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

Journal Article · Fri Jan 01 00:00:00 EST 2010 · Physical Review. D, Particles Fields

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

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

---

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, Vol. 81, Issue 1; Other Information: DOI: 10.1103/PhysRevD.81.014012; (c) 2010 The American Physical Society; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

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