University of Sussex
Browse
__smbhome.uscs.susx.ac.uk_bw233_Desktop_SRO_SRO - ATLAS_Received 01-11-17_10.1007-JHEP10(2017)129.pdf (997.29 kB)

Search for top quark decays t ? qH, with H ? ??, in vs=13 TeV pp collisions using the ATLAS detector

Download (997.29 kB)
journal contribution
posted on 2023-06-09, 08:32 authored by Benedict AllbrookeBenedict Allbrooke, Lily AsquithLily Asquith, Alessandro CerriAlessandro Cerri, C A Chavez Barajas, Antonella De SantoAntonella De Santo, Fabrizio SalvatoreFabrizio Salvatore, I Santoyo Castillo, K Suruliz, Mark SuttonMark Sutton, Iacopo Vivarelli, The ATLAS Collaboration and
This article presents a search for flavour-changing neutral currents in the decay of a top quark into an up-type (q = c, u) quark and a Higgs boson, where the Higgs boson decays into two photons. The proton-proton collision data set analysed amounts to 36.1 fb-1 at vs=13 TeV collected by the ATLAS experiment at the LHC. Top quark pair events are searched for, where one top quark decays into qH and the other decays into bW. Both the hadronic and leptonic decay modes of the W boson are used. No significant excess is observed and an upper limit is set on the t ? cH branching ratio of 2.2 × 10-3 at the 95% confidence level, while the expected limit in the absence of signal is 1.6 × 10-3. The corresponding limit on the tcH coupling is 0.090 at the 95% confidence level. The observed upper limit on the t ? uH branching ratio is 2.4 × 10-3.

Funding

ATLAS; G0275; STFC-SCIENCE AND TECHNOLOGY FACILITIES COUNCIL; ST/I006048/1

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of High Energy Physics

ISSN

1126-6708

Publisher

Springer Verlag

Issue

129

Volume

2017

Department affiliated with

  • Physics and Astronomy Publications

Full text available

  • Yes

Peer reviewed?

  • Yes

Legacy Posted Date

2017-11-01

First Open Access (FOA) Date

2017-11-01

First Compliant Deposit (FCD) Date

2017-11-01

Usage metrics

    University of Sussex (Publications)

    Categories

    No categories selected

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC