Measurement of Di-electron Continuum in Au+Au collisions at $\sqrt{s_{NN}}=200$ GeV by PHENIX using the Hadron Blind Detector

TL;DR

This paper reports on measurements of the dielectron continuum in Au+Au collisions at 200 GeV using the PHENIX detector with the Hadron Blind Detector, highlighting improved background rejection and new results from 2009 and 2010 data.

Contribution

The paper introduces the use of the Hadron Blind Detector in PHENIX for dielectron measurements, enhancing background rejection in heavy ion collision analysis.

Findings

Successful measurement of dielectron continuum in Au+Au collisions

Demonstrated improved background suppression with the Hadron Blind Detector

Presented new results from 2009 p+p and 2010 Au+Au collision data

Abstract

Dielectrons play an important role in heavy ion collisions since they are produced during all stages of the collision and interact only electromagnetically. The PHENIX experiment was upgraded with the Hadron Blind Detector which provides excellent background rejection by removing pairs from both partially reconstructed Dalitz decays and photon conversions. In these proceedings we will report on the results obtained from 2009 data in p+p collisions using the HBD as well as the Au+Au results obtained in 2010.