Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/101798
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at √s = 7 TeV |
Other Titles: | Search for scalar top quark pair production in natural gauge mediated supersymmetry models with the ATLAS detector in pp collisions at root s = 7 TeV |
Author: | Aad, G. ATLAS Collaboration, |
Citation: | Physics Letters B: Nuclear Physics and Particle Physics, 2012; 715(1-3):44-60 |
Publisher: | Elsevier |
Issue Date: | 2012 |
ISSN: | 0370-2693 1873-2445 |
Statement of Responsibility: | G. Aad ... P. Jackson ... L. Lee ... A. Petridis ... N. Soni ... M. J. White ... et al. (ATLAS Collaboration) |
Abstract: | The results of a search for pair production of the lighter scalar partners of top quarks (˜t₁) in 2.05 fb⁻¹ of pp collisions at √s = 7 TeV using the ATLAS experiment at the LHC are reported. Scalar top quarks are searched for in events with two same flavour opposite-sign leptons (e,μ) with invariant mass consistent with the Z boson mass, large missing transverse momentum and jets in the final state. At least one of the jets is identified as originating from a b-quark. No excess over Standard Model expectations is found. The results are interpreted in the framework of R-parity conserving, gauge mediated Supersymmetry breaking ‘natural’ scenarios, where the neutralino ( ˜χ 0 1 ) is the next-to-lightest supersymmetric particle. Scalar top quark masses up to 310 GeV are excluded for 115 GeV < m ˜χ 0 1 < 230 GeV at 95% confidence level, reaching an exclusion of m˜t1 < 330 GeV for m ˜χ 0 1 = 190 GeV. Scalar top quark masses below 240 GeV are excluded for all values of m ˜χ 0 1 >mZ . |
Rights: | © 2012 CERN. Published by Elsevier B.V. Open access under CC BY-NC-ND license. [https://creativecommons.org/licenses/by-nc-nd/4.0/] |
DOI: | 10.1016/j.physletb.2012.07.010 |
Grant ID: | ARC |
Published version: | http://dx.doi.org/10.1016/j.physletb.2012.07.010 |
Appears in Collections: | Aurora harvest 7 Physics publications |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
hdl_101798.pdf | Published version | 983.52 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.