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Measurement of the ratio of inclusive jet cross sections using the anti- k T algorithm with radius parameters R = 0.5  and 0.7 in  pp collisions at  √ s = 7 TeV
Journal article   Open access   Peer reviewed

Measurement of the ratio of inclusive jet cross sections using the anti- k T algorithm with radius parameters R = 0.5 and 0.7 in pp collisions at √ s = 7 TeV

CMS Collaboration
Physical review D, Vol.90(7), 072006
10/16/2014
DOI: 10.1103/PhysRevD.90.072006
url
https://doi.org/10.1103/PhysRevD.90.072006View
Published (Version of record) Open Access

Abstract

Measurements of the inclusive jet cross section with the anti- k T clustering algorithm are presented for two radius parameters, R = 0.5 and 0.7. They are based on data from LHC proton-proton collisions at √ s = 7     TeV corresponding to an integrated luminosity of 5.0     fb − 1 collected with the CMS detector in 2011. The ratio of these two measurements is obtained as a function of the rapidity and transverse momentum of the jets. Significant discrepancies are found comparing the data to leading-order simulations and to fixed-order calculations at next-to-leading order, corrected for nonperturbative effects, whereas simulations with next-to-leading-order matrix elements matched to parton showers describe the data best.

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