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

An, Haipeng; Wang, Lian-Tao

doi:10.1103/PhysRevLett.115.181602

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

Journal Article · Thu Oct 29 00:00:00 EDT 2015 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.115.181602· OSTI ID:1599721

An, Haipeng ^[1]; Wang, Lian-Tao ^[2]

California Inst. of Technology (CalTech), Pasadena, CA (United States)
Univ. of Chicago, IL (United States)

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 R_M whose distribution has a peak in this compressed region. The position of the peak is closely correlated with m_t. Further, 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.

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Research Organization:: California Institute of Technology (CalTech), Pasadena, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), High Energy Physics (HEP)

Grant/Contract Number:: SC0011632; SC0003930

OSTI ID:: 1599721

Alternate ID(s):: OSTI ID: 1224667

Journal Information:: Physical Review Letters, Vol. 115, Issue 18; ISSN 0031-9007

Publisher:: American Physical Society (APS)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 42 works

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