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Performance of b-jet identification in the ATLAS experiment
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
Stockholms universitet, Naturvetenskapliga fakulteten, Fysikum. Stockholms universitet, Naturvetenskapliga fakulteten, Oskar Klein-centrum för kosmopartikelfysik (OKC).
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Antal upphovsmän: 28292016 (Engelska)Ingår i: Journal of Instrumentation, ISSN 1748-0221, E-ISSN 1748-0221, Vol. 11, artikel-id P04008Artikel i tidskrift (Refereegranskat) Published
Abstract [en]

The identification of jets containing b hadrons is important for the physics programme of the ATLAS experiment at the Large Hadron Collider. Several algorithms to identify jets containing b hadrons are described, ranging from those based on the reconstruction of an inclusive secondary vertex or the presence of tracks with large impact parameters to combined tagging algorithms making use of multi-variate discriminants. An independent b-tagging algorithm based on the reconstruction of muons inside jets as well as the b-tagging algorithm used in the online trigger are also presented. The b-jet tagging efficiency, the c-jet tagging efficiency and the mistag rate for light flavour jets in data have been measured with a number of complementary methods. The calibration results are presented as scale factors defined as the ratio of the efficiency (or mistag rate) in data to that in simulation. In the case of b jets, where more than one calibration method exists, the results from the various analyses have been combined taking into account the statistical correlation as well as the correlation of the sources of systematic uncertainty.

Ort, förlag, år, upplaga, sidor
2016. Vol. 11, artikel-id P04008
Nyckelord [en]
Large detector systems for particle and astroparticle physics, Large detector-systems performance, Pattern recognition, cluster finding, calibration and fitting methods, Performance of High Energy Physics Detectors
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Fysik
Identifikatorer
URN: urn:nbn:se:su:diva-131565DOI: 10.1088/1748-0221/11/04/P04008ISI: 000375746400027OAI: oai:DiVA.org:su-131565DiVA, id: diva2:944860
Tillgänglig från: 2016-06-30 Skapad: 2016-06-21 Senast uppdaterad: 2019-12-10Bibliografiskt granskad

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Abulaiti, YimingÅkerstedt, HenrikÅsman, BarbroBendtz, KatarinaBertoli, GabrieleBessidskaia Bylund, OlgaBohm, ChristianClément, ChristopheCribbs, Wayne A.Hellman, StenJon-And, KerstinKhandanyan, HovhannesKim, HyeonKlimek, PawelLundberg, OlofMilstead, David A.Moa, TorbjörnMolander, SimonPani, PriscillaPetridis, AndreasPlucinski, PawelRossetti, ValerioShcherbakova, AnnaSilverstein, Samuel B.Sjölin, JörgenStrandberg, SaraTylmad, MajaUghetto, Michaël
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FysikumOskar Klein-centrum för kosmopartikelfysik (OKC)
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