Inclusive BXs+ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} : complete angular analysis and a thorough study of collinear photons

Mar 16, 2015
60 pages
Published in:
  • JHEP 06 (2015) 176
  • Published: Jun 25, 2015
e-Print:
Report number:
  • QFET-2015-13,
  • SI-HEP-2015-12,
  • MITP-15-001,
  • IU-HET-593

Citations per year

20112014201720202023051015
Abstract: (Springer)
We investigate logarithmically enhanced electromagnetic corrections of all angular observables in inclusive BXs+ \overline{B}\to {X}_s{\ell}^{+}{\ell}^{-} . We present analytical results, which are supplemented by a dedicated Monte Carlo study on the treatment of collinear photons in order to determine the size of the electromagnetic logarithms. We then give the Standard Model predictions of all observables, considering all available NNLO QCD, NLO QED and power corrections, and investigate their sensitivity to New Physics. Since the structure of the double differential decay rate is modified in the presence of QED corrections, we also propose new observables which vanish if only QCD corrections are taken into account. Moreover, we study the experimental sensitivity to these new observables at Belle II.
Note:
  • 60 pages, 13 figures, 4 tables. v2: Minor modifications, matches published version
  • Rare Decays
  • B-Physics
  • Beyond Standard Model
  • new physics
  • anti-B: rare decay
  • anti-B: semileptonic decay
  • anti-B: branching ratio
  • decay: flavor changing
  • decay: inclusive reaction
  • quantum electrodynamics: correction