University of Sussex
Browse
Aaboud2018_Article_SearchForDarkMatterProducedInA.pdf (2.07 MB)

Search for dark matter produced in association with bottom or top quarks in vs = 13 TeV pp collisions with the ATLAS detector

Download (2.07 MB)
Version 2 2023-06-12, 08:47
Version 1 2023-06-09, 09:27
journal contribution
posted on 2023-06-12, 08:47 authored by Fabrizio SalvatoreFabrizio Salvatore, Antonella De SantoAntonella De Santo, Iacopo Vivarelli, Alessandro CerriAlessandro Cerri, Lily AsquithLily Asquith, Benedict AllbrookeBenedict Allbrooke, Kerim Suruliz, Mark SuttonMark Sutton, Carlos Chavez Barajas, The ATLAS Collaboration
A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb-1 of proton–proton collision data recorded by the ATLAS experiment at vs = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted 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 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements.

History

Publication status

  • Published

File Version

  • Published version

Journal

European Physical Journal C: Particles and Fields

ISSN

1434-6044

Publisher

Springer Verlag

Issue

1

Volume

78

Page range

1-36

Article number

a18

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Experimental Particle Physics Research Group Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-12-19

First Open Access (FOA) Date

2017-12-19

First Compliant Deposit (FCD) Date

2017-12-19

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC