Results 71 to 80 of about 2,164 (186)

Total decay rates of B mesons at NNLO-QCD

open access: yesJournal of High Energy Physics
We update the Standard Model (SM) predictions for the lifetimes of the B +, B d and B s mesons within the heavy quark expansion (HQE), including the recently determined NNLO-QCD corrections to non-leptonic decays of the free b-quark.
Manuel Egner   +6 more
doaj   +1 more source

Three-jet production at LEP and the bottom quark mass [PDF]

open access: green, 1995
Mikhail Bilenky   +2 more
openalex   +1 more source

Analyzing the semileptonic and nonleptonic B c → J/ψ, η c decays

open access: yesJournal of High Energy Physics
This study focuses on the decay of the B c meson to S-wave charmonia. Starting with lattice inputs on B c → J/ψ form factors, we have obtained the B c → η c form factors using heavy quark spin symmetry (HQSS) relations between the associated form factors
Aritra Biswas   +2 more
doaj   +1 more source

Correlated study on some B c → P and B c → S wave channels in light of new inputs

open access: yesJournal of High Energy Physics
This study investigates the decay modes of the B c meson, focusing on semileptonic and nonleptonic decay into S and P wave charmonia. The primary objective is to extract the shape parameter of the B c meson distribution amplitude through a data-driven ...
Utsab Dey, Soumitra Nandi
doaj   +1 more source

Challenging B ¯ s → D s ∗ $$ {\overline{B}}_{(s)}\to {D}_{(s)}^{\left(\ast \right)} $$ form factors with the heavy quark expansion

open access: yesJournal of High Energy Physics
Recent publications by three lattice QCD collaborations have provided an unprecedented wealth of theoretical predictions for the B ¯ q → D q ∗ $$ {\overline{B}}_q\to {D}_q^{\left(\ast \right)} $$ form factors, for spectator flavours q = u/d and q = s. We
Marzia Bordone   +3 more
doaj   +1 more source

Analytic result of Higgs boson decay to gluons with full quark mass dependence

open access: yesPhysics Letters B
We report the first analytic calculation of the Higgs boson decay width to gluons up to next-to-leading order in quantum chromodynamics including full dependence on the bottom and charm quark masses.
Jian Wang, Yefan Wang
doaj   +1 more source

Nonperturbative parameters of inclusive Λ b decays from Small Velocity Sum Rules

open access: yesJournal of High Energy Physics
We investigate the nonperturbative parameters entering the heavy quark expansion for the inclusive decay rates of the Λ b baryon, focusing on the kinetic term μ ̂ π 2 $$ {\hat{\mu}}_{\pi}^2 $$ and the Darwin term ρ ̂ D 3 $$ {\hat{\rho}}_D^3 $$ .
Blaženka Melić, Ivan Nišandžić
doaj   +1 more source

Search for dark matter produced in association with a Higgs boson decaying to a pair of bottom quarks in proton-proton collisions at s = 13 Te . [PDF]

open access: yesEur Phys J C Part Fields, 2019
Sirunyan AM   +2297 more
europepmc   +1 more source

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