Fluctuation Study of Fire-Balls with Quantized Masses

概要

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π-meson part of an SH-quantum is analysed by constructing simulated Acu-jet events and comparing them with Chacaltaya C-jet data (20TeV $lt;ΣE_γ<120TeV). For construction of simulation H-quanta, M_<H>C^2><=2.5GeV and kT_H=0.11GeV are assumed. The best-fit input parameter set which reproduces well the Chacaltaya Acu-jet data is: (i) simultaneous production of at least two SH-quanta with laboratory-frame Lorentz factor ratio 15 and negligible relative transverse motion, (ii) M^π_<SH^<C^2>>=15GeV, and (iii) kT_<SH> =0.70GeV and 0.17GeV for a cascade- and a direct-decaying SH-quantum, respectively. Simulation shows that the "fire-ball algorithm" gives a good estimate of the true γ-ray mass of the leading SH-quantum in an Acu-jet. Further, the simulation predicts different p_<T_<γ^->>-and "circularity" distributions for the cascade- and the direct-decay models for the SH-quantum, and the experimental data seem to prefer the former to the latter model.
理論物理学刊行会の論文
1983-11-21