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Inclusive search for squarks and gluinos in pp collisions at √s=7  TeV

(CMS Collaboration) Chatrchyan, S.; Brigljević, Vuko; Đurić, Senka; Kadija, Krešo; Morović, Srećko (2012) Inclusive search for squarks and gluinos in pp collisions at √s=7  TeV. Physical Review D, 85 (1). 012004/1-012004/23. ISSN 1550-7998

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Abstract

A search is performed for heavy particle pairs produced in root s = 7 TeV proton-proton collisions with 35 pb(-1) of data collected by the CMS experiment at the LHC. The search is sensitive to squarks and gluinos of generic supersymmetry models, provided they are kinematically accessible, with minimal assumptions on properties of the lightest superpartner particle. The kinematic consistency of the selected events is tested against the hypothesis of heavy particle pair production using the dimensionless razor variable R, related to the missing transverse energy E-T(miss). The new physics signal is characterized by a broad peak in the distribution of M-R, an event-by-event indicator of the heavy particle mass scale. This new approach is complementary to E-T(miss)-based searches. After background modeling based on data, and background rejection based on R and M-R, no significant excess of events is found beyond the standard model expectations. The results are interpreted in the context of the constrained minimal supersymmetric standard model as well as two simplified supersymmetry models.

Item Type: Article
Uncontrolled Keywords: missing transverse-momentum; proton-proton collisions; atlas detector; supersymmetry; extension; neutrino; program; events; jets
Subjects: NATURAL SCIENCES > Physics
NATURAL SCIENCES > Physics > Physics of Elementary Particles and Fields
NATURAL SCIENCES > Physics > Astronomy and Astrophysics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Eksperimentalna fizika na LHC energijama[93132] Krešo Kadija098-0982887-2878MZOS
Depositing User: Krešo Kadija
Date Deposited: 17 Sep 2013 12:03
Last Modified: 03 Feb 2016 15:06
URI: http://fulir.irb.hr/id/eprint/620
DOI: 10.1103/PhysRevD.85.012004

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