Электронный каталог

Статья

Hayrapetyan, A.
Pseudorapidity Distributions of Charged Hadrons in Lead-Lead collisions at *%s&sub(NN) = 5.36 TeV / A.Hayrapetyan, S.Afanasiev, V.Alexakhin, D.Budkouski, I.Golutvin, I.Gorbunov, V.Karjavine, V.Korenkov, A.Lanev, A.Malakhov, V.Matveev, V.Palichik, V.Perelygin, M.Savina, V.Shalaev, S.Shmatov, S.Shulha, V.Smirnov, N.Voytishin, B.S.Yuldashev, A.Zarubin, I.Zhizhin, A.Khvedelidze, Z.Tsamalaidze, [CMS Collab.] // Physics Letters B [Electronic resource]. – 2025. – Vol. 861. – P. 139279. – URL: https://doi.org/10.1016/j.physletb.2025.139279. – Bibliogr.: 62.

The pseudorapidity (*h) distributions of charged hadrons are measured using data collected at the highest ever nucleon-nucleon center-of-mass energy of *%𝑠&sub(NN) = 5.36 TeV for collisions of lead-lead ions. The data were recorded by the CMS experiment at the LHC in 2022 and correspond to an integrated luminosity of 0.30 *( 0.03 μb&sup(−1). Using the CMS silicon pixel detector, the yields of primary charged hadrons produced in the range |*h| < 2.6 are reported. The evolution of the midrapidity particle density as a function of collision centrality is also reported. In the 5% most central collisions, the charged-hadron *h density in the range |*h| < 0.5 is found to be 2032 *( 91 (syst), with negligible statistical uncertainty. This result is consistent with an extrapolation from nucleus-nucleus collision data at lower center-of-mass energies. Comparisons are made to various Monte Carlo event generators and to previous measurements of lead-lead and xenon-xenon collisions at similar collision energies. These new data detail the dependence of particle production on the collision energy, initial collision geometry, and the size of the colliding nuclei.



Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами
ОИЯИ = ОИЯИ (JINR)2025