Charged hadron elliptic anisotropies (𝑣2 ) are presented over a wide transverse momentum (𝑝T ) range for proton-lead (𝑝Pb ) 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 𝑝Pb 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 𝑝Pb 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.
Evidence for Similar Collectivity of High Transverse-Momentum Particles in 𝑝-Pb and Pb-Pb Collisions
Alexe, C.;Bruschini, D.;
2025
Abstract
Charged hadron elliptic anisotropies (𝑣2 ) are presented over a wide transverse momentum (𝑝T ) range for proton-lead (𝑝Pb ) 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 𝑝Pb 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 𝑝Pb 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.| File | Dimensione | Formato | |
|---|---|---|---|
|
t5kp-vsv7.pdf
accesso aperto
Tipologia:
Published version
Licenza:
Creative Commons
Dimensione
1.24 MB
Formato
Adobe PDF
|
1.24 MB | Adobe PDF |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.



