B{sub (s)}{yields}S transitions in the light cone sum rules with the chiral current

Journal Article · Sat Jan 15 00:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.025024· OSTI ID:21503996

Yanjun, Sun ^[1]; Zuohong, Li ^[2]; Tao, Huang ^[3]

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1. Department of Modern Physics, University of Science and Technology of China, Hefei 230026 (China)
2. Department of Physics, Yantai University, Yantai 264005 (China)
3. Institute of High Energy Physics and Theoretical Physics Enter for Science Facilities, Chinese Academy of Sciences, Beijing 100049 (China)

We make a QCD light-cone sum rule assessment of B{sub (s)} semileptonic decays to a light scalar meson, B{sub (s)}{yields}Sl{nu}{sub l}, Sll(l=e,{mu},{tau}). Chiral current correlators are used and calculations are performed at leading order in {alpha}{sub s}. Having little knowledge of the ingredients of the scalar mesons, we confine ourself to the two-quark picture for them and work with the two possible scenarios. The resulting sum rules for the form factors receive no contributions from the twist-3 distribution amplitudes, in comparison with the calculation of the conventional light-cone sum rule approach where the twist-3 parts usually play an important role. We specify the range of the squared momentum transfer q{sup 2}, in which the operator product expansion for the correlators remains valid approximately. It is found that the form factors satisfy a relation consistent with the prediction of soft collinear effective theory. In the effective range we investigate behaviors of the form factors and differential decay widths and compare our calculations with the observations from other approaches.

• OSTI ID: 21503996
• Journal Information: Physical Review. D, Particles Fields, Vol. 83, Issue 2; Other Information: DOI: 10.1103/PhysRevD.83.025024; (c) 2011 American Institute of Physics; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
B S MESONS
CHARGES
CHIRALITY
COMPARATIVE EVALUATIONS
COMPUTERIZED SIMULATION
FORECASTING
FORM FACTORS
LIGHT CONE
MOMENTUM TRANSFER
OPERATOR PRODUCT EXPANSION
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARKS
SCALAR MESONS
SEMILEPTONIC DECAY
SUM RULES
BEAUTY MESONS
BEAUTY PARTICLES
BOSONS
DECAY
DIMENSIONLESS NUMBERS
ELEMENTARY PARTICLES
EQUATIONS
EVALUATION
FERMIONS
FIELD THEORIES
HADRONS
MESONS
PARTICLE DECAY
PARTICLE PROPERTIES
PSEUDOSCALAR MESONS
SERIES EXPANSION
SIMULATION
SPACE-TIME
STRANGE MESONS
STRANGE PARTICLES
WEAK PARTICLE DECAY