Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in s√=8 TeV pp collisions with the ATLAS detector

, The ATLAS collaboration (2013) Search for direct third-generation squark pair production in final states with missing transverse momentum and two b-jets in s√=8 TeV pp collisions with the ATLAS detector. Journal of High Energy Physics, 2013 (10). ISSN 1029-8479

[img]
Preview
PDF (art%3A10.1007%2FJHEP10%282013%29189)
art_3A10.1007_2FJHEP10_282013_29189.pdf - Published Version
Available under License Creative Commons Attribution.

Download (848kB)

Abstract

The results of a search for pair production of supersymmetric partners of the Standard Model third-generation quarks are reported. This search uses 20.1 fb−1 of pp collisions at s√=8 TeV collected by the ATLAS experiment at the Large Hadron Collider. The lightest bottom and top squarks ( b˜1 and t˜1 respectively) are searched for in a final state with large missing transverse momentum and two jets identified as originating from b-quarks. No excess of events above the expected level of Standard Model background is found. The results are used to set upper limits on the visible cross section for processes beyond the Standard Model. Exclusion limits at the 95 % confidence level on the masses of the third-generation squarks are derived in phenomenological supersymmetric R-parity-conserving models in which either the bottom or the top squark is the lightest squark. The b˜1 is assumed to decay via b˜1→b∼0χ1 and the t˜1 via t˜1→b∼±χ1 , with undetectable products of the subsequent decay of the ∼±χ1 due to the small mass splitting between the ∼±χ1 and the ∼0χ1 .

Item Type:
Journal Article
Journal or Publication Title:
Journal of High Energy Physics
Additional Information:
This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
ID Code:
67915
Deposited By:
Deposited On:
10 Dec 2013 00:01
Refereed?:
Yes
Published?:
Published
Last Modified:
26 Nov 2020 02:28