### Abstract

The decay B̄ → X_{s}γ is studied at next to leading order in QCD in a class of models containing at least two Higgs doublets and with only one charged Higgs boson nondecoupled at low energy. The two-loop matching condition is calculated and it is found to agree with existing results. The complete dependence of the Wilson coefficients on the matching scale is given. The size of the next to leading order corrections is extensively discussed. Results for branching ratios, possible CP asymmetries, and lower bounds on the charged Higgs boson mass are presented when the convergence of the perturbative series appears fast enough to yield reliable predictions. Regions in the parameter space of these models where the next to leading order calculation is still not a good approximation of the final result for these observables are singled out.

Original language | English |
---|---|

Journal | Physical Review D - Particles, Fields, Gravitation and Cosmology |

Volume | 58 |

Issue number | 7 |

Publication status | Published - 1998 Oct 1 |

Externally published | Yes |

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### ASJC Scopus subject areas

- Nuclear and High Energy Physics
- Physics and Astronomy (miscellaneous)

### Cite this

**Two Higgs doublet model predictions for B̄ → X _{s}γ in NLO QCD.** / Borzumati, Francesca; Greub, Christoph.

Research output: Contribution to journal › Article

_{s}γ in NLO QCD',

*Physical Review D - Particles, Fields, Gravitation and Cosmology*, vol. 58, no. 7.

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TY - JOUR

T1 - Two Higgs doublet model predictions for B̄ → Xsγ in NLO QCD

AU - Borzumati, Francesca

AU - Greub, Christoph

PY - 1998/10/1

Y1 - 1998/10/1

N2 - The decay B̄ → Xsγ is studied at next to leading order in QCD in a class of models containing at least two Higgs doublets and with only one charged Higgs boson nondecoupled at low energy. The two-loop matching condition is calculated and it is found to agree with existing results. The complete dependence of the Wilson coefficients on the matching scale is given. The size of the next to leading order corrections is extensively discussed. Results for branching ratios, possible CP asymmetries, and lower bounds on the charged Higgs boson mass are presented when the convergence of the perturbative series appears fast enough to yield reliable predictions. Regions in the parameter space of these models where the next to leading order calculation is still not a good approximation of the final result for these observables are singled out.

AB - The decay B̄ → Xsγ is studied at next to leading order in QCD in a class of models containing at least two Higgs doublets and with only one charged Higgs boson nondecoupled at low energy. The two-loop matching condition is calculated and it is found to agree with existing results. The complete dependence of the Wilson coefficients on the matching scale is given. The size of the next to leading order corrections is extensively discussed. Results for branching ratios, possible CP asymmetries, and lower bounds on the charged Higgs boson mass are presented when the convergence of the perturbative series appears fast enough to yield reliable predictions. Regions in the parameter space of these models where the next to leading order calculation is still not a good approximation of the final result for these observables are singled out.

UR - http://www.scopus.com/inward/record.url?scp=0542442172&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0542442172&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0542442172

VL - 58

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 7

ER -