Published January 24, 2008
| Version v1
Journal article
ρD*D* vertex from QCD sum rules
- 1. Instituto de Fisica, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-900 Rio de Janeiro, RJ (Brazil)
- 2. Instituto de Fisica, Universidade de Sao Paulo, C.P. 66318, 05389-970 Sao Paulo, SP (Brazil)
Description
We calculate the form factors and the coupling constant in the ρD*D* vertex in the framework of QCD sum rules. We evaluate the three point correlation functions of the vertex considering both ρ and D* mesons off-shell. The form factors obtained are very different but give the same coupling constant: gρD*D*=6.60±0.31. This number is 50% larger than what we would expect from SU(4) estimates
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2007.11.066Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2007.11.066;
- arXiv
- arXiv:0710.1878v1;
- PII
- S0370-2693(07)01467-0;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 659
- Journal Issue
- 3
- Journal Page Range
- p. 559-564
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39080800
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CORRELATION FUNCTIONS; COUPLING CONSTANTS; D*-2010 MESONS; FORM FACTORS; QUANTUM CHROMODYNAMICS; RHO-770 MESONS; SU-4 GROUPS; SUM RULES
- Descriptors DEC
- BOSONS; CHARM PARTICLES; CHARMED MESONS; DIMENSIONLESS NUMBERS; ELEMENTARY PARTICLES; EQUATIONS; FIELD THEORIES; FUNCTIONS; HADRONS; LIE GROUPS; MESONS; PARTICLE PROPERTIES; QUANTUM FIELD THEORY; SU GROUPS; SYMMETRY GROUPS; VECTOR MESONS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.