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Characterizing the initial state and dynamical evolution in XeXe and PbPb collisions using multiparticle cumulantsстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Статья опубликована в журнале из списка Web of Science и/или Scopus- Авторы: Boos E.E., Bunichev V., Dubinin M., Dudko L., Ershov A.A., Gribushin A., Klyukhin V., Kodolova O., Petrushanko S., Savrin V., Snigirev A., CMS Collaboration
- Журнал: Physics Letters B
- Том: 876
- Год издания: 2026
- Издательство: Elsevier BV
- Местоположение издательства: Netherlands
- Первая страница: 140359
- DOI: 10.1016/j.physletb.2026.140359
- Аннотация: For the first time, correlations among mixed-order moments of two or three flow harmonics —(𝑣^𝑘_𝑛, 𝑣^𝑙_𝑚) and (𝑣^𝑘_𝑛, 𝑣^𝑙_𝑚, 𝑣^𝑞_𝑝), with 𝑘, 𝑙, and 𝑞 denoting the respective orders—are measured in xenon–xenon (XeXe) collisions and compared with lead–lead (PbPb) results, providing a novel probe of collective behavior in heavy ion collisions. These measurements compare a nearly spherical, doubly-magic 208Pb nucleus to a triaxially deformed 129Xe nucleus, emphasizing the sensitivity to initial-state geometry fluctuations arising from nuclear deformation. The dependence of these results (𝑣_𝑛, 𝑛 = 2, 3, 4) on the shape and size of the nuclear overlap region is studied. Comparisons between 𝑣_2, 𝑣_3, and 𝑣_4 demonstrate the importance of 𝑣_3 and 𝑣_4 in exploring the nonlinear hydrodynamic response of the quark-gluon plasma (QGP) to the initial spatial anisotropy. The results constrain initial-state model parameters that influence the evolution of the QGP. The CMS detector was used to collect XeXe and PbPb data at nucleon-nucleon center-of-mass energies of √𝑆_𝑁𝑁 = 5.44 and 5.36 TeV, respectively. Correlations are extracted using multiparticle mixed-harmonic cumulants (up to eight-particle cumulants) with charged particles in the pseudorapidity range |𝜂| < 2.4 and transverse momentum range 0.5 < 𝑝_𝑇 < 3 GeV/c.
- Добавил в систему: Клюхин Вячеслав Иванович
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