Search for Anomalous Top Chromomagnetic Dipole Moments from angular distributions in ttˉt\bar{t} Dileptonic events at s=7\sqrt{s}=7 TeV with the CMS detector.

Collaboration
2014
9 pages
Report number:
  • CMS-PAS-TOP-14-005
Experiments:

Citations per year

2014201720202023202401234567
Abstract:
A search for new physics in the form of a top quark chromo-magnetic anomalous coupling is performed using a previous measurement of the differential ttˉ\mathrm{t\bar{t}} cross section as a function of the difference in azimuthal angle between the two charged leptons, Δϕll|\Delta \phi_{ll}|, in the dilepton decay mode. The measured value of Re(μ^t)Re(\hat{\mu}_t) is 0.037±0.0410.037 \pm 0.041 and no sign of new physics is observed. Limits on the real part of the chromomagnetic dipole moment Re(μ^t)Re(\hat{\mu}_t) are determined at 95\% Confidence Level as -0.043<Re(μ^t)<< Re(\hat{\mu}_t) < 0.117.
Note:
  • Preliminary results
  • Data
  • dipole: chromomagnetic
  • top: pair production
  • new physics: search for
  • dilepton: final state
  • top: moment: chromomagnetic
  • angular distribution
  • CMS
  • p p: scattering
  • angular correlation: dilepton