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Search for signatures of extra dimensions in the diphoton mass spectrum at the Large Hadron Collider

2011-12Journal article Open access
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dc.contributor.authorCMS collaboration (2256 authors)
dc.contributor.authorHollar, Jonathan
dc.contributor.authorAlmeida, Nuno
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorFerreira Parracho, Pedro Guilherme
dc.contributor.authorGallinaro, Michele
dc.contributor.authorMusella, Pasquale
dc.contributor.authorNayak, Aruna
dc.contributor.authorPela, Joao
dc.contributor.authorRibeiro, Pedro Quinaz
dc.contributor.authorSeixas, Joao
dc.contributor.authorVarela, Joao
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorRodrigues Antunes, Joao
dc.contributor.authorSilva, Pedro
dc.contributor.authorLeonardo, Nuno
dc.date.accessioned2019-02-03T18:27:01Z
dc.date.available2019-02-03T18:27:01Z
dc.date.issued2011-12
dc.date.updated2019-02-03T18:26:52Z
dc.description.abstractA search for signatures of extra 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 sqrt(s) = 7 TeV corresponding to an integrated luminosity of 2.2 inverse femtobarns. 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.
dc.description.versionPeer Reviewed
dc.identifierPhys.Rev.Lett. 108 (2012) 111801; DOI 10.1103/PhysRevLett.108.111801
dc.identifier.urihttp://dx.doi.org/10.1103/PhysRevLett.108.111801
dc.identifier.urihttp://hdl.handle.net/10400.26/26066
dc.language.isoeng
dc.titleSearch for signatures of extra dimensions in the diphoton mass spectrum at the Large Hadron Collider
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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