Speaker
Takashi Hachiya
(RIKEN)
Description
The bottom quark is a powerful probe to study the characteristics of
hot dense medium created in high energy heavy ion collisions.
A strong suppression of hadrons containing heavy quarks was observed
through the measurement of single electrons semi-leptonic decays.
To further understand phenomenon of heavy quark suppression,
the bottom and charm production needs to be measured separately.
The non-prompt J/$\psi $ from B decay (B $\to $ J/$\psi +$ X) is
a direct measurement of the bottom production.
The silicon vertex detector (VTX) enables us to identify
the B $\rightarrow$ J/$\psi $ through electron pairs
( J/$\psi \to $ e$^{+} + $ e$^{-})$
by measuring a secondary vertex position of the B decays.
In this poster, we will report the current status of the analysis
measuring the secondary vertex of electron
pairs from non-prompt J/$\psi $ decays in 200 GeV p$+$p and Au$+$Au collisions.
| On behalf of collaboration: | PHENIX |
|---|
Primary author
Takashi Hachiya
(RIKEN)
