Transversity distribution and polarized fragmentation function from semi-inclusive pion electroproduction

被引：49

作者：

Korotkov, VA ^{[1
]}

Nowak, WD

Oganessyan, KA

机构：

[1] IHEP, Protvino 142284, Russia

[2] DESY, D-15738 Zeuthen, Germany

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

[4] Yerevan Phys Inst, Yerevan 375036, Armenia

来源：

EUROPEAN PHYSICAL JOURNAL C | 2001年 / 18卷 / 04期

关键词：

D O I：

10.1007/s100520100564

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

A method is discussed to determine the hitherto unknown u-quark transversity distribution deltau(x) from a planned HERMES measurement of a single target-spin asymmetry in semi-inclusive pion electroproduction off a transversely polarized target. Assuming u-quark dominance, the measurement yields the shapes of the transversity distribution deltau(x) and of the ratio H-1(perpendicular to (1)u)(z)/D-1(u)(z), of polarized and unpolarized u-quark fragmentation functions. The unknown relative normalization can be obtained by identifying the transversity distribution With the well-known helicity distribution at large z and small Q(2). The systematic uncertainty of the method is dominated by the assumption of u-quark dominance.

引用

页码：639 / 644

页数：6

共 38 条

[1] Measurement of the neutron spin structure function g(2)(n) and asymmetry A(2)(n) [J].

Abe, K ;

Akagi, T ;

Anderson, BD ;

Anthony, PL ;

Arnold, RG ;

Averett, T ;

Band, HR ;

Berisso, CM ;

Bogorad, P ;

Borel, H ;

Bosted, PE ;

Breton, V ;

Buenerd, MJ ;

Cates, GD ;

Chupp, TE ;

Churchwell, S ;

Coulter, KP ;

Daoudi, M ;

Decowski, P ;

Erickson, R ;

Fellbaum, JN ;

Fonvieille, H ;

Gearhart, R ;

Ghazikhanian, V ;

Griffioen, KA ;

Hicks, RS ;

Holmes, R ;

Hughes, EW ;

Igo, G ;

Incerti, S ;

Johnson, JR ;

Kahl, W ;

Khayat, M ;

Kolomensky, YG ;

Kuhn, SE ;

Kumar, K ;

Kuriki, M ;

LombardNelsen, R ;

Manley, DM ;

Marroncle, J ;

Maruyama, T ;

Marvin, T ;

Meyer, W ;

Meziani, ZE ;

Miller, D ;

Mitchell, G ;

Olson, M ;

Peterson, GA ;

Petratos, GG ;

Pitthan, R .

PHYSICS LETTERS B, 1997, 404 (3-4) :377-382

[2]

Abe K, 1998, PHYS REV D, V58, DOI 10.1103/PhysRevD.58.112003

[3] 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

[4] The HERMES spectrometer [J].

Ackerstaff, K ;

Airapetian, A ;

Akopov, N ;

Amarian, M ;

Andreev, V ;

Aschenauer, EC ;

Avakian, R ;

Avakian, H ;

Avetissian, A ;

Bains, B ;

Barrow, S ;

Beckhusen, W ;

Beckmann, M ;

Belostotski, S ;

Belz, E ;

Benisch, T ;

Bernreuther, S ;

Bianchi, N ;

Blouw, J ;

Bottcher, H ;

Borissov, A ;

Brack, J ;

Braun, B ;

Bray, B ;

Brons, S ;

Bruckner, W ;

Brull, A ;

Bulten, HJ ;

Capitani, GP ;

Carter, P ;

Chumney, P ;

Cisbani, E ;

Clark, S ;

Colilli, S ;

Coombes, H ;

Court, GR ;

Delheij, P ;

Devitsin, E ;

de Jager, CW ;

De Sanctis, E ;

De Schepper, D ;

Huberts, PKAD ;

Di Nezza, P ;

Doets, M ;

Duren, M ;

Dvoredsky, A ;

Elbakian, G ;

Emerson, J ;

Fantoni, A ;

Fechtchenko, A .

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1998, 417 (2-3) :230-265

[5] Spin structure of the proton from polarized inclusive deep-inelastic muon-proton scattering [J].

Adams, D ;

Adeva, B ;

Arik, E ;

Arvidson, A ;

Badelek, B ;

Ballintijn, MK ;

Bardin, G ;

Baum, G ;

Berglund, P ;

Betev, L ;

Bird, IG ;

Birsa, R ;

Bjorkholm, P ;

Bonner, BE ;

deBotton, N ;

Boutemeur, M ;

Bradamante, F ;

Bravar, A ;

Bressan, A ;

Bultmann, S ;

Burtin, E ;

Cavata, C ;

Crabb, D ;

Cranshaw, J ;

Cuhadar, T ;

DallaTorre, S ;

vanDantzig, R ;

Derro, B ;

Deshpande, A ;

Dhawan, S ;

Dulya, C ;

Dyring, A ;

Eichblatt, S ;

Faivre, JC ;

Fasching, D ;

Feinstein, F ;

Fernandez, C ;

Frois, B ;

Gallas, A ;

Garzon, JA ;

Gaussiran, T ;

Giorgi, M ;

vonGoeler, E ;

Gracia, G ;

deGroot, N ;

Perdekamp, MG ;

Gulmez, E ;

vonHarrach, D ;

Hasegawa, T ;

Hautle, P .

PHYSICAL REVIEW D, 1997, 56 (09) :5330-5358

[6] 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

[7] Single spin asymmetries in deep inelastic scattering [J].

Anselmino, M ;

Leader, E ;

Murgia, F .

PHYSICAL REVIEW D, 1997, 56 (09) :6021-6024

[8] 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

[9] A SURVEY OF POLARIZATION ASYMMETRIES PREDICTED BY QCD [J].

BALDRACCHINI, F ;

CRAIGIE, NS ;

ROBERTO, V ;

SOCOLOVSKY, M .

FORTSCHRITTE DER PHYSIK-PROGRESS OF PHYSICS, 1981, 29 (11-1) :505-550

[10] NEXT-TO-LEADING ORDER FRAGMENTATION FUNCTIONS FOR PIONS AND KAONS [J].

BINNEWIES, J ;

KNIEHL, BA ;

KRAMER, G .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1995, 65 (03) :471-480

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