Measurement of single-spin azimuthal asymmetries in semi-inclusive electroproduction of pions and kaons on a longitudinally polarised deuterium target

被引：133

作者：

Airapetian, A

Akopov, N

Akopov, Z

Amarian, M

Ammosov, VV

Andrus, A

Aschenauer, EC

Augustyniak, W

Avakian, H

Avakian, R

Avetissian, A

Avetissian, E

Bailey, P

Baturin, V

Baumgarten, C

Beckmann, M

Belostotski, S

Bernreuther, S

Bianchi, N

Block, HP

Böttcher, H

Borissov, A

Bouwhuis, M

Brack, J

Brüll, A

Bryzgalov, V

Capitani, GP

Chiang, HC

Ciullo, G

Contalbrigo, M

Court, GR

Dalpiaz, PF

De Leo, R

De Nardo, L

De Sanctis, E

Devitsin, E

Di Nezza, P

Düren, M

Ehrenfried, M

Elalaoui-Moulay, A

Elbakian, G

Ellinghaus, F

Elschenbroich, U

Ely, J

Fabbri, R

Fantoni, A

Fechtchenko, A

Felawka, L

Fox, B

Franz, J

机构：

[1] Univ Ghent, Dept Subatom & Radiat Phys, B-9000 Ghent, Belgium

[2] Univ Alberta, Dept Phys, Edmonton, AB T6G 2J1, Canada

[3] Argonne Natl Lab, Div Phys, Argonne, IL 60439 USA

[4] Ist Nazl Fis Nucl, Sezione Bari, I-70124 Bari, Italy

[5] Peking Univ, Dept Phys, Beijing 100871, Peoples R China

[6] Univ Colorado, Nucl Phys Lab, Boulder, CO 80309 USA

[7] DESY, Deutsch Elektronen Synchrotron, D-22603 Hamburg, Germany

[8] DESY Zeuthen, D-15738 Zeuthen, Germany

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

[10] Univ Erlangen Nurnberg, Inst Phys, D-91058 Erlangen, Germany

[11] Univ Ferrara, Ist Nazl Fis Nucl, Sezione Ferrara, I-44100 Ferrara, Italy

[12] Univ Ferrara, Dipartimento Fis, I-44100 Ferrara, Italy

[13] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy

[14] Univ Freiburg, Fak Phys, D-79104 Freiburg, Germany

[15] Univ Giessen, Inst Phys, D-35392 Giessen, Germany

[16] Univ Glasgow, Dept Phys & Astron, Glasgow G12 8QQ, Lanark, Scotland

[17] Univ Illinois, Dept Phys, Urbana, IL 61801 USA

[18] Univ Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, England

[19] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA

[20] MIT, Nucl Sci Lab, Cambridge, MA 02139 USA

[21] Univ Michigan, Randall Lab Phys, Ann Arbor, MI 48109 USA

[22] PN Lebedev Phys Inst, Moscow 117924, Russia

[23] Univ Munich, Sekt Phys, D-85748 Garching, Germany

[24] Natl Inst Nucl Phys & High Energy Phys, NIKHEF, NL-1009 DB Amsterdam, Netherlands

[25] St Petersburg Nucl Phys Inst, Gatchina 188350, Russia

[26] Inst High Energy Phys, Protvino 142284, Moscow Region, Russia

[27] Univ Regensburg, Inst Theoret Phys, D-93040 Regensburg, Germany

[28] Ist Super Sanita, Ist Nazl Fis Nucl, Sezione Roma 1, Grp Sanita, I-00161 Rome, Italy

[29] Ist Super Sanita, Phys Lab, I-00161 Rome, Italy

[30] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[31] TRIUMF, Vancouver, BC V6T 2A3, Canada

[32] Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan

[33] Vrije Univ Amsterdam, Dept Phys & Astron, NL-1081 HV Amsterdam, Netherlands

[34] Andrzej Soltan Inst Nucl Studies, PL-00689 Warsaw, Poland

[35] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICS LETTERS B | 2003年 / 562卷 / 3-4期

基金：

美国国家科学基金会; 日本学术振兴会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/S0370-2693(03)00566-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Single-spin asymmetries have been measured for semi-inclusive electroproduction of pi(+), pi(-), pi(0) and K+ mesons in deep-inelastic scattering off a longitudinally polarised deuterium target. The asymmetries appear in the distribution of the hadrons in the azimuthal angle phi around the virtual photon direction, relative to the lepton scattering plane. The corresponding analysing powers in the sinphi moment of the cross section are 0.012 +/- 0.002(stat.) +/- 0.002(syst.) for pi(+), 0.006 +/- 0.003(stat.) +/- 0.002(syst.) for pi(-), 0.021 +/- 0.005(stat.) +/- 0.003(syst.) for pi(0) and 0.013 +/- 0.006(stat.) +/- 0.003(syst.) for K The sin 20 moments are compatible with zero for all particles. (C) 2003 Elsevier Science B.V All rights reserved.

引用

页码：182 / 192

页数：11

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