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Search for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at $\sqrt{s} =$ 13 TeV

dc.contributor.authorCMS collaboration (2290 authors)
dc.contributor.authorNayak, Aruna
dc.contributor.authorBargassa, Pedrame
dc.contributor.authorBeirão Da Cruz E Silva, Cristóvão
dc.contributor.authorDi Francesco, Agostino
dc.contributor.authorFaccioli, Pietro
dc.contributor.authorGalinhas, Bruno
dc.contributor.authorGallinaro, Michele
dc.contributor.authorHollar, Jonathan
dc.contributor.authorLeonardo, Nuno
dc.contributor.authorLloret Iglesias, Lara
dc.contributor.authorSeixas, Joao
dc.contributor.authorStrong, Giles
dc.contributor.authorToldaiev, Oleksii
dc.contributor.authorVadruccio, Daniele
dc.contributor.authorVarela, Joao
dc.contributor.authorVischia, Pietro
dc.contributor.authorDavid Tinoco Mendes, Andre
dc.contributor.authorSilva, Pedro
dc.contributor.authorMusella, Pasquale
dc.date.accessioned2019-02-05T16:14:38Z
dc.date.available2019-02-05T16:14:38Z
dc.date.issued2018-08-07
dc.date.updated2019-02-05T16:14:38Z
dc.description.abstractA search is presented for long-lived charged particles that decay within the CMS detector and produce the signature of a disappearing track. A disappearing track is an isolated track with missing hits in the outer layers of the silicon tracker, little or no energy in associated calorimeter deposits, and no associated hits in the muon detectors. This search uses data collected with the CMS detector in 2015 and 2016 from proton-proton collisions at a center-of-mass energy of 13 TeV at the LHC, corresponding to an integrated luminosity of 38.4 fb$^{−1}$. The results of the search are interpreted in the context of the anomaly-mediated supersymmetry breaking model. The data are consistent with the background-only hypothesis. Limits are set on the product of the cross section for direct production of charginos and their branching fraction to a neutralino and a pion, as a function of the chargino mass and lifetime. At 95% confidence level, charginos with masses below 715 (695) GeV are excluded for a lifetime of 3 (7) ns, as are charginos with lifetimes from 0.5 to 60 ns for a mass of 505 GeV. These are the most stringent limits using a disappearing track signature on this signal model for chargino lifetimes above ≈0.7 ns.
dc.description.versionPeer Reviewed
dc.identifierJHEP 1808 (2018) 016 JHEP 08 (2018) 016; DOI 10.1007/JHEP08(2018)016
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP08(2018)016
dc.identifier.urihttp://hdl.handle.net/10400.26/27621
dc.language.isoeng
dc.relationAdvanced Multi-Variate Analysis for New Physics Searches at the LHC
dc.titleSearch for disappearing tracks as a signature of new long-lived particles in proton-proton collisions at $\sqrt{s} =$ 13 TeV
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAdvanced Multi-Variate Analysis for New Physics Searches at the LHC
oaire.awardURIinfo:eu-repo/grantAgreement/EC/H2020/675440/EU
oaire.fundingStreamH2020
project.funder.identifierhttp://doi.org/10.13039/501100008530
project.funder.nameEuropean Commission
rcaap.rightsopenAccesspt
rcaap.typearticle
relation.isProjectOfPublicationd1fe0247-7df8-4eac-ad17-2d56bfcafa24
relation.isProjectOfPublication.latestForDiscoveryd1fe0247-7df8-4eac-ad17-2d56bfcafa24

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