Results 151 to 160 of about 1,004,536 (238)
Nonperturbative parameters of inclusive Λ b decays from Small Velocity Sum Rules
Journal of High Energy PhysicsWe 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
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Correlated study on some B c → P and B c → S wave channels in light of new inputs
Journal of High Energy PhysicsThis 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
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Bottom Quark Physics - Past, Present, Future
, 2000 On the occasion of a symposium honoring my collegue Adrian Melissinos, I gave an informal, personal review of bottom quark physics. This paper is a writeup of that talk. I first summarize the early days, the decade from the discovery through the determination of the b quark's rough features. I note a change in objective which occurred around 1990, with
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Analyzing the semileptonic and nonleptonic B c → J/ψ, η c decays
Journal of High Energy PhysicsThis 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
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Towards a global analysis of the b → c u ¯ q $$ b\to c\overline{u}q $$ puzzle
Journal of High Energy PhysicsWe study the nonleptonic decays B ¯ s 0 → D s ∗ + π − $$ {\overline{B}}_s^0\to {D}_s^{\left(\ast \right)+}{\pi}^{-} $$ and B ¯ 0 → D ∗ + K − $$ {\overline{B}}^0\to {D}^{\left(\ast \right)+}{K}^{-} $$ within the Weak Effective Theory (WET) up to mass ...
Stefan Meiser +2 more
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Machine Learning Approach to Analyze the Heavy Quark Diffusion Coefficient in Relativistic Heavy Ion Collisions. [PDF]
Entropy (Basel), 2023 Guo R, Li Y, Chen B.
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Measurements of the bottom quark mass
, 2000 I will review new measurements of the b quark mass, presented at this conference by ALEPH and DELPHI. A large set of observables has been used and detailed studies on jet algorithms have been performed. These measurements at the Z peak are consistent with the results obtained at the Upsilon scale when assuming the running of the b quark mass as ...
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Journal of High Energy PhysicsWe investigate the decays B c − $$ {B}_c^{-} $$ → D ¯ ∗ 0 ℓ − ν ¯ ℓ $$ {\overline{D}}^{\left(\ast \right)0}{\ell}^{-}{\overline{\nu}}_{\ell } $$ and B c − $$ {B}_c^{-} $$ → D (∗)− ℓ + ℓ − within the Standard Model (SM), employing perturbative QCD (pQCD ...
Utsab Dey, Soumitra Nandi
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Analytic result of Higgs boson decay to gluons with full quark mass dependence
Physics Letters BWe 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
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Tests of bottom quark CSM properties
, 2017 We look for possible (partial) compositeness properties of the bottom quark according to the Composite Standard Model (CSM) concept in the same way this was previously done for Higgs boson and top quark. After looking at the direct form factor effects appearing in $e^+e^-\to b\bar b$ we analyze the more complex features of the $e^+e^-, gg, \to b ...
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