Počet záznamů: 1  

Gamma (1S+2S+3S) production in d plus Au and p plus p collisions at root s(NN)=200 GeV and cold-nuclear-matter effects

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    0436927 - FZÚ 2015 RIV US eng J - Článek v odborném periodiku
    Adare, A. - Afanasiev, S. - Aidala, C. - Tomášek, Lukáš - Tomášek, Michal - Vrba, Václav … celkem 415 autorů
    Gamma (1S+2S+3S) production in d plus Au and p plus p collisions at root s(NN)=200 GeV and cold-nuclear-matter effects.
    Physical Review. C. Roč. 87, č. 4 (2013), "044909-1"-"044909-13". ISSN 0556-2813
    Institucionální podpora: RVO:68378271
    Klíčová slova: parton distributions
    Kód oboru RIV: BF - Elementární částice a fyzika vys. energií
    Impakt faktor: 3.881, rok: 2013

    The three gamma states, gamma (1S + 2S + 3S), are measured in d + Au and p + p collisions at root s(NN) = 200 GeV and rapidities 1.2 < vertical bar y vertical bar < 2.2 by the PHENIX experiment at the Relativistic Heavy Ion Collider. Cross sections for the inclusive gamma (1S + 2S + 3S) production are obtained. The inclusive yields per binary collision for d + Au collisions relative to those in p + p collisions (R-dAu) are found to be 0.62 +/- 0.26 (stat) +/- 0.13 (syst) in the gold-going direction and 0.91 +/- 0.33 (stat) +/- 0.16 (syst) in the deuteron-going direction. The measured results are compared to a nuclear-shadowing model, EPS09 [Eskola et al., J. High Energy Phys. 04 (2009) 065], combined with a final-state breakup cross section, sigma(br), and compared to lower energy p + A results. We also compare the results to the PHENIX J/psi results [Adare et al., Phys. Rev. Lett. 107, 142301 (2011)].
    Trvalý link: http://hdl.handle.net/11104/0240539

     
     
Počet záznamů: 1  

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