4-8 August 2015
America/Detroit timezone

Searches for Micro Black Holes and String Balls with the ATLAS Detector During Run 1

6 Aug 2015, 17:00
15m
Vandenberg (Michigan League)

Vandenberg

Michigan League

BSM Collider BSM Physics

Speaker

Nathan Rogers Bernard (University of Massachusetts (US))

Description

Models postulating extra spatial dimensions, in which only the gravitational field propagates, address the long-standing hierarchy between the electroweak scale and the gravitational (Planck) scale. Most of these models allow the production of non-perturbative gravitational states, such as micro black holes and string balls, at Large Hadron Collider collision energies. Searches for such states are presented in a variety of final states that include high transverse momentum jets and/or leptons, using 20.3 fb$^{-1}$ of proton-proton collision data recorded by the ATLAS detector at $\sqrt{s}$=8 TeV. No excess of events beyond Standard Model expectations is observed in any of the channels and upper limits on the visible cross-sections for non-Standard Model production are set for final states with large scalar sum of jet and lepton transverse momenta. Using a wide variety of models for black hole and string ball production and decay, exclusion contours are determined as a function of the production mass threshold and the fundamental gravitational scale.
Oral or Poster Presentation Oral

Primary author

Nathan Rogers Bernard (University of Massachusetts (US))

Presentation Materials