Электронный каталог

Статья

Lednicky, R.
Probing a Core of the Interaction Potential of Two *L Hyperons with Femtoscopic Correlations at LEP : XXV International Baldin Seminar on High Energy Physics Problems «Relativistic Nuclear Physics and Quantum Chromodynamics», Dubna, September 18–23, 2023 : Materials / R.Lednicky // Физика элементарных частиц и атомного ядра. – 2024. – Т. 55, № 4. – P. 1160. – URL: http://www1.jinr.ru/Pepan/v-55-4/59_Lednicky_ann.pdf.

The analysis of ALEPH data on femtoscopic correlations of two Λ hyperons in Z-boson decays yields a very small source radius of (0.11 ± 0.03) fm if only the repulsion due to the Fermi–Dirac quantum statistics is taken into account. Such a small source radius is counter-intuitive in the string picture of particle production due to a moderate string tension of ∼ 1 GeV/fm. It is shown that the ALEPH data can be described with an acceptable source radius of 0.3 fm taking into account the repulsive final state interaction between hyperons at distances smaller than a femtometer. Information on the potential core of two-hyperon interaction is difficult to obtain otherwise



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 326 - Квантовая теория систем из многих частиц. Квантовая статистика
Спец.(статьи,препринты) = С 346 - Элементарные частицы