Measurement of the top polarization in the dilepton final state

CMS Physics Analysis Summaries
Report number	CMS-PAS-TOP-12-016
Title	Measurement of the top polarization in the dilepton final state
Corporate author(s)	CMS Collaboration
Collaboration	CMS Collaboration
Subject category	Particle Physics - Experiment
Accelerator/Facility, Experiment	CERN LHC ; CMS
Abstract	A measurement of the top quark polarization in \ttll\ events is performed in a data sample corresponding to a total integrated luminosity of \Lumiyt\ collected by the CMS experiment in pp collisions at a centre-of-mass energy of 7~TeV at the LHC. %In view of a significant excess reported in the top forward backward asymmetry at the Tevatron, The measured value in the helicity basis is $P_{n} = -0.009 \pm 0.029 \pm 0.041$, in agreement with the standard model expectation. %These results are used to constrain contribution from axigluon production as well as from a t-channel \cPWpr\ exchange.
Other source	Inspire
Email contact: cms-pag-conveners-top@cern.ch Fulltext in PDF Figure_001-a Figure_001-b Figure_002-a Figure_002-b Figure_003-a Figure_003-b Figure_004 Additional information for the analysis (restricted access)