Top quark couplings and polarization

11th International Conference on Hyperons, Charm and Beauty Hadrons

Codispoti, Giuseppe^1,1

Dipartimento di Fisica e Astronomia, Viale Berti Pichat 6/2, Bologna (BO)

40127, Italy^1

关键词: Anomalous couplings;    CKM matrix;    Fraction measurements;    Helicities;    Measurements of;    Pair production;    Precise measurements;    Top quarks;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/556/1/012031/pdf
DOI  :  10.1088/1742-6596/556/1/012031

来源: IOP

【 摘 要 】

Precise measurements of top quark couplings are presented. The measurements cover the single top tW cross section, the top-quark branching-fraction ratio R=B(t → Wb)/B(t → Wq) and the CKM matrix element Vtbfrom the single top cross sections. Top quark polarisation in the t-channel single-top quark production and dilepton tt, and W-helicity fraction measurements along with searches of top quark anomalous couplings in lepton plus jet channel are also presented. Finally measurements of top quark pair production in association with a W or Z boson or a photon are presented.