ﻻ يوجد ملخص باللغة العربية
We explore the physics of a new neutral gauge boson, ($Z^prime$), coupling to only third-generation particles with a mass near the electroweak gauge boson mass poles. A $Z^prime$ boson produced by top quarks and decaying to tau leptons is considered. With a simple search strategy inspired by existing analyses of the standard model gauge boson production in association with top quarks, we show that the Large Hadron Collider has good exclusionary power over the model parameter space of the $Z^prime$ boson even at the advent of the high-luminosity era. It is shown that the $tbar{t}Z^prime$ process allows one to place limits on right-handed top couplings with a $Z^prime$ boson that preferentially couples to third generation fermions, which are at present very weakly constrained.
Unification at M_{GUT}sim 3times 10^{16} GeV of the three Standard Model (SM) gauge couplings can be achieved by postulating the existence of a pair of vectorlike fermions carrying SM charges and masses of order 300 GeV -- 1 TeV. The presence of thes
Family gauge boson production at the LHC is investigated according to a $U(3)$ family gauge model with twisted family number assignment. In the model we study, a family gauge boson with the lowest mass, $A_1^{ 1}$, interacts only with the first gener
A heavy Standard Model Higgs boson is not only disfavored by electroweak precision observables but is also excluded by direct searches at the 7 TeV LHC for a wide range of masses. Here, we examine scenarios where a heavy Higgs boson can be made consi
For the purpose of cross-fertilising currently separate experimental approaches, we connect results of LHC analyses attempting to access the properties of additional $W^prime$ and $Z^prime$ bosons from Drell-Yan processes. Under theoretical assumptio
We search for signatures of the extra neutral gauge boson $ Z^prime$, predicted in some extensions of the Standard Model, from the analysis of some distributions for $p + p longrightarrow mu^+ + mu^- + X$, where the only exotic particle involved is $