Published January 19, 2009
| Version v1
Journal article
The meson Z+(4430) as a tetraquark state
- 1. Instituto de Fisica, Universidade do Estado do Rio de Janeiro, Rua Sao Francisco Xavier 524, 20550-900 Rio de Janeiro, RJ (Brazil)
- 2. Institute of Physics and Applied Physics, Yonsei University, Seoul 120-749 (Korea, Republic of)
- 3. Instituto de Fisica, Universidade de Sao Paulo, C.P. 66318, 05389-970 Sao Paulo, SP (Brazil)
- 4. Unidade Academica de Fisica, Universidade Federal de Campina Grande, 58.109-900 Campina Grande, PB (Brazil)
Description
We test the validity of the QCD sum rules applied to the meson Z+(4430), by considering a diquark-antidiquark type of current with JP=0- and with JP=1-. We find that, with the studied currents, it is possible to find an acceptable Borel window. In such a Borel window we have simultaneously a good OPE convergence and a pole contribution which is bigger than the continuum contribution. We get mZ=(4.52±0.09) GeV and mZ=(4.84±0.14) GeV for the currents with JP=0- and JP=1-, respectively. We conclude that the QCD sum rules results favors JP=0- quantum numbers for the Z+(4430) meson
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2008.12.021Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2008.12.021;
- PII
- S0370-2693(08)01500-1;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 671
- Journal Issue
- 2
- Journal Page Range
- p. 240-244
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 40050467
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- CONVERGENCE; GEV RANGE 01-10; MESONS; QUANTUM CHROMODYNAMICS; QUANTUM NUMBERS; SUM RULES
- Descriptors DEC
- BOSONS; ELEMENTARY PARTICLES; ENERGY RANGE; EQUATIONS; FIELD THEORIES; GEV RANGE; HADRONS; QUANTUM FIELD THEORY
Optional Information
- Copyright
- Copyright (c) 2008 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.