Radiative corrections to hard spectator scattering inB→ ππ decays | Zendy

Nikolai Kivel | Zendy

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Radiative corrections to hard spectator scattering inB→ ππ decays

Author(s) -

Nikolai Kivel

Publication year - 2007

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 - 10.1088/1126-6708/2007/05/019

Subject(s) - physics , factorization , radiative transfer , scattering , vertex (graph theory) , scattering amplitude , amplitude , particle physics , term (time) , quantum electrodynamics , quantum mechanics , combinatorics , mathematics , graph , algorithm

We present the calculation of the next-to-leading corrections to the treeamplitudes which appear in the description of non-leptonic B-decays in thefactorization approach. These corrections, together with radiative correctionsto the jet functions, represent the full next-to-leading contributions to thedominant hard spectator scattering term generated by operators $O_{1,2}$ in thedecay amplitudes. Using obtained analytical results we estimate $B\to\pi\pi$branchings fractions in the physical (or BBNS) factorization scheme. We havealso found that the imaginary part generated in the hard spectator scatteringterm is rather large compared to the imaginary part of the vertex contribution.Comment: text is improved and typos are corrected, accepted for publication in JHE

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