Portal de Periódicos da CAPES

Artigo Acesso aberto Produção Nacional Revisado por pares

BIBTEX RIS

Measuring momentum-dependent flow fluctuations in heavy-ion collisions

2020; American Physical Society; Volume: 101; Issue: 3 Linguagem: Inglês

10.1103/physrevc.101.034903

2470-0002

Maurício Hippert, D. D. Chinellato, Matthew Luzum, Jorge Noronha, Tiago Nunes da Silva, J. Takahashi,

Particle physics theoretical and experimental studies

In heavy-ion collisions, momentum-dependent pair correlations can be characterized by a principal component analysis (PCA), in which subleading modes are expected to reveal new information on flow fluctuations. However, we find that, as currently measured, these modes can be dominated by multiplicity fluctuations, which serve as an unwanted background. Here, we propose new PCA observables that are robust against multiplicity fluctuations and isolate novel sources of flow fluctuations, thus being suited to provide fresh insight into the initial stages of the system at small length scales.