Search for pair production of excited top quarks in the lepton+jets final state - INSPIRE

DataBETA

Search for pair production of excited top quarks in the lepton+jets final state

CMS

Collaboration

2017

14 pages

Report number:

CMS-PAS-B2G-16-025

Experiments:

CERN-LHC-CMS

View in:

CERN Document Server

reference search3 citations

Citations per year

Abstract:

A search is performed for pair production of spin-3/2 excited top quarks, each decaying to a top quark and a gluon. The search uses the data collected with the CMS detector from pp collisions at a center-of-mass energy of

\sqrt{s}=13\,\textrm{TeV}

, corresponding to an integrated luminosity of 36

\,\textrm{fb}^{-1}

. The selected events require the presence of an isolated muon or electron, an imbalance in the transverse momentum, and at least six jets, out of which exactly two must be compatible with originating from the fragmentation of a b quark. The analysis shows no significant excess over the standard model predictions, and provides a lower limit of

1.2\,\textrm{TeV}

at

95\%

confidence level on the mass of the spin-3/2 excited top quark in an extension of the Randall--Sundrum model, assuming a

100\%

branching fraction of its decay into a top quark and a gluon.

Note:

Preliminary results

Data
p p: colliding beams
top: pair production
quark: excited state
quark: decay
jet: bottom
bottom: fragmentation
p p: scattering
bottom: particle identification
gluon

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Figures(9)

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