HYPERFINE MASS SPLITTINGS OF BARYONS CONTAINING A HEAVY-QUARK IN LARGE N-QCD

被引：55

作者：

JENKINS, E

机构：

[1] Department of Physics, University of California at San Diego, La Jolla, CA 92093

来源：

PHYSICS LETTERS B | 1993年 / 315卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(93)91639-5

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The hyperfine mass splittings of baryons containing a heavy quark are derived at leading order in large N QCD. Hyperfine splittings either preserve or violate heavy quark spin symmetry. Previous work proves that the splittings which preserve heavy quark spin symmetry are proportional to J2 at order 1/N, where J is the angular momentum of the light degrees of freedom of the baryon. This work proves that the splittings which violate heavy quark spin symmetry are.proportional to J-S(Q) at order 1/Nm(Q) in the 1/N and 1/m(Q) expansions.

引用

页码：447 / 451

页数：5

共 7 条

[1] 1/NC CORRECTIONS TO THE BARYON AXIAL CURRENTS IN QCD
DASHEN, R
MANOHAR, AV
[J]. PHYSICS LETTERS B, 1993, 315 (3-4) : 438 - 440
[2] BARYON-PION COUPLINGS FROM LARGE-NC QCD
DASHEN, R
MANOHAR, AV
[J]. PHYSICS LETTERS B, 1993, 315 (3-4) : 425 - 430
[3] WEAK DECAYS OF HEAVY MESONS IN THE STATIC QUARK APPROXIMATION
ISGUR, N
WISE, MB
[J]. PHYSICS LETTERS B, 1989, 232 (01) : 113 - 117
[4] WEAK TRANSITION FORM-FACTORS BETWEEN HEAVY MESONS
ISGUR, N
WISE, MB
[J]. PHYSICS LETTERS B, 1990, 237 (3-4) : 527 - 530
[5] BARYON HYPERFINE MASS SPLITTINGS IN LARGE N-QCD
JENKINS, E
[J]. PHYSICS LETTERS B, 1993, 315 (3-4) : 441 - 446
[6] HYPERFINE SPLITTINGS OF BARYONS CONTAINING A HEAVY QUARK IN THE SKYRME MODEL
JENKINS, E
MANOHAR, AV
[J]. PHYSICS LETTERS B, 1992, 294 (02) : 273 - 280
[7] LIGHT-QUARK SPIN FLAVOR SYMMETRY FOR BARYONS CONTAINING A HEAVY-QUARK IN LARGE N-QCD
JENKINS, E
[J]. PHYSICS LETTERS B, 1993, 315 (3-4) : 431 - 437

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