Model-independent analysis of B→πK decays and bounds on the weak phase γ | Zendy

Matthias Neubert | Zendy

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Model-independent analysis of B→πK decays and bounds on the weak phase γ

Author(s) -

Matthias Neubert

Publication year - 1999

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/1999/02/014

Subject(s) - physics , parametrization (atmospheric modeling) , hamiltonian (control theory) , hadron , amplitude , particle physics , homogeneous space , pi , cp violation , weak interaction , quantum mechanics , mathematics , mathematical optimization , radiative transfer , geometry

A general parametrization of the amplitudes for the rare two-body decays B ->pi K is introduced, which makes maximal use of theoretical constraints arisingfrom flavour symmetries of the strong interactions and the structure of thelow-energy effective weak Hamiltonian. With the help of this parametrization, amodel-independent analysis of the branching ratios and direct CP asymmetries inthe various B -> pi K decay modes is performed, and the impact of hadronicuncertainties on bounds on the weak phase gamma = arg(Vub*) is investigated.Comment: 34 pages, 18 figures, uses JHEP.cls; submitted to JHE

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