Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at s $$ \sqrt{s} $$ = 8 TeV
A search for an excess of events with multiple high transverse momentum objects including charged leptons and jets is presented, using 20.3 fb-1 of proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2012 at a centre-of-mass energy of $$ \sqrt{s} $$ = 8 TeV. No excess of events beyond Standard Model expectations is observed. Using extra-dimensional models for black hole and string ball production and decay, exclusion contours are determined as a function of the mass threshold for production and the fundamental gravity scale for two, four and six extra dimensions. For six extra dimensions, mass thresholds of 4.8-6.2 TeV are excluded at 95 % confidence level, depending on the fundamental gravity scale and model assumptions. Upper limits on the fiducial cross-sections for non-Standard Model production of these final states are set.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- The ATLAS collaboration
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1523902
- Journal Information:
- Journal of High Energy Physics (Online), Vol. 2014, Issue 8; ISSN 1029-8479
- Publisher:
- Springer BerlinCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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