----- Research Field -----

Physics in High Energy Heavy Ion Collisions and Spin at RHIC

The purpose of high energy heavy ion collisions is study of bulk matter, that is extremely hot and dense. In that kind of status which is also expected in early universe and/or neutron star, the quarks and gluons can have a motion as a free particle and the status is called as Quark-Gluon Plasma (QGP). We have a evidence but still do not confirm any clear signal about existing of QGP.

The quarks and gluons are confined in the nuclei in the our world. The high energy heavy ion collisions can be only one way to make QGP on the earth. The final goal, of cause, is measurement of QGP but we didn't know what is the clear signal of QGP. Therefore, we need to understand physics in high energy heavy ion collisions. The experimental studies have been done since 1980's.

The experiments are at

Bevarac/Bevatron at Lawrence Berkeley National Laboratory (LBNL) USA,
Alternating Gradient Synchrotron (AGS) at Brookhaven National Laboratory (BNL) USA,
Super Proton Synchrotron (SPS) at European Organisation for Nuclear Research (CERN) Switzerland, and
Relativistic Heavy Ion Collider (RHIC) at BNL.

In 1994, I joined this field and attend to NA44 experiment at CERN when I was a graduate student in Hiroshima University in Japan. Also I have worked for Beam-Beam counter for PHENIX experiments at RHIC. After graduation, I become postdoc fellow physicist at High energy laboratory (KEK) in Japan and worked for Time-Of-Flight (TOF) detector for PHENIX for a while. I became one of collaborators of STAR experiment at RHIC as Postdoctoral Fellow Physicist of LBNL in 1999.

In 2002, I extend my field to spin physics at RHIC and has applied to a position at RIKEN-BNL Research Center (RBRC). I had obtained an offer from RBRC and accpeted it. From November 2002, I have been working for both physics of QGP and spin as a PHENIX collaborator.

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----- Research Field -----

Physics in High Energy Heavy Ion Collisions and Spin at RHIC