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A measurement of material in the ATLAS tracker using secondary hadronic interactions in 7 TeV pp collisions

2016-11-30Journal article Open access
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dc.contributor.authorATLAS collaboration (2859 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.authorCantrill, Robert
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.authorLopes, Lourenco
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.accessioned2019-02-04T11:10:11Z
dc.date.available2019-02-04T11:10:11Z
dc.date.issued2016-11-30
dc.date.updated2019-02-04T11:10:11Z
dc.description.abstractKnowledge of the material in the ATLAS inner tracking detector is crucial in understanding the reconstruction of charged-particle tracks, the performance of algorithms that identify jets containing b-hadrons and is also essential to reduce background in searches for exotic particles that can decay within the inner detector volume. Interactions of primary hadrons produced in pp collisions with the material in the inner detector are used to map the location and amount of this material. The hadronic interactions of primary particles may result in secondary vertices, which in this analysis are reconstructed by an inclusive vertex-finding algorithm. Data were collected using minimum-bias triggers by the ATLAS detector operating at the LHC during 2010 at centre-of-mass energy √s = 7 TeV, and correspond to an integrated luminosity of 19 nb(−)(1). Kinematic properties of these secondary vertices are used to study the validity of the modelling of hadronic interactions in simulation. Secondary-vertex yields are compared between data and simulation over a volume of about 0.7 m(3) around the interaction point, and agreement is found within overall uncertainties.
dc.description.versionPeer Reviewed
dc.identifierJINST 11 (2016) P11020; DOI 10.1088/1748-0221/11/11/P11020
dc.identifier.urihttp://dx.doi.org/10.1088/1748-0221/11/11/P11020
dc.identifier.urihttp://hdl.handle.net/10400.26/27183
dc.language.isoeng
dc.titleA measurement of material in the ATLAS tracker using secondary hadronic interactions in 7 TeV pp collisions
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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