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Exclusive radiative and electroweak \(b\to d\) and \(b\to s\) penguin decays at NLO

  • M. Beneke
  • Th FeldmannEmail author
  • D. Seidel
theoretical physics

Abstract.

We provide standard model expectations for the rare radiative decays \(B\to K^*\gamma\), \(B\to \rho\gamma\) and \(B\to\omega\gamma\), and the electroweak penguin decays \(B\to K^*\ell^ + \ell^-\) and \(B\to\rho \ell^ + \ell^-\) at the next-to-leading order (NLO), extending our previous results to \(b\to d\) transitions. We consider branching fractions, isospin asymmetries and direct CP asymmetries. For the electroweak penguin decays, the lepton-invariant mass spectrum and forward-backward asymmetry is also included. Radiative and electroweak penguin transitions in \(b\to d\) are mainly interesting in the search for new flavor-changing neutral current interactions, but in addition the \(B\to \rho\gamma\) decays provide constraints on the CKM parameters \((\bar\rho,\bar\eta)\). The potential impact of these constraints is discussed.

Keywords

Mass Spectrum Field Theory Elementary Particle Quantum Field Theory Particle Acceleration 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin/Heidelberg 2005

Authors and Affiliations

  1. 1.Institut für Theoretische Physik ERWTH AachenAachenGermany
  2. 2.Theoretische Physik 1, Fachbereich PhysikUniversität SiegenSiegenGermany

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