Calibration of the light-flavour jet mistagging efficiency of the b-tagging algorithms with Z+jets events using 139 fb - 1 of ATLAS proton–proton collision data at √s=13 TeV
Aad, G. ; Åkesson, T.P.A. LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Geisen, J.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Jarlskog, G.
LU
and Konya, B.
LU
, et al.
(2023)
In European Physical Journal C
83(8).
- Abstract
- The identification of b-jets, referred to as b-tagging, is an important part of many physics analyses in the ATLAS experiment at the Large Hadron Collider and an accurate calibration of its performance is essential for high-quality physics results. This publication describes the calibration of the light-flavour jet mistagging efficiency in a data sample of proton–proton collision events at s=13 TeV corresponding to an integrated luminosity of 139 fb - 1 . The calibration is performed in a sample of Z bosons produced in association with jets. Due to the low mistagging efficiency for light-flavour jets, a method which uses modified versions of the b-tagging algorithms referred to as flip taggers is used in this work. A fit to the... (More)
- The identification of b-jets, referred to as b-tagging, is an important part of many physics analyses in the ATLAS experiment at the Large Hadron Collider and an accurate calibration of its performance is essential for high-quality physics results. This publication describes the calibration of the light-flavour jet mistagging efficiency in a data sample of proton–proton collision events at s=13 TeV corresponding to an integrated luminosity of 139 fb - 1 . The calibration is performed in a sample of Z bosons produced in association with jets. Due to the low mistagging efficiency for light-flavour jets, a method which uses modified versions of the b-tagging algorithms referred to as flip taggers is used in this work. A fit to the jet-flavour-sensitive secondary-vertex mass is performed to extract a scale factor from data, to correct the light-flavour jet mistagging efficiency in Monte Carlo simulations, while simultaneously correcting the b-jet efficiency. With this procedure, uncertainties coming from the modeling of jets from heavy-flavour hadrons are considerably lower than in previous calibrations of the mistagging scale factors, where they were dominant. The scale factors obtained in this calibration are consistent with unity within uncertainties. © 2023, The Author(s). (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/00ce883d-750b-4227-8d1c-e49fc4621963
- author
- Aad, G.
; Åkesson, T.P.A.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Geisen, J.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Jarlskog, G.
LU
and Konya, B.
LU
, et al. (More)
- Aad, G.
; Åkesson, T.P.A.
LU
; Corrigan, E.E.
LU
; Doglioni, C.
LU
; Ekman, P.A.
LU
; Geisen, J.
LU
; Hedberg, V.
LU
; Herde, H.
LU
; Jarlskog, G.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Mjörnmark, J.U.
LU
; Poettgen, R.
LU
; Simpson, N.D.
LU
; Skorda, E.
LU
; Smirnova, O.
LU
and Zwalinski, L.
(Less)
- author collaboration
- organization
- publishing date
- 2023
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 83
- issue
- 8
- article number
- 728
- publisher
- Springer
- external identifiers
-
- scopus:85168617206
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-023-11736-z
- language
- English
- LU publication?
- yes
- id
- 00ce883d-750b-4227-8d1c-e49fc4621963
- date added to LUP
- 2023-12-20 14:51:39
- date last changed
- 2023-12-20 14:51:55
@article{00ce883d-750b-4227-8d1c-e49fc4621963,
abstract = {{The identification of b-jets, referred to as b-tagging, is an important part of many physics analyses in the ATLAS experiment at the Large Hadron Collider and an accurate calibration of its performance is essential for high-quality physics results. This publication describes the calibration of the light-flavour jet mistagging efficiency in a data sample of proton–proton collision events at s=13 TeV corresponding to an integrated luminosity of 139 fb - 1 . The calibration is performed in a sample of Z bosons produced in association with jets. Due to the low mistagging efficiency for light-flavour jets, a method which uses modified versions of the b-tagging algorithms referred to as flip taggers is used in this work. A fit to the jet-flavour-sensitive secondary-vertex mass is performed to extract a scale factor from data, to correct the light-flavour jet mistagging efficiency in Monte Carlo simulations, while simultaneously correcting the b-jet efficiency. With this procedure, uncertainties coming from the modeling of jets from heavy-flavour hadrons are considerably lower than in previous calibrations of the mistagging scale factors, where they were dominant. The scale factors obtained in this calibration are consistent with unity within uncertainties. © 2023, The Author(s).}},
author = {{Aad, G. and Åkesson, T.P.A. and Corrigan, E.E. and Doglioni, C. and Ekman, P.A. and Geisen, J. and Hedberg, V. and Herde, H. and Jarlskog, G. and Konya, B. and Lytken, E. and Mjörnmark, J.U. and Poettgen, R. and Simpson, N.D. and Skorda, E. and Smirnova, O. and Zwalinski, L.}},
issn = {{1434-6044}},
language = {{eng}},
number = {{8}},
publisher = {{Springer}},
series = {{European Physical Journal C}},
title = {{Calibration of the light-flavour jet mistagging efficiency of the b-tagging algorithms with Z+jets events using 139 fb - 1 of ATLAS proton–proton collision data at √s=13 TeV}},
url = {{http://dx.doi.org/10.1140/epjc/s10052-023-11736-z}},
doi = {{10.1140/epjc/s10052-023-11736-z}},
volume = {{83}},
year = {{2023}},
}