scholarly journals CP violating anomalous top-quark coupling in p$\bar{p}$ collision at $\sqrt{s}=1.96$ TeV

2011 ◽  
Author(s):  
Sehwook Lee
Keyword(s):  
Top Quark ◽  
Quark Coupling

scholarly journals On the LHC signatures of $$SU(5)\times U(1)'$$ F-theory motivated models

2021 ◽  
Vol 81 (1) ◽  
Author(s):  
A. Karozas ◽  
G. K. Leontaris ◽  
I. Tavellaris ◽  
N. D. Vlachos
Keyword(s):  
Gauge Symmetry ◽  
Top Quark ◽  
B Meson ◽  
Monodromy Group ◽  
Single Point ◽  
Tree Level ◽  
Fermion Mass ◽  
Internal Space ◽  
Quark Coupling ◽  
Rank One

AbstractWe study low energy implications of F-theory GUT models based on SU(5) extended by a $$U(1)'$$ U ( 1 ) ′ symmetry which couples non-universally to the three families of quarks and leptons. This gauge group arises naturally from the maximal exceptional gauge symmetry of an elliptically fibred internal space, at a single point of enhancement, $$E_8\supset SU(5)\times SU(5)'\supset SU(5)\times U(1)^4.$$ E 8 ⊃ S U ( 5 ) × S U ( 5 ) ′ ⊃ S U ( 5 ) × U ( 1 ) 4 . Rank-one fermion mass textures and a tree-level top quark coupling are guaranteed by imposing a $$Z_2$$ Z 2 monodromy group which identifies two abelian factors of the above breaking sequence. The $$U(1)'$$ U ( 1 ) ′ factor of the gauge symmetry is an anomaly free linear combination of the three remaining abelian symmetries left over by $$Z_2$$ Z 2 . Several classes of models are obtained, distinguished with respect to the $$U(1)'$$ U ( 1 ) ′ charges of the representations, and possible extra zero modes coming in vector-like representations. The predictions of these models are investigated and are compared with the LHC results and other related experiments. Particular cases interpreting the B-meson anomalies observed in LHCb and BaBar experiments are also discussed.

MEASURING THE $H t\bar t$ COUPLING IN e+e− COLLISIONS

1992 ◽  
Vol 07 (19) ◽  
pp. 1765-1769 ◽  
Author(s):  
A. DJOUADI ◽  
J. KALINOWSKI ◽  
P.M. ZERWAS
Keyword(s):  
Standard Model ◽  
Top Quark ◽  
Top Quarks ◽  
Mass Range ◽  
High Energy ◽  
Fundamental Parameter ◽  
Quark Coupling ◽  
The Standard Model

Higgs radiation off heavy top quarks in high-energy e+e− colliders may be exploited to measure the Higgs-top quark coupling. We explore the mass range for which the process [Formula: see text] provides access to this fundamental parameter in the Standard Model.

scholarly journals The anomalous top quark coupling tqg and tW production at the LHC

2011 ◽  
Vol 705 (3) ◽  
pp. 222-227 ◽  
Author(s):  
Chong-Xing Yue ◽  
Jue Wang ◽  
You Yu ◽  
Ting-Ting Zhang
Keyword(s):  
Top Quark ◽  
Quark Coupling

Anomalous top-quark coupling effects in rare B and K decays

2014 ◽  
Vol 59 (29-30) ◽  
pp. 3760-3770 ◽  
Author(s):  
Ya-Dong Yang ◽  
Xing-Bo Yuan
Keyword(s):  
Top Quark ◽  
Coupling Effects ◽  
Quark Coupling

Top Quark Results at the Tevatron

2009 ◽  
Author(s):  
Ernest Aguiló
Keyword(s):  
Top Quark
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