Scientific article
Open access

Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC

ContributorsATLAS Collaboration
Published inPhysics letters. B, vol. 701, no. 1, p. 1-19
Publication date2011

Hitherto unobserved long-lived massive particles with electric and/or colour charge are predicted by a range of theories which extend the Standard Model. In this Letter a search is performed at the ATLAS experiment for slow-moving charged particles produced in proton–proton collisions at 7 TeV centre-of-mass energy at the LHC, using a data-set corresponding to an integrated luminosity of 34 pb−1. No deviations from Standard Model expectations are found. This result is interpreted in a framework of supersymmetry models in which coloured sparticles can hadronise into long-lived bound hadronic states, termed R-hadrons, and 95% CL limits are set on the production cross-sections of squarks and gluinos. The influence of R-hadron interactions in matter was studied using a number of different models, and lower mass limits for stable sbottoms and stops are found to be 294 and 309 GeV respectively. The lower mass limit for a stable gluino lies in the range from 562 to 586 GeV depending on the model assumed. Each of these constraints is the most stringent to date.

  • Supersymmetry
  • Long-lived particle
  • R-hadron
  • Limit
Citation (ISO format)
ATLAS Collaboration. Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC. In: Physics letters. B, 2011, vol. 701, n° 1, p. 1–19. doi: 10.1016/j.physletb.2011.05.010
Main files (1)
Article (Published version)
ISSN of the journal0370-2693

Technical informations

Creation10/24/2014 3:39:00 PM
First validation10/24/2014 3:39:00 PM
Update time03/14/2023 10:09:36 PM
Status update03/14/2023 10:09:36 PM
Last indexation01/16/2024 12:09:49 PM
All rights reserved by Archive ouverte UNIGE and the University of GenevaunigeBlack