Skip to main content
Journal cover image

Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV

Publication ,  Journal Article
Aaboud, M; Aad, G; Abbott, B; Abdinov, O; Abeloos, B; Abhayasinghe, DK; Abidi, SH; AbouZeid, OS; Abraham, NL; Abramowicz, H; Abreu, H; Adye, T ...
Published in: Journal of High Energy Physics
August 1, 2018

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. 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.

Duke Scholars

Altmetric Attention Stats
Dimensions Citation Stats

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

ISSN

1126-6708

Publication Date

August 1, 2018

Volume

2018

Issue

8

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

Citation

APA
Chicago
ICMJE
MLA
NLM
Aaboud, M., Aad, G., Abbott, B., Abdinov, O., Abeloos, B., Abhayasinghe, D. K., … Armstrong, A. (2018). Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV. Journal of High Energy Physics, 2018(8). https://doi.org/10.1007/JHEP08(2018)089
Aaboud, M., G. Aad, B. Abbott, O. Abdinov, B. Abeloos, D. K. Abhayasinghe, S. H. Abidi, et al. “Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV.” Journal of High Energy Physics 2018, no. 8 (August 1, 2018). https://doi.org/10.1007/JHEP08(2018)089.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abhayasinghe DK, et al. Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV. Journal of High Energy Physics. 2018 Aug 1;2018(8).
Aaboud, M., et al. “Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV.” Journal of High Energy Physics, vol. 2018, no. 8, Aug. 2018. Scopus, doi:10.1007/JHEP08(2018)089.
Aaboud M, Aad G, Abbott B, Abdinov O, Abeloos B, Abhayasinghe DK, Abidi SH, AbouZeid OS, Abraham NL, Abramowicz H, Abreu H, Abulaiti Y, Acharya BS, Adachi S, Adamczyk L, Adelman J, Adersberger M, Adiguzel A, Adye T, Affolder AA, Afik Y, Agheorghiesei C, Aguilar-Saavedra JA, Ahmadov F, Aielli G, Akatsuka S, Åkesson TPA, Akilli E, Akimov AV, Alberghi GL, Albert J, Albicocco P, Alconada Verzini MJ, Alderweireldt S, Aleksa M, Aleksandrov IN, Alexa C, Alexander G, Alexopoulos T, Alhroob M, Ali B, Alimonti G, Alison J, Alkire SP, Allaire C, Allbrooke BMM, Allen BW, Allport PP, Aloisio A, Alonso A, Alonso F, Alpigiani C, Alshehri AA, Alstaty MI, Alvarez Gonzalez B, Álvarez Piqueras D, Alviggi MG, Amadio BT, Amaral Coutinho Y, Ambroz L, Amelung C, Amidei D, Amor Dos Santos SP, Amoroso S, Amrouche CS, Anastopoulos C, Ancu LS, Andari N, Andeen T, Anders CF, Anders JK, Anderson KJ, Andreazza A, Andrei V, Anelli CR, Angelidakis S, Angelozzi I, Angerami A, Anisenkov AV, Annovi A, Antel C, Anthony MT, Antonelli M, Antrim DJA, Anulli F, Aoki M, Aperio Bella L, Arabidze G, Arai Y, Araque JP, Araujo Ferraz V, Araujo Pereira R, Arce ATH, Ardell RE, Arduh FA, Arguin JF, Argyropoulos S, Armbruster AJ, Armitage LJ, Armstrong A. Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV. Journal of High Energy Physics. 2018 Aug 1;2018(8).
Journal cover image

Published In

Journal of High Energy Physics

DOI

EISSN

1029-8479

ISSN

1126-6708

Publication Date

August 1, 2018

Volume

2018

Issue

8

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics