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Measurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at $\sqrt{s_{NN}}$= 2.76 TeV with the ATLAS detector

2013-02-26Journal article Open access
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dc.contributor.authorATLAS collaboration (2864 authors)
dc.contributor.authorAguilar-Saavedra, Juan Antonio
dc.contributor.authorAnjos, Nuno
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.authorDo Valle Wemans, André
dc.contributor.authorFiolhais, Miguel
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.authorOliveira, Miguel Alfonso
dc.contributor.authorOnofre, António
dc.contributor.authorPalma, Alberto
dc.contributor.authorPina, João Antonio
dc.contributor.authorPinto, Belmiro
dc.contributor.authorSantos, Helena
dc.contributor.authorSaraiva, João
dc.contributor.authorSilva, José
dc.contributor.authorVeloso, Filipe
dc.contributor.authorWolters, Helmut
dc.date.accessioned2019-02-03T20:46:00Z
dc.date.available2019-02-03T20:46:00Z
dc.date.issued2013-02-26
dc.date.updated2019-02-03T20:46:00Z
dc.description.abstractMeasurements of inclusive jet suppression in heavy ion collisions at the LHC provide direct sensitivity to the physics of jet quenching. In a sample of lead-lead collisions at $\sqrt{s_{NN}}$=2.76 TeV corresponding to an integrated luminosity of approximately 7 @mb^-^1, ATLAS has measured jets with a calorimeter system over the pseudorapidity interval |@h|<2.1 and over the transverse momentum range 38<p_T<210 GeV. Jets were reconstructed using the anti-k_t algorithm with values for the distance parameter that determines the nominal jet radius of R=0.2, 0.3, 0.4 and 0.5. The centrality dependence of the jet yield is characterized by the jet ''central-to-peripheral ratio,'' R_C_P. Jet production is found to be suppressed by approximately a factor of two in the 10% most central collisions relative to peripheral collisions. R_C_P varies smoothly with centrality as characterized by the number of participating nucleons. The observed suppression is only weakly dependent on jet radius and transverse momentum. These results provide the first direct measurement of inclusive jet suppression in heavy ion collisions and complement previous measurements of dijet transverse energy imbalance at the LHC.
dc.description.versionPeer Reviewed
dc.identifierPhys.Lett. B719 (2013) 220-241; DOI 10.1016/j.physletb.2013.01.024
dc.identifier.urihttp://dx.doi.org/10.1016/j.physletb.2013.01.024
dc.identifier.urihttp://hdl.handle.net/10400.26/26244
dc.language.isoeng
dc.titleMeasurement of the jet radius and transverse momentum dependence of inclusive jet suppression in lead-lead collisions at $\sqrt{s_{NN}}$= 2.76 TeV with the ATLAS detector
dc.typejournal article
dspace.entity.typePublication
rcaap.rightsopenAccesspt
rcaap.typearticle

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