Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F18%3A00500524" target="_blank" >RIV/68378271:_____/18:00500524 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1007/JHEP08(2018)089" target="_blank" >http://dx.doi.org/10.1007/JHEP08(2018)089</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/JHEP08(2018)089" target="_blank" >10.1007/JHEP08(2018)089</a>
Alternative languages
Result language
angličtina
Original language name
Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV
Original language description
The efficiency to identify jets containing b-hadrons (b-jets) is measured using a high purity sample of dileptonic top quark-antiquark pairs ( tt¯ ) 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 s√=13 TeV. Two methods are used to extract the efficiency from tt¯ 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.n
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10303 - Particles and field physics
Result continuities
Project
<a href="/en/project/LTT17018" target="_blank" >LTT17018: Getting new knowledge of the microworld using the CERN infrastructure</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of High Energy Physics
ISSN
1029-8479
e-ISSN
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Volume of the periodical
2018
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
47
Pages from-to
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UT code for WoS article
000442113300001
EID of the result in the Scopus database
2-s2.0-85051719783