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

页码：1 / 17

页数：17

共 37 条

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