Charged hadron elliptic anisotropies (𝑣2) are presented over a wide transverse momentum (𝑝T) range for proton-lead (𝑝⁢Pb) and lead-lead (PbPb) collisions at nucleon-nucleon center-of-mass energies of 8.16 and 5.02 TeV, respectively. The data were recorded by the CMS experiment and correspond to integrated luminosities of 186 and 0.607  nb−1 for the 𝑝⁢Pb and PbPb systems, respectively. A four-particle cumulant analysis is performed using subevents separated in pseudorapidity to effectively suppress noncollective effects. At high 𝑝T (𝑝T>8  GeV), significant positive 𝑣2 values that are similar between 𝑝⁢Pb and PbPb collisions at comparable charged particle multiplicities are observed. This observation suggests a common origin for the multiparticle collectivity for high-𝑝T particles in the two systems.

Chekhovsky, V., Hayrapetyan, A., Makarenko, V., Tumasyan, A., Adam, W., Andrejkovic, J. w., et al. (2025). Evidence for Similar Collectivity of High Transverse-Momentum Particles in p -Pb and Pb-Pb Collisions. PHYSICAL REVIEW LETTERS, 135(7), 71903-1-071903-21 [10.1103/t5kp-vsv7].

Evidence for Similar Collectivity of High Transverse-Momentum Particles in p -Pb and Pb-Pb Collisions

Battilana, C.;Bonacorsi, D.;Castro, A.;Cuffiani, M.;Diotalevi, T.;Fanfani, A.;Giommi, L.;Guiducci, L.;Lorusso, M.;Paggi, G.;Rossi Tisbeni, S.;Rovelli, T.;Siroli, G.  P.;
2025

Abstract

Charged hadron elliptic anisotropies (𝑣2) are presented over a wide transverse momentum (𝑝T) range for proton-lead (𝑝⁢Pb) and lead-lead (PbPb) collisions at nucleon-nucleon center-of-mass energies of 8.16 and 5.02 TeV, respectively. The data were recorded by the CMS experiment and correspond to integrated luminosities of 186 and 0.607  nb−1 for the 𝑝⁢Pb and PbPb systems, respectively. A four-particle cumulant analysis is performed using subevents separated in pseudorapidity to effectively suppress noncollective effects. At high 𝑝T (𝑝T>8  GeV), significant positive 𝑣2 values that are similar between 𝑝⁢Pb and PbPb collisions at comparable charged particle multiplicities are observed. This observation suggests a common origin for the multiparticle collectivity for high-𝑝T particles in the two systems.
2025
Chekhovsky, V., Hayrapetyan, A., Makarenko, V., Tumasyan, A., Adam, W., Andrejkovic, J. w., et al. (2025). Evidence for Similar Collectivity of High Transverse-Momentum Particles in p -Pb and Pb-Pb Collisions. PHYSICAL REVIEW LETTERS, 135(7), 71903-1-071903-21 [10.1103/t5kp-vsv7].
Chekhovsky, V.; Hayrapetyan, A.; Makarenko, V.; Tumasyan, A.; Adam, W.; Andrejkovic, J.  w.; Benato, L.; Bergauer, T.; Chatterjee, S.; Damanakis, K.; ...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/1034576
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