Results 1 to 10 of about 322 (124)
QED factorization of two-body non-leptonic and semi-leptonic B to charm decays
Journal of High Energy Physics, 2021 The QCD×QED factorization is studied for two-body non-leptonic and semi-leptonic B decays with heavy-light final states. These non-leptonic decays, like B ¯ s 0 → D s + π − $$ {\overline{B}}_{(s)}^0\to {D}_{(s)}^{+}{\pi}^{-} $$ and B ¯ d 0 → D + K − $$ {\
Martin Beneke +3 more
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Quantum entanglement and Bell inequality violation in semi-leptonic top decays
Journal of High Energy PhysicsQuantum entanglement is a fundamental property of quantum mechanics. Recently, studies have explored entanglement in the t t ¯ $$ t\overline{t} $$ system at the Large Hadron Collider (LHC) when both the top quark and anti-top quark decay leptonically ...
Tao Han, Matthew Low, Tong Arthur Wu
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Journal of High Energy Physics, 2023 We present the first application of QCD light-cone sum rules (LCSRs) with B (s)-meson distribution amplitudes to the B s → D s 0 ∗ $$ {B}_{(s)}\to {D}_{(s)0}^{\ast } $$ form factors, where D s 0 ∗ $$ {D}_{(s)0}^{\ast } $$ is a charmed scalar meson.
Nico Gubernari +3 more
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Alternative treatment of the quark mass in the heavy quark expansion
Journal of High Energy Physics, 2023 The treatment of the quark mass plays an important role when it comes to increasing the precision of the predictions of the heavy quark expansion for inclusive heavy hadron decays.
Anastasia Boushmelev +2 more
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First extraction of inclusive V cb from q 2 moments
Journal of High Energy Physics, 2022 We present the first determination of V cb from inclusive B → X c ℓ v ¯ ℓ $$ B\to {X}_c \ell {\overline{v}}_{\ell} $$ using moments of the dilepton invariant mass, q 2.
Florian Bernlochner +6 more
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Study of the b → dℓℓ transitions in the Standard Model and test of New Physics sensitivities
Journal of High Energy Physics, 2023 After incorporating all the available experimental data and the most up-to-date Lattice and light cone sum rule (LCSR) inputs on the form factors, we analyze the exclusive b → uℓν ℓ and b → dℓℓ decays simultaneously.
Aritra Biswas +3 more
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Quark-hadron duality at work: lifetimes of bottom baryons
Journal of High Energy Physics, 2023 In the 1990s, very low experimental values for the lifetime ratio τ(Λ b )/τ(B d ) triggered a considerable amount of doubt in the applicability of the heavy quark expansion (HQE), which is based on the assumption of quark-hadron duality (QHD) for ...
James Gratrex +5 more
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Revisiting inclusive decay widths of charmed mesons
Journal of High Energy Physics, 2022 Determining for the first time the Darwin operator contribution for the non-leptonic charm-quark decays and using new non-perturbative results for the matrix elements of ∆C = 0 four-quark operators, including eye-contractions, we present a comprehensive ...
Daniel King +5 more
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Journal of High Energy Physics, 2022 We perform the first calculation of form factors in the semileptonic decays B → D 1(2420)ℓν ℓ and B → D 1 ′ $$ {D}_1^{\prime } $$ (2430)ℓν ℓ using QCD light-cone sum rules (LCSRs) with B-meson distribution amplitudes. In this calculation the c-quark mass
Nico Gubernari +3 more
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Disintegration of beauty: a precision study
Journal of High Energy Physics, 2023 We update the Standard Model (SM) predictions for B-meson lifetimes within the heavy quark expansion (HQE). Including for the first time the contribution of the Darwin operator, SU(3) F breaking corrections to the matrix element of dimension-six four ...
Alexander Lenz +2 more
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