EXCLUSIVE SEMILEPTONIC DECAYS OF BOTTOM BARYONS

被引：22

作者：

HUSSAIN, F ^{[1
]}

KORNER, JG ^{[1
]}

MIGNERON, R ^{[1
]}

机构：

[1] UNIV WESTERN ONTARIO,DEPT APPL MATH,LONDON N6A 5B9,ONTARIO,CANADA

来源：

PHYSICS LETTERS B | 1990年 / 248卷 / 3-4期

关键词：

D O I：

10.1016/0370-2693(90)90313-U

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We calculate the exclusive semi-leptonic bottom baryon decays Λb→Λc+ℓ-+vℓ, Σb → Σc+ℓ-+vℓ and Σb→Σc*+ℓ-+vℓ in the spectator quark model. The helicity structure of the baryonic current transitions Λb→Λc, Σb→Σc(Σc*) is matched to the helicity structure of the free quark current transitions b → c at minimum momentum transfer q2 = 0. The results are continued to q2≠0 by pole dominated form factors. We obtain semi-leptonic baryonic decay rates which are close to the corresponding semi-leptonic mesonic decay rates. © 1990.

引用

页码：406 / 416

页数：11

共 22 条

[1] NON-LEPTONIC WEAK DECAYS OF BOTTOM MESONS [J].

ALI, A ;

KORNER, JG ;

KRAMER, G ;

WILLRODT, J .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1979, 1 (03) :269-277

[2] PROBLEM OF CHARMED BARYON PRODUCTION-RATE BY NEUTRINO [J].

AMER, A ;

GAVELA, MB ;

LEYAOUANC, A ;

OLIVER, L .

PHYSICS LETTERS B, 1979, 81 (01) :48-52

[3] EVIDENCE FOR A NEW PARTICLE WITH NAKED BEAUTY AND FOR ITS ASSOCIATED PRODUCTION IN HIGH-ENERGY (PP) INTERACTIONS [J].

BASILE, M ;

BONVICINI, G ;

ROMEO, GC ;

CIFARELLI, L ;

CONTIN, A ;

DALI, G ;

DICESARE, P ;

ESPOSITO, B ;

GIUSTI, P ;

MASSAM, T ;

NANIA, R ;

PALMONARI, F ;

SARTORELLI, G ;

VALENTI, G ;

ZICHICHI, A .

LETTERE AL NUOVO CIMENTO, 1981, 31 (04) :97-111

[4]

BRODSKY SJ, 1980, PHYS REV D, V22, P2157

[5]

DELBOURGO R, 1965, P ROY SOC A, V278, P146

[6] SEMI-LEPTONIC DECAYS OF CHARMED PARTICLES [J].

GAVELA, MB .

PHYSICS LETTERS B, 1979, 83 (3-4) :367-370

[7] MESONS IN A RELATIVIZED QUARK-MODEL WITH CHROMODYNAMICS [J].

GODFREY, S ;

ISGUR, N .

PHYSICAL REVIEW D, 1985, 32 (01) :189-231

[8] CHARMED BARYON LIFETIME DIFFERENCES [J].

GUBERINA, B ;

RUCKL, R ;

TRAMPETIC, J .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1986, 33 (02) :297-305

[9] ELECTROMAGNETIC PROPERTIES OF HADRONS IN A COVARIANT QUARK MODEL [J].

GUDEHUS, T .

PHYSICAL REVIEW, 1969, 184 (05) :1788-&

[10]

HUSSAIN F, MZTH9005 MAINZ PREPR

← 1 2 3 →