8 citations · 23 across the 5 of their papers we have counts for
5 papers
Development of a Laser Wire Beam Profile Monitor (I)
Yutaka Sakamura, Yasuo Hemmi, Hiroaki Matsuo +6
A conceptual design work and a basic experimental study of a new beam profile monitor have been performed. The monitor will be used to measure emittance of an electron beam in the…
Experimental search for the decay mode K_L -> pi^0 gamma e^+ e^-
K. Murakami, Y. Hemmi, H. Kurashige +11
We report on results of a search for the decay mode K_L -> pi^0 gamma e^+ e^- conducted by the E162 experiment at KEK. We observed no events and set a 90% confidence level upper li…
A handy method to monitor outputs from a pulsed light source and its application to photomultiplier's rate effect studies
Y. Takeuchi, Y. Hemmi, H. Kurashige +11
In order to study photomultiplier's short-term gain stability at high counting rate, we constructed an LED pulsed light source and its output monitor system. For the monitor system…
Observation of the decay mode K_L -> pi^+ pi^- e^+ e^-
Y. Takeuchi, Y. Hemmi, H. Kurashige +11
We report on results of an experimental search for the K_L -> pi^+ pi^- e^+ e^- decay mode. We found 13.5 +- 4.0 events and determined its branching ratio to be (4.4 +- 1.3(stat) +…
Measurement of tau polarization in e+ e- annihilation at sqrt{s}=58 GeV
H. Hanai
The polarization of tau leptons in the reaction e+ e- --> tau+ tau- has been measured using a e+e- collider, TRISTAN, at the center-of-mass energy of 58 GeV. From the kinematical d…