Measurements of b-jet tagging efficiency with the ATLAS detector using t(t)over-bar events at root s=13 TeV
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Final Published version
Author
Aaboud, M.Aad, G.
Abbott, B.
Abdinov, O.
Abeloos, B.
Abhayasinghe, D. K.
Abidi, S. H.
AbouZeid, O. S.
Abraham, N. L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B. S.
Adachi, S.
Adamczyk, L.
Adelman, J.
Adersberger, M.
Adiguzel, A.
Adye, T.
Affolder, A. A.
Afik, Y.
Agheorghiesei, C.
Aguilar-Saavedra, J. A.
Ahmadov, F.
Aielli, G.
Akatsuka, S.
Åkesson, T. P. A.
Akilli, E.
Akimov, A. V.
Alberghi, G. L.
Albert, J.
Albicocco, P.
Alconada Verzini, M. J.
Alderweireldt, S.
Aleksa, M.
Aleksandrov, I. N.
Alexa, C.
Alexander, G.
Alexopoulos, T.
Alhroob, M.
Ali, B.
Alimonti, G.
Alison, J.
Alkire, S. P.
Allaire, C.
Allbrooke, B. M. M.
Allen, B. W.
Allport, P. P.
Aloisio, A.
Alonso, A.
Alonso, F.
Alpigiani, C.
Alshehri, A. A.
Alstaty, M. I.
Alvarez Gonzalez, B.
Álvarez Piqueras, D.
Alviggi, M. G.
Amadio, B. T.
Amaral Coutinho, Y.
Ambroz, L.
Amelung, C.
Amidei, D.
Amor Dos Santos, S. P.
Amoroso, S.
Amrouche, C. S.
Anastopoulos, C.
Ancu, L. S.
Andari, N.
Andeen, T.
Anders, C. F.
Anders, J. K.
Anderson, K. J.
Andreazza, A.
Andrei, V.
Anelli, C. R.
Angelidakis, S.
Angelozzi, I.
Angerami, A.
Anisenkov, A. V.
Annovi, A.
Antel, C.
Anthony, M. T.
Antonelli, M.
Antrim, D. J. A.
Anulli, F.
Aoki, M.
Aperio Bella, L.
Arabidze, G.
Arai, Y.
Araque, J. P.
Araujo Ferraz, V.
Araujo Pereira, R.
Arce, A. T. H.
Ardell, R. E.
Arduh, F. A.
Arguin, J-F.
Argyropoulos, S.
Armbruster, A. J.
Armitage, L. J.
Armstrong, A
Affiliation
Univ Arizona, Dept PhysIssue Date
2018-08-16
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SPRINGERCitation
The ATLAS collaboration, Aaboud, M., Aad, G. et al. J. High Energ. Phys. (2018) 2018: 89. https://doi.org/10.1007/JHEP08(2018)089Journal
JOURNAL OF HIGH ENERGY PHYSICSRights
© The Author(s) 2018.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.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.Description
Open access journal.ISSN
1029-8479Version
Final published versionSponsors
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 KingdomAdditional Links
http://link.springer.com/10.1007/JHEP08(2018)089ae974a485f413a2113503eed53cd6c53
10.1007/JHEP08(2018)089