Search for standard model production of four top quarks in proton-proton collisions at root s=13TeV

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1-s2.0-S0370269317305403-main(1).pdf (875.78 KB)

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OA Location

http://www.sciencedirect.com/science/article/pii/S0370269317305403?via=ihub

Author(s)

Sirunyan, AM

Tumasyan, A

Adam, W

Asilar, E

Bergauer, T

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Type

Journal Article

Abstract

A search for events containing four top quarks () is reported from proton–proton collisions recorded by the CMS experiment at and corresponding to an integrated luminosity of 2.6 fb−1. The analysis considers the single-lepton (e or μ)+jets and the opposite-sign dilepton (, , or )+jets channels. It uses boosted decision trees to combine information on the global event and jet properties to distinguish between and production. The number of events observed after all selection requirements is consistent with expectations from background and standard model signal predictions, and an upper limit is set on the cross section for production in the standard model of 94 fb at 95% confidence level ( the prediction), with an expected limit of 118 fb. This is combined with the results from the published CMS search in the same-sign dilepton channel, resulting in an improved limit of 69 fb at 95% confidence level ( the prediction), with an expected limit of 71 fb. These are the strongest constraints on the rate of production to date.

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Date Issued

2017-06-28

Date Acceptance

2017-06-24

Citation

PHYSICS LETTERS B, 2017, 772, pp.336-358

URI

http://hdl.handle.net/10044/1/52943

DOI

https://www.dx.doi.org/10.1016/j.physletb.2017.06.064

ISSN

0370-2693

Publisher

ELSEVIER SCIENCE BV

Start Page

336

End Page

358

Journal / Book Title

PHYSICS LETTERS B

Volume

772

Copyright Statement

©
2017
The
Author(s).
Published
by
Elsevier
B.V.
This
is
an
open
access
article
under
the
CC
BY
license
(http://creativecommons.org/licenses/by/4.0/
).

Identifier

http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000411369700051&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202

Subjects

Science & Technology

Physical Sciences

Astronomy & Astrophysics

Physics, Nuclear

Physics, Particles & Fields

Physics

CMS

Top

BSM

CROSS-SECTION

0202 Atomic, Molecular, Nuclear, Particle And Plasma Physics

Nuclear & Particles Physics

Publication Status

Published