Examination of the strangeness contribution to the nucleon magnetic moment

被引：11

作者：

Chen, XS ^{[1
]}

Timmermans, RGE

Sun, WM

Zong, HS

Wang, F

机构：

[1] Sichuan Univ, Dept Phys, Chengdu 610064, Peoples R China

[2] Nanjing Univ, Dept Phys, Nanjing 210093, Peoples R China

[3] Nanjing Univ, Ctr Theoret Phys, Nanjing 210093, Peoples R China

[4] Kernfys Versneller Inst, Theory Grp, NL-9747 AA Groningen, Netherlands

[5] China Ctr Adv Sci & Technol, World Lab, Beijing 100080, Peoples R China

来源：

PHYSICAL REVIEW C | 2004年 / 70卷 / 01期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1103/PhysRevC.70.015201

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：

We examine the nucleon strangeness magnetic moment mu(s) with a lowest order meson cloud model. We observe that (1) strangeness in the nucleon is a natural requirement of the empirical relation mu(p)/mu(n)similar or equal to-3/2, which favors an SU(3) octet meson cloud instead of merely the SU(2) pions. (2) In a consistent perturbative calculation, the quark vertex contribution to mu(s) is divergently positive, the meson cloud contribution to mu(s) is divergently negative, and the sum is convergent and negative. (3) In the rest frame of the nucleon, mu(s) cannot be separated into a quark part and an antiquark part, neither can mu(s) be calculated via the spin and orbital angular momentum of the strange quarks and antiquarks. (4) While the overall sign of mu(s) is under debate, the spin part of mu(s) (which is related to the strange quark tensor charge) is better known to be negative.

引用

页码：015201 / 1

页数：6

共 45 条

[1] Strangeness in the nucleon: neutrino-nucleon and polarized electron-nucleon scattering [J].

Alberico, WM ;

Bilenky, SM ;

Maieron, C .

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, 2002, 358 (04) :227-308

[2] New measurement of parity violation in elastic electron-proton scattering and implications for strange form factors [J].

Aniol, KA ;

Armstrong, DS ;

Averett, T ;

Baylac, M ;

Burtin, E ;

Calarco, J ;

Cates, GD ;

Cavata, C ;

Chai, Z ;

Chang, CC ;

Chen, JP ;

Chudakov, E ;

Cisbani, E ;

Coman, M ;

Dale, D ;

Deur, A ;

Djawotho, P ;

Epstein, MB ;

Escoffier, S ;

Ewell, L ;

Falletto, N ;

Finn, JM ;

Fleck, A ;

Frois, B ;

Frullani, S ;

Gao, J ;

Garibaldi, F ;

Gasparian, A ;

Gerstner, GM ;

Gilman, R ;

Glamazdin, A ;

Gomez, J ;

Gorbenko, V ;

Hansen, O ;

Hersman, F ;

Higinbotham, DW ;

Holmes, R ;

Holtrop, M ;

Humensky, B ;

Incerti, S ;

Iodice, M ;

de Jager, CW ;

Jardillier, J ;

Jiang, X ;

Jones, MK ;

Jorda, J ;

Jutier, C ;

Kahl, W ;

Kelly, JJ ;

Kim, DH .

PHYSICS LETTERS B, 2001, 509 (3-4) :211-216

[3] Measurement of the neutral weak form factors of the proton [J].

Aniol, KA ;

Armstrong, DS ;

Baylac, M ;

Burtin, E ;

Calarco, J ;

Cates, GD ;

Cavata, C ;

Chen, JP ;

Chudakov, E ;

Dale, D ;

de Jager, CW ;

Deur, A ;

Djawotho, P ;

Epstein, MB ;

Escoffier, S ;

Ewell, L ;

Falletto, N ;

Finn, JM ;

Fissum, K ;

Fleck, A ;

Frois, B ;

Gao, J ;

Garibaldi, F ;

Gasparian, A ;

Gerstner, GM ;

Gilman, R ;

Glamazdin, A ;

Gomez, J ;

Gorbenko, V ;

Hansen, O ;

Hersman, F ;

Holmes, R ;

Holtrop, M ;

Humensky, B ;

Incerti, S ;

Jardillier, J ;

Jones, MK ;

Jorda, J ;

Jutier, C ;

Kahl, W ;

Kim, DH ;

Kim, MS ;

Kramer, K ;

Kumar, KS ;

Kuss, M ;

LeRose, J ;

Leuschner, M ;

Lhuillier, D ;

Liyanage, N ;

Lourie, R .

PHYSICAL REVIEW LETTERS, 1999, 82 (06) :1096-1100

[4] Tensor charge of the nucleon in lattice QCD [J].

Aoki, S ;

Doui, M ;

Hatsuda, T ;

Kuramashi, Y .

PHYSICAL REVIEW D, 1997, 56 (01) :433-436

[5] AN INVESTIGATION OF THE SPIN STRUCTURE OF THE PROTON IN DEEP INELASTIC-SCATTERING OF POLARIZED MUONS ON POLARIZED PROTONS [J].

ASHMAN, J ;

BADELEK, B ;

BAUM, G ;

BEAUFAYS, J ;

BEE, CP ;

BENCHOUK, C ;

BIRD, IG ;

BROWN, SC ;

CAPUTO, MC ;

CHEUNG, HWK ;

CHIMA, JS ;

CIBOROWSKI, J ;

CLIFFT, R ;

COIGNET, G ;

COMBLEY, F ;

COURT, G ;

DAGOSTINI, G ;

DREES, J ;

DUREN, M ;

DYCE, N ;

EDWARDS, AW ;

EDWARDS, M ;

ERNST, T ;

FERRERO, MI ;

FRANCIS, D ;

GABATHULER, E ;

GAMET, R ;

GIBSON, V ;

GILLIES, J ;

GRAFSTROM, P ;

HAMACHER, K ;

HARRACH, DV ;

HAYMAN, PJ ;

HOLT, JR ;

HUGHES, VW ;

JACHOLKOWSKA, A ;

JONES, T ;

KABUSS, EM ;

KORZEN, B ;

KRUNER, U ;

KULLANDER, S ;

LANDGRAF, U ;

LANSKE, D ;

LETTENSTROM, F ;

LINDQVIST, T ;

LOKEN, J ;

MATTHEWS, M ;

MIZUNO, Y ;

MONIG, K ;

MONTANET, F .

NUCLEAR PHYSICS B, 1989, 328 (01) :1-35

[6] A MEASUREMENT OF THE SPIN ASYMMETRY AND DETERMINATION OF THE STRUCTURE-FUNCTION G1 IN DEEP INELASTIC MUON PROTON-SCATTERING [J].

ASHMAN, J ;

BADELEK, B ;

BAUM, G ;

BEAUFAYS, J ;

BEE, CP ;

BENCHOUK, C ;

BIRD, IG ;

BROWN, SC ;

CAPUTO, MC ;

CHEUNG, HWK ;

CHIMA, J ;

CIBOROWSKI, J ;

CLIFFT, RW ;

COIGNET, G ;

COMBLEY, F ;

COURT, G ;

DAGOSTINI, G ;

DREES, J ;

DUREN, M ;

DYCE, N ;

EDWARDS, AW ;

EDWARDS, M ;

ERNST, T ;

FERRERO, MI ;

FRANCIS, D ;

GABATHULER, E ;

GAJEWSKI, J ;

GAMET, R ;

GIBSON, V ;

GILLIES, J ;

GRAFSTROM, P ;

HAMACHER, K ;

VONHARRACH, D ;

HAYMAN, P ;

HOLT, JR ;

HUGHES, VW ;

JACHOLKOWSKA, A ;

JONES, T ;

KABUSS, EM ;

KORZEN, B ;

KRUNER, U ;

KULLANDER, S ;

LANDGRAF, U ;

LANSKE, D ;

LETTENSTROM, F ;

LINDQVIST, T ;

LOKEN, J ;

MATTHEWS, M ;

MIZUNO, Y ;

MONIG, K .

PHYSICS LETTERS B, 1988, 206 (02) :364-370

[7] Parity-violating electron scattering and nucleon structure [J].

Beck, DH ;

McKeown, RD .

ANNUAL REVIEW OF NUCLEAR AND PARTICLE SCIENCE, 2001, 51 :189-217

[8] Nucleon structure and parity-violating electron scattering [J].

Beck, DH ;

Holstein, BR .

INTERNATIONAL JOURNAL OF MODERN PHYSICS E, 2001, 10 (01) :1-41

[9]

Buchmann AJ, 1997, Z NATURFORSCH A, V52, P877

[10] Strange quark polarization of the nucleon: A parameter-independent prediction of the chiral potential model [J].

Chen, XB ;

Chen, XS ;

Wang, F .

PHYSICAL REVIEW LETTERS, 2001, 87 (01)

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