Measuring the SUSY breaking scale at the LHC in the slepton NLSP scenario of GMSB models

, , , and

Published 29 January 2001 • Published under licence by IOP Publishing Ltd
, , Citation Sandro Ambrosanio et al JHEP01(2001)014 DOI 10.1088/1126-6708/2001/01/014

Download Article PDF

Article metrics

250 Total downloads

Share this article

Author affiliations

1 CERN, Theory Division, CH-1211 Geneva 23, Switzerland

2 INFN, Sezione di Roma I, Roma, Italy

3 Dipartimento di Fisica, Università ``La Sapienza'', p.le Aldo Moro 2, I-00185 Roma, Italy

4 INFN, Sezione di Pavia, via Bassi 6, I-27100 Pavia, Italy

5 CERN, EP Division, CH-1211 Geneva 23, Switzerland

6 Dipartimento di Fisica Nucleare e Teorica, Università di Pavia, via Bassi 6, I-27100 Pavia, Italy

Dates

  1. Received 23 October 2000
  2. Accepted 12 January 2001
  3. Published

Buy this article in print

1126-6708/2001/01/014

Abstract

We report a study on the measurement of the SUSY breaking scale √F in the framework of gauge-mediated supersymmetry breaking (GMSB) models at the LHC. The work is focused on the GMSB scenario where a stau is the next-to-lightest SUSY particle (NLSP) and decays into a gravitino with lifetime cτNLSP in the range 0.5 m to 1 km. We study the identification of long-lived sleptons using the momentum and time of flight measurements in the muon chambers of the ATLAS experiment. A realistic evaluation of the statistical and systematic uncertainties on the measurement of the slepton mass and lifetime is performed, based on a detailed simulation of the detector response. Accessible range and precision on √F achievable with a counting method are assessed. Many features of our analysis can be extended to the study of different theoretical frameworks with similar signatures at the LHC.

Export citation and abstract BibTeX RIS

Previous article in issue
Next article in issue
10.1088/1126-6708/2001/01/014