Measurement of double-spin asymmetries associated with deeply virtual Compton scattering on a transversely polarized hydrogen target

被引：65

作者：

Airapetian, A. ^{[2
,16
]}

Akopov, N. ^{[28
]}

Akopov, Z. ^{[6
]}

Aschenauer, E. C. ^{[7
]}

Augustyniak, W. ^{[27
]}

Avakian, R. ^{[28
]}

Avetissian, A. ^{[28
]}

Avetisyan, E. ^{[6
]}

Belostotski, S. ^{[19
]}

Bianchi, N. ^{[11
]}

Blok, H. P. ^{[18
,26
]}

Borissov, A. ^{[6
]}

Bowles, J. ^{[14
]}

Brodski, I. ^{[13
]}

Bryzgalov, V. ^{[20
]}

Burns, J. ^{[14
]}

Capiluppi, M. ^{[9
,10
]}

Capitani, G. P. ^{[11
]}

Cisbani, E. ^{[22
,23
]}

Ciullo, G. ^{[9
,10
]}

Contalbrigo, M. ^{[9
,10
]}

Dalpiaz, P. F. ^{[9
,10
]}

Deconinck, W. ^{[6
]}

De Leo, R. ^{[3
]}

De Nardo, L. ^{[6
,12
]}

De Sanctis, E. ^{[11
]}

Di Nezza, P. ^{[11
]}

Dueren, M. ^{[13
]}

Ehrenfried, M. ^{[13
]}

Elbakian, G. ^{[28
]}

Ellinghaus, F. ^{[5
]}

Fabbri, R. ^{[7
]}

Fantoni, A. ^{[11
]}

Felawka, L. ^{[24
]}

Frullani, S. ^{[22
,23
]}

Gabbert, D. ^{[7
]}

Gapienko, G. ^{[20
]}

Gapienko, V. ^{[20
]}

Garibaldi, F. ^{[22
,23
]}

Gavrilov, G. ^{[6
,19
,24
]}

Gharibyan, V. ^{[28
]}

Giordano, F. ^{[6
,9
,10
]}

Gliske, S. ^{[2
,16
]}

Golembiovskaya, M. ^{[7
]}

Hartig, M. ^{[6
]}

Hasch, D. ^{[11
]}

Hoek, M. ^{[14
]}

Holler, Y. ^{[6
]}

Hristova, I. ^{[7
]}

Imazu, Y. ^{[25
]}

机构：

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

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

[3] Ist Nazl Fis Nucl, Sez Bari, I-70124 Bari, Italy

[4] Peking Univ, Sch Phys, Beijing 100871, Peoples R China

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

[6] DESY, D-22603 Hamburg, Germany

[7] DESY, D-15738 Zeuthen, Germany

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

[9] Univ Ferrara, Ist Nazl Fis Nucl, Sez Ferrara, I-44100 Ferrara, Italy

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

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

[12] Univ Ghent, Dept Subat & Radiat Phys, B-9000 Ghent, Belgium

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

[14] Univ Glasgow, Sch Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland

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

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

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

[18] Natl Inst Subat Phys Nikhef, NL-1009 DB Amsterdam, Netherlands

[19] Petersburg Nucl Phys Inst, Gatchina 188300, Leningrad Regio, Russia

[20] Inst High Energy Phys, Protvino 142281, Moscow Region, Russia

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

[22] Ist Nazl Fis Nucl, Sez Roma, Grp Sanita, I-00161 Rome, Italy

[23] Ist Super Sanita, I-00161 Rome, Italy

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

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

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

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

[28] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

PHYSICS LETTERS B | 2011年 / 704卷 / 1-2期

基金：

中国国家自然科学基金; 英国科学技术设施理事会; 美国国家科学基金会; 加拿大自然科学与工程研究理事会; 英国工程与自然科学研究理事会;

关键词：

HERMES experiments; GPDs; DVCS; Transversely polarized hydrogen target; GENERALIZED PARTON DISTRIBUTIONS; EVOLUTION KERNELS; NUCLEON;

D O I：

10.1016/j.physletb.2011.08.067

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Double-spin asymmetries in exclusive electroproduction of real photons from a transversely polarized hydrogen target are measured with respect to the product of target polarization with beam helicity and beam charge, and with respect to the product of target polarization with beam helicity alone. The asymmetries arise from the deeply virtual Compton scattering process and its interference with the Bethe-Heitler process. They are related to the real part of the same combination of Compton form factors as that determining the previously published transverse target single-spin asymmetries through the imaginary part. The results for the double-spin asymmetries are found to be compatible with zero within the uncertainties of the measurement, and are not incompatible with the predictions of the only available GPD-based calculation. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：15 / 23

页数：9

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