Počet záznamů: 1
Calculations of antiproton nucleus quasi-bound states using the Paris (N)over-barN potential
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SYSNO ASEP 0486475 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Calculations of antiproton nucleus quasi-bound states using the Paris (N)over-barN potential Tvůrce(i) Óbertová, Jaroslava (UJF-V) ORCID, RID
Mareš, Jiří (UJF-V) RID, ORCIDCelkový počet autorů 2 Zdroj.dok. Nuclear Physics. A. - : Elsevier - ISSN 0375-9474
Roč. 969, č. 1 (2018), s. 45-59Poč.str. 15 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova antiproton-nucleus interaction ; Paris (N)over-barN potential ; antiproton-nuclear bound states Vědní obor RIV BE - Teoretická fyzika Obor OECD Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) CEP GA15-04301S GA ČR - Grantová agentura ČR Institucionální podpora UJF-V - RVO:61389005 UT WOS 000418974800004 DOI 10.1016/j.nuclphysa.2017.09.011 Anotace An optical potential constructed using the (p) over barN scattering amplitudes derived from the 2009 version of the Paris (N) over barN potential is applied in calculations of (p) over bar quasi-bound states in selected nuclei across the periodic table. A proper self-consistent procedure for treating energy dependence of the amplitudes in a nucleus appears crucial for evaluating (p) over bar binding energies and widths. Particular attention is paid to the role of P-wave amplitudes. While the P-wave potential nearly does not affect calculated (p) over bar binding energies, it reduces considerably the corresponding widths. The Paris S-wave potential supplemented by a phenomenological P-wave term yields in dynamical calculations (p) over bar binding energies B-(p) over bar approximate to 200 MeV and widths Gamma((p) over bar) similar to 200-230 MeV, which is very close to the values obtained within the RMF model consistent with (p) over bar -atom data. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2019
Počet záznamů: 1