Published December 22, 2010
| Version v1
Journal article
Inclusive electromagnetic decay ratios of heavy quarkonium from QCD
Creators
- 1. Grup de Fisica Teorica, Universitat Autonoma de Barcelona, E-08193, Barcelona (Spain)
Description
We consider a different power counting in potential NRQCD by incorporating the static potential exactly in the leading order Hamiltonian. We compute the leading relativistic corrections to the inclusive electromagnetic decay ratios in this new scheme. The effect of this new power counting is found to be large (even for top). We produce an updated value for the ηb decay to two photons. This scheme also brings consistency between the weak coupling computation and the experimental value of the charmonium decay ratio.
Additional details
Identifiers
- DOI
- 10.1063/1.3536563;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1317
- Journal Issue
- 1
- Journal Page Range
- p. 225-232
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- Theory and experiment - Beppe Nardulli memorial workshop
- Acronym
- International workshop on quantum chromodynamics
- Dates
- 20-23 Jun 2010
- Place
- Martina Franca (Italy)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42101674
- Subject category
- S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CALCULATION METHODS; CHARMONIUM; COMPUTERIZED SIMULATION; CORRECTIONS; COUPLING; HAMILTONIANS; HYPERFINE STRUCTURE; PARTICLE DECAY; PHOTONS; QUANTUM CHROMODYNAMICS; QUARKS; RELATIVISTIC RANGE; WEAK-COUPLING MODEL
- Descriptors DEC
- BOSONS; DECAY; ELEMENTARY PARTICLES; ENERGY RANGE; FERMIONS; FIELD THEORIES; HADRONS; MASSLESS PARTICLES; MATHEMATICAL MODELS; MATHEMATICAL OPERATORS; MESONS; NUCLEAR MODELS; QUANTUM FIELD THEORY; QUANTUM OPERATORS; QUARKONIUM; SIMULATION
Optional Information
- Notes
- (c) 2010 American Institute of Physics