Measurement of low mass dielectrons with the HBD upgrade of PHENIX

Mihael Makek, Awadhesh Kumar Dubey, Alexander Milov, Deepali Sharma, Itzhak Tserruya

Research output: Contribution to journalArticlepeer-review


The PHENIX experiment was upgraded with the Hadron Blind Detector (HBD) for the measurement of low-mass electron pairs. The HBD reduces the combinatorial background by providing additional electron identification in a field-free region close to the vertex and by exploiting the small opening angle of the pi(0) Dalitz and conversion pairs. The HBD was successfully operated during Run 9 and Run 10 at the RHIC in the measurements of e(+)e(-) pairs in p+p and Au+Au collisions, respectively. This paper reports on the present status of the dielectron analysis in Au+Au collisions at root s(NN) = 200 GeV.
Original languageEnglish
Article number124135
Number of pages4
JournalJournal Of Physics G-Nuclear And Particle Physics
Issue number12
StatePublished - Dec 2011


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