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Exploring time like tranistions in pp, pi p and AA reactions with HADES

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    0541145 - ÚJF 2021 RIV FR eng C - Konferenční příspěvek (zahraniční konf.)
    Salabura, P. - Adamczewski-Musch, J. - Arnoldi-Meadows, B. - Chlad, Lukáš - Chudoba, Petr - Kugler, Andrej - Prozorov, Alexandr P. - Rodriguez Ramos, Pablo - Svoboda, Ondřej - Tlustý, Pavel - Wagner, Vladimír … celkem 111 autorů
    Exploring time like tranistions in pp, pi p and AA reactions with HADES.
    EPJ Web of Conferences. Vol. 241. Les Ulis: E D P Sciences, 2020, č. článku 01013. ISSN 2100-014X.
    [12th International Workshop on the Physics of Excited Nucleons (NSTAR 2019). Bonn (DE), 10.06.2019-14.06.2019]
    Grant CEP: GA MŠk LM2015049; GA MŠk EF16_013/0001677; GA MŠk LTT17003
    Institucionální podpora: RVO:61389005
    Klíčová slova: HADES * nucleon * QCD
    Obor OECD: Particles and field physics

    Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q(2) in timelike region. A prominent enhancement in the respective electromagnetic transition FormFactors (etFF) at q(2) near vector mesons rho/omega poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding of these couplings is also of primary importance for the interpretation of the emissivity of QCD matter studied in heavy ion collisions via dilepton emission. Dedicated measurements of baryon Dalitz decays in proton-proton and pion-proton scattering with HADES detector at GSI/FAIR are presented and discussed. The relevance of these studies for the interpretation of results obtained from heavy ion reactions is elucidated on the example of the HADES results.
    Trvalý link: http://hdl.handle.net/11104/0318744

     
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