NNLO vertex corrections to non-leptonic B decays: Tree amplitudes

Beneke, Μ.; Huber, Tobias; Li, Xin-Qiang

doi:10.1016/j.nuclphysb.2010.02.002

Cited by 113 publications

(189 citation statements)

References 130 publications

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“…At O(α s ) the coefficients a i also acquire perturbative strong phases [3,30,31]. These can be included using the partial QCD factorization formalism discussed in ref.…”

Section: Jhep10(2017)117mentioning

confidence: 99%

CP violation in multibody B decays from QCD factorization

Klein

Mannel

Virto

et al. 2017

J. High Energ. Phys.

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We test a data-driven approach based on QCD factorization for charmless three-body B-decays by confronting it to measurements of CP violation in B − → π − π + π − . While some of the needed non-perturbative objects can be directly extracted from data, some others can, so far, only be modelled. Although this approach is currently model dependent, we comment on the perspectives to reduce this model dependence. While our model naturally accommodates the gross features of the Dalitz distribution, it cannot quantitatively explain the details seen in the current experimental data on local CP asymmetries. We comment on possible refinements of our simple model and conclude by briefly discussing a possible extension of the model to large invariant masses, where large local CP asymmetries have been measured.

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“…At O(α s ) the coefficients a i also acquire perturbative strong phases [3,30,31]. These can be included using the partial QCD factorization formalism discussed in ref.…”

Section: Jhep10(2017)117mentioning

confidence: 99%

CP violation in multibody B decays from QCD factorization

Klein

Mannel

Virto

et al. 2017

J. High Energ. Phys.

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“…The first reports λ B > 669 MeV (591 MeV) (depending on the treatment of priors), while the second, published analysis concludes the significantly weaker limit λ B > 300 MeV. The first result would be rather troublesome for non-leptonic B decay phenomenology, which needs λ B ≈ 200 MeV to achieve a satisfactory description of colorsuppressed decay modes [12][13][14].…”

Section: Introductionmentioning

confidence: 99%

B meson distribution amplitude from B→γℓν

2011

Self Cite

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We reconsider the utility of the radiative decay B → γℓν with an energetic photon in the final state for determining parameters of the B-meson light-cone distribution amplitude. Including 1/m b power corrections and radiative corrections at next-to-leading logarithmic order, we perform an improved analysis of the existing BABAR data. We find a provisional lower limit on the inverse moment of the B meson distribution amplitude, λ B , which, due to the inclusion of radiative and power corrections, is significantly lower than the previous result. More data with large photon energy is, however, required to obtain reliable results, as should become available in the future from SuperB factories.

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“…The second uncertainty from the renormalization scale could, in principle, be reduced by the inclusion of higher order α s corrections to hadronic matrix elements, for example, it has been showed [54,55] that tree amplitudes incorporating with the NNLO vertex corrections are relatively less sensitive to the choice of scale than the NLO amplitudes. The largest uncertainty (the fourth uncertainty), ∼ 40%, comes from the transition form factors, which is expected to be cancelled from the relative ratio of branching ratios, such as,…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

J/ψ → DP, DV decays in the QCD factorization approach

Sun

Chen

Chang

et al. 2015

Int. J. Mod. Phys. A

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Motivated by the recent measurements on nonleptonic J/ψ weak decays at BESIII and the potential prospects of J/ψ meson at the high-luminosity heavy-flavor experiments, the branching ratios of the two-body nonleptonic J/ψ → DP , DV decays are estimated quantitatively by considering the QCD radiative corrections to hadronic matrix elements with the QCD factorization approach. It is found that the Cabibbo favoreddecays have branching ratios > ∼ 10 −10 , which might be promisingly detectable in the near future.

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NNLO vertex corrections to non-leptonic B decays: Tree amplitudes

Cited by 113 publications

References 130 publications

CP violation in multibody B decays from QCD factorization

CP violation in multibody B decays from QCD factorization

B meson distribution amplitude from B→γℓν

J/ψ → DP, DV decays in the QCD factorization approach

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