Studying of the Single Top Quark Produced by Anomalous Interactions Tcg and Tug

Please enable javascript in your browser.

Pooya, Ghasem | 2010

518 Viewed

Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 40654 (04)
University: Sharif University of Technology
Department: Physics
Advisor(s): Ardalan,Farhad; Mohammadi Najafabadi, Mojtaba
Abstract:
Anomalous top quark interactions with gluon (tug , tcg) allow the production of single top quarks at the LHC. Two main sources of backgrounds which we took into account are W +1j and standard model single top production. In order to do it, we examine the reconstructed angular distribution of the charged lepton in the rest frame of W boson from the top quark. It is defined in terms of the angle θ_l , between the charged lepton momentum in the rest frame of the W boson and the momentum of the W boson in the rest frame of the top quark. Using this angular distribution of the charged lepton from the W boson in the top decay، we show that with the data of 10fb^(-1) of integrated luminosity and in the collisions with the center of mass energy of 14 TeV, the anomalous up and charm quarks coupling parameters K_(u,c)/Λ can be measured down to 0.004 TeV^(-1) and 0.006 TeV^(-1) respectively.
Keywords:
Top Quark ; Large Hadronic Collider ; Flavor Changing Neutral Current

No TOC