Results 11 to 20 of about 1,004,536 (238)

Observation of Higgs Boson Decay to Bottom Quarks. [PDF]

open access: yesPhysical Review Letters, 2018
The observation of the standard model (SM) Higgs boson decay to a pair of bottom quarks is presented. The main contribution to this result is from processes in which Higgs bosons are produced in association with a W or Z boson (VH), and are searched for ...
A. Sirunyan   +499 more
semanticscholar   +30 more sources

Higgs-Boson Production Induced by Bottom Quarks [PDF]

open access: yesPhysical Review D, 2003
Bottom quark-induced processes are responsible for a large fraction of the LHC discovery potential, in particular for supersymmetric Higgs bosons. Recently, the discrepancy between exclusive and inclusive Higgs boson production rates has been linked to ...
A. Belyaev   +63 more
core   +2 more sources

Spectroscopy of mesons with bottom quarks [PDF]

open access: yesProceedings of 37th International Symposium on Lattice Field Theory — PoS(LATTICE2019), 2020
Preliminary results for the spectra of excited and exotic bottom mesons are presented. The calculation on a dynamical anisotropic ensemble exploits distillation, enabling the use of a large basis of interpolating operators including those proportional to
S. Ryan
semanticscholar   +4 more sources

Top, Bottom Quarks and Higgs Bosons [PDF]

open access: yesFlavor Physics, 2002
In this talk, I will discuss possible new physics effects that modify the interaction of Higgs boson(s) with top and bottom quarks, and discuss how to detect such effects in current and future high energy colliders.Comment: LaTeX, 16 pages including 5 ...
F. Wegner   +4 more
core   +5 more sources

Fragmentation of bottom quarks in top quark decay

open access: yes, 2004
We review the main aspects of the fragmentation of bottom quarks in top quark decay. The NLO b-quark energy spectrum presents large mass logarithms ln(m_t^2/m_b^2), which can be resummed by the use of the approach of perturbative fragmentation functions.
Corcella, Gennaro
core   +3 more sources

Probing dark matter couplings to top and bottom quarks at the LHC [PDF]

open access: yesPhysical Review D, 2013
Monojet searches are a powerful way to place model-independent constraints on effective operators coupling dark matter to the standard model. For operators generated by the exchange of a scalar mediator, however, couplings to light quarks are suppressed ...
Tongyan Lin, E. Kolb, Lian-tao Wang
semanticscholar   +3 more sources

Vector-like bottom quarks in composite Higgs models [PDF]

open access: yesJournal of High Energy Physics, 2013
Like many other models, Composite Higgs Models feature the existence of heavy vector-like quarks. Mixing effects between the Standard Model fields and the heavy states, which can be quite large in case of the top quark, imply deviations from the SM.
Marc Gillioz   +3 more
semanticscholar   +8 more sources

Effects of isospin violation in the e + e − → B (*) B ¯ $$ \overline{B} $$ (*) cross sections

open access: yesJournal of High Energy Physics, 2022
Model estimates are obtained for the influence of Coulomb effects on the ratio of the cross sections for the production of charged and neutral B B ¯ $$ \overline{B} $$ and B * B ¯ $$ \overline{B} $$ * pairs in e + e − annihilation.
A. E. Bondar   +3 more
doaj   +1 more source

Bottom-quark fragmentation in top-quark decay [PDF]

open access: yesNuclear Physics B, 2002
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 ${\cal O} ( _S)$ result for a massive b quark.
Corcella, Gennaro, Mitov, Alexander D.
openaire   +2 more sources

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