INFN, I-34127 Trieste, Italy
[26] Abdus Salam Int Ctr Theoret Phys, I-34127 Trieste, Italy
[27] Trieste Sect INFN, I-34127 Trieste, Italy
[28] Univ Turin, Dept Phys, I-10125 Turin, Italy
[29] Torino Sect INFN, I-10125 Turin, Italy
[30] Univ Piemonte Orientale, I-15100 Alessandria, Italy
[31] Natl Ctr Nucl Res, PL-00681 Warsaw, Poland
[32] Univ Warsaw, PL-00681 Warsaw, Poland
[33] Warsaw Univ Technol, Inst Radioelect, PL-00665 Warsaw, Poland
[34] Yamagata Univ, Yamagata 9928510, Japan
[35] KEK, 1-1 Oho, Tsukuba, Ibaraki 3050801, Japan
[36] Chubu Univ, Kasugai, Aichi 4878501, Japan
来源
EUROPEAN PHYSICAL JOURNAL C | 2012年 / 72卷 / 12期
基金
以色列科学基金会;
关键词
PRODUCTION CROSS-SECTION; MONTE-CARLO GENERATOR; CHARM PHOTOPRODUCTION; QCD CORRECTIONS; ASYMMETRIES; D-ASTERISK(+/-); SCATTERING; PROTON;
D O I
10.1140/epjc/s10052-012-2253-1
中图分类号
O412 [相对论、场论]; O572.2 [粒子物理学];
学科分类号
摘要
The production of D* and D mesons in inelastic scattering of 160 GeV/c muons off a (LiD)-Li-6 target has been investigated with the COMPASS spectrometer at CERN for 0.003 (GeV/c)(2) < Q(2) < 10 (GeV/c)(2) and 3 x 10(-5) < x(Bj) < 0.1. The study is based on 8100 events where a D-0 or (D) over bar (0) is detected subsequently to a D*(+) or D*(-) decay, and on 34000 events, where only a D-0 or (D) over bar (0) is detected. Kinematic distributions of D*, D and K-2* (1430) are given as a function of their energy E, transverse momentum p(T), energy fraction z, and of the virtual photon variables nu, Q(2) and x(Bj). Semi-inclusive differential D* production cross-sections are compared with theoretical predictions for D* production via photon-gluon fusion into open charm. The total observed production cross-section for D*(+/-) mesons with laboratory energies between 22 and 86 GeV is (1.9 +/- 0.4) nb. Significant cross-section asymmetries are observed between D*(+) and D*(-) production for nu < 40 GeV and z > 0.6.
引用
收藏
页码:1 / 17
页数:17
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