In situ calibration of large-radius jet energy and mass in 13 TeV proton-proton collisions with the ATLAS detector [Elektronisk resurs]
- E-artikel/E-kapitelEngelska2019
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Publicerad:SPRINGER,Publicerad:2019
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LIBRIS-ID:ktfg49pchwf6dr3h
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http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-378376uri
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urn:nbn:se:uu:diva-378376urn
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10.1140/epjc/s10052-019-6632-8doi
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<p>For complete list of authors see http://dx.doi.org/10.1140/epjc/s10052-019-6632-8</p>
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Published
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Vetenskapsrådet
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EU, Europeiska forskningsrådet
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EU, Horisont 2020
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Wallenbergstiftelserna
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gratis
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The response of the ATLAS detector to large-radius jets is measured in situ using 36.2 fb(-1) of root s = 13TeV proton-proton collisions provided by the LHC and recorded by the ATLAS experiment during 2015 and 2016. The jet energy scale is measured in events where the jet recoils against a reference object, which can be either a calibrated photon, a reconstructed Z boson, or a system of well-measured small-radius jets. The jet energy resolution and a calibration of forward jets are derived using dijet balance measurements. The jet mass response is measured with two methods: using mass peaks formed by W bosons and top quarks with large transverse momenta and by comparing the jet mass measured using the energy deposited in the calorimeter with that using the momenta of charged-particle tracks. The transverse momentum and mass responses in simulations are found to be about 2-3% higher than in data. This difference is adjusted for with a correction factor. The results of the different methods are combined to yield a calibration over a large range of transverse momenta (p(T)). The precision of the relative jet energy scale is 1-2% for 200 GeV < p(T) < TeV, while that of the mass scale is 2-10%. The ratio of the energy resolutions in data and simulation is measured to a precision of 10-15% over the same p(T) range.
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Asimakopoulou, Eleni M.
(författare)
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Bergeås Kuutmann, Elin,1980-
(författare)
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Bokan, Petar
(författare)
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Brenner, Richard
(författare)
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Ekelöf, Tord
(författare)
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Ellert, Mattias
(författare)
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Ferrari, Arnaud,1973-
(författare)
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Gradin, P. O. Joakim
(författare)
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Isacson, Max
(författare)
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Mårtensson, Mikael
(författare)
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Öhman, Henrik
(författare)
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Sales De Bruin, Pedro
(författare)
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Zwalinski, L.
(författare)
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Uppsala universitetTeknisk-naturvetenskapliga vetenskapsområdet
(utgivare)
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Del av/supplement till:channel record
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Ingår i:VärdpublikationEuropean Physical Journal C79:21434-6044
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