Measurements of the top-quark mass and properties at CMS

International Workshop on Discovery Physics at the LHC

Dünser, Marc^1,1

ETH Zürich, Institute for Particle Physics (IPP), HPK E 32, Otto-Stern-Weg 5, Zürich

CH - 8093, Switzerland^1

关键词: Anomalous couplings;    Centre-of-mass energies;    Decay channels;    Gain information;    Measurements of;    New physics;    The standard model;    Top quarks;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/623/1/012011/pdf
DOI  :  10.1088/1742-6596/623/1/012011

来源: IOP

【 摘 要 】

Measurements of the top-quark mass and other top-quark properties are presented, obtained from the CMS data collected in 2011 and 2012 at centre-of-mass energies of 7 and 8 TeV. The mass of the top quark is measured using several methods and decay channels. The measurements of the top-quark properties include the W helicity in top-quark decays, the search for anomalous couplings, and the ratio of top-quarks decaying to bW over qW in order to gain information on /Vtb/ using both tt and single-top quark event samples. The results are compared with predictions from the standard model as well as new physics models. The cross section of tt events produced in association with a W, Z boson or a photon is also measured.