Katsushi Arisaka

High Energy and Astro-particle Experiments

Office: 4-145 Knudsen
Phone: (310) 825-4925
Fax: (310) 206-1091
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Educational Background:

• Ph.D., University of Tokyo, Japan. 1985
• Research Investigator, University of Pennsylvania. 1985-1988
• Assistant Professor, Department of Physics UCLA. 1988-1991
• Associate Professor, Department of Physics UCLA. 1991-1995
• Professor, Department of Physics and Astronomy UCLA. 1995-Present

Research Interest:

My prime interest is to understand the origin of the Universe. In particular, I am interested in how Universe was evolved at its earliest stage. As a high-energy experimentalist, I have been conducting several researches in various national laboratories as well as in a desert in Utah.

• Kaon Rare decays and CP violation.
  One of the unsolved mystery is the asymmetry of matter and anti-matter. At Fermi National Lab, my research group has been carrying the experiment, KTeV (Kaon at Tevatron) to understand the origin of CP-violation in Kaon decays by measuring the parameter, called e/e'. We have recently published the first evidence in Phys. Rev. Lett. 83, 22 (1999) (available at hep-ex/9905060.)
• Ultra High Energy Cosmic Ray Experiments. Occasionally, our earth is struck by extremely high energy particles as high as 1020 eV. Recently, I have started a new research activity to study the ultra high-energy cosmic rays. I have joined the round-based experiment, HiRes at Utah, Pierre-Auger in Argentina and the future experiment in space, OWL. At the same time, I am currently leading the effort to form an international collaboration between Japanese Telescope Array and the US based Hires group, Telescope Array (TA) experiment, with a possible collation with the Northern Pierre-Auger detector. The unified experimental efforts are well described here: Cosmic Ray Experiment.
• Hadron Collider Experiment.
  The most direct method to study the highest energy phenomena is by colliding particles artificially by a accelerator. I am a member of the CMS (Compact Muon Solenoid) collaboration which is expected to start data taking in year 2005 at CERN.

Selected Recent Publications:

• View a list of selected recent publications.