scholarly journals T -odd correlations in polarized top quark decays in the sequential decay t(↑)→Xb+W+(→ℓ++νℓ) and in the quasi-three-body decay t(↑)→Xb+ℓ++νℓ

2018 ◽  
Vol 97 (9) ◽  
Author(s):  
M. Fischer ◽  
S. Groote ◽  
J. G. Körner
Keyword(s):  
Top Quark ◽  
Sequential Decay ◽  
Quark Decays ◽  
Three Body

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.

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 CONVOLUTION FORMULA AND FINITE W BOSON WIDTH EFFECTS IN TOP QUARK WIDTH

2008 ◽  
Vol 23 (22) ◽  
pp. 3525-3533 ◽  
Author(s):  
G. CALDERÓN ◽  
G. LÓPEZ CASTRO
Keyword(s):  
Top Quark ◽  
W Boson ◽  
Matrix Theory ◽  
Finite Width ◽  
Current Limit ◽  
Fermion Masses ◽  
Convolution Formula ◽  
Boson Resonance ◽  
Three Body ◽  
Massless Fermions

In the Standard Model, the top quark decay width Γt is computed from the exclusive t → bW decay. We argue in favor of using the three body decays [Formula: see text] to compute Γt as a sum over these exclusive modes. As dictated by the S-matrix theory, these three body decays of the top quark involve only asymptotic states and incorporate the width of the W boson resonance in a natural way. The convolution formula commonly used to include the finite width effects is found to be valid, in the general case, when the intermediate resonance couples to a conserved current (limit of massless fermions in the case of W bosons). The relation Γt = Γ(t → bW) is recovered by taking the limit of massless fermions followed by the W boson narrow width approximation. Although both calculations of Γt are different at the formal level, their results would differ only by tiny effects induced by light fermion masses and higher-order radiative corrections.

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

scholarly journals Search for flavor changing neutral currents in top quark decays in pp collisions at 7 TeV

2013 ◽  
Vol 718 (4-5) ◽  
pp. 1252-1272 ◽  
Author(s):  
S. Chatrchyan ◽  
V. Khachatryan ◽  
A.M. Sirunyan ◽  
A. Tumasyan ◽  
W. Adam ◽  
...  
Keyword(s):  
Top Quark ◽  
Neutral Currents ◽  
Pp Collisions ◽  
Flavor Changing ◽  
Quark Decays ◽  
Flavor Changing Neutral Currents
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