Change search
ReferencesLink to record
Permanent link

Direct link
Search for stable hadronising squarks and gluinos with the ATLAS experiment at the LHC
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
KTH, School of Engineering Sciences (SCI), Physics, Particle and Astroparticle Physics.
University of Chicago.ORCID iD: 0000-0002-8913-0981
Show others and affiliations
Number of Authors: 3016
2011 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 701, no 1, 1-19 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2011. Vol. 701, no 1, 1-19 p.
Keyword [en]
Supersymmetry, Long-lived particle, R-hadron, Limit
National Category
Subatomic Physics
URN: urn:nbn:se:kth:diva-37330DOI: 10.1016/j.physletb.2011.05.010ISI: 000292719700001OAI: diva2:433233
Swedish Research Council
QC 20110809. Antal författare: 3016.Available from: 2011-08-09 Created: 2011-08-09 Last updated: 2012-02-14Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Grahn, Karl-JohanLund-Jensen, BengtStrandberg, JonasLafaye, Remi
By organisation
Particle and Astroparticle Physics
In the same journal
Physics Letters B
Subatomic Physics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 27812 hits
ReferencesLink to record
Permanent link

Direct link