Transverse spin effects in hadron-pair production from semi-inclusive deep inelastic scattering

被引：66

作者：

Adolph, C. ^{[10
]}

Alekseev, M. G. ^{[2
]}

Alexakhin, V. Yu ^{[9
]}

Alexandrov, Yu ^{[17
]}

Alexeev, G. D. ^{[9
]}

Amoroso, A. ^{[27
,28
]}

Antonov, A. A. ^{[9
]}

Austregesilo, A. ^{[12
,19
]}

Badelek, B. ^{[30
,31
]}

Balestra, F. ^{[27
,28
]}

Barth, J. ^{[6
]}

Baum, G. ^{[3
]}

Bedfer, Y. ^{[24
]}

Bernhard, J. ^{[15
]}

Bertini, R. ^{[27
,28
]}

Bettinelli, M. ^{[18
]}

Bicker, K. ^{[12
,19
]}

Bieling, J. ^{[6
]}

Birsa, R. ^{[2
]}

Bisplinghoff, J. ^{[5
]}

Bordalo, P. ^{[14
,34
]}

Bradamante, F. ^{[1
,2
]}

Braun, C. ^{[10
]}

Bravar, A. ^{[2
]}

Bressan, A. ^{[1
,2
]}

Burtin, E. ^{[24
]}

Chaberny, D. ^{[15
]}

Chiosso, M. ^{[27
,28
]}

Chung, S. U. ^{[19
]}

Cicuttin, A. ^{[2
,26
]}

Crespo, M. L. ^{[2
,26
]}

Dalla Torre, S. ^{[2
]}

Das, S. ^{[8
]}

Dasgupta, S. S. ^{[8
]}

Denisov, O. Yu ^{[12
,28
]}

Dhara, L. ^{[8
]}

Donskov, S. V. ^{[23
]}

Doshita, N. ^{[4
,33
]}

Duic, V. ^{[1
,2
]}

Duennweber, W. ^{[18
]}

Dziewiecki, M. ^{[32
]}

Efremov, A. ^{[9
]}

Elia, C. ^{[1
,2
]}

Eversheim, P. D. ^{[5
]}

Eyrich, W. ^{[10
]}

Faessler, M. ^{[18
]}

Ferrero, A. ^{[24
]}

Filin, A. ^{[23
]}

Finger, M. ^{[21
]}

Finger, M., Jr. ^{[9
]}

机构：

[1] Univ Trieste, Dept Phys, I-34127 Trieste, Italy

[2] Ist Nazl Fis Nucl, Trieste Sect, I-34127 Trieste, Italy

[3] Univ Bielefeld, Fak Phys, D-33501 Bielefeld, Germany

[4] Ruhr Univ Bochum, Inst Expt Phys, D-44780 Bochum, Germany

[5] Univ Bonn, Helmholtz Inst Strahlen & Kernphys, D-53115 Bonn, Germany

[6] Univ Bonn, Inst Phys, D-53115 Bonn, Germany

[7] AS CR, Inst Sci Instruments, Brno 61264, Czech Republic

[8] Matrivani Inst Expt Res & Educ, Kolkata 700030, W Bengal, India

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

[10] Univ Erlangen Nurnberg, Inst Phys, D-91054 Erlangen, Germany

[11] Univ Freiburg, Inst Phys, D-79104 Freiburg, Germany

[12] CERN, CH-1211 Geneva 23, Switzerland

[13] Tech Univ Liberec, Liberec 46117, Czech Republic

[14] LIP, P-1000149 Lisbon, Portugal

[15] Johannes Gutenberg Univ Mainz, Inst Kernphys, D-55099 Mainz, Germany

[16] Miyazaki Univ, Miyazaki 8892192, Japan

[17] PN Lebedev Phys Inst, Moscow 119991, Russia

[18] Univ Munich, Dept Phys, D-80799 Munich, Germany

[19] Tech Univ Munich, Dept Phys, D-85748 Garching, Germany

[20] Nagoya Univ, Nagoya, Aichi 464, Japan

[21] Charles Univ Prague, Fac Math & Phys, CR-18000 Prague, Czech Republic

[22] Czech Tech Univ, Prague 16636, Czech Republic

[23] Inst High Energy Phys, State Res Ctr Russian Federat, Protvino 142281, Russia

[24] CEA IRFU SPhN Saclay, F-91191 Gif Sur Yvette, France

[25] Tel Aviv Univ, Sch Phys & Astron, IL-69978 Tel Aviv, Israel

[26] Abdus Salam Int Ctr Theoret Phys, I-34127 Trieste, Italy

[27] Univ Turin, Dept Phys, I-10125 Turin, Italy

[28] Ist Nazl Fis Nucl, Torino Sect, I-10125 Turin, Italy

[29] Univ Piemonte Orientale, I-10125 Turin, Italy

[30] Natl Ctr Nucl Res, PL-00681 Warsaw, Poland

[31] Univ Warsaw, PL-00681 Warsaw, Poland

[32] Warsaw Univ Technol, Inst Radioelect, PL-00665 Warsaw, Poland

[33] Yamagata Univ, Yamagata 9928510, Japan

[34] Univ Tecn Lisboa, Inst Super Tecn, P-1096 Lisbon, Portugal

[35] Chubu Univ, Kasugai, Aichi 4878501, Japan

[36] KEK, Tsukuba, Ibaraki 3050801, Japan

[37] GSI MbH, D-64291 Darmstadt, Germany

来源：

PHYSICS LETTERS B | 2012年 / 713卷 / 01期

基金：

以色列科学基金会;

关键词：

ODD PARTON DISTRIBUTIONS; FRAGMENTATION; COLLINS; QUARKS;

D O I：

10.1016/j.physletb.2012.05.015

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

First measurements of azimuthal asymmetries in hadron-pair production in deep-inelastic scattering of muons on transversely polarised (LiD)-Li-6 (deuteron) and NH3 (proton) targets are presented. The data were taken in the years 2002-2004 and 2007 with the COMPASS spectrometer using a muon beam of 160 GeV/c at the CERN SPS. The asymmetries provide access to the transversity distribution functions, without involving the Collins effect as in single hadron production. The sizeable asymmetries measured on the NH3 target indicate non-vanishing u-quark transversity and two-hadron interference fragmentation functions. The small asymmetries measured on the (LiD)-Li-6 target can be interpreted as indication for a cancellation of u- and d-quark transversities. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：10 / 16

页数：7

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