Single top squark production as a probe of natural supersymmetry at the LHC

Ken-ichi Hikasa, Jinmian Li, Lei Wu, and Jin Min Yang
Phys. Rev. D 93, 035003 – Published 4 February 2016

Abstract

Light top squarks (stops) and light higgsinos are the key features of natural supersymmetry (SUSY), where the higgsinos χ˜1± and χ˜1,20 are nearly degenerate and act as the missing transverse energy (ET) at the LHC. Besides the pair production via strong interaction, the stop can be produced via the electroweak interaction. The determination of the electroweak properties of the stop is an essential task for the LHC and future colliders. So, in this paper, we investigate the single stop (t˜1) production ppt˜1+ET via the electroweak interaction in natural SUSY at the LHC, which gives the monotop signature t+ET from t˜1tχ˜1,20 or the monobottom signature b+ET from t˜1bχ˜1+. We perform Monte Carlo simulations for these signatures and obtain the observations: (1) The signal b+ET has a better sensitivity than t+ET for probing natural SUSY; (2) the parameter region with a higgsino mass 100GeVμ225GeV and stop mass mt˜1620GeV can be probed through such single stop production with S/B>3 and 4%S/B19% at the 14 TeV LHC with an integrated luminosity of 3000fb1.

  • Figure
  • Figure
  • Figure
  • Figure
  • Received 1 June 2015

DOI:https://doi.org/10.1103/PhysRevD.93.035003

© 2016 American Physical Society

Physics Subject Headings (PhySH)

  1. Research Areas
  1. Physical Systems
Particles & Fields

Authors & Affiliations

Ken-ichi Hikasa1,*, Jinmian Li2,†, Lei Wu3,‡, and Jin Min Yang4,1,§

  • 1Department of Physics, Tohoku University, Sendai 980-8578, Japan
  • 2ARC Centre of Excellence for Particle Physics at the Terascale, Department of Physics, University of Adelaide, Adelaide, South Australia 5005, Australia
  • 3ARC Centre of Excellence for Particle Physics at the Terascale, School of Physics, The University of Sydney, Sydney, New South Wales 2006, Australia
  • 4Institute of Theoretical Physics, Academia Sinica, Beijing 100190, People’s Republic of China

  • *hikasa@phys.tohoku.ac.jp
  • jinmian.li@adelaide.edu.au
  • leiwu@physics.usyd.edu.au
  • §jmyang@itp.ac.cn

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 93, Iss. 3 — 1 February 2016

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×