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.

Search for microscopic black hole signatures at the Large Hadron Collider / V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., J., H., S., H., C., H., M., H., N., H., J., H., M., J., G., K., W., K., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 697:5(2011), pp. 434-453. [10.1016/j.physletb.2011.02.032]

Search for microscopic black hole signatures at the Large Hadron Collider

BARONE, Luciano Maria;DEL RE, Daniele;LONGO, Egidio;ORGANTINI, Giovanni;PARAMATTI, Riccardo;RAHATLOU, SHAHRAM;TRACZYK, PIOTR WOJCIECH;SANTANASTASIO, FRANCESCO;
2011

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.
2011
physics; black holes; cms; extra dimensions
01 Pubblicazione su rivista::01a Articolo in rivista
Search for microscopic black hole signatures at the Large Hadron Collider / V., K., A. M., S., A., T., W., A., T., B., M., D., J., E., C., F., M., F., R., F., V. M., G., J., H., S., H., C., H., M., H., N., H., J., H., M., J., G., K., W., K., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 697:5(2011), pp. 434-453. [10.1016/j.physletb.2011.02.032]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/385016
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