Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13 TeV with the ATLAS detector
M., Aaboud ; Åkesson, T. LU
; Bocchetta, S.
LU
; Bryngemark, L.
LU
; Corrigan, E.
LU
; Doglioni, C.
LU
; Gregersen, K.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
and Jarlskog, G.
LU
, et al.
(2019)
In Physical Review D
99(7).
- Abstract
- A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in... (More)
- A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in agreement with the Standard Model predictions. The measurement of the ttZ cross section is used to set constraints on effective field theory operators which modify the ttZ vertex. © 2019 CERN, for the ATLAS Collaboration. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/abc8cd91-db6f-4480-8936-aad7e272d803
- author
- M., Aaboud
; Åkesson, T.
LU
; Bocchetta, S.
LU
; Bryngemark, L.
LU
; Corrigan, E.
LU
; Doglioni, C.
LU
; Gregersen, K.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
and Jarlskog, G.
LU
, et al. (More)
- M., Aaboud
; Åkesson, T.
LU
; Bocchetta, S.
LU
; Bryngemark, L.
LU
; Corrigan, E.
LU
; Doglioni, C.
LU
; Gregersen, K.
LU
; Hansen, E.
LU
; Hedberg, V.
LU
; Jarlskog, G.
LU
; Kalderon, C.
LU
; Kellermann, E.
LU
; Konya, B.
LU
; Lytken, E.
LU
; Mankinen, K.
LU
; Marcon, C.
LU
; Mjörnmark, J.
LU
; Mullier, G.
LU
; Poettgen, R.
LU
; Poulsen, T.
LU
; Smirnova, O.
LU
and L., Zwalinski
(Less)
- author collaboration
- organization
- publishing date
- 2019
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review D
- volume
- 99
- issue
- 7
- article number
- 072009
- publisher
- American Physical Society
- external identifiers
-
- scopus:85072076489
- ISSN
- 2470-0010
- DOI
- 10.1103/PhysRevD.99.072009
- language
- English
- LU publication?
- yes
- id
- abc8cd91-db6f-4480-8936-aad7e272d803
- date added to LUP
- 2022-04-05 18:41:22
- date last changed
- 2023-04-02 22:50:19
@article{abc8cd91-db6f-4480-8936-aad7e272d803,
abstract = {{A measurement of the associated production of a top-quark pair (tt) with a vector boson (W, Z) in proton-proton collisions at a center-of-mass energy of 13 TeV is presented, using 36.1 fb-1 of integrated luminosity collected by the ATLAS detector at the Large Hadron Collider. Events are selected in channels with two same- or opposite-sign leptons (electrons or muons), three leptons or four leptons, and each channel is further divided into multiple regions to maximize the sensitivity of the measurement. The ttZ and ttW production cross sections are simultaneously measured using a combined fit to all regions. The best-fit values of the production cross sections are σttZ=0.95±0.08stat±0.10syst pb and σttW=0.87±0.13stat±0.14syst pb in agreement with the Standard Model predictions. The measurement of the ttZ cross section is used to set constraints on effective field theory operators which modify the ttZ vertex. © 2019 CERN, for the ATLAS Collaboration.}},
author = {{M., Aaboud and Åkesson, T. and Bocchetta, S. and Bryngemark, L. and Corrigan, E. and Doglioni, C. and Gregersen, K. and Hansen, E. and Hedberg, V. and Jarlskog, G. and Kalderon, C. and Kellermann, E. and Konya, B. and Lytken, E. and Mankinen, K. and Marcon, C. and Mjörnmark, J. and Mullier, G. and Poettgen, R. and Poulsen, T. and Smirnova, O. and L., Zwalinski}},
issn = {{2470-0010}},
language = {{eng}},
number = {{7}},
publisher = {{American Physical Society}},
series = {{Physical Review D}},
title = {{Measurement of the tt¯Z and tt¯W cross sections in proton-proton collisions at s=13 TeV with the ATLAS detector}},
url = {{http://dx.doi.org/10.1103/PhysRevD.99.072009}},
doi = {{10.1103/PhysRevD.99.072009}},
volume = {{99}},
year = {{2019}},
}