Results 31 to 40 of about 82,911 (161)

Search for a charged Higgs boson decaying to charm and bottom quarks in proton-proton collisions at s = 8 $$ \sqrt{s}=8 $$ TeV

open access: yesJournal of High Energy Physics, 2018
A search for charged Higgs boson decaying to a charm and a bottom quark ( H + → c b ¯ $$ {\mathrm{H}}^{+}\to \mathrm{c}\overline{\mathrm{b}} $$ ) is performed using 19.7 fb−1 of pp collision data at s = 8 $$ \sqrt{s}=8 $$ TeV.
The CMS collaboration   +2304 more
doaj   +1 more source

Bottom Quark Fragmentation in Top Quark Decay

open access: yes, 2001
We study the fragmentation of the b quark in top decay in NLO QCD, within the framework of perturbative fragmentation, which allows one to resum large logarithms $\sim\log (m_t^2/m_b^2)$. We show the b-energy distribution, which we compare with the exact
A.D. Mitov   +50 more
core   +2 more sources

Associated Production of a Top Quark and a Charged Higgs Boson [PDF]

open access: yes, 2005
We compute the inclusive and differential cross sections for the associated production of a top quark along with a charged Higgs boson at hadron colliders to next-to-leading order (NLO) in perturbative quantum chromodynamics (QCD) and in supersymmetric ...
B. C. Allanach   +11 more
core   +2 more sources

Do electroweak precision data and Higgs-mass constraints rule out a scalar bottom quark with mass of O(5 GeV)? [PDF]

open access: yes, 2000
We investigate the phenomenological implications of a light scalar bottom quark, with a mass of about the bottom quark mass, within the minimal supersymmetric standard model.
A. Djouadi   +24 more
core   +2 more sources

Bottom-quark effects in Higgs production at intermediate transverse momentum

open access: yesJournal of High Energy Physics, 2018
We provide a precise description of the Higgs boson transverse momentum distribution including top and bottom quark contributions, that is valid for transverse momenta in the range m b  ≲ p ⊥ ≲ m t , where m b and m t are the bottom and top quark masses.
Fabrizio Caola   +5 more
doaj   +1 more source

Analytic decay width of the Higgs boson to massive bottom quarks at next-to-next-to-leading order in QCD

open access: yesJournal of High Energy Physics
The Higgs boson decay to a massive bottom quark pair provides the dominant contribution to the Higgs boson width. We present an exact result for such a decay induced by the bottom quark Yukawa coupling with next-to-next-to-leading order (NNLO) QCD ...
Jian Wang, Yefan Wang, Da-Jiang Zhang
doaj   +1 more source

Light Quark Mass Effects in Bottom Quark Mass Determinations [PDF]

open access: yes, 2001
Recent results for charm quark mass effects in perturbative bottom quark mass determinations from $\Upsilon$ mesons are reviewed. The connection between the behavior of light quark mass corrections and the infrared sensitivity of some bottom quark mass ...
Hoang, A. H.
core   +3 more sources

S-wave bottom tetraquarks

open access: yes, 2009
The relativistic four-quark equations are found in the framework of coupled-channel formalism. The dynamical mixing of the meson-meson states with the four-quark states is considered.
Adachi I.   +5 more
core   +1 more source

Eight weeks of post‐exercise local heating does not improve cognition and plasma brain‐derived neurotrophic factor concentrations

open access: yesExperimental Physiology, EarlyView.
Abstract Exercise and heat stress have been reported to independently provide benefits to brain health. We tested the hypothesis that 8 weeks of post‐exercise local heating, passive local heating only, or exercise training only improves cognitive performance compared to a control group.
Jem L. Cheng   +6 more
wiley   +1 more source

Search for a new scalar resonance in flavour-changing neutral-current top-quark decays t → qX (q = u, c), with X → b b ¯ $$ b\overline{b} $$ , 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 flavour-changing neutral-current decays of a top quark into an up-type quark (either up or charm) and a light scalar particle X decaying into a bottom anti-bottom quark pair is presented. The search focuses on top-quark pair production where
The ATLAS collaboration   +2910 more
doaj   +1 more source

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