Polarized parton distribution functions in the nucleon

被引：180

作者：

Goto, Y ^{[1
]}

Hayashi, N

Hirai, M

Horikawa, H

Kumano, S

Miyama, M

Morii, T

Saito, N

Shibata, TA

Taniguchi, E

Yamanishi, T

机构：

[1] Brookhaven Natl Lab, BNL Res Ctr, RIKEN, Upton, NY 11973 USA

[2] RIKEN, Inst Phys & Chem Res, Radiat Lab, Wako, Saitama 3510198, Japan

[3] Saga Univ, Dept Phys, Saga 8408502, Japan

[4] Kobe Univ, Fac Human Dev, Kobe, Hyogo 6578501, Japan

[5] Tokyo Inst Technol, Dept Phys, Tokyo 1528551, Japan

[6] Fukui Univ Technol, Dept Management Sci, Fukui 9108505, Japan

来源：

PHYSICAL REVIEW D | 2000年 / 62卷 / 03期

关键词：

D O I：

10.1103/PhysRevD.62.034017

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Polarized parton distribution functions are determined by using world data from the longitudinally polarized deep inelastic scattering experiments. A new parametrization of the parton distribution functions is adopted by taking into account the positivity and the counting rule. From the fit to the asymmetry data A(1), the polarized distribution functions of u and d valence quarks, sea quarks, and gluons are obtained. The results indicate that the quark spin content is Delta Sigma = 0.20 and 0.05 in the leading order (LO) and the next-to-leading-order (NLO) <(MS)over bar> scheme, respectively. However, if the x dependence of the sea-quark distribution is fixed at small x by ''perturbative QCD'' and Regge theory, it becomes Delta Sigma = 0.24-0.28 in the NLO. The small-x behavior cannot be uniquely determined by the existing data, which indicates the importance of future experiments. From our analysis, we propose one set of LO distributions and two sets of NLO ones as the longitudinally polarized parton distribution functions.

引用

页数：18

共 58 条

[1] Precision determination of the neutron spin structure function g(1)(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 .

PHYSICAL REVIEW LETTERS, 1997, 79 (01) :26-30

[2]

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

[3] Measurement of the neutron spin structure function g(1)(n) with a polarized He-3 internal target [J].

Ackerstaff, K ;

Airapetian, A ;

Akushevich, I ;

Akopov, N ;

Amarian, M ;

Aschenauer, EC ;

Avakian, R ;

Avakian, H ;

Avetissian, A ;

Bains, B ;

Barrow, S ;

Beckmann, M ;

Belostotski, S ;

Belz, JE ;

Benisch, T ;

Bernreuther, S ;

Bianchi, N ;

Blanchard, S ;

Blouw, J ;

Bottcher, H ;

Borissov, A ;

Brack, J ;

Braun, B ;

Bray, B ;

Bruckner, W ;

Brull, A ;

Bruins, EEW ;

Bulten, HJ ;

Capitani, GP ;

Carter, P ;

Cisbani, E ;

Court, GR ;

Delheij, PPJ ;

Devitsin, E ;

deJager, CW ;

DeSanctis, E ;

DeSchepper, D ;

Huberts, PKAD ;

Duren, M ;

Dvoredsky, A ;

Elbakian, G ;

Emerson, J ;

Fantoni, A ;

Fechtchenko, A ;

Ferstl, M ;

Fick, D ;

Fiedler, K ;

Filippone, BW ;

Fischer, H ;

Fortune, HT .

PHYSICS LETTERS B, 1997, 404 (3-4) :383-389

[4] The spin-dependent structure function g(1)(x) of the proton from polarized deep-inelastic muon scattering [J].

Adeva, B ;

Arik, E ;

Arvidson, A ;

Badelek, B ;

Bardin, G ;

Baum, G ;

Berglund, P ;

Betev, L ;

Birsa, R ;

deBotton, N ;

Bradamante, F ;

Bravar, A ;

Bressan, A ;

Bultmann, S ;

Burtin, E ;

Crabb, D ;

Cranshaw, J ;

Cuhadar, T ;

DallaTorre, S ;

vanDantzig, 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 ;

Goertz, S ;

Gracia, G ;

deGroot, N ;

Haft, K ;

vonHarrach, D ;

Hasegawa, T ;

Hautle, P ;

Hayashi, N ;

Heusch, CA ;

Horikawa, N ;

Hughes, VW ;

Igo, G ;

Ishimoto, S ;

Iwata, T ;

Kabuss, EM ;

Kageya, T .

PHYSICS LETTERS B, 1997, 412 (3-4) :414-424

[5] 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

[6] Next-to-leading order QCD analysis of the spin structure function g1 -: art. no. 112002 [J].

Adeva, B ;

Akdogan, T ;

Arik, E ;

Badelek, B ;

Bardin, G ;

Baum, G ;

Berglund, P ;

Betev, L ;

Birsa, R ;

de Botton, N ;

Bradamante, F ;

Bravar, A ;

Bressan, A ;

Bültmann, S ;

Burtin, E ;

Cavata, C ;

Crabb, D ;

Cranshaw, J ;

Çuhadai, 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 ;

Perdekamp, MG ;

Haft, K ;

von Harrach, D ;

Hasegawa, T ;

Hautle, P ;

Hayashi, N ;

Heusch, CA ;

Horikawa, N ;

Hughes, VW ;

Igo, G ;

Ishimoto, S .

PHYSICAL REVIEW D, 1998, 58 (11) :1120021+11200215

[7] Spin asymmetries A1 and structure functions g1 of the proton and the deuteron from polarized high energy muon scattering -: art. no. 112001 [J].

Adeva, B ;

Akdogan, T ;

Arik, E ;

Arvidson, A ;

Badelek, B ;

Bardin, G ;

Baum, G ;

Berglund, P ;

Betev, L ;

Bird, IG ;

Birsa, R ;

Björkholm, P ;

de Botton, N ;

Boutemeur, M ;

Bradamante, F ;

Bravar, A ;

Bressan, A ;

Bültmann, S ;

Burtin, E ;

Cavata, C ;

Crabb, D ;

Cranshaw, J ;

Cuhadar, T ;

Dalla Torre, S ;

van Dantzig, R ;

Derro, B ;

Deshpande, A ;

Dhawan, S ;

Dulya, C ;

Dyring, A ;

Eichblatt, S ;

Faivre, JC ;

Fasching, D ;

Feinstein, F ;

Fernandez, C ;

Forthmann, S ;

Frois, B ;

Gallas, A ;

Garzon, JA ;

Gilly, H ;

Giorgi, M ;

von Goeler, E ;

Goertz, S ;

Golutvin, IA ;

Gracia, G ;

de Groot, N ;

Perdekamp, MG ;

Haft, K ;

von Harrach, D ;

Hasegawa, T .

PHYSICAL REVIEW D, 1998, 58 (11)

[8] ABSENCE OF HIGHER-ORDER CORRECTIONS IN ANOMALOUS AXIAL-VECTOR DIVERGENCE EQUATION [J].

ADLER, SL ;

BARDEEN, WA .

PHYSICAL REVIEW, 1969, 182 (05) :1517-&

[9] Measurement of the proton spin structure function g1p with a pure hydrogen target [J].

Airapetian, A ;

Akopov, N ;

Akushevich, I ;

Amarian, M ;

Aschenauer, EC ;

Avakian, H ;

Avakian, R ;

Avetissian, A ;

Bains, B ;

Baumgarten, C ;

Beckmann, M ;

Belostotski, S ;

Belz, E ;

Benisch, T ;

Bernreuther, S ;

Bianchi, N ;

Blouw, J ;

Böttcher, H ;

Borissov, A ;

Brack, J ;

Brauksiepe, S ;

Braun, B ;

Brons, S ;

Brückner, W ;

Brüll, A ;

Bulten, HJ ;

Capitani, GP ;

Carter, P ;

Chumney, P ;

Cisbani, E ;

Court, GR ;

Dalpiaz, PF ;

De Leo, R ;

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 ;

Fick, D ;

Fiedler, K ;

Filippone, BW ;

Fischer, H ;

Fox, B .

PHYSICS LETTERS B, 1998, 442 (1-4) :484-492

[10]

Altarelli G, 1998, ACTA PHYS POL B, V29, P1145

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