Speaker
Description
PHENIX has studied the production of muons from the semi-leptonic decay
of heavy-flavor mesons in the forward rapidity region 1.2<|eta|<2.2. The
measurement of heavy quark production in p+p collisions is important as
a baseline for studying hot and cold matter effects in heavy-ion
collisions, and is a test of pQCD theory. In p+Au collisions, we can
study cold-nuclear-matter (CNM) effects on heavy flavor production.
Measurement of charm and bottom yields will help to understand flavor
dependence of CNM effects. In 2015, a high-statistics dataset of p+p and
p+Au collisions wascollected with the Forward Silicon Vertex (FVTX)
detector in PHENIX at RHIC. The complete PHENIX silicon vertex tracking
system (VTX+FVTX) allows us to measure a precise primary vertex as well
as the radial distance of muon tracks to the collision vertex. The
distributions of radial distances for tracks from short-lived
heavy-flavor mesons ($D$ and $B$) and long-lived light-flavor mesons
($\pi^{\pm}$ and $K^{\pm}$) are sufficiently different to enhance the
signal-to-background ratio, and allow the separation between charm and
bottom. This poster reports the current status of heavy-flavor muon
analysis in p+p and p+Au collisions at 200 GeV with the PHENIX FVTX.
| Preferred Track | Open Heavy Flavors |
|---|---|
| Collaboration | PHENIX |
