Results 21 to 30 of about 132,196 (260)
Top quark decays into heavy quark mesons [PDF]
For top quark decays into heavy quark mesons $ $ and $\bar{B}_c^*$ , a complete calculation to the leading order both in QCD coupling constant $ _s$ and in $v$, the typical velocity of the heavy quarks inside the mesons, is performed. Relatons between the top quark mass and the decay branching ratios are studied.
Qiao, Cong-Feng +2 more
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THE SINGLE TOP QUARK PHYSICS [PDF]
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.
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Top Quark Measurements in CMS [PDF]
Measurements involving top quarks provide important tests of QCD. A selected set of top quark measurements in CMS including the strong coupling constant, top quark pole mass, constraints on parton distribution functions, top quark pair differential cross
Yazgan, Efe
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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 (
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Polarization of top quark in vector-like quark decay
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
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Probing the Top-Quark Electric Dipole Moment at a Photon Linear Collider [PDF]
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
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Quantum entanglement and top spin correlations in SMEFT at higher orders
We present the first analysis of top spin polarizations, t t ¯ $$ t\overline{t} $$ spin correlations, and t t ¯ $$ t\overline{t} $$ spin entanglement at the LHC in the context of the Standard Model Effective Field Theory, that goes beyond Leading Order ...
Claudio Severi, Eleni Vryonidou
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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.
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▪ Abstract Since the discovery of the bottom quark in 1977, physicists have searched for the top quark, the weak isospin partner of the bottom quark. Indirect evidence and estimates of its mass have been made; however, direct observation eluded scientists until recently.
Stephen J. Wimpenny, Brian L. Winer
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On the top-quark width measurement using a combination of resonant and non resonant cross sections.
Top quark width measurement is important and complex task. Most measurements are done in assumption of the SM top quark interactions. We would like to discuss model independent way of measuring the top quark width.
Baskakov Alexey, Boos Eduard, Dudko Lev
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