Fermi motion effects in electroproduction of hypernuclei

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F22%3A00564332" target="_blank" >RIV/61389005:_____/22:00564332 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1103/PhysRevC.106.044609" target="_blank" >https://doi.org/10.1103/PhysRevC.106.044609</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1103/PhysRevC.106.044609" target="_blank" >10.1103/PhysRevC.106.044609</a>

Result language
angličtina
Original language name
Fermi motion effects in electroproduction of hypernuclei
Original language description
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.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10304 - Nuclear physics

Project
<a href="/en/project/GA19-19640S" target="_blank" >GA19-19640S: Study of Hadron Interactions, Production and Bound States</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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