Speaker
Mr
Hiroshi Nakagomi
(Univ. of Tsukuba)
Description
In heavy-ion collisions, measurement of azimuthal anisotropy in emitted
particle momentum distribution is a one of the important themes for the
investigation of Quark Gluon Plasma (QGP). For this measurements,
we need to be able to measure the reference reaction/event planes
direction with good accuracy.
In 2011 the Silicon Vertex detector (VTX) was installed in the
RHIC-PHENIX experiment. The VTX is composed of four layers,
in which the inner two layers are built with pixel detectors
and the outer two layers are built with strip detectors.
The VTX can reconstruct charged particle tracks and identify
hadrons that include c/b-quark. The reaction plane reconstructed
using the VTX is expected to have good resolution due to the wide η
acceptance of the detector, -1 to +1. One of the main
purposes of VTX detector is to enable the measurement of the
second and higher-order azimuthal anisotropy (v2,v3) of heavy quarks.
In this presentation, we will discuss the performance of the VTX
detector in reaction plane resolution, as well as event plane
correlations between different harmonic orders and between silicon
and non-silicon detectors which have different η acceptance.
The η dependence of higher order anisotropy will also be shown as
part of a detailed investigation of non-flow effect as a function of η-
gap.
| Keywords | VTX, flow, |
|---|
Author
Mr
Hiroshi Nakagomi
(Univ. of Tsukuba)
