Results 41 to 50 of about 1,124 (167)
Top and bottom quark condensates
Zeitschrift f�r Physik C Particles and Fields, 1991 It is possible that electroweak symmetry might be broken dynamically by a condensate of top quarks. We extend a previous study of top quark dynamics to include the bottom quark. The simultaneous gap equations in dressed ladder approximation for∑ t (p),∑ b (p) are studied numerically ...
S. F. King, S. H. Mannan
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Final-state rescattering mechanism in bottom-baryon decays
Journal of High Energy PhysicsThe first observation of CP violation in baryon decays was recently reported by the LHCb collaboration in Λ b 0 $$ {\Lambda}_b^0 $$ → pK − π + π − with A CP = (2.45 ± 0.46 ± 0.10)%, which inspires the study on baryon non-leptonic decays. In this work, we
Zhu-Ding Duan +4 more
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Revisiting semileptonic B meson decays at next-to-next-to-leading order
Journal of High Energy Physics, 2023 We compute next-to-next-to-leading order corrections to the semileptonic decay rate of B mesons for arbitrary values of the final-state quark mass. For the contribution with one massive quark in the final state, we extend the literature result and obtain
Manuel Egner +3 more
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Higgs production in association with bottom quarks [PDF]
Journal of High Energy Physics, 2015 We study the production of a Higgs boson in association with bottom quarks in hadronic collisions, and present phenomenological predictions relevant to the 13 TeV LHC. Our results are accurate to the next-to-leading order in QCD, and matched to parton showers through the MC@NLO method; thus, they are fully differential and based on unweighted events ...
Wiesemann, M. +5 more
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Journal of High Energy Physics, 2017 We provide a systematic renormalization group formalism for the mass effects in the relation of the pole mass m Q pole and short-distance masses such as the M S ¯ $$ \overline{\mathrm{MS}} $$ mass m ¯ Q $$ {\overline{m}}_Q $$ of a heavy quark Q, coming ...
André H. Hoang +2 more
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The simplest B decay, precisely
Journal of High Energy PhysicsWe derive the QCD×QED factorization theorem governing the leptonic decay B − → μ − ν ¯ μ γ $$ {B}^{-}\to {\mu}^{-}{\overline{\nu}}_{\mu}\left(\gamma \right) $$ at all orders in α s and α.
Claudia Cornella +3 more
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Complementary constraints on Zb b ¯ $$ Zb\overline{b} $$ couplings at the LHC
Journal of High Energy Physics, 2023 We propose a new strategy to probe the Z boson couplings to bottom and charm quarks at the LHC. In this work we mainly focus on the case of bottom quarks. Here, the Z boson is produced in association with two b-jets and decays to electrons or muons.
Fady Bishara, Zhuoni Qian
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Nonleptonic B-meson decays to next-to-next-to-leading order
Journal of High Energy PhysicsWe compute next-to-next-to-leading order QCD corrections to the partonic processes b → c u ¯ d $$ c\overline{u}d $$ and b → c c ¯ s $$ c\overline{c}s $$ , which constitute the dominant decay channels in standard model predictions for B-meson lifetimes ...
Manuel Egner +3 more
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Higgs boson decay into four bottom quarks in the SM and beyond
Journal of High Energy Physics, 2019 We present predictions for the Higgs boson decay into four bottom quarks in the standard model and via light exotic scalars retaining full bottom-quark mass dependence.
Jun Gao
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PRECISE DETERMINATIONS OF THE CHARM AND BOTTOM QUARK MASSES [PDF]
Modern Physics Letters A, 2013 A finite-energy sum-rule is presented that allows for the use of combinations of both positive- and inverse-moment integration kernels. The freedom afforded from being able to employ this large class of integration kernels in our sum-rule is then exploited to obtain the values of the charm and bottom masses with minimum total uncertainty. We obtain as
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