hrvatski jezikClear Cookie - decide language by browser settings

Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider

(CMS Collaboration) Chatrchyan, S.; Brigljević, Vuko; Đurić, Senka; Kadija, Krešo; Luetić, Jelena; Morović, Srećko (2012) Search for Signatures of Extra Dimensions in the Diphoton Mass Spectrum at the Large Hadron Collider. Physical Review Letters, 108 (11). 111801/1-111801/16. ISSN 0031-9007

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.

Download (392kB) | Preview
[img]
Preview
PDF - Accepted Version
Available under License Creative Commons Attribution.

Download (423kB) | Preview

Abstract

A search for signatures of extra spatial dimensions in the diphoton invariant-mass spectrum has been performed with the CMS detector at the LHC. No excess of events above the standard model expectation is observed using a data sample collected in proton-proton collisions at √s=7  TeV corresponding to an integrated luminosity of 2.2  fb-1. In the context of the large-extra-dimensions model, lower limits are set on the effective Planck scale in the range of 2.3–3.8 TeV at the 95% confidence level. These limits are the most restrictive bounds on virtual-graviton exchange to date. The most restrictive lower limits to date are also set on the mass of the first graviton excitation in the Randall-Sundrum model in the range of 0.86–1.84 TeV, for values of the associated coupling parameter between 0.01 and 0.10.

Item Type: Article
Uncontrolled Keywords: photon pair production; hierarchy; gravity; signals
Subjects: NATURAL SCIENCES > Physics
Divisions: Division of Experimental Physics
Projects:
Project titleProject leaderProject codeProject type
Eksperimentalna fizika na LHC energijama[93132] Krešo Kadija098-0982887-2878MZOS
Depositing User: Krešo Kadija
Date Deposited: 16 Sep 2013 15:44
Last Modified: 03 Feb 2016 15:05
URI: http://fulir.irb.hr/id/eprint/618
DOI: 10.1103/PhysRevLett.108.111801

Actions (login required)

View Item View Item

Downloads

Downloads per month over past year