ANOMALOUS GLUON CONTENT OF THE PROTON

被引：68

作者：

HATSUDA, T

机构：

[1] Department of Physics, State University of New York at Stony Brook, Stony Brook

来源：

NUCLEAR PHYSICS B | 1990年 / 329卷 / 02期

关键词：

D O I：

10.1016/0550-3213(90)90148-7

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：

The proton matrix element of the flavor singlet axial current is evaluated using the large Nc chiral dynamics satisfying the anomalous Ward-Takahashi identities. We relate the quark and gluon contributions (Δq and Δg) of the matrix element to the nucleon-meson (η, η′, π0) pseudo-scalar coupling constants. It is shown that the weak η′-nucleon coupling is preferred to reproduce the recent EMC data. The origin of the anomalous value of Δg pointed out by Cheng and Li is clarified in the context of the large isospin violation due to the anomaly. A subtlety related to the matrix element of the gauge-variant topological current Kμ is also discussed. © 1990.

引用

页码：376 / 386

页数：11

共 34 条

[1] ETA,ETA' MIXING AND ANOMALIES [J].

AKHOURY, R ;

FRERE, JM .

PHYSICS LETTERS B, 1989, 220 (1-2) :258-264

[2] THE ANOMALOUS GLUON CONTRIBUTION TO POLARIZED LEPTOPRODUCTION [J].

ALTARELLI, G ;

ROSS, GG .

PHYSICS LETTERS B, 1988, 212 (03) :391-396

[3] 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

[4]

BREIN W, 1980, NUCL PHYS A, V338, P332

[5] CHIRAL SYMMETRY AND THE SPIN OF THE PROTON [J].

BRODSKY, SJ ;

ELLIS, J ;

KARLINER, M .

PHYSICS LETTERS B, 1988, 206 (02) :309-315

[6] THE ROLE OF THE AXIAL ANOMALY IN MEASURING SPIN-DEPENDENT PARTON DISTRIBUTIONS [J].

CARLITZ, RD ;

COLLINS, JC ;

MUELLER, AH .

PHYSICS LETTERS B, 1988, 214 (02) :229-236

[7] AXIAL ANOMALY AND THE PROTON SPIN [J].

CHENG, TP ;

LI, LF .

PHYSICAL REVIEW LETTERS, 1989, 62 (13) :1441-1444

[8] SPIN CONTENT OF THE PROTON [J].

CLOSE, FE ;

ROBERTS, RG .

PHYSICAL REVIEW LETTERS, 1988, 60 (15) :1471-1474

[9]

DEVICCIA P, 1980, NUCL PHYS B, V171, P253

[10] THE SPIN OF THE PROTON IN A HYBRID CHIRAL BAG MODEL [J].

DREINER, H ;

ELLIS, J ;

FLORES, RA .

PHYSICS LETTERS B, 1989, 221 (02) :167-172

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