Bounds on Large Extra Dimensions from the Simulation of
Black Hole Events at the LHC

 

Dr Shaoqi Hou
Huazhong University of Science and Technology
 

29 Nov 2016 (Tuesday)
2:00 pm
IAS4042, 4/F, Lo Ka Chung Building, Lee Shau Kee Campus, HKUST

Large extra dimensions were originally proposed to solve the hierarchy problem of the Standard Model of elementary particle physics. The presence of large extra dimensions dilutes gravity, lowering the Planck scale. If large extra dimensions exist and they are large enough, the Planck scale may be as low as a few TeV’s, so that the hierarchy problem is solved. A smaller Planck scale will bring about numerous phenomenological consequences; in particular, microscopic black holes may be produced in high-energy particle collisions at this energy scale. The decay of black holes, via the Hawking effect, into elementary particles enables the detection of the black hole events, which can be used to infer the existence of large extra dimensions. In this talk, the speaker will present the simulation of microscopic black hole formation at the Large Hadron Collider with the black hole event generator CATFISH, and comparison on the simulation results with the experimental data published by the Compact Muon Solenoid collaboration in 2013 at a center of mass energy of 8 TeV. The absence of observed black hole events in the experimental data allows researchers to set lower bounds on the Planck scale and black hole masses for a number (3 - 6) of large extra dimensions. He will also introduce the physics of microscopic black holes and present the various bounds related to the black hole physics.