Počet záznamů: 1  

Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector

  1. 1.
    0465616 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
    Aaboud, M. - Aad, G. - Abbott, B. - Chudoba, Jiří - Havránek, Miroslav - Hejbal, Jiří - Jakoubek, Tomáš - Kepka, Oldřich - Kupčo, Alexander - Kůs, Vlastimil - Lokajíček, Miloš - Lysák, Roman - Marčišovský, Michal - Mikeštíková, Marcela - Němeček, Stanislav - Penc, Ondřej - Šícho, Petr - Staroba, Pavel - Svatoš, Michal - Taševský, Marek - Vrba, Václav … celkem 2861 autorů
    Search for resonances in diphoton events at √s=13 TeV with the ATLAS detector.
    Journal of High Energy Physics. Roč. 2016, č. 9 (2016), s. 1-49, č. článku 001. ISSN 1029-8479. E-ISSN 1029-8479
    Institucionální podpora: RVO:68378271
    Klíčová slova: hadron-hadron scattering * beyond standard model * ATLAS * hard scattering * particle and resonance production * proton-proton scattering
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 6.063, rok: 2016

    Searches for new resonances decaying into two photons in the ATLAS experiment at the CERN Large Hadron Collider are described. The analysis is based on proton-proton collision data corresponding to an integrated luminosity of 3.2 fb−1 at s√=13 TeV recorded in 2015. Two searches are performed, one targeted at a spin-2 particle of mass larger than 500 GeV, using Randall-Sundrum graviton states as a benchmark model, and one optimized for a spin-0 particle of mass larger than 200 GeV. Varying both the mass and the decay width, the most significant deviation from the background-only hypothesis is observed at a diphoton invariant mass around 750 GeV with local significances of 3.8 and 3.9 standard deviations in the searches optimized for a spin-2 and spin-0 particle, respectively. The global significances are estimated to be 2.1 standard deviations for both analyses. The consistency between the data collected at 13 TeV and 8 TeV is also evaluated. Limits on the production cross section times branching ratio to two photons for the two resonance types are reported.

    Trvalý link: http://hdl.handle.net/11104/0264089

     
     
Počet záznamů: 1  

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