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Opening Up the Compressed Region of Top Squark Searches at 13 TeV LHC

An, Haipeng and Wang, Lian-Tao (2015) Opening Up the Compressed Region of Top Squark Searches at 13 TeV LHC. Physical Review Letters, 115 (18). Art. No. 181602. ISSN 0031-9007. https://resolver.caltech.edu/CaltechAUTHORS:20150731-183158582

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Abstract

Light top superpartners play a key role in stabilizing the electroweak scale in supersymmetric theories. For R-parity conserved supersymmetric models, traditional searches are not sensitive to the compressed regions. In this Letter, we propose a new method targeting this region, with top squark and neutralino mass splitting ranging from m_(t˜)−m_χ ≳ m_t to about 20 GeV. In particular, we focus on the signal process in which a pair of top squarks are produced in association with a hard jet, and we define a new observable RM whose distribution has a peak in this compressed region. The position of the peak is closely correlated with m_(t˜). We show that for the 13 TeV LHC with a luminosity of 3000  fb^(−1), this analysis can extend the reach of the top squark in the compressed region to m_(t˜) around 800 GeV.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevLett.115.181602DOIArticle
https://arxiv.org/abs/1506.00653arXivDiscussion Paper
Alternate Title:Opening up the compressed region of stop searches at 13 TeV LHC
Additional Information:© 2015 American Physical Society. (Received 9 June 2015; revised manuscript received 5 October 2015; published 29 October 2015). We would like to thank Clifford Cheung, Lance Dixon, David Kosower, Matthew Low, Yue Zhang, and Fei Gao for the useful discussions. H. A. is supported by the Walter Burke Institute at Caltech and by DOE Grant No. DE-SC0011632. L.-T. W. is supported by DOE Grant No. DE-SC0003930.
Group:Walter Burke Institute for Theoretical Physics
Funders:
Funding AgencyGrant Number
Walter Burke Institute for Theoretical Physics, CaltechUNSPECIFIED
Department of Energy (DOE)DE-SC0011632
Department of Energy (DOE)DE-SC0003930
Other Numbering System:
Other Numbering System NameOther Numbering System ID
CALT-TH2015-028
Issue or Number:18
Classification Code:PACS numbers: 11.30.Pb, 14.80.Ly, 12.15.-y
Record Number:CaltechAUTHORS:20150731-183158582
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20150731-183158582
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:59124
Collection:CaltechAUTHORS
Deposited By: Joy Painter
Deposited On:06 Aug 2015 18:41
Last Modified:03 Oct 2019 08:43

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