Results 11 to 20 of about 1,106 (138)
Resolving charged hadrons in QED — gauge invariant interpolating operators
Journal of High Energy Physics, 2022 Standard interpolating operators for charged mesons, e.g. J B = b ¯ $$ \overline{b} $$ iγ 5 u for B − , are not gauge invariant in QED and therefore problematic for perturbative methods.
Saad Nabeebaccus, Roman Zwicky
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Journal of High Energy Physics, 2022 The physics potential of measuring B s 0 $$ {B}_{(s)}^0 $$ → π 0 π 0 and B s 0 $$ {B}_{(s)}^0 $$ → ηη decays via four-photon final states at Tera-Z phase of CEPC or FCC-ee is investigated in this paper.
Yuexin Wang +6 more
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More on heavy tetraquarks in lattice QCD at almost physical pion mass
EPJ Web of Conferences, 2018 We report on our progress in studying exotic, heavy tetraquark states, qq′ Q̅Q̅′. Using publicly available dynamical nf = 2 + 1 Wilson-Clover gauge configurations, generated by the PACS-CS collaboration, with pion masses ≃ 164, 299 and 415 MeV, we extend
Francis Anthony +3 more
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Improved theory predictions and global analysis of exclusive b → sμ + μ − processes
Journal of High Energy Physics, 2022 We provide improved Standard Model theory predictions for the exclusive rare semimuonic processes B → K (*) μ + μ − and B s → ϕμ + μ − . Our results are based on a novel parametrization of the non-local form factors, which manifestly respects a recently ...
Nico Gubernari +3 more
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Complete analysis on QED corrections to B q → τ + τ −
Journal of High Energy Physics, 2023 Motivated by a dynamical enhancement of the electromagnetic corrections by a power of ΛQCD/m b in B d,s → μ + μ − at next-to-leading order (NLO), we extend the QED factorization effects on the leptonic B meson decays with light muon leptons to tauonic ...
Yong-Kang Huang +3 more
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2b or not 2b: on the rejection of g → b b ¯ $$ b\overline{b} $$ jets
Journal of High Energy Physics, 2023 Motivated by new physics models which lead to final states containing a high multiplicity of bottom and top quarks, we develop a tagging strategy to suppress reducible and non-reducible multi-jet backgrounds. The idea takes advantage of the properties of
Beni Pazar, Enrico Lunghi
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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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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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The mass spectrum and wave functions of the B c system
Journal of High Energy Physics, 2022 The spectrum and relativistic wave functions of B c system are investigated via solving the complete Salpeter equation. Emphases are put on the study of the partial waves of each J P state.
Guo-Li Wang +3 more
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Journal of High Energy Physics, 2023 In light of the current discrepancies between the recent predictions based on QCD factorisation (QCDF) and the experimental data for several non-leptonic colour-allowed two-body B-meson decays, we obtain new determinations of the non-factorisable soft ...
Maria Laura Piscopo, Aleksey V. Rusov
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