Results 21 to 30 of about 126,977 (209)

Four-top quark physics at the LHC

open access: yesUniverse, 2022
The production of four top quarks presents a rare process in the Standard Model that provides unique opportunities and sensitivity to Standard Model observables including potential enhancement of many popular new physics extensions.
Freya Blekman   +3 more
doaj   +1 more source

Top quark physics [PDF]

open access: yesNuclear Physics B - Proceedings Supplements, 1994
16 pages (12 figures not included). Talk presented at DESY-Zeuthen Workshop on Elementary Particle Theory: "Physics at LEP200 and Beyond", Teupitz, Germany, April 1994; to appear in the proceedings, Nucl.Phys.B (Suppl.). Latex + espcrc2.sty. A complete postscript file, including figures, is available via anonymous ftp at ttpux2.physik.uni-karlsruhe.de (
openaire   +2 more sources

TOP QUARK MEASUREMENTS [PDF]

open access: yesInternational Journal of Modern Physics A, 2006
Ten years after its discovery at the Tevatron collider, we still know little about the top quark. Its large mass suggests it may play a key role in the mechanism of Electroweak Symmetry Breaking (EWSB), or open a window of sensitivity to new physics related to EWSB and preferentially coupled to it.
openaire   +3 more sources

Probing the Top-Quark Electric Dipole Moment at a Photon Linear Collider [PDF]

open access: yes, 1995
We probe the top-quark electric dipole moment (EDM) in top-quark pair production via photon-photon fusion at a photon linear collider. We show how linearly-polarized photon beams can be used to extract information on the top-quark EDM without the use of ...
Anlauf   +14 more
core   +3 more sources

Observation of four top quark production in proton-proton collisions at s=13TeV

open access: yesPhysics Letters B, 2023
The observation of the production of four top quarks in proton-proton collisions is reported, based on a data sample collected by the CMS experiment at a center-of-mass energy of 13 TeV in 2016–2018 at the CERN LHC and corresponding to an integrated ...
A. Hayrapetyan   +2361 more
doaj   +1 more source

THE SINGLE TOP QUARK PHYSICS [PDF]

open access: yesInternational Journal of Modern Physics A, 2012
The single top quark production has an electroweak nature and provides an additional support to the top pair production source of the top quarks. The processes involving single top have unique properties and are very interesting from both theoretical and experimental viewpoints.
Boos, E., Dudko, L.
openaire   +2 more sources

Polarization of top quark in vector-like quark decay

open access: yesPhysics Letters B, 2019
Vector-like quarks (VLQs) are attractive extensions to the Standard Model. They mix with the SM quarks and can lead to rich phenomenology. Determination of VLQ's interaction structure with the SM is then an important issue, which can be inferred from the
Hang Zhou, Ning Liu
doaj   +1 more source

Observation of the Top Quark [PDF]

open access: yesPhysical Review Letters, 1995
postscript available at http://fnnews.fnal.gov/top_paper_dzero.ps, for further info see http://fnnews.fnal.gov/top_discovery ...
S. Abachi   +218 more
openaire   +4 more sources

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

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

open access: yesPhysical Review Letters, 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-distance prediction for the CP-nonconservation parameter e with its experimental value. The bound is
Paul H. Ginsparg   +2 more
openaire   +1 more source

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