Počet záznamů: 1  

Observation of long-range elliptic azimuthal anisotropies in √s = 13 and 2.76 TeV pp collisions with the ATLAS detector

  1. 1.
    0470557 - FZÚ 2017 RIV US eng J - Článek v odborném periodiku
    Aad, G. - Abbott, B. - Abdallah, J. - 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 2870 autorů
    Observation of long-range elliptic azimuthal anisotropies in √s = 13 and 2.76 TeV pp collisions with the ATLAS detector.
    Physical Review Letters. Roč. 116, č. 17 (2016), 1-20, č. článku 172301. ISSN 0031-9007. E-ISSN 1079-7114
    Institucionální podpora: RVO:68378271
    Klíčová slova: CERN LHC Coll * factorization * enhancement * correlation * long-range * elliptic flow * modulation * anisotropy * tracks: multiplicity
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 8.462, rok: 2016

    ATLAS has measured two-particle correlations as a function of the relative azimuthal angle, Δϕ, and pseudorapidity, Δη, in s=13 and 2.76 TeV pp collisions at the LHC using charged particles measured in the pseudorapidity interval |η|<2.5. The correlation functions evaluated in different intervals of measured charged-particle multiplicity show a multiplicity-dependent enhancement at Δϕ∼0 that extends over a wide range of Δη, which has been referred to as the “ridge.” Per-trigger-particle yields, Y(Δϕ), are measured over 2<|Δη|<5. For both collision energies, the Y(Δϕ) distribution in all multiplicity intervals is found to be consistent with a linear combination of the per-trigger-particle yields measured in collisions with less than 20 reconstructed tracks, and a constant combinatoric contribution modulated by cos(2Δϕ). The fitted Fourier coefficient, v2,2, exhibits factorization, suggesting that the ridge results from per-event cos(2ϕ) modulation of the single-particle distribution with Fourier coefficients v2.


    Trvalý link: http://hdl.handle.net/11104/0268161

     
     
Počet záznamů: 1  

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