Электронный каталог

Статья

Acharya, S.
Measurements of Azimuthal Anisotropies at Forward and Backward Rapidity with Muons in High-Multiplicity p–Pb Collisions at *%s&sub(NN) = 8.16 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.] // Physics Letters B [Electronic resource]. – 2023. – Vol.846. – P.137782. – URL: https://doi.org/10.1016/j.physletb.2023.137782. – Bibliogr.:115.

The study of the azimuthal anisotropy of inclusive muons produced in p–Pb collisions at TeV, using the ALICE detector at the LHC is reported. The measurement of the second-order Fourier coefficient of the particle azimuthal distribution, , is performed as a function of transverse momentum in the 0–20% high-multiplicity interval at both forward () and backward () rapidities over a wide range, GeV/c, in which a dominant contribution of muons from heavy-flavour hadron decays is expected at GeV/c. The coefficient of inclusive muons is extracted using two different techniques, namely two-particle cumulants, used for the first time for heavy-flavour measurements, and forward–central two-particle correlations. Both techniques give compatible results. A positive is measured at both forward and backward rapidities with a significance larger than 4.7σ and 7.6σ, respectively, in the interval GeV/c. Comparisons with previous measurements in p–Pb collisions at TeV, and with AMPT and CGC-based theoretical calculations are discussed. The findings impose new constraints on the theoretical interpretations of the origin of the collective behaviour in small collision systems.



ОИЯИ = ОИЯИ (JINR)2023
Спец.(статьи,препринты) = С 343 в - Взаимодействие протонов с ядрами (Z>2). Изобарно- аналоговые состояния