Is it the top quarkof the Standard Model (SM) with electric charge 2/3 or is it an exotic quarkwith charge -4/3? An exotic quark has been proposed by D. Chang etal.\cite{hep-ph/9810531, hep-ph/9805273}. This analysis will use the standardCDF run II dilepton sample. The key ...
In this thesis, the first determination of the electric charge of the top\nquark is presented using 370pb-1 of data recorded by the D0 detector at the\nFermilab Tevatron accelerator. ttbar events are selected with one isolated\nelectron or muon and at least four jets out of which two ...
In this thesis, the first determination of the electric charge of the top quark is presented using 370pb-1 of data recorded by the D0 detector at the Fermilab Tevatron accelerator. ttbar events are selected with one isolated electron or muon and at least four jets out of which two are b...
As a result, the asymmetry between the $t$ and $\\bar t$ generated at NLO in QCD is significantly larger than that of inclusive $t \\bar t$ production, which is dominated by gluon fusion. Second, the top quarks tend to inherit the polarization of the initial-state quarks as induced ...
quarkchargecollidershadronmeasurementdirect arXiv:hep-ph/0106341v128Jun2001UR-1637UB-HET-01-03June2001DirectMeasurementoftheTopQuarkChargeatHadronCollidersU.Baur∗DepartmentofPhysics,StateUniversityofNewYork,Buffalo,NY14260,USAM.Buice†DepartmentofPhysics,UniversityofChicago,5640S.EllisAve.,Chicago,IL...
The measurements are performed using events with two oppositely charged leptons (electrons or muons) and two or more jets, where at least one of the jets is identified as originating from a bottom quark. The charge asymmetry is measured from differences in kinematic distributions, unfolded to the...
Feynman has suggested that the average charge of hadrons produced in a particular kinematic region in deep-inelastic lepton scattering reflects the charge of the struck constituent. It is shown that such hadronic tests for the quark charge depend on specific properties of the final-state interaction...
Brodsky, "Application of the Principle of Maximum Conformality to the Top-Quark Charge Asymmetry at the LHC," Phys. Rev. D 90, 11, 114034 (2014) [arXiv:1410.1607 [hep-ph]].S. Q. Wang, X. G. Wu, Z. G. Si, and S. J. Brodsky, Ap- plication of the principle of maximum ...
Make sure you know the charge of (u,c,t:2/3) (d,s, b:-1/3) quarks. Please write all possible quark flavors for following baryons and count the their charges:暂无答案更多“make sure you know the charge of (u,c,t:2/3) (d,s, b:-1/3) quarks. please write all possible ...
A search for pair-produced heavy vectorlike charge-2/3 quarks, T, in pp collisions at a center-of-mass energy of 7 TeV, is performed with the CMS detector at the LHC. Events consistent with the flavor-changing-neutral-current decay of a T quark to a top quark and a Z boson are se...