Search for microscopic black hole signatures at the Large Hadron Collider

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/53011

Title:	Search for microscopic black hole signatures at the Large Hadron Collider
Authors:	Khachatryan,V;Sirunyan,AM;Tumasyan,A;Adam,W;Bergauer,T;Dragicevic,M;Ero,J;Fabjan,C;Friedl,M;Fruhwirth,R;Ghete,VM;...etc.
Contributors:	物理學系
Keywords:	DIMENSIONS;LHC
Date:	2011
Issue Date:	2012-06-11 10:53:49 (UTC+8)
Publisher:	國立中央大學
Abstract:	A search for microscopic black hole production and decay in pp collisions at a center-of-mass energy of 7 TeV has been conducted by the CMS Collaboration at the LHC, using a data sample corresponding to an integrated luminosity of 35 pb(-1). Events with large total transverse energy are analyzed for the presence of multiple high-energy jets, leptons, and photons, typical of a signal expected from a microscopic black hole. Good agreement with the standard model backgrounds, dominated by QCD multijet production, is observed for various final-state multiplicities and model-independent limits on new physics in these final states are set. Using simple semi-classical approximation, limits on the minimum black hole mass are derived as well, in the range 3.5-4.5 TeV. These are the first direct limits on black hole production at a particle accelerator. (c) 2011 CERN. Published by Elsevier B.V. All rights reserved.
Relation:	PHYSICS LETTERS B
Appears in Collections:	[Department of Physics] journal & Dissertation

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