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Search for pairs of highly collimated photon-jets in pp collisions at root s=13 TeV with the ATLAS detector

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F19%3A73594764" target="_blank" >RIV/61989592:15310/19:73594764 - isvavai.cz</a>

  • Alternative codes found

    RIV/68407700:21220/19:00329329 RIV/68407700:21340/19:00329329 RIV/68407700:21670/19:00329329 RIV/00216208:11320/19:10407429

  • Result on the web

    <a href="https://journals.aps.org/prd/pdf/10.1103/PhysRevD.99.012008" target="_blank" >https://journals.aps.org/prd/pdf/10.1103/PhysRevD.99.012008</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1103/PhysRevD.99.012008" target="_blank" >10.1103/PhysRevD.99.012008</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Search for pairs of highly collimated photon-jets in pp collisions at root s=13 TeV with the ATLAS detector

  • Original language description

    Results of a search for the pair production of photon-jets-collimated groupings of photons-in the ATLAS detector at the Large Hadron Collider are reported. Highly collimated photon-jets can arise from the decay of new, highly boosted particles that can decay to multiple photons collimated enough to be identified in the electromagnetic calorimeter as a single, photonlike energy cluster. Data from proton-proton collisions at a center-of-mass energy of 13 TeV, corresponding to an integrated luminosity of 36.7 fb(-1), were collected in 2015 and 2016. Candidate photon-jet pair production events are selected from those containing two reconstructed photons using a set of identification criteria much less stringent than that typically used for the selection of photons, with additional criteria applied to provide improved sensitivity to photon-jets. Narrow excesses in the reconstructed diphoton mass spectra are searched for. The observed mass spectra are consistent with the Standard Model background expectation. The results are interpreted in the context of a model containing a new, high-mass scalar particle with narrow width, X, that decays into pairs of photon-jets via new, light particles, a. Upper limits are placed on the cross section times the product of branching ratios sigma x B(X -&gt; aa) x B(a -&gt; gamma gamma)(2) for 200 GeV &lt; m(X) &lt; 2 TeV and for ranges of m(a) from a lower mass of 100 MeV up to between 2 and 10 GeV, depending upon m(X). Upper limits are also placed on sigma x B(X -&gt; aa) x B(a -&gt; 3 pi(0))(2) for the same range of m(X) and for ranges of m(a) from a lower mass of 500 MeV up to between 2 and 10 GeV.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10303 - Particles and field physics

Result continuities

  • Project

    Result was created during the realization of more than one project. More information in the Projects tab.

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2019

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    PHYSICAL REVIEW D

  • ISSN

    2470-0010

  • e-ISSN

  • Volume of the periodical

    99

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    US - UNITED STATES

  • Number of pages

    29

  • Pages from-to

    "012008-1"-"012008-29"

  • UT code for WoS article

    000456035800008

  • EID of the result in the Scopus database

    2-s2.0-85061097157