Results 1 to 10 of about 2,801 (184)

Z boson production in bottom-quark fusion: a study of b-mass effects beyond leading order [PDF]

open access: yesEuropean Physical Journal C: Particles and Fields, 2018
We compute the total cross-section for Z boson production in bottom-quark fusion, applying to this case the method we previously used for Higgs production in bottom fusion.
Stefano Forte   +2 more
doaj   +2 more sources

Quark production in the bottom-up thermalization

open access: diamondPhysics Letters B
We investigate the impact of quark production on bottom-up thermalization in heavy-ion collisions. First, we extend the parametric estimates of bottom-up thermalization in pure gluon systems by incorporating quark production in the weak-coupling (high ...
Sergio Barrera Cabodevila   +3 more
doaj   +2 more sources

The bottom-quark mass from non-relativistic sum rules at NNNLO [PDF]

open access: goldNuclear Physics B, 2015
We determine the mass of the bottom quark from high moments of the bb¯ production cross section in e+e− annihilation, which are dominated by the threshold region.
M. Beneke, A. Maier, J. Piclum, T. Rauh
doaj   +2 more sources

Higgs boson production in association with massive bottom quarks at NNLO+PS [PDF]

open access: greenJournal of High Energy Physics
We study the production of a Higgs boson in association with a bottom-quark pair b b ¯ H $$ \left(b\overline{b}H\right) $$ at hadron colliders. Our calculation is performed in the four-flavour scheme with massive bottom quarks.
Christian Biello   +4 more
doaj   +2 more sources

Bottom (70,1-) baryon multiplet [PDF]

open access: yesE3S Web of Conferences, 2020
The aim of this paper is to derive systems of equations for the amplitudes for the case of negative parity (70,1-) bottom nonstrange baryons and to calculate the masses of these particles. In order to calculate masses of (70,1-) bottom baryons we use the
Matskevich Elena
doaj   +1 more source

Search for W′ bosons decaying to a top and a bottom quark at s=13TeV in the hadronic final state

open access: yesPhysics Letters B, 2021
A search is performed for W′ bosons decaying to a top and a bottom quark in the all-hadronic final state, in proton-proton collisions at a center-of-mass energy of 13TeV.
A.M. Sirunyan   +2332 more
doaj   +1 more source

Improved indirect limits on charm and bottom quark EDMs

open access: yesJournal of High Energy Physics, 2022
We derive indirect limits on the charm and bottom quark electric dipole moments (EDMs) from paramagnetic AMO and neutron EDM experiments. The charm and bottom quark EDMs generate CP-odd photon-gluon operators and light quark EDMs at the c- and b-quark ...
Yohei Ema, Ting Gao, Maxim Pospelov
doaj   +1 more source

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

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