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

Standard

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

In: Journal of High Energy Physics, Vol. 2018, No. 8, 89, 01.08.2018.

Research output: Contribution to journal › Article › peer-review

Harvard

The ATLAS collaboration 2018, '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, 89. https://doi.org/10.1007/JHEP08(2018)089

APA

The ATLAS collaboration (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), [89]. https://doi.org/10.1007/JHEP08(2018)089

Vancouver

The ATLAS collaboration. 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):89. doi: 10.1007/JHEP08(2018)089

Author

The ATLAS collaboration. / Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV. In: Journal of High Energy Physics. 2018 ; Vol. 2018, No. 8.

BibTeX

@article{fb1d99c9f6db48599fadc69f57447ffe,

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

abstract = "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.",

keywords = "Hadron-Hadron scattering (experiments), PLUS PLUS, CROSS-SECTION",

author = "{The ATLAS collaboration} and M. Aaboud and G. Aad and B. Abbott and O. Abdinov and B. Abeloos and Abhayasinghe, {D. K.} and Abidi, {S. H.} and AbouZeid, {O. S.} and Abraham, {N. L.} and H. Abramowicz and H. Abreu and Y. Abulaiti and Acharya, {B. S.} and S. Adachi and L. Adamczyk and J. Adelman and M. Adersberger and A. Adiguzel and T. Adye and Affolder, {A. A.} and Y. Afik and C. Agheorghiesei and Aguilar-Saavedra, {J. A.} and F. Ahmadov and G. Aielli and S. Akatsuka and {\AA}kesson, {T. P.A.} and E. Akilli and Akimov, {A. V.} and Alberghi, {G. L.} and J. Albert and P. Albicocco and {Alconada Verzini}, {M. J.} and S. Alderweireldt and M. Aleksa and Aleksandrov, {I. N.} and C. Alexa and G. Alexander and T. Alexopoulos and M. Alhroob and Anisenkov, {A. V.} and Baldin, {E. M.} and Bobrovnikov, {V. S.} and Buzykaev, {A. R.} and Kharlamov, {A. G.} and T. Kharlamova and Maslennikov, {A. L.} and Talyshev, {A. A.} and Tikhonov, {Yu A.} and V. Zhulanov",

note = "Publisher Copyright: {\textcopyright} 2018, The Author(s).",

year = "2018",

month = aug,

day = "1",

doi = "10.1007/JHEP08(2018)089",

language = "English",

volume = "2018",

journal = "Journal of High Energy Physics",

issn = "1029-8479",

publisher = "Springer US",

number = "8",

}

RIS

TY - JOUR

T1 - Measurements of b-jet tagging efficiency with the ATLAS detector using tt¯ events at √s=13 TeV

AU - The ATLAS collaboration

AU - Aaboud, M.

AU - Aad, G.

AU - Abbott, B.

AU - Abdinov, O.

AU - Abeloos, B.

AU - Abhayasinghe, D. K.

AU - Abidi, S. H.

AU - AbouZeid, O. S.

AU - Abraham, N. L.

AU - Abramowicz, H.

AU - Abreu, H.

AU - Abulaiti, Y.

AU - Acharya, B. S.

AU - Adachi, S.

AU - Adamczyk, L.

AU - Adelman, J.

AU - Adersberger, M.

AU - Adiguzel, A.

AU - Adye, T.

AU - Affolder, A. A.

AU - Afik, Y.

AU - Agheorghiesei, C.

AU - Aguilar-Saavedra, J. A.

AU - Ahmadov, F.

AU - Aielli, G.

AU - Akatsuka, S.

AU - Åkesson, T. P.A.

AU - Akilli, E.

AU - Akimov, A. V.

AU - Alberghi, G. L.

AU - Albert, J.

AU - Albicocco, P.

AU - Alconada Verzini, M. J.

AU - Alderweireldt, S.

AU - Aleksa, M.

AU - Aleksandrov, I. N.

AU - Alexa, C.

AU - Alexander, G.

AU - Alexopoulos, T.

AU - Alhroob, M.

AU - Anisenkov, A. V.

AU - Baldin, E. M.

AU - Bobrovnikov, V. S.

AU - Buzykaev, A. R.

AU - Kharlamov, A. G.

AU - Kharlamova, T.

AU - Maslennikov, A. L.

AU - Talyshev, A. A.

AU - Tikhonov, Yu A.

AU - Zhulanov, V.

PY - 2018/8/1

Y1 - 2018/8/1

N2 - 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.

AB - 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.

KW - Hadron-Hadron scattering (experiments)

KW - PLUS PLUS

KW - CROSS-SECTION

UR - http://www.scopus.com/inward/record.url?scp=85051719783&partnerID=8YFLogxK

U2 - 10.1007/JHEP08(2018)089

DO - 10.1007/JHEP08(2018)089

M3 - Article

AN - SCOPUS:85051719783

VL - 2018

JO - Journal of High Energy Physics

JF - Journal of High Energy Physics

SN - 1029-8479

IS - 8

M1 - 89

ER -

ID: 16084663