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순수물리이론 연구단
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Leptonic mono-top from single stop production at the LHC

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Title
Leptonic mono-top from single stop production at the LHC
Author(s)
Guang Hua Duan; Ken-ichi Hikasa; Lei Wu; Jin Min Yang; Mengchao Zhang
Publication Date
2017-03
Journal
JOURNAL OF HIGH ENERGY PHYSICS, v.2017, no.3, pp.091 -
Publisher
SPRINGER
Abstract
Top squark (stop) can be produced via QCD interaction but also the electroweak interaction at the LHC. In this paper, we investigate the observability of the associated production of stop and chargino, pp→ t˜ 1χ˜ 1 ¯, in compressed electroweakino scenarios at 14 TeV LHC. Due to small mass splitting between the lightest neutralino (χ˜10) and chargino (χ˜1−), the single stop production can give the mono-top signature through the stop decay t˜1→tχ˜10. We analyze the leptonic mono-top channel of the single stop production and propose a lab-frame observable cos θbℓ to reduce the SM backgrounds. We find that such leptonic mono-top events from the single stop production can be probed at 2σ level at the HL-LHC if mt˜1<760 GeV and mχ˜10<150 GeV. Given a discovery of the stop and a measurement of the single stop production cross section, the stop mixing angle can also be determined from the single stop production at the HL-LHC. © 2017, The Author(s)
URI
https://pr.ibs.re.kr/handle/8788114/3437
ISSN
1029-8479
Appears in Collections:
Center for Fundamental Theory(순수물리이론 연구단) > Journal Papers (저널논문)
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