Results 11 to 20 of about 81,110 (210)

Viscous QCD medium effects on the bottom quark transport coefficients

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
The bottom quark transport coefficients, i.e., drag and diffusion coefficients, have been studied for the collisional and soft gluon radiative processes within the viscous QCD medium.
Adiba Shaikh   +2 more
doaj   +1 more source

Search for a light charged Higgs boson in t → H ± b decays, with H ± → cb, in the lepton+jets final state in proton-proton collisions at s $$ \sqrt{s} $$ = 13 TeV with the ATLAS detector

open access: yesJournal of High Energy Physics, 2023
A search for a charged Higgs boson, H ± , produced in top-quark decays, t → H ± b, is presented. The search targets H ± decays into a bottom and a charm quark, H ± → cb. The analysis focuses on a selection enriched in top-quark pair production, where one
The ATLAS collaboration   +2901 more
doaj   +1 more source

Bottom quark mass with calibrated uncertainty

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We determine the bottom quark mass $${\hat{m}}_b$$ m ^ b from QCD sum rules of moments of the vector current correlator calculated in perturbative QCD to $${{\mathcal {O}}} ({\hat{\alpha }}_s^3)$$ O ( α ^ s 3 ) .
Jens Erler   +2 more
doaj   +1 more source

Top-Quark Mass and Bottom-Quark Decay [PDF]

open access: yes, 1983
The possibility of a long B-meson lifetime is explored, in which case the weak mixing angles θ_2 and θ_3 are quite small. This allows the derivation of a lower bound on the top-quark mass as a function of the B-meson lifetime, by comparison of the short ...
Ginsparg, Paul H.   +2 more
core   +2 more sources

Detection prospects of a low-mass pseudoscalar Higgs in bottom-quark fusion in the NMSSM at the LHC

open access: yesResults in Physics, 2021
The production of a light pseudoscalar Higgs boson in the NMSSM context at the LHC via bottom-quark fusion, bb¯→a1, followed by the a1→τ+τ- decay mode is discussed. We show that there exist some regions of parameter space of the NMSSM in which a low-mass
M.M. Almarashi
doaj   +1 more source

Search for Scalar Bottom Quark Pair Production with the ATLAS Detector in pp Collisions at √s = 7 TeV [PDF]

open access: yes, 2012
The results of a search for pair production of the scalar partners of bottom quarks in 2.05  fb^(-1) of pp collisions at √s=7  TeV using the ATLAS experiment are reported.
Aad, G.   +4 more
core   +1 more source

Bottom Quark Mass from $\Upsilon$ Sum Rules to ${\cal O}(\alpha_s^3)$ [PDF]

open access: yes, 2014
We use the ${\cal O}(\alpha_s^3)$ approximation of the heavy-quark vacuum polarization function in the threshold region to determine the bottom quark mass from nonrelativistic $\Upsilon$ sum rules.
Penin, Alexander A., Zerf, Nikolai
core   +2 more sources

Bottom-hadron production in high-energy pp and heavy-ion collisions [PDF]

open access: yesEPJ Web of Conferences
The hadro-chemistry of bottom quarks produced in hadronic collisions encodes valuable information on the mechanism of color-neutralization in these reactions.
He Min
doaj   +1 more source

Low-energy matrix elements of heavy-quark currents

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
In QCD at energies well below a heavy-quark threshold, the heavy-quark vector current can be represented via local operators made of the lighter quarks and of the gluon fields.
Harvey B. Meyer
doaj   +1 more source

Bottomonium continuous production from unequilibrium bottom quarks in ultrarelativistic heavy ion collisions

open access: yesPhysics Letters B, 2017
We employ the Langevin equation and Wigner function to describe the bottom quark dynamical evolutions and their formation into a bound state in the expanding Quark Gluon Plasma (QGP).
Baoyi Chen, Jiaxing Zhao
doaj   +1 more source

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