140 citations · 495 across the 56 of their papers we have counts for
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The Excess of HERA High Events and Leptoquarks in a Left-Right Symmetric Preon Model
Motoo Sekiguchi, Hiroaki Wada, Shin Ishida
An interpretation that the HERA excess events are due to intermediate production and decay of composite leptoquarks in the left-right symmetric preon model is given. Because of the…
Relation between Scattering and Production Amplitude - Case of Intermediate σ-Particle in ππ-System
Muneyuki Ishida, Shin Ishida, Taku Ishida
The relation between scattering and production amplitudes are investigated, using a simple field theoretical model, from the general viewpoint of unitarity and the applicability of…
σ-Particle in Production Processes
Kunio Takamatsu, Muneyuki Ishida, Shin Ishida +2
A S-wave ππresonance below 1 GeV/c^2, sigma has been observed in analyses of the phase shift data of ππscatterings. It is important to observe it in production processes. A huge ev…
Re-analysis of ππ/ KπPhase Shift and Existence of σ$(600) / κ(900)-Particle
Taku Ishida, Muneyuki Ishida, Shin Ishida +2
Re-analyzing the old phase shift data of I=0, ππ(I=1/2, Kπ) scattering, we show an evidence for existence of the σ-particle (κ-particle) with a comparatively light mass, which has…
On existence of the σ(600) - Its physical implications and related problems
Shin Ishida
We make a re-analysis of I=0 ππscattering phase shift δ_0^0 through a new method of S-matrix parametrization (IA; interfering amplitude method), and show a result suggesting strong…
Analysis of Kπ-scattering phase shift and existence of κ(900)-particle
Shin Ishida, Muneyuki Ishida, Taku Ishida +2
Recently we have shown an evidence for existence of σ-particle in the previous works; where the ππS-wave phase shift is reanalyzed, by introducing a repulsive background suggested…