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

Please use this identifier to cite or link to this item: https://ir.lib.ncu.edu.tw/handle/987654321/105057

Title:	Inclusive search for squarks and gluinos in pp collisions at √s=7TeV
Authors:	張元翰;Chatrchyan, S
Contributors:	理學院物理學系
Keywords:	Accessibility;Collisions;Large Hadron Collider;Pair production;Rejection;Searching;Standard model (particle physics);Supersymmetry;Texts
Date:	2012-01-11
Issue Date:	2026-04-23 12:05:43 (UTC+8)
Abstract:	摘要： A search is performed for heavy particle pairs produced in [radical]s = 7 TeV proton-proton collisions with 35 pb super(-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 (ProQuest: Formulae and/or non-USASCII text omitted). The new physics signal is characterized by a broad peak in the distribution of M sub(R), an event-by-event indicator of the heavy particle mass scale. This new approach is complementary to (ProQuest: Formulae and/or non-USASCII text omitted)-based searches. After background modeling based on data, and background rejection based on R and M sub(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. 出版日期： 2012-01-11 出處： Physical Review D (Particles, Fields, Gravitation and Cosmology), 2012-01, Vol.85 (1) 識別號： ISSN: 1550-7998 識別號： EISSN: 1089-4918 識別號： DOI: 10.1103/PhysRevD.85.012004
Appears in Collections:	[Department of Physics] journal & Dissertation

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