Naomichi Suzuki

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The evolution of charged-particle production in collisions of heavy ions at relativistic energies is investigated as function of centrality in a nonequilibrium-statistical framework. Precise agreement with recent d + Au and Au + Au data at √ s N N = 200 GeV is found in a Relativistic Diffusion Model with three sources for particle production. Only the(More)
To explain η-distributions at RHIC energies we consider the Ornstein-Uhlenbeck process. To account for hadrons produced in the central region, we assume existence of third source located there (y ≈ 0) in addition to two sources located at the beam and target rapidities (±ymax = ± ln [ √ sNN /mN ]). This results in better χ 2 /n.d.f. than those for only two(More)
Newly reported normalized cumulant moments of charged particles in e + e − collisions by the SLD collaboration are analyzed by the truncated modified negative binomial distribution (MNBD) and the negative binomial distribution (NBD). Calculated result by the MNBD describes the oscillatory behavior of the data much better than that by the NBD. Normalized(More)
Oscillatory behavior of cumulant moments obtained from the experimental data in pp collisions and ¯ pp collisions are analyzed by the modified negative binomial distribution (MNBD) and the negative binomial distribution (NBD). Both distributions well describe the cumulant moments obtained from the data. This fact shows sharp contrast to the result in e + e(More)
We developed a capillary chromatography system using a phase-separated solvent mixture as a carrier solution--i.e., a water-hydrophilic/hydrophobic organic solvent mixture--which we call "tube radial distribution chromatography" (TRDC). Here, we attempted to apply the TRDC system to a microchip incorporating microchannels with a double T-junction for(More)
We plan to measure exclusive single-meson and double-pion electroproduction cross sections off a proton target to study the nucleon resonances with the CLAS12 detector and the energy upgraded CEBAF beam. Exclusive final states will be measured including the identification of π 0 and η mesons by measuring the two decay photons as well as of charged(More)
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