A. I. Milshtein, S. G. Sal'nikov, “Natural explanation of recent results on <nobr>$e^{+}e^{-}\to\Lambda\bar{\Lambda}$</nobr>”, Pis'ma v Zh. Èksper. Teoret. Fiz., 2023, Volume 117, Issue 12,Pages <nobr>901

This article is cited in 6 papers

FIELDS, PARTICLES, AND NUCLEI

Natural explanation of recent results on $e^{+}e^{-}\to\Lambda\bar{\Lambda}$

A. I. Milshtein^ab, S. G. Sal'nikov^ba

^a Novosibirsk State University, Novosibirsk, 630090 Russia
^b Budker Institute of Nuclear Physics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia

Abstract: We show that the recent experimental data on the cross section of the process $e^{+}e^{-}\to\Lambda\bar{\Lambda}$ near the threshold can be perfectly explained by the final-state interaction of $\Lambda $ and $\bar{\Lambda}$. The enhancement of the cross section is related to the existence of low-energy real or virtual state in the corresponding potential. We present a simple analytical formula that fits the experimental data very well.

Received: 16.05.2023
Revised: 16.05.2023
Accepted: 18.05.2023

DOI: 10.31857/S1234567823120054