Počet záznamů: 1
Fermi motion effects in electroproduction of hypernuclei
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SYSNO ASEP 0564332 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Fermi motion effects in electroproduction of hypernuclei Tvůrce(i) Bydžovský, Petr (UJF-V) RID, ORCID, SAI
Denisova, Daria (UJF-V) SAI, ORCID
Skoupil, Dalibor (UJF-V) SAI, ORCID
Veselý, Petr (UJF-V) ORCID, SAICelkový počet autorů 4 Číslo článku 044609 Zdroj.dok. Physical Review C. - : American Physical Society - ISSN 2469-9985
Roč. 106, č. 4 (2022)Poč.str. 19 s. Forma vydání Tištěná - P Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova electroproduction ; hypernuclei ; proton momentum Obor OECD Nuclear physics CEP GA19-19640S GA ČR - Grantová agentura ČR Způsob publikování Omezený přístup Institucionální podpora UJF-V - RVO:61389005 UT WOS 000878848700004 EID SCOPUS 85142001719 DOI 10.1103/PhysRevC.106.044609 Anotace In a previous analysis of electroproduction of hypernuclei the cross sections were calculated using the distorted-wave impulse approximation where the momentum of the initial proton in the nucleus was set to zero (the 'frozen-proton' approximation). In this paper we go beyond this approximation, assuming a nonzero effec-tive proton momentum due to proton Fermi motion inside the target nucleus, discussing also other kinematical effects. To this end we have derived a more general form of the two-component elementary electroproduction amplitude (Chew-Goldberger-Low-Nambu-like) which allows its use in a general reference frame moving with respect to the nucleus rest frame. The effects of Fermi motion were found to depend on kinematics and elementary amplitudes. The largest effects were observed in the contributions from the longitudinal and interference parts of the cross sections. The extension of the calculations beyond the frozen-proton approximation improved the agreement of predicted theoretical cross sections with experimental data, and, once we assumed the optimum on-shell approximation, we were able to remove an inconsistency which was previously present in the calculations. Pracoviště Ústav jaderné fyziky Kontakt Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Rok sběru 2023 Elektronická adresa https://doi.org/10.1103/PhysRevC.106.044609
Počet záznamů: 1