Hyperfine mixing in b → c semileptonic decay of doubly heavy baryons

被引：35

作者：

Albertus, C. ^{[3
]}

Hernandez, E. ^{[1
,2
]}

Nieves, J. ^{[3
]}

机构：

[1] Univ Salamanca, Dept Fis Fundamental, E-37008 Salamanca, Spain

[2] Univ Salamanca, IUFFyM, E-37008 Salamanca, Spain

[3] Univ Valencia, Inst Fis Corpuscular IFIC, Ctr Mixto CSIC, Inst Invest Paterna, E-46071 Valencia, Spain

来源：

PHYSICS LETTERS B | 2010年 / 683卷 / 01期

关键词：

QUARK-MODEL; STATIC PROPERTIES; SYMMETRY;

D O I：

10.1016/j.physletb.2009.11.048

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We qualitatively corroborate the results of [W. Roberts, M. Pervin, Int. J. Mod. Phys. A 24 (2009) 2401] according to which hyperfine mixing greatly affects the decay widths of b -> c semileptonic decays involving doubly heavy bc baryons. However, our predictions for the decay widths of the unmixed states differ from those reported in the work of Roberts and Pervin by a factor of 2, and this discrepancy translates to the mixed case. We further show that the predictions of heavy quark spin symmetry, might be used in the future to experimentally extract information on the admixtures in the actual physical bc baryons, in a model independent manner. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：21 / 25

页数：5

共 35 条

[1] Static properties and semileptonic decays of doubly heavy baryons in a nonrelativistic quark model (vol 32, pg 183, 2007) [J].

Albertus, C. ;

Hernandez, E. ;

Nieves, J. ;

Verde-Velasco, J. M. .

EUROPEAN PHYSICAL JOURNAL A, 2008, 36 (01) :119-119

[2] Static properties and semileptonic decays of doubly heavy baryons in a nonrelativistic quark model [J].

Albertus, C. ;

Hernandez, E. ;

Nieves, J. ;

Verde-Velasco, J. M. .

EUROPEAN PHYSICAL JOURNAL A, 2007, 32 (02) :183-199

[3] Charmed and bottom baryons:: a variational approach based on heavy quark symmetry [J].

Albertus, C ;

Amaro, JE ;

Hernández, E ;

Nieves, J .

NUCLEAR PHYSICS A, 2004, 740 (3-4) :333-361

[4] A UNIFIED POTENTIAL FOR MESONS AND BARYONS [J].

BHADURI, RK ;

COHLER, LE ;

NOGAMI, Y .

NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA A-NUCLEI PARTICLES AND FIELDS, 1981, 65 (03) :376-390

[5]

Ebert D, 2002, PHYS REV D, V66, DOI 10.1103/PhysRevD.66.014008

[6] Semileptonic decays of doubly heavy baryons in the relativistic quark model [J].

Ebert, D ;

Faustov, RN ;

Galkin, VO ;

Martynenko, AP .

PHYSICAL REVIEW D, 2004, 70 (01) :014018-1

[7] Heavy baryons in the relativistic quark model [J].

Ebert, D ;

Faustov, RN ;

Galkin, VO ;

Martynenko, AP ;

Saleev, VA .

ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS, 1997, 76 (01) :111-115

[8] Semileptonic decays of doubly heavy baryons in the relativistic quark model (vol 70, art 014018, 2004) [J].

Ebert, D. ;

Faustov, R. N. ;

Galkin, V. O. ;

Martynenko, A. P. .

PHYSICAL REVIEW D, 2008, 77 (07)

[9] Semileptonic decays of double heavy baryons [J].

Faessler, A ;

Gutsche, T ;

Ivanov, MA ;

Körner, JG ;

Lyubovitskij, VE .

PHYSICS LETTERS B, 2001, 518 (1-2) :55-62

[10] Semileptonic decays of double heavy baryons in a relativistic constituent three-quark model [J].

Faessler, Amand ;

Gutsche, Thomas ;

Ivanov, Mikhail A. ;

Koerner, Juergen G. ;

Lyubovitskij, Valery E. .

PHYSICAL REVIEW D, 2009, 80 (03)

← 1 2 3 4 →