Search for supersymmetry in hadronic final states with missing transverse energy using the variables α[subscript T] and b-quark multiplicity in pp collisions at √s = 8 TeV

Search for supersymmetry in hadronic final states with missing transverse energy using the variables α[subscript T] and b-quark multiplicity in pp collisions at √s = 8 TeV

An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV. The data sample corresponds to an integrated luminosity of 11.7 fb[superscript −1] collected by the CMS experiment at...

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Bibliographic Details
Main Authors: Apyan, Aram, Bauer, Gerry P, Busza, Wit, Butz, Erik M., Cali, Ivan Amos, Dutta, Valentina, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Klute, Markus, Levin, Andrew Michael, Luckey Jr, P David, Ma, Teng, Nahn, Steven, Paus, Christoph M. E., Roland, Christof E, Roland, Gunther M, Stephans, George S. F., Stoeckli, Fabian, Sumorok, Konstanty C, Sung, Kevin Kai Hong, Velicanu, Dragos Alexandru, Wolf, Roger, Wyslouch, Boleslaw, Yang, Mingming, Yilmaz, Yetkin, Yoon, Andrew, Zanetti, Marco, Wyslouch, Victoria, Chan, M., Kim, Y.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: 2017
Online Access:http://hdl.handle.net/1721.1/109937
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0002-1136-6900
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0001-6332-5839
Description
Summary:An inclusive search for supersymmetric processes that produce final states with jets and missing transverse energy is performed in pp collisions at a centre-of-mass energy of 8 TeV. The data sample corresponds to an integrated luminosity of 11.7 fb[superscript −1] collected by the CMS experiment at the LHC. In this search, a dimensionless kinematic variable, αT, is used to discriminate between events with genuine and misreconstructed missing transverse energy. The search is based on an examination of the number of reconstructed jets per event, the scalar sum of transverse energies of these jets, and the number of these jets identified as originating from bottom quarks. No significant excess of events over the standard model expectation is found. Exclusion limits are set in the parameter space of simplified models, with a special emphasis on both compressed-spectrum scenarios and direct or gluino-induced production of third-generation squarks. For the case of gluino-mediated squark production, gluino masses up to 950–1125 GeV are excluded depending on the assumed model. For the direct pair-production of squarks, masses up to 450 GeV are excluded for a single light first- or second-generation squark, increasing to 600 GeV for bottom squarks.

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