QCD corrections to b → sγγ and exclusive Bs → sγγ decay

Chia Hung V. Chang; Guey Lin Lin; York Peng Yao

doi:10.1016/S0370-2693(97)01208-2

QCD corrections to b → sγγ and exclusive B_s → sγγ decay

Chia Hung V. Chang^*, Guey Lin Lin, York Peng Yao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

53 Citations (Scopus)

Abstract

The short distance QCD corrections to b → sγγ are calculated in the leading logarithmic approximation. The equivalence of operator basis reduction for S-matrix elements by using the equations of motion or by proving a low energy theorem is discussed. We apply the above results to the exclusive B_s → γγ decay. The branching ratio of this decay is found to be 5 × 10^-7 in the Standard Model. We also found that QCD corrections modify considerably the ratio between CP-even and CP-odd two-photon amplitudes.

Original language	English
Pages (from-to)	395-401
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	415
Issue number	4
DOIs	https://doi.org/10.1016/S0370-2693(97)01208-2
Publication status	Published - 1997 Dec 25
Externally published	Yes

ASJC Scopus subject areas

Nuclear and High Energy Physics

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10.1016/S0370-2693(97)01208-2

Cite this

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title = "QCD corrections to b → sγγ and exclusive Bs → sγγ decay",

abstract = "The short distance QCD corrections to b → sγγ are calculated in the leading logarithmic approximation. The equivalence of operator basis reduction for S-matrix elements by using the equations of motion or by proving a low energy theorem is discussed. We apply the above results to the exclusive Bs → γγ decay. The branching ratio of this decay is found to be 5 × 10-7 in the Standard Model. We also found that QCD corrections modify considerably the ratio between CP-even and CP-odd two-photon amplitudes.",

author = "Chang, {Chia Hung V.} and Lin, {Guey Lin} and Yao, {York Peng}",

note = "Funding Information: We thank R. Akhoury for a discussion, and L. Reina for pointing out a sign error and a misprint in the earlier version of the manuscript. GLL also likes to thank particle theory group at U. of Michigan for their hospitality, where part of this work is done. The works of CHC and GLL are supported in part by National Science Council of R.O.C. under grant numbers NSC 86-2112-M-007-020 and NSC 86-2112-M-009-012; YPY's work is partially supported by the U. S. Department of Energy. ",

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doi = "10.1016/S0370-2693(97)01208-2",

language = "English",

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T1 - QCD corrections to b → sγγ and exclusive Bs → sγγ decay

AU - Chang, Chia Hung V.

AU - Lin, Guey Lin

AU - Yao, York Peng

N1 - Funding Information: We thank R. Akhoury for a discussion, and L. Reina for pointing out a sign error and a misprint in the earlier version of the manuscript. GLL also likes to thank particle theory group at U. of Michigan for their hospitality, where part of this work is done. The works of CHC and GLL are supported in part by National Science Council of R.O.C. under grant numbers NSC 86-2112-M-007-020 and NSC 86-2112-M-009-012; YPY's work is partially supported by the U. S. Department of Energy.

PY - 1997/12/25

Y1 - 1997/12/25

N2 - The short distance QCD corrections to b → sγγ are calculated in the leading logarithmic approximation. The equivalence of operator basis reduction for S-matrix elements by using the equations of motion or by proving a low energy theorem is discussed. We apply the above results to the exclusive Bs → γγ decay. The branching ratio of this decay is found to be 5 × 10-7 in the Standard Model. We also found that QCD corrections modify considerably the ratio between CP-even and CP-odd two-photon amplitudes.

AB - The short distance QCD corrections to b → sγγ are calculated in the leading logarithmic approximation. The equivalence of operator basis reduction for S-matrix elements by using the equations of motion or by proving a low energy theorem is discussed. We apply the above results to the exclusive Bs → γγ decay. The branching ratio of this decay is found to be 5 × 10-7 in the Standard Model. We also found that QCD corrections modify considerably the ratio between CP-even and CP-odd two-photon amplitudes.

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DO - 10.1016/S0370-2693(97)01208-2

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JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

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ER -

QCD corrections to b → sγγ and exclusive B_s → sγγ decay

Abstract

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