Results 1 to 10 of about 48,672 (174)
A closer look at the extraction of |Vub| from B → πℓν
Journal of High Energy Physics, 2021 To extract the Cabibbo-Kobayashi-Maskawa (CKM) matrix element |V ub |, we have re-analyzed all the available inputs (data and theory) on the B → πℓν decays including the newly available inputs on the form-factors from light cone sum rule (LCSR) approach.
Aritra Biswas +3 more
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Potential and limitations of machine-learning approaches to inclusive |V ub | determinations
Journal of High Energy Physics, 2022 The determination of |V ub | in inclusive semileptonic B → X u ℓν decays will be among the pivotal tasks of Belle II. In this paper we study the potential and limitations of machine-learning approaches that attempt to reduce theory uncertainties by ...
Anke Biekötter +2 more
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Journal of High Energy Physics, 2021 Measurements of electroweak precision observables at future electron-position colliders, such as the CEPC, FCC-ee, and ILC, will be sensitive to physics at multi-TeV scales.
Lisong Chen, Ayres Freitas
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Determination of the charm quark mass in lattice QCD with 2 + 1 flavours on fine lattices
Journal of High Energy Physics, 2021 We present a determination of the charm quark mass in lattice QCD with three active quark flavours. The calculation is based on PCAC masses extracted from N f = 2 + 1 flavour gauge field ensembles at five different lattice spacings in a range from 0.087 ...
Jochen Heitger +2 more
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Journal of High Energy Physics, 2021 Parity solutions to the strong CP problem are a compelling alternative to approaches based on Peccei-Quinn symmetry, particularly given the expected violation of global symmetries in a theory of quantum gravity.
Nathaniel Craig +3 more
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Weak mixing angle in the Thomson limit
Journal of High Energy Physics, 2018 We present a calculation of the weak mixing angle in the M S ¯ $$ \overline{\mathrm{MS}} $$ renormalization scheme which is relevant for experiments performed at very low energies or momentum transfers.
Jens Erler, Rodolfo Ferro-Hernández
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Light quark Yukawas in triboson final states
Journal of High Energy Physics, 2021 Triple heavy vector boson production, pp → VVV (V = W, Z), has recently been observed for the first time. We propose that precision measurements of this process provide an excellent probe of the first generation light quark Yukawa couplings.
Adam Falkowski +6 more
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B →ππ form factors from light-cone sum rules with B-meson distribution amplitudes
Journal of High Energy Physics, 2017 We study B → ππ form factors using QCD light-cone sum rules with B-meson distribution amplitudes. These form factors describe the semileptonic decay B → π π ℓ ν ¯ ℓ $$ B\to \pi \pi \ell {\overline{\nu}}_{\ell } $$ , and constitute an essential input in B
Shan Cheng +2 more
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Dispersion relation analysis of the radiative corrections to g A in the neutron β-decay
Journal of High Energy Physics, 2021 We present the first and complete dispersion relation analysis of the inner radiative corrections to the axial coupling constant g A in the neutron β-decay. Using experimental inputs from the elastic form factors and the spin-dependent structure function
Mikhail Gorchtein, Chien-Yeah Seng
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Extraction of |Vcb| from B → D(∗) ℓν ℓ and the Standard Model predictions of R(D(∗))
Journal of High Energy Physics, 2017 We extract |V cb | from the available data in the decay B → D (∗) ℓν ℓ . B → D ∗ ℓν ℓ , the unfolded binned differential decay rates of four kinematic variables including the q 2 bins have been used.
Sneha Jaiswal +2 more
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