Электронный каталог

Статья

Ablikim, M.
First Measurement of *LN Inelastic Scattering with *L from e*+e*- *>J/*q *>*L*L^- / M.Ablikim, O.Bakina, I.Boyko, G.Chelkov, D.Dedovich, I.Denysenko, P.Egorov, A.Guskov, Y.Nefedov, A.Sarantsev, A.Zhemchugov, [a.o.] // Physical Review C [Electronic resource]. – 2024. – Vol. 109, No. 5. – P. L052201. – URL: https://doi.org/10.1103/PhysRevC.109.L052201. – Bibliogr.: 65.

Using an e+e− collision data sample of (10087±44)×106 J/ψ events taken at the center-of-mass energy of 3.097 GeV by the BESIII detector at the BEPCII collider, the process Λ+N→Σ++X is studied for the first time employing a novel method. The Σ+ hyperons are produced by the collisions of Λ hyperons from J/ψ decays with nuclei in the material of the BESIII detector. The total cross section of Λ+Be9→Σ++X is measured to be σ=(37.3±4.7±3.5) mb with Λ momenta within [1.057,1.091] GeV/c, where the uncertainties are statistical and systematic, respectively. This analysis is the first study of Λ-nucleon interactions at an e+e− collider, providing information and constraints relevant for the strong-interaction potential, the origin of color confinement, the unified model for baryon-baryon interactions, and the internal structure of neutron stars.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 346.6г - Гиперонные резонансы