Deacy of quark-antiquark mesons in NRQCD formalism

Journal Article · Thu Aug 05 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3483341· OSTI ID:21426402

Rai, Ajay Kumar ^[1]; Vinodkumar, P C ^[2]

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1. Applied Physics Department, Sardar Vallabhbhai National Istitute Of Technology-Surat, Gujarat-395 007 (India)
2. Department of Physics, Sardar Patel University, Vallabh Vidayanagar Anand, Gujarat388 112 (India)

We investigate the decay properties of the quark-antiquark cc-bar system using NRQCD formalism. The basic parameters for the decay of the cc-bar states are obtained from phenomenological potential scheme of the type V(r) = -({alpha}{sub c}/r)+Ar{sup {nu}}, with {nu} varying from 0.5 to 2, which is employed to fit the low lying spectra. The resultant wave function and mass parameters are employed to determine the decay constants f{sub P/V} with and without QCD corrections. By incorporating the relativistic corrections of order {nu}{sup 4} to the heavy quarkonium decays into two photons, and the vector state into lepton pairs are computed within the NRQCD formalism. These decay widths are also investigated by incorporating radiative corrections up to the lowest order to the conventional Van Royen- Weisskopf formula. Our theoretical predictions of the decays of the cc-bar meson for the potential index around 0.7 are comparable with other model predictions and with the experimental values.

• OSTI ID: 21426402
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1257; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOSONS
C QUARKS
CHARM PARTICLES
CHARMED MESONS
CHARMONIUM
COMPOSITE MODELS
CORRECTIONS
DECAY
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
FIELD THEORIES
FUNCTIONS
HADRONS
INTERACTIONS
LEPTONS
MASS
MASSLESS PARTICLES
MATHEMATICAL MODELS
MESONS
PARTICLE DECAY
PARTICLE INTERACTIONS
PARTICLE MODELS
PHOTONS
POTENTIALS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
QUARK-ANTIQUARK INTERACTIONS
QUARKONIUM
QUARKS
RADIATIVE CORRECTIONS
RELATIVISTIC RANGE
REST MASS
WAVE FUNCTIONS