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Weak radiative B decays

Mikolaj Misiak

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The theory of the decays bar BXsγ and bar BXsl+l- is reviewed. The huge enhancement of the BXsγ branching ratio by quantum chromodynamics logarithms is attributed to the renormalization group evolution of mb(µ) in the top-quark contribution to the decay amplitude. The residual µ dependence of the NLO predictions is discussed.


PACS

13.20.He Decays of bottom mesons

14.40.Nd Bottom mesons

14.65.Fy Bottom quarks

12.38.-t Quantum chromodynamics

13.40.Hq Electromagnetic decays

11.10.Hi Renormalization group evolution of parameters

Subjects

Particle physics and field theory

Dates

Issue 6 (June 2001)

Received 18 January 2001



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