期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 8, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP08(2018)089
关键词
Hadron-Hadron scattering (experiments)
资金
- ANPCyT, Argentina
- YerPhI, Armenia
- ARC, Australia
- BMWFW, Austria
- FWF, Austria
- ANAS, Azerbaijan
- SSTC, Belarus
- CNPq, Brazil
- FAPESP, Brazil
- NSERC, Canada
- NRC, Canada
- CFI, Canada
- CERN
- CONICYT, Chile
- CAS, China
- MOST, China
- NSFC, China
- COLCIENCIAS, Colombia
- MSMT CR, Czech Republic
- MPO CR, Czech Republic
- VSC CR, Czech Republic
- DNRF, Denmark
- DNSRC, Denmark
- IN2P3-CNRS, France
- CEA-DRF/IRFU, France
- SRNSFG, Georgia
- BMBF, Germany
- HGF, Germany
- MPG, Germany
- GSRT, Greece
- RGC, China
- Hong Kong SAR, China
- ISF, Israel
- I-CORE, Israel
- Benoziyo Center, Israel
- INFN, Italy
- MEXT, Japan
- JSPS, Japan
- CNRST, Morocco
- NWO, Netherlands
- RCN, Norway
- MNiSW, Poland
- NCN, Poland
- FCT, Portugal
- MNE/IFA, Romania
- MES of Russia, Russian Federation
- NRC KI, Russian Federation
- JINR
- MESTD, Serbia
- MSSR, Slovakia
- ARRS, Slovenia
- MIZS, Slovenia
- DST/NRF, South Africa
- MINECO, Spain
- SRC, Sweden
- Wallenberg Foundation, Sweden
- SERI, Switzerland
- SNSF, Switzerland
- Cantons of Bern and Geneva, Switzerland
- MOST, Taiwan
- TAEK, Turkey
- STFC, United Kingdom
- DOE, United States of America
- NSF, United States of America
- BCKDF
- Canada Council
- CANARIE
- CRC
- Compute Canada
- FQRNT
- Ontario Innovation Trust, Canada
- EPLANET
- ERC
- ERDF
- FP7
- Horizon 2020 and Marie Sklodowska-Curie Actions
- European Union
- Investissements d'Avenir Labex and Idex, France
- ANR, France
- Region Auvergne, France
- Fondation Partager le Savoir, France
- DFG, Germany
- AvH Foundation, Germany
- Herakleitos
- Thales
- Aristeia programmes EU-ESF
- Greek NSRF
- BSF, Israel
- GIF, Israel
- Minerva, Israel
- BRF, Norway
- CERCA Programme Generalitat de Catalunya, Spain
- Generalitat Valenciana, Spain
- Royal Society and Leverhulme Trust, United Kingdom
- STFC [ST/N000447/1, ST/K001329/1, ST/P002439/1, ST/H001158/2, ST/N000420/1, ST/M000753/1, ST/N000307/1, ST/J005533/1, ST/J004804/1, ST/L006162/1, ST/L003449/1] Funding Source: UKRI
- Division Of Physics
- Direct For Mathematical & Physical Scien [1624739] Funding Source: National Science Foundation
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.
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