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тРЕхлУЧЕВыЕ ВжАИМОД ЕИстВИь π−-МЕжОНОВ с ИМпУльсОМ 4 GeV/c В пРОпАНОВОИ пУжыРь кОВОИ кАМЕРЕ |
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| Authors: | M Jireš M Novák V PetrŽílka |
| Institution: | M. Jire , M. Novák V. Petr ílka |
| Abstract: | Altogether 1648 cases of three-prong interaction of  –-mesons with a 4 GeV/c impulse were found on 90 000 pictures from a propane bubble chamber 55 × 28 × 14 cm3 in size; all three secondary particles were pions, two having a negative and one a positive charge. Analysis of these cases showed that at an impulse of 4 GeV/c of primary –-mesons the process of the coherent production of pions was not observed. On the other hand, this analysis led to an interesting result: (19 ± 9) % of the total number of (+, –) pairs in  A interactions is due to the decay of the meson  0  + + –. A value of
= (764 ± 36) MeV was obtained for the mass
of
mesons and
= (166 ± 55) MeV fort he width
of its resonance curve. Investigation of the distribution of masses
in the case in question gave no answer due to the insufficiently determined course of the background curve.On leave from:Institute of Physics, Czechosl. Acad. Sci., Lumumbova 1, Praha 8, Czechoslovakia. Joint Institute of Nuclear Research, Dubna, USSR. Institute of Physics, Czechosl. Acad. Sci., Lumumbova 1, Praha 8, Czechoslovakia. Faculty of Mathematics and Physics, Charles University, Brehová 7, Praha 1, Czechoslovakia.                  .  , .  , .  , .   .   , ,  . . . . |
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