Transverse momentum in semi-inclusive polarized deep inelastic scattering and the spin-flavor structure of the proton

被引:14
作者
Bass, SD
机构
[1] Univ Innsbruck, Inst Expt Phys, High Energy Phys Grp, A-6020 Innsbruck, Austria
[2] Univ Innsbruck, Inst Theoret Phys, A-6020 Innsbruck, Austria
来源
PHYSICAL REVIEW D | 2003年 / 67卷 / 09期
关键词
D O I
10.1103/PhysRevD.67.097502
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
The nonvalence spin-flavor structure of the proton extracted from semi-inclusive measurements of polarized deep inelastic scattering depends strongly on the transverse momentum of the detected hadrons which are used to determine the individual polarized sea distributions. This physics may explain the recent HERMES observation of a positively polarized strange sea through semi-inclusive scattering, in contrast with the negative strange sea polarization deduced from inclusive polarized deep inelastic scattering.
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页数:4
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共 34 条
[1]   Flavor decomposition of the polarized quark distributions in the nucleon from inclusive and semi-inclusive deep-inelastic scattering [J].
Ackerstaff, K ;
Airapetian, A ;
Akopov, N ;
Akushevich, I ;
Amarian, M ;
Aschenauer, EC ;
Avakian, H ;
Avakian, R ;
Avetissian, A ;
Bains, B ;
Barrow, S ;
Baumgarten, C ;
Beckmann, M ;
Belostotski, S ;
Belz, JE ;
Benisch, T ;
Bernreuther, S ;
Bianchi, N ;
Blanchard, S ;
Blouw, J ;
Böttcher, H ;
Borissov, A ;
Brack, J ;
Bray, B ;
Brauksiepe, S ;
Braun, B ;
Brons, S ;
Brückner, W ;
Brüll, A ;
Bruins, EEW ;
Bulten, HJ ;
Cadman, RV ;
Capitani, GP ;
Carter, P ;
Chumney, P ;
Cisbani, E ;
Court, GR ;
Dalpiaz, PF ;
De Leo, R ;
Delheij, PPJ ;
De Sanctis, E ;
De Schepper, D ;
Devitsin, E ;
Huberts, PKAD ;
Di Nezza, P ;
Düren, M ;
Dvoredsky, A ;
Ely, J ;
Elbakian, G ;
Emerson, J .
PHYSICS LETTERS B, 1999, 464 (1-2) :123-134
[2]   Polarised quark distributions in the nucleon from semi-inclusive spin asymmetries [J].
Adeva, B ;
Akdogan, T ;
Arik, E ;
Arvidson, A ;
Badelek, B ;
Bardin, G ;
Baum, G ;
Berglund, P ;
Betev, L ;
Birsa, R ;
de Botton, N ;
Bradamante, F ;
Bravar, A ;
Bressan, A ;
Bultmann, S ;
Burtin, E ;
Crabb, D ;
Cranshaw, J ;
Cuhadar, T ;
Dalla Torre, S ;
van Dantzig, R ;
Derro, B ;
Deshpande, A ;
Dhawan, S ;
Dulya, C ;
Eichblatt, S ;
Fasching, D ;
Feinstein, F ;
Fernandez, C ;
Forthmann, S ;
Frois, B ;
Gallas, A ;
Garzon, JA ;
Gilly, H ;
Giorgi, M ;
von Goeler, E ;
Goertz, S ;
Gracia, G ;
de Groot, N ;
Grosse Perdekamp, M ;
Haft, K ;
von Harrach, D ;
Hasegawa, T ;
Hautle, P ;
Hayashi, N ;
Heusch, CA ;
Horikawa, N ;
Hughes, VW ;
Igo, G ;
Ishimoto, S .
PHYSICS LETTERS B, 1998, 420 (1-2) :180-190
[3]   AXIAL-VECTOR VERTEX IN SPINOR ELECTRODYNAMICS [J].
ADLER, SL .
PHYSICAL REVIEW, 1969, 177 (5P2) :2426-&
[4]  
ALGUARD MJ, 1976, PHYS REV LETT, V37, P1261, DOI 10.1103/PhysRevLett.37.1261
[5]   DEEP-INELASTIC E-P ASYMMETRY MEASUREMENTS AND COMPARISON WITH BJORKEN SUM-RULE AND MODELS OF PROTON SPIN STRUCTURE [J].
ALGUARD, MJ ;
ASH, WW ;
BAUM, G ;
BERGSTROM, MR ;
CLENDENIN, JE ;
COOPER, PS ;
COWARD, DH ;
EHRLICH, RD ;
HUGHES, VW ;
KONDO, K ;
LUBELL, MS ;
MILLER, RH ;
MIYASHITA, S ;
PALMER, DA ;
RAITH, W ;
SASAO, N ;
SCHULER, KP ;
SHERDEN, DJ ;
SOUDER, PA ;
ZELLER, ME .
PHYSICAL REVIEW LETTERS, 1978, 41 (02) :70-73
[6]   THE ANOMALOUS GLUON CONTRIBUTION TO POLARIZED LEPTOPRODUCTION [J].
ALTARELLI, G ;
ROSS, GG .
PHYSICS LETTERS B, 1988, 212 (03) :391-396
[7]   THE THEORY AND PHENOMENOLOGY OF POLARIZED DEEP-INELASTIC SCATTERING [J].
ANSELMINO, M ;
EFREMOV, A ;
LEADER, E .
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 1995, 261 (1-2) :1-+
[8]  
BADELEK B, COMMUNICATION
[9]  
Bass S. D., 1991, Journal of the Moscow Physical Society, V1, P317
[10]   Heavy-quark axial charges to nonleading order [J].
Bass, SD ;
Crewther, RJ ;
Steffens, FM ;
Thomas, AW .
PHYSICAL REVIEW D, 2002, 66 (03)