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| VOLUME 43 (1986) | ISSUE 9 | PAGE 401 |
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Nuclear-emulsion observation of the decay of a charmed Σc0 baryon Λc+π- followed by a Λc+ decay into Σ+π-π+
Ammar R. G., Ammosov V. V., Bakic A., Baranov V. I., Burnett T. H., Batusov Yu. A., Bunyatov S. A., Vaisenberg A. O., Wilkes R. J., Wilczinska B., Wilczinski G., Voyvodic L., Walter W., Wojczek B., Gapienko V.A., Gorichev P. A., Grass J., Daion M. I., Davis R. E. P., Egorov O. K., Ivanova M., Kwak N.,. Klyukhin V. I, Kolganova E. D., Koppage D., Koreshev V. I., Krziwdzinski S., Kuznetsov O. M., Lord J. J., Lyukov V. V., Makhlyueva I. V., Olshevski A. G., Pick L., Pitukhin P. V., Pozharova E. A., Reimer R., Rappoport V. M., Rosenbladt R., Rubin H. A., Sipotenko V. I., Slobodyuk E. A., Smart W., Smirnitskii V. A., Stump R., Tret'yak V. I., Chernev H., Shamanov V. V., Shevchenko V. G., Jurak A., Yarba V. A.
![](/ps/1407/article_21364_800_head.png "An event in which the decay of a charmed Σ° baryon into ì<sub>Ó</sub><sup>+</sup> and <i>ÔÇ~ </i>has been detected in a neutrino experiment with a nuclear emulsion is described. The decay of the ì<sub>Ó</sub><sup>+</sup> baryon occurs in the channel ì<sub>Ó</sub><sup>+</sup> —<i>>Σ<sup>+</sup>π~π<sup>+</sup> </i>with an observable subsequent decay of <i>Σ<sup>+</sup>^>π<sup>+</sup>η. </i>The mass of the ì<sub>Ó</sub><sup>+</sup> is 2.300 + 0.025 <i>GeV/c<sup>2</sup>, </i>and it decays in a time of (3.13 + 0.02) χ 10""<sup>13</sup> s. The mass of the Σ° baryon and the difference between the Σ° and ì<sub>Ó</sub><sup>+</sup> masses are 2.462 ± 0.026 GeV/c<sup>2</sup> and 0.163 + 0.002 GeV/c<sup>2</sup>, respectively.")
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