scholarly journals Top quark decays into heavy quark mesons

1996 ◽  
Vol 54 (9) ◽  
pp. 5606-5610 ◽  
Author(s):  
Cong-Feng Qiao ◽  
Chong Sheng Li ◽  
Kuang-Ta Chao
Keyword(s):  
Heavy Quark ◽  
Top Quark ◽  
Quark Decays

scholarly journals Heavy-flavor hadro-production with heavy-quark masses renormalized in the $$ \overline{\mathrm{MS}} $$, MSR and on-shell schemes

2021 ◽  
Vol 2021 (4) ◽  
Author(s):  
M. V. Garzelli ◽  
L. Kemmler ◽  
S. Moch ◽  
O. Zenaiev
Keyword(s):  
Heavy Quark ◽  
Cross Sections ◽  
Top Quark ◽  
Quark Mass ◽  
Production Cross ◽  
Hadron Collider ◽  
Distribution Functions ◽  
Heavy Flavor ◽  
Parton Distribution Functions ◽  
Heavy Quark Mass

Abstract We present predictions for heavy-quark production at the Large Hadron Collider making use of the $$ \overline{\mathrm{MS}} $$ MS ¯ and MSR renormalization schemes for the heavy-quark mass as alternatives to the widely used on-shell renormalization scheme. We compute single and double differential distributions including QCD corrections at next-to-leading order and investigate the renormalization and factorization scale dependence as well as the perturbative convergence in these mass renormalization schemes. The implementation is based on publicly available programs, MCFM and xFitter, extending their capabilities. Our results are applied to extract the top-quark mass using measurements of the total and differential $$ t\overline{t} $$ t t ¯ production cross-sections and to investigate constraints on parton distribution functions, especially on the gluon distribution at low x values, from available LHC data on heavy-flavor hadro-production.

scholarly journals Erratum to: The electro-weak couplings of the top and bottom quarks — global fit and future prospects

2021 ◽  
Vol 2021 (1) ◽  
Author(s):  
Gauthier Durieux ◽  
Adrian Irles ◽  
Víctor Miralles ◽  
Ana Peñuelas ◽  
Martín Perelló ◽  
...  
Keyword(s):  
Top Quark ◽  
Current Data ◽  
Bottom Quarks ◽  
Future Prospects ◽  
Quark Decays ◽  
Global Fit

In the course of follow-up work a mistake was discovered in the parameterization of the dependence of the W-boson helicity fractions in top quark decays. The dependence on two operator coefficients, Cφtb and CbW, was erroneously omitted. Inclusion of this dependence leads to significantly stronger bounds on these operators from the current data and modifies also the HL-LHC prospects. The expectations for e+e− colliders are not affected. We present corrected results in this erratum.

QCD corrections to heavy quark decays

2007 ◽  
Vol 85 (6) ◽  
pp. 613-617
Author(s):  
I Blokland
Keyword(s):  
Heavy Quark ◽  
Symbolic Computation ◽  
Decay Rates ◽  
Special Cases ◽  
Quark Decays ◽  
Quark Decay

The calculation of QCD corrections to heavy quark decay rates has progressed steadily in recent years. With the help of specialized techniques, symbolic computation, and a growing base of experience, a wide variety of special cases have been evaluated. These results have been applied to decays such as t → bW, b → s γ, b → u[Formula: see text]ν, and b → c[Formula: see text]ν. PACS Nos.: 12.38.Bx, 13.30.Ce

scholarly journals Measurement of the helicity fractions ofWbosons from top quark decays using fully reconstructedtt¯events with CDF II

2007 ◽  
Vol 75 (5) ◽  
Author(s):  
A. Abulencia ◽  
J. Adelman ◽  
T. Affolder ◽  
T. Akimoto ◽  
M. G. Albrow ◽  
...  
Keyword(s):  
Top Quark ◽  
Quark Decays ◽  
Cdf Ii

scholarly journals Finite width effects in top quark decays

1995 ◽  
Vol 347 (3-4) ◽  
pp. 394-398 ◽  
Author(s):  
Gregory Mahlon ◽  
Stephen Parke
Keyword(s):  
Top Quark ◽  
Finite Width ◽  
Quark Decays

Search for Charged Higgs in Top Quark Decays at CDF

2008 ◽  
Author(s):  
Geumbong Yu ◽  
Pyungwon Ko ◽  
Deog Ki Hong ◽  
Keyword(s):  
Top Quark ◽  
Quark Decays ◽  
Charged Higgs
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