Электронный каталог

Статья

Acharya, S.
Femtoscopic Study of the Proton-Proton and Proton-Deuteron Systems in Heavy-Ion Collisions at the LHC / S.Acharya, B.Batyunya, R.A.Diaz, S.Grigoryan, A.Kondratyev, A.Kuznetsov, K.Mikhaylov, P.Nomokonov, V.Pozdniakov, E.Rogochaya, A.Vodopyanov, [ALICE Collab.]. – Text : electronic // Physics Letters B. – 2025. – Vol. 871. – P. 139921. – URL: https://doi.org/10.1016/j.physletb.2025.139921. – Bibliogr.: 85.

This work reports femtoscopic correlations of p–p (p^-–p^-) and p–d (p^-–d^-) pairs measured in Pb–Pb collisions at centerof-mass energy per nucleon %s&sub(NN) = 5.02 TeV in the ALICE Collaboration. A fit to the measured proton-proton correlation functions allows one to extract the dependence of the nucleon femtoscopic radius of the particleemitting source on the pair transverse mass (𝑚&sub(T)) and on the average charge particle multiplicity ⟨dN&sub(ch)∕d&sub(*h)⟩&sup(1∕3) for three centrality intervals (0 − 10%, 10 − 30 %, 30 − 50%). In both cases, the expected power-law and linear scalings are observed, respectively. The measured p–d correlations can be described by both two- and threebody calculations, indicating that the femtoscopy observable is not sensitive to the short-distance features of the dynamics of the p-(p-n) system, due to the large inter-particle distances in Pb–Pb collisions at the LHC. Indeed, in this study, the minimum measured femtoscopic source sizes for protons and deuterons have a minimum value at 2.73&sup(+0.05)&sub(−0.05) and 3.10&sup(+1.04) &sub(−0.86) fm, respectively, for the 30–50% centrality collisions. Moreover, the 𝑚&sub(T) -scaling obtained for the p–p and p–d systems is compatible within 1*g of the uncertainties. These findings provide new input for fundamental studies on the production of light (anti)nuclei under extreme conditions.



Спец.(статьи,препринты) = С 346.2в - Взаимодействие протонов с протонами
Спец.(статьи,препринты) = С 346.2д - Взаимодействие нуклонов с простейшими ядрами: дейтерий, тритий, гелий
ОИЯИ = ОИЯИ (JINR)2025