Abstract
We discuss two dedicated observables in exclusive B → K*ℓ+ℓ- decay that can be used to study effects of physics beyond the standard model, namely the forward-backward asymmetry in the lepton spectrum and the isospin-asymmetry between decays of charged and neutral B mesons. We consider the region of large recoil-energy (i.e. small invariant mass of the lepton pair), and employ the QCD factorization approach to exclusive B meson decays. Sub-leading effects in the heavy quark mass expansion are taken into account for the calculation of the isospin-asymmetry. We give predictions for decay asymmetries in the standard model, and its supersymmetric extension with minimal flavor violation, using parameter values allowed by current experimental constraints on B →X sγ decay. © SISSA/ISAS 2003.
| Original language | English |
|---|---|
| Pages (from-to) | 1607-1629 |
| Journal | Journal of High Energy Physics |
| Volume | 7 |
| Issue number | 1 |
| Publication status | Published - 1 Jan 2003 |
Keywords
- B-Physics
- NLO Computations
- Rare Decays
Fingerprint Dive into the research topics of 'Forward-backward and isospin asymmetry for B → K *ℓ<sup>+</sup>ℓ<sup>-</sup> decay in the standard model and in supersymmetry'. Together they form a unique fingerprint.
Cite this
Feldmann, T., & Matias, J. (2003). Forward-backward and isospin asymmetry for B → K *ℓ+ℓ- decay in the standard model and in supersymmetry. Journal of High Energy Physics, 7(1), 1607-1629.