Azimuthally sensitive correlations in nucleus-nucleus collisions

Abstract

We define a set of model-independent observables which generally characterize the azimuthal dependence of two-particle correlations in nucleus-nucleus collisions. We explain how they can be analyzed, and show to what extent such analyses are model dependent. We discuss specific applications to the anisotropic flow of decaying particles, azimuthally sensitive HBT, and correlations between particles at large transverse momentum. A quantitative prediction is made for jet quenching with respect to the reaction plane.

Partonic Flow andϕ-Meson Production inAu+AuCollisions atsNN=Abelev1, Aggarwal2, Ahammed3 et al. 2007Phys. Rev. Lett.1844600View full textAdd to dashboardCite

“…[24]. The method involves calculating the v 2 of the same-event distribution as a function of m inv and then fitting the resulting v 2 (m inv ) distribution using:…”

J/ψElliptic Flow in Pb-Pb Collisions atsNN=2.76 TeV

“…Therefore, only the VZERO-A was used for the EP determination to avoid autocorrelations. The J=c v 2 results were obtained determining v 2 ¼ hcos2ð À ÉÞi versus the invariant mass (m ) [26], where is the OS dimuon azimuthal angle. The resulting v 2 ðm Þ distribution is fitted using…”

“…Consistent v 2 values were obtained using an alternative method [23] in which the J=c raw yield is extracted, as described before, in bins of ( À É) and v 2 is evaluated by fitting the data with the function ðdN=dð À ÉÞÞ ¼ A½1 þ 2v 2 cos2ð À ÉÞ , where A is a normalization constant. As an additional check the first analysis procedure [26] was also applied to the same-sign (SS) dimuons. As expected, no J=c signal is seen in either the invariant mass distribution or the hcos2ð À ÉÞi as a function of m of SS dimuons.…”

Azimuthal anisotropy ofπ0andηmesons in Au + Au collisions atsNN=200GeV

“…[33][34][35]. In this method, the anisotropy of same-event or foreground (frg) pairs and mixed-events or background (bkg)…”