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

Chatrchyan, S. ; Khachatryan, V. ; Sirunyan, A. M. ; Tumasyan, A. ; Adam, W. ; Mondal, N. K. (2012) Inclusive search for squarks and gluinos in pp collisions at √s=7 TeV Physical Review D - Particles, Fields, Gravitation and Cosmology, 85 (1). 012004_1-012004_23. ISSN 1550-7998

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Official URL: http://prd.aps.org/abstract/PRD/v85/i1/e012004

Related URL: http://dx.doi.org/10.1103/PhysRevD.85.012004

Abstract

A search is performed for heavy particle pairs produced in √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 ETmiss. The new physics signal is characterized by a broad peak in the distribution of MR, an event-by-event indicator of the heavy particle mass scale. This new approach is complementary to ETmiss-based searches. After background modeling based on data, and background rejection based on R and MR, 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
Source:Copyright of this article belongs to The American Physical Society.
ID Code:88117
Deposited On:27 Mar 2012 08:23
Last Modified:27 Mar 2012 08:23

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