Электронный каталог

Статья

Acharya, S.
Azimuthal Anisotropy of Jet Particles in p-Pb and Pb-Pb Collisions at *%s&sub(NN)=5.02 TeV / S.Acharya, B.Batyunya, C.Ceballos Sanchez, R.A.Diaz, S.Grigoryan, A.Kondratyev, L.Malinina, K.Mikhaylov, P.Nomokonov, V.Pozdniakov, E.Rogochaya, G.Romanenko, B.Rumyantsev, A.Vodopyanov, [ALICE Collab.] // Journal of High Energy Physics [Electronic resource]. – 2024. – Vol. 2024, No. 8. – P. 234. – URL: https://doi.org/10.1007/JHEP08(2024)234. – Bibliogr.: 68.

The azimuthal anisotropy of particles associated with jets (jet particles) at midrapidity is measured for the frst time in p-Pb and Pb-Pb collisions at √sNN = 5.02 TeV down to transverse momentum (p&sub(T)) of 0.5 GeV/c and 2 GeV/c, respectively, with ALICE. The results obtained in p-Pb collisions are based on a novel three-particle correlation technique. The azimuthal anisotropy coefcient v&sub(2) in high-multiplicity p-Pb collisions is positive, with a signifcance reaching 6.8σ at low p&sub(T), and its magnitude is smaller than in semicentral Pb-Pb collisions. In contrast to the measurements in Pb-Pb collisions, the v&sub(2) coefcient is also found independent of p&sub(T) within uncertainties. Comparisons with the inclusive charged-particle v&sub(2) and with AMPT calculations are discussed. The predictions suggest that parton interactions play an important role in generating a non-zero jet-particle v&sub(2) in p-Pb collisions, even though they overestimate the reported measurement. These observations shed new insights on the understanding of the origin of the collective behaviour of jet particles in small systems such as p-Pb collisions, and provide signifcant stringent new constraints to models.



ОИЯИ = ОИЯИ (JINR)2024
Спец.(статьи,препринты) = С 343 в - Взаимодействие протонов с ядрами (Z>2). Изобарно- аналоговые состояния
Спец.(статьи,препринты) = С 343 е2 - Взаимодействие релятивистских ядер с ядрами