Selecting specific initial configuration using spectator neutrons in U+U collisions

Abstract

We present a method to select events with specific initial configuration, namely body-tip, in heavy-ion collisions using deformed Uranium nuclei. We propose to use asymmetry in spectator neutron numbers to filter out these body-tip events from the unbiased configurations in U+U collisions. We have used a variable S_eta to differentiate between the body-tip and unbiased configurations. We have calculated the second order azimuthal anisotropy, namely elliptic flow (v2), for this body-tip configuration in the framework of a transport model and found it to be consistently lower compared to that in unbiased configurations as we expected. The purity of selecting such events in a real experiment is also discussed.

5 Pages and 4 figures, Accepted for publication in Physical Review C

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Cited by in corpus (6)

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• Pion, kaon, and (anti-)proton production in U+U Collisions at $\sqrt{s_{NN}}$ = 193 GeV measured with the STAR detector
• Study of charged particle production in $U$-$U$ collisions in a Wounded Quark Model
• Probing Pb+Pb collisions at $\sqrt{S_{NN}}=2760$ GeV with spectators
• An improved method to access initial states in relativistic heavy-ion collisions