Search for narrow baryonia with negative and positive strangeness

Autor: Rumen Trayanov, N.S. Amaglobeli, R.G. Shanidze, M. F. Likhachev, Yu. Potrebenikov, I. Veress, Y. Soloviev, A. N. Maksimov, A. A. Loktionov, A. Zinchenko, V. P. Balandin, B.N. Gus'kov, D. T. Burilkov, E. G. Devitsin, Petr Moisenz, V. Arefiev, M. S. Chargeishvili, M. V. Zavertyaev, V. I. Skorobogatova, M. N. Kapishin, G.I. Nikobadze, V.V. Palchik, I. I. Evsikov, N.L. Lomidze, V. D. Kekelidze, P. A. Smirnov, V. V. Rybakov, G.T. Tatishvili, N.A. Kuzmin, A.L. Lyubimov, J. Haladky, T.S. Grigalashvili, A. S. Chvyrov, V. R. Krastev, A. M. Fomenko, P. Zalan, G. V. Melitauri, I. Pazoni, A. F. Kamburyan, L. A. Slepets, A.S. Belousov, Sergey Rusakov, L. N. Shtarkov, V. K. Berdyshev, Ya. A. Vazdyk, D. A. Kirillov, A. Prokes, R. A. Kvatadze, E. A. Chudakov, M. Novak, I. M. Ivanchenko, A. V. Pose, E. I. Malinovsky, T.B. Progulova, T.G. Pitskhelauri, V. A. Kozlov, V. D. Cholakov, V.K. Birulev, S. Yu. Potashev, N. O. Kadagidze, M. Smizanska, Adel Terkulov, P. T. Todorov, A. N. Morozov, N. N. Karpenko, M. Vetsko, V. I. Zayachky, A. N. Aleev, P. K. Markov, L.N. Abesalashvili, I. Kosarev
Rok vydání: 1990
Předmět:
Zdroj: Zeitschrift f�r Physik C Particles and Fields. 47:533-537
ISSN: 1434-6052
0170-9739
Popis: A search for baryonia with negative and positive strangeness decaying respectively into\(\Lambda + \bar p + pions\) and\(\bar \Lambda + p + pions\) has been carried out in a neutron beam with a mean momentum of ≅40 GeV/c in an experiment performed at the Serpukhov accelerator. There is a strong indication of the existence of these baryonia. The following four charge states are observed for negative and positive strangeness: neutral, negative, positive and doubly charged. Their mean mass is 3055±25 MeV/c2 and the width Γ≦36±15 MeV/c2. The data show that the isotopic spin of the baryonia is ≧3/2. The baryonia production cross sections in the acceptable kinematic regionXF≧0.2 andPT≦1 GeV/c times the branching ratios of the observed decays are of the order of 1 μb per nucleon.
Databáze: OpenAIRE
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