A Possible Interpretation of the New Event in the Cosmic Ray Experiment. II

Hayashi, Takemi; Kawai, Ei-ichiro; Matsuda, Masahisa; Ogawa, S.; Shige-eda, Shinsei

doi:10.1143/ptp.47.1998

Cited by 16 publications

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Immediately after the discovery of this new particle, S. Ogawa, who led a branch of S. Sakata’s school of thought, pointed out that this new particle might comprise the fourth quark, p'. 12 ) This idea was first introduced into the New Nagoya model in 1962 13 ) and was now called “charm” after being named by B.J. Bjorken and S.L.…”

Section: The Attribution Of the New Particle To The Fourth Quark (Chamentioning

confidence: 99%

Discovery of naked charm particles and lifetime differences among charm species using nuclear emulsion techniques innovated in Japan

Niu

2008

Proceedings of the Japan Academy. Ser. B: Physical and Biologic

View full text Add to dashboard Cite

This is a historical review of the discovery of naked charm particles and lifetime differences among charm species. These discoveries in the field of cosmic-ray physics were made by the innovation of nuclear emulsion techniques in Japan. A pair of naked charm particles was discovered in 1971 in a cosmic-ray interaction, three years prior to the discovery of the hidden charm particle, J/Ψ, in western countries. Lifetime differences between charged and neutral charm particles were pointed out in 1975, which were later re-confirmed by the collaborative Experiment E531 at Fermilab. Japanese physicists led by K.Niu made essential contributions to it with improved emulsion techniques, complemented by electronic detectors. This review also discusses the discovery of artificially produced naked charm particles by us in an accelerator experiment at Fermilab in 1975 and of multiple-pair productions of charm particles in a single interaction in 1987 by the collaborative Experiment WA75 at CERN.

show abstract

Section: The Attribution Of the New Particle To The Fourth Quark (Chamentioning

confidence: 99%