Decay {eta}{sub b{yields}}J/{psi}J/{psi} in light cone formalism

Journal Article · Thu Dec 31 23:00:00 EST 2009 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.81.014012· OSTI ID:21408961

Braguta, V V ^[1]; Kartvelishvili, V ^[2]

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1. Institute for High Energy Physics, Protvino (Russian Federation)
2. Lancaster University, Lancaster, LA1 4YB (United Kingdom)

The decays of pseudoscalar bottomonium {eta}{sub b} into a pair of vector charmonia, J/{psi}J/{psi}, J/{psi}{psi}{sup '}, {psi}{sup '{psi}'}, are considered in the light cone formalism. Relativistic and leading logarithmic radiative corrections to the amplitudes of these processes are resummed. It is shown that the small value for the branching ratio of the decay {eta}{sub b{yields}}J/{psi}J/{psi} obtained within the leading-order nonrelativistic QCD is a consequence of a fine-tuning between certain parameters, which is broken when relativistic and leading logarithmic radiative corrections are taken into account. As a result, the branching ratio obtained in this paper is enhanced by an order of magnitude.

• OSTI ID: 21408961
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 1 Vol. 81; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BOSONS
BOTTOMONIUM
BRANCHING RATIO
CORRECTIONS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
ENERGY RANGE
FIELD THEORIES
HADRONS
LIGHT CONE
MESONS
PARTICLE DECAY
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKONIUM
RADIATIVE CORRECTIONS
RELATIVISTIC RANGE
SPACE-TIME