Электронный каталог

Статья

Adhikary, H.
Two-Pion Femtoscopic Correlations in Be+Be Collisions at *%s&sub(NN)=16.84 GeV Measured by the NA61/SHINE at CERN / H.Adhikary, M.Buryakov, A.Dmitriev, V.Golovatyuk, V.A.Kireyeu, R.Kolesnikov, A.Krasnoperov, G.Lykasov, V.V.Lyubushkin, A.I.Malakhov, V.Matveev, G.L.Melkumov, B.A.Popov, M.Rumyantsev, V.Tereshchenko, A.Zaitsev, [et al.] // The European Physical Journal C [Electronic resource]. – 2023. – Vol.83, No.10. – P.919. – URL: https://doi.org/10.1140/epjc/s10052-023-11997-8. – Bibliogr.:70.

This paper reports measurements of two-pion femtoscopic correlations in Be+Be collisions at a beam momentum of 150 (energy available in the center-of-mass system for nucleon pair GeV) by the NA61/SHINE experiment at the CERN SPS accelerator. The obtained momentum space correlation functions can be well described by a Lévy distributed source model. The transverse mass dependence of the Lévy source parameters is presented, and their possible theoretical interpretations are discussed. The results show that the Lévy exponent is approximately constant as a function of , and far from both the Gaussian case of or the conjectured value at the critical endpoint, . The radius scale parameter R shows a slight decrease in , which can be explained as a signature of transverse flow. Finally, an approximately constant trend of the intercept parameter as a function of was observed, similar to previous NA44 S + Pb results (obtained with a Gaussian approximation, but unlike RHIC results).



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами