# Timelike-helicity B→ππ form factor from light-cone sum rules with dipion distribution amplitudes

@article{Cheng2017TimelikehelicityBF,
title={Timelike-helicity B→$\pi$$\pi form factor from light-cone sum rules with dipion distribution amplitudes}, author={Shan Cheng and Alexander Khodjamirian and Javier Virto}, journal={Physical Review D}, year={2017}, volume={96} } • Published 1 September 2017 • Physics • Physical Review D We complete the set of QCD light-cone sum rules for B\to \pi\pi transition form factors, deriving a new sum rule for the timelike-helicity form factor F_t in terms of dipion distribution amplitudes. This sum rule, in the leading twist-2 approximation, is directly related to the pion vector form factor. Employing a relation between F_t and other B\to \pi\pi form factors we obtain also the longitudinal-helicity form factor F_0. In this way, all four (axial-)vector B\to \pi\pi form… 25 Citations ## Figures from this paper We suggest to update the expansion coefficients of 2\piDAs with the distribution amplitudes of light mesons evaluated from lattice QCD, with which we revisit \overline{B}^0 \to \pi^+\pi^0 • Physics Journal of High Energy Physics • 2019 We derive a set of light-cone sum rules relating the hadronic form factors relevant for B → Kπℓ+ℓ− decays to the B-meson light-cone distribution amplitudes (LCDAs). We obtain the sum rule relations • Physics • 2018 We provide results for the full set of form factors describing semileptonic Bmeson transitions to pseudoscalar mesons π, K, D̄ and vector mesons ρ, K∗, D̄∗. Our results are obtained within the • Physics Journal of High Energy Physics • 2019 A bstractWe provide results for the full set of form factors describing semileptonic B-meson transitions to pseudoscalar mesons π, K, D¯$$ \overline{D} $$and vector mesons ρ, K∗, D¯∗$$ • Physics • 2020 In this paper we calculate the $$\bar{B}_s \rightarrow f_0(980)$$ form factors from light-cone sum rules with B meson DAs. With adopting the quark–antiquark configuration of light scalar mesons, the • Physics Journal of High Energy Physics • 2018 A bstractWe revisit QCD factorization of B → ππ form factors at large dipion masses, by deriving new constraints based on the analyticity properties of these objects. We then propose a • Physics Journal of High Energy Physics • 2020 Exclusive non-leptonic two-body decays of B mesons have been studied extensively in the past two decades within the framework of factorization. However, the exploration of the corresponding • Physics, Geology • 2017 A bstractWe 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 • Physics The European Physical Journal C • 2019 In this work, the decays of $$B_s$$Bs meson to a charmonium state and a $$K^+K^-$$K+K- pair are carefully investigated in the perturbative QCD approach. Following the latest fit from the LHCb • K. Vos • Physics Proceedings of The International Conference on B-Physics at Frontier Machines — PoS(BEAUTY2018) • 2018 The study of CP violation in$B$-meson decays has already reached a high level of precision, which will be pushed even higher in the future era of Belle-II and the LHCb upgrade. %Important probes of ## References SHOWING 1-10 OF 17 REFERENCES • Physics • 2007 A bstractWe study B → ππ form factors using QCD light-cone sum rules with B-meson distribution amplitudes. These form factors describe the semileptonic decay B→ππℓν¯ℓ$\$ B\to \pi \pi \ell
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The existing calculations of the form factors describing the decay B → ρeν from QCD sum rules have yielded conflicting results at small values of the invariant mass squared of the lepton pair. We
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The widely used nonperturbative wave functions and distribution functions of QCD are determined as matrix elements of light-ray operators. These operators appear as large momentum limit of nonlocal
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We calculate the two-pion light-cone distribution amplitudes in the effective low-energy theory based on the instanton vacuum. These generalized distribution amplitudes describe the soft
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