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Search for supersymmetry in final states with missing transverse momentum and multiple $b$-jets in proton-proton collisions at $ \sqrt{s}=13 $ TeV with the ATLAS detector

dc.contributor.authorATLAS collaboration (2874 authors)
dc.contributor.authorAguilar-Saavedra, Juan Antonio
dc.contributor.authorAmor Dos Santos, Susana Patricia
dc.contributor.authorAnjos, Nuno
dc.contributor.authorAraque, Juan Pedro
dc.contributor.authorCarvalho, João
dc.contributor.authorCastro, Nuno Filipe
dc.contributor.authorConde Muiño, Patricia
dc.contributor.authorDa Cunha Sargedas De Sousa, Mario Jose
dc.contributor.authorFiolhais, Miguel
dc.contributor.authorGalhardo, Bruno
dc.contributor.authorGomes, Agostinho
dc.contributor.authorGonçalo, Ricardo
dc.contributor.authorJorge, Pedro
dc.contributor.authorMachado Miguens, Joana
dc.contributor.authorMaio, Amélia
dc.contributor.authorManeira, José
dc.contributor.authorOleiro Seabra, Luis Filipe
dc.contributor.authorOnofre, António
dc.contributor.authorPedro, Rute
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, João
dc.contributor.authorSilva, José
dc.contributor.authorTavares Delgado, Ademar
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-05T15:26:05Z
dc.date.available2019-02-05T15:26:05Z
dc.date.issued2018-06-21
dc.date.updated2019-02-05T15:26:05Z
dc.description.abstractA search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino $ \left({\tilde{\chi}}_1^0\right) $ is reported. It uses LHC proton-proton collision data at a centre-of-mass energy $ \sqrt{s}=13 $ TeV with an integrated luminosity of 36.1 fb$^{−1}$ collected with the ATLAS detector in 2015 and 2016. The search is performed in events containing large missing transverse momentum and several energetic jets, at least three of which must be identified as originating from b-quarks. To increase the sensitivity, the sample is divided into subsamples based on the presence or absence of electrons or muons. No excess is found above the predicted background. For $ {\tilde{\chi}}_1^0 $ masses below approximately 300 GeV, gluino masses of less than 1.97 (1.92) TeV are excluded at 95% confidence level in simplified models involving the pair production of gluinos that decay via top (bottom) squarks. An interpretation of the limits in terms of the branching ratios of the gluinos into third-generation squarks is also provided. These results improve upon the exclusion limits obtained with the 3.2 fb$^{−1}$ of data collected in 2015.
dc.description.versionPeer Reviewed
dc.identifierJHEP 1806 (2018) 107; DOI 10.1007/JHEP06(2018)107
dc.identifier.urihttp://dx.doi.org/10.1007/JHEP06(2018)107
dc.identifier.urihttp://hdl.handle.net/10400.26/27494
dc.language.isoeng
dc.titleSearch for supersymmetry in final states with missing transverse momentum and multiple $b$-jets in proton-proton collisions at $ \sqrt{s}=13 $ TeV with the ATLAS detector
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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