Single-spin/azimuthal asymmetries in semi-inclusive and exclusive DIS

被引：0

作者：

Miller, CA ^{[1
]}

机构：

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

来源：

INTERSECTIONS OF PARTICLE AND NUCLEAR PHYSICS | 2000年 / 549卷

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中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Recent measurements of pion production in deeply inelastic scattering of positrons have revealed azimuthal distributions of the pions that are proportional to the polarization of only the target nucleon. Such spin-azimuthal asymmetries from semiinclusive measurements can be interpreted in terms of previously unobserved quark distribution functions related to transversity, which represents the probability of finding a transversely polarized quark in a nucleon polarized transverse to its (infinite)) momentum. Much larger asymmetries have now been seen in the exclusive kinematic limit. Their interpretation is more problematic.

引用

页码：712 / 717

页数：4

共 19 条

[1] Evidence for a single-spin azimuthal asymmetry in semi-inclusive pion electroproduction [J].

Airapetian, A ;

Akopov, N ;

Amarian, M ;

Aschenauer, EC ;

Avakian, H ;

Avakian, R ;

Avetissian, A ;

Avetissian, E ;

Bains, B ;

Baumgarten, C ;

Beckmann, M ;

Belostotski, S ;

Belz, JE ;

Benisch, T ;

Bernreuther, S ;

Bianchi, N ;

Blouw, J ;

Böttcher, H ;

Borissov, A ;

Bouwhuis, M ;

Brack, J ;

Brauksiepe, S ;

Braun, B ;

Bray, B ;

Brons, S ;

Brückner, W ;

Brüll, A ;

Bruins, EEW ;

Bulten, HJ ;

Capitani, GP ;

Carter, P ;

Chumney, P ;

Cisbani, E ;

Court, GR ;

Dalpiaz, PF ;

De Sanctis, E ;

De Schepper, D ;

Devitsin, E ;

Huberts, PKAD ;

Di Nezza, P ;

Düren, M ;

Dvoredsky, A ;

Elbakian, G ;

Ely, J ;

Fantoni, A ;

Fechtchenko, A ;

Ferstl, M ;

Fiedler, K ;

Filippone, BW ;

Fischer, H .

PHYSICAL REVIEW LETTERS, 2000, 84 (18) :4047-4051

[2] TRANSVERSELY POLARIZED PARTON DENSITIES, THEIR EVOLUTION AND THEIR MEASUREMENT [J].

ARTRU, X ;

MEKHFI, M .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1990, 45 (04) :669-676

[3]

AVAKIAN H, 2000, DIS2000 LIV APR

[4] HIGHER-TWIST EFFECTS IN QCD, DEEP INELASTIC-SCATTERING, AND THE DRELL-YAN PROCESS [J].

BERGER, EL .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1980, 4 (04) :289-299

[5]

Boglione M, 2000, PHYS REV D, V61, DOI 10.1103/PhysRevD.61.114001

[6] Azimuthal spin asymmetries in semi-inclusive production from positron-proton scattering [J].

Boglione, M ;

Mulders, PJ .

PHYSICS LETTERS B, 2000, 478 (1-3) :114-120

[7] SEMI-EXCLUSIVE PION-PRODUCTION IN DEEP-INELASTIC SCATTERING [J].

BRANDENBURG, A ;

KHOZE, VV ;

MULLER, D .

PHYSICS LETTERS B, 1995, 347 (3-4) :413-418

[8] Hadron azimuthal distributions and transverse spin asymmetries in DIS of leptons off transversely polarized targets from SMC [J].

Bravar, A .

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS, 1999, 79 :520-522

[9] MEASURING TRANSVERSITY DENSITIES IN SINGLY POLARIZED HADRON-HADRON AND LEPTON HADRON-COLLISIONS [J].

COLLINS, JC ;

HEPPELMANN, SF ;

LADINSKY, GA .

NUCLEAR PHYSICS B, 1994, 420 (03) :565-582

[10] MEASURING THE TRANSVERSE POLARIZATION OF QUARKS IN THE PROTON [J].

CORTES, JL ;

PIRE, B ;

RALSTON, JP .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1992, 55 (03) :409-416

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