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dc.contributor.authorCMS Collaboration
Adair, A.
Boulahouache, C.
Ecklund, K.M.
Geurts, F.J.M.
Padley, B.P.
Redjimi, R.
Roberts, J.
Zabel, J.
dc.date.accessioned 2015-07-16T16:20:21Z
dc.date.available 2015-07-16T16:20:21Z
dc.date.issued 2012
dc.identifier.citation CMS Collaboration, Adair, A., Boulahouache, C., et al.. "Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at √s=7 TeV." Journal of High Energy Physics, 2012, no. 172 (2012) Springer: http://dx.doi.org/10.1007/JHEP11(2012)172.
dc.identifier.urihttps://hdl.handle.net/1911/81033
dc.description.abstract A search is performed for long-lived neutral particles decaying into a photon and invisible particles. An example of such a signature is the decay of the lightest neutralino with nonzero lifetime into a gravitino and a photon in gauge-mediated supersymmetry, with the neutralino as the next-to-lightest supersymmetric particle and the gravitino as the lightest. The search uses events containing photons, missing transverse energy, and jets. The impact parameter of the photon relative to the beam-beam collision point can be reconstructed using converted photons. The method is sensitive to lifetimes of the order of 0.1 to 1 ns. The data sample corresponds to an integrated luminosity of 2.23 fb−1 in pp collisions at √s=7 TeV, recorded in the first part of 2011 by the CMS experiment at the LHC. Cross-section limits are presented on pair production for such particles, each of which decays into a photon and invisible particles. The observed 95% confidence level limits vary between 0.11 and 0.21 pb, depending on the neutral particle lifetime.
dc.language.iso eng
dc.publisher Springer
dc.rights JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.title Search for new physics with long-lived particles decaying to photons and missing energy in pp collisions at √s=7 TeV
dc.type Journal article
dc.citation.journalTitle Journal of High Energy Physics
dc.subject.keywordHadron-Hadron Scattering
dc.citation.volumeNumber 2012
dc.citation.issueNumber 172
dc.type.dcmi Text
dc.identifier.doihttp://dx.doi.org/10.1007/JHEP11(2012)172
dc.type.publication publisher version


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JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0
Except where otherwise noted, this item's license is described as JHEP is an open-access journal funded by SCOAP3 and licensed under CC BY 4.0