Supersymmetric three-body decays of the top quark in the MSSM

1997 ◽  
Vol 74 (2) ◽  
pp. 337-354 ◽  
Author(s):  
Jaume Guasch ◽  
Joan Solà
Keyword(s):  
Top Quark ◽  
Three Body

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 Top quark three-body decays in theR-parity violating MSSM

2009 ◽  
Vol 79 (9) ◽  
Author(s):  
Zhaoxia Heng ◽  
Gongru Lu ◽  
Lei Wu ◽  
Jin Min Yang
Keyword(s):  
Top Quark ◽  
Three Body

Three-body decays of a heavy top quark in two-Higgs-doublet models

1995 ◽  
Vol 51 (9) ◽  
pp. 4971-4978 ◽  
Author(s):  
Chong Sheng Li ◽  
Bing Quan Hu ◽  
Jin Min Yang
Keyword(s):  
Top Quark ◽  
Higgs Doublet ◽  
Two Higgs Doublet Models ◽  
Three Body

IMPLICATIONS OF A LARGE $Ht \bar{t}$-COUPLING FOR THREE-BODY DECAYS OF HIGGS BOSON AND TOP QUARK

1991 ◽  
Vol 06 (38) ◽  
pp. 3491-3497 ◽  
Author(s):  
R. DECKER ◽  
M. NOWAKOWSKI ◽  
A. PILAFTSIS
Keyword(s):  
Top Quark ◽  
Branching Ratios ◽  
Higgs Particle ◽  
Coupling Constant ◽  
Decay Channels ◽  
The Standard Model ◽  
The Common ◽  
The Masses ◽  
Three Body ◽  
O 10

The three-body decays a heavy Higgs [Formula: see text], [Formula: see text] and of a heavy top t → bW+ H are studied in the context of the Standard Model. The common feature of these decay channels is the relative big coupling constant of the Higgs particle to the top quark. Indeed within a certain range of the masses M H , mt we find that branching ratios of the order O(10-3) are possible for the decays [Formula: see text] and t → bW+ H. The decay with [Formula: see text] as a function of M H and mt is investigated below the 2mt threshold (Mtt < 2mt) and is found to have an interesting behaviour just near this threshold.

scholarly journals Top quark rare three-body decays in the littlest Higgs model withTparity

2011 ◽  
Vol 83 (3) ◽  
Author(s):  
Jinzhong Han ◽  
Bingzhong Li ◽  
Xuelei Wang
Keyword(s):  
Top Quark ◽  
Higgs Model ◽  
Three Body

Erratum: Three-body decays of a heavy top quark in two-Higgs-doublet models

1996 ◽  
Vol 53 (9) ◽  
pp. 5325-5325 ◽  
Author(s):  
Chong Sheng Li ◽  
Bing Quan Hu ◽  
Jin Min Yang
Keyword(s):  
Top Quark ◽  
Higgs Doublet ◽  
Two Higgs Doublet Models ◽  
Three Body

scholarly journals ERRATUM: IMPLICATIONS OF A LARGE $Ht\bar{t}$-COMPLING FOR THREE-BODY DECAYS OF HIGGS BOSON AND TOP QUARK

1992 ◽  
Vol 07 (09) ◽  
pp. 819-819 ◽  
Author(s):  
R. DECKER ◽  
M. NOWAKOWSKI ◽  
A. PILAFTSIS
Keyword(s):  
Higgs Boson ◽  
Top Quark ◽  
Three Body

scholarly journals Dominant three-body decays of a heavy higgs and top quark

1993 ◽  
Vol 57 (2) ◽  
pp. 339-347 ◽  
Author(s):  
Roger Decker ◽  
Marek Nowakowski ◽  
Apostolos Pilaftsis
Keyword(s):  
Top Quark ◽  
Three Body
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