COUPLINGS OF PIONS WITH HEAVY BARYONS FROM LIGHT-CONE QCD SUM-RULES IN THE LEADING ORDER OF HQET

Authors
ZHU SL DAI YB
Citation
Sl. Zhu et Yb. Dai, COUPLINGS OF PIONS WITH HEAVY BARYONS FROM LIGHT-CONE QCD SUM-RULES IN THE LEADING ORDER OF HQET, Physics letters. Section B, 429(1-2), 1998, pp. 72-78
Citations number
29
Categorie Soggetti
Physics
Journal title
Physics letters. Section B → ACNP
ISSN journal
03702693
Volume
429
Issue
1-2
Year of publication
1998
Pages
72 - 78
Database
ISI
SICI code
0370-2693(1998)429:1-2<72:COPWHB>2.0.ZU;2-M
Abstract
The couplings of pions with heavy baryons g(2)(Sigma,Sigma) and g(3)( Sigma,Lambda) are studied with light-cone QCD sum rules in the leadin g order of heavy quark effective theory. Both sum rules are stable. Ou r results are g(2)= 1.56+/-0.3 +/-0.3, g(3) = 0.94 +/- 0.06 +/- 0.2. ( C) 1998 Elsevier Science B.V. All rights reserved.