Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector
Aaboud, M ; Aad, G ; Abbott, B. ; Abdinov, O ; Abeloos, B ; Abidi, S. H. ; Åkesson, Torsten LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
and Hedberg, Vincent
LU
, et al.
(2018)
In European Physical Journal C
78(1).
- Abstract
- A search for weakly interacting massive dark-matter particles produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and missing transverse momentum are considered. The analysis uses 36.1fb-1 of proton–proton collision data recorded by the ATLAS experiment at s=13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are interpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour-neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary... (More)
- A search for weakly interacting massive dark-matter particles produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and missing transverse momentum are considered. The analysis uses 36.1fb-1 of proton–proton collision data recorded by the ATLAS experiment at s=13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are interpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour-neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross-section of 300 times the predicted rate for mediators with masses between 10 and 50GeV and assuming a dark-matter mass of 1GeV and unitary coupling. Constraints on colour-charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35GeV, mediator particles with mass below 1.1TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements. © 2018, CERN for the benefit of the ATLAS collaboration. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2bca5e94-ee12-459e-8737-34451f7b0483
- author
- Aaboud, M
; Aad, G
; Abbott, B.
; Abdinov, O
; Abeloos, B
; Abidi, S. H.
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
and Hedberg, Vincent
LU
, et al. (More)
- Aaboud, M
; Aad, G
; Abbott, B.
; Abdinov, O
; Abeloos, B
; Abidi, S. H.
; Åkesson, Torsten
LU
; Bocchetta, Simona
LU
; Doglioni, Caterina
LU
; Hedberg, Vincent
LU
; Jarlskog, Göran
LU
; Kalderon, Charles
LU
; Kellermann, Edgar
LU
; Konya, Balazs
LU
; Lytken, Else
LU
; Mankinen, Katja
LU
; Mjörnmark, Ulf
LU
; Pöttgen, Ruth
LU
; Poulsen, Trine
LU
; Smirnova, Oxana
LU
and Viazlo, Oleksandr
LU
(Less)
- author collaboration
- organization
- publishing date
- 2018
- type
- Contribution to journal
- publication status
- published
- subject
- in
- European Physical Journal C
- volume
- 78
- issue
- 1
- article number
- 18
- publisher
- Springer
- external identifiers
-
- scopus:85040740833
- ISSN
- 1434-6044
- DOI
- 10.1140/epjc/s10052-017-5486-1
- language
- English
- LU publication?
- yes
- additional info
- Export Date: 30 January 2018
- id
- 2bca5e94-ee12-459e-8737-34451f7b0483
- date added to LUP
- 2018-01-30 15:43:41
- date last changed
- 2023-04-08 06:42:07
@article{2bca5e94-ee12-459e-8737-34451f7b0483,
abstract = {{A search for weakly interacting massive dark-matter particles produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and missing transverse momentum are considered. The analysis uses 36.1fb-1 of proton–proton collision data recorded by the ATLAS experiment at s=13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are interpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour-neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross-section of 300 times the predicted rate for mediators with masses between 10 and 50GeV and assuming a dark-matter mass of 1GeV and unitary coupling. Constraints on colour-charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35GeV, mediator particles with mass below 1.1TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements. © 2018, CERN for the benefit of the ATLAS collaboration.}},
author = {{Aaboud, M and Aad, G and Abbott, B. and Abdinov, O and Abeloos, B and Abidi, S. H. and Åkesson, Torsten and Bocchetta, Simona and Doglioni, Caterina and Hedberg, Vincent and Jarlskog, Göran and Kalderon, Charles and Kellermann, Edgar and Konya, Balazs and Lytken, Else and Mankinen, Katja and Mjörnmark, Ulf and Pöttgen, Ruth and Poulsen, Trine and Smirnova, Oxana and Viazlo, Oleksandr}},
issn = {{1434-6044}},
language = {{eng}},
number = {{1}},
publisher = {{Springer}},
series = {{European Physical Journal C}},
title = {{Search for dark matter produced in association with bottom or top quarks in √s=13 TeV pp collisions with the ATLAS detector}},
url = {{http://dx.doi.org/10.1140/epjc/s10052-017-5486-1}},
doi = {{10.1140/epjc/s10052-017-5486-1}},
volume = {{78}},
year = {{2018}},
}