327 research outputs found
Vorticity and particle polarization in heavy ion collisions (experimental perspective)
The recent measurements of the global polarization and vector meson spin
alignment along the system orbital momentum in heavy ion collisions are briefly
reviewed. A possible connection between the global polarization and the chiral
anomalous effects is discussed along with possible experimental checks. Future
directions, in particular those aimed on the detailed mapping of the vorticity
fields, are outlined. The Blast Wave model is used for an estimate of the
anisotropic flow effect on the vorticity component along the beam direction. We
also point to a possibility of a circular pattern in the vorticity field in
asymmetric, e.g. Cu+Au, central collisions.Comment: 8 pages, Proceedings of the invited talk at Strangeness in Quark
Matter 2017 Conference, Utrecht, Netherlands, July 201
Parity violation in hot QCD: how to detect it
In a recent paper (arXive:hep-ph/0406125) entitled {\em Parity violation in
hot QCD: why it can happen, and how to look for it}, D. Kharzeev argues for the
possibility of P- and/or CP- violation effects in heavy-ion collisions, the
effects that can manifest themselves via asymmetry in production
with respect to the direction of the system angular momentum. Here we present
an experimental observable that can be used to detect and measure the effects.Comment: 2 pages, no figure
Results on flow from the ALICE Collaboration
This short overview includes recent results from the ALICE Collaboration on
anisotropic flow of charged and identified particles in sqrt(sNN) = 2.76 TeV
Pb-Pb collisions. We also discuss charge dependent and event plane dependent
azimuthal correlations that are important in tests of the chiral magnetic
effect, as well as understanding the dynamics of the system evolution and
hadronization process. Lastly, we present ALICE results obtained with a new
technique, the event shape engineering, which allows to perform a physical
analysis on events with very large or small flow.Comment: 8 pages, to be published in Proceedings of the Quark Matter 2012
Conference, Washington D.C., August 201
Anisotropic flow of identified particles in Au+Au collisions at AGS energy
Anisotropic flow of protons, , , deuterons, tritons, He,
and He is analyzed as a function of transverse momentum for different
centralities of the collision.Comment: RevTex, 4 pages, 4 figures included as eps files. To be published in
the Proceedings of QM97, Tsukuba, Japa
- …