Measurements of b-jet tagging efficiency with the ATLAS detector using t(t)over-bar events at root s=13 TeV
dc.WoS.categories | Physics, Particles & Fields | en_US |
dc.authorid | 0000-0001-5050-8441 | en_US |
dc.contributor.author | Çetin, Serkant Ali | |
dc.date.accessioned | 2020-06-18T09:11:56Z | |
dc.date.available | 2020-06-18T09:11:56Z | |
dc.date.issued | 2018-08-16 | |
dc.department | Fakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Enerji Sistemleri Mühendisliği Bölümü | en_US |
dc.description.abstract | The efficiency to identify jets containing b-hadrons (b-jets) is measured using a high purity sample of dileptonic top quark-antiquark pairs (t (t) over bar) selected from the 36.1 fb(-1) of data collected by the ATLAS detector in 2015 and 2016 from proton-proton collisions produced by the Large Hadron Collider at a centre-of-mass energy root s = 13 TeV. Two methods are used to extract the efficiency from t (t) over bar events, a combinatorial likelihood approach and a tag-and-probe method. A boosted decision tree, not using b-tagging information, is used to select events in which two b-jets are present, which reduces the dominant uncertainty in the modelling of the flavour of the jets. The efficiency is extracted for jets in a transverse momentum range from 20 to 300 GeV, with data-to-simulation scale factors calculated by comparing the efficiency measured using collision data to that predicted by the simulation. The two methods give compatible results, and achieve a similar level of precision, measuring data-to-simulation scale factors close to unity with uncertainties ranging from 2% to 12% depending on the jet transverse momentum. | en_US |
dc.fullTextLevel | Full Text | en_US |
dc.identifier.doi | 10.1007/JHEP08(2018)089 | en_US |
dc.identifier.issn | 1029-8479 | |
dc.identifier.scopus | 2-s2.0-85051719783 | en_US |
dc.identifier.uri | https://hdl.handle.net/11411/2248 | |
dc.identifier.uri | https://doi.org/10.1007/JHEP08(2018)089 | |
dc.identifier.wos | WOS:000442113300001 | en_US |
dc.identifier.wosquality | Q1 | en_US |
dc.indekslendigikaynak | Web of Science | en_US |
dc.indekslendigikaynak | Scopus | en_US |
dc.issue | 8 | en_US |
dc.language.iso | en | en_US |
dc.national | International | en_US |
dc.numberofauthors | 500+ | en_US |
dc.publisher | SPRINGER | en_US |
dc.relation.ispartof | JOURNAL OF HIGH ENERGY PHYSICS | en_US |
dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı | en_US |
dc.rights | info:eu-repo/semantics/openAccess | en_US |
dc.subject | Hadron-Hadron scattering (experiments) | en_US |
dc.title | Measurements of b-jet tagging efficiency with the ATLAS detector using t(t)over-bar events at root s=13 TeV | en_US |
dc.type | Article | en_US |