Search for microscopic black holes and string balls in final states with leptons and jets with the ATLAS detector at root s=8 TeV

Journal article

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 √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.

Authors: Aad, G; Abbott, B; Abdallah, J; Issever, C; Collaboration, ATLAS

• Publication status: Published
• Peer review status: Peer reviewed
• Publisher: Springer Berlin Heidelberg
• Journal: Journal of High Energy Physics
• Volume: 2014
• Issue: 8
• Publication date: 2014-08-18
• Acceptance date: 2014-07-23
• DOI: 10.1007/JHEP08(2014)103
• EISSN: 1029-8479
• ISSN: 1029-8479
• Keywords: hadron-hadron scattering; SBTMR