Measurements of t t-bar spin correlations and top quark polarization using dilepton final states in pp collisions at sqrt(s) = 8 TeV

Built on

[ Chatrchyan:2013wua
Cited in the paper.
[ Chatrchyan:2013wua
Cited in the paper.
The polarization P ± P^{\pm} of the top quark (antiquark) in the helicity basis is given by P ± = 2 A P ± P^{\pm}=2A_{P\pm} [ Bernreuther2013115
Cited in the paper.
For \ttbar
Cited in the paper.
In addition to the inclusive measurements, we determine the asymmetries differentially as a function of three variables describing the \ttbar
Cited in the paper.
The central feature of the CMS apparatus is a superconducting solenoid of 6 \unit
Cited in the paper.
Events are selected using triggers that require the presence of at least two leptons (electrons or muons) with transverse momentum ( \pt
Cited in the paper.
The particle-flow (PF) algorithm [ CMS-PAS-PFT-09-001
Cited in the paper.
The events with an \Pep \Pem \Pep\Pem or \Pgmp \Pgmm \Pgmp\Pgmm pair having an invariant mass, M ℓ ℓ M_{\ell\ell} , within 15 \GeV
Cited in the paper.
The PF particles are clustered to form jets using the anti- \kt
Cited in the paper.
The selected events are required to contain at least two jets with \pt > 30 \GeV \pt>30\GeV and \abs η < 2.4 \abs{\eta}<2.4 . At least one of these jets must be consistent with containing the decay of a bottom ( \PQb \PQb ) flavored hadron, as identified using the medium operating point of the combined secondary vertex (CSV) \PQb \PQb quark tagging algorithm [ ref:btag
Cited in the paper.
The missing transverse momentum vector \ptvecmiss
Cited in the paper.

Nothing clear enough to list yet.