Research output: Contribution to journal › Article › peer-review
Experimental study of relativistic hypernuclei using the HYBS-spectrometer. / HYBS.
In: Il Nuovo Cimento A Series 11, Vol. 102, No. 2, 08.1989, p. 645-652.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Experimental study of relativistic hypernuclei using the HYBS-spectrometer
AU - HYBS
AU - Abdurakhimov, A. U.
AU - Aksinenko, V. D.
AU - Anikina, M. H.
AU - Avramenko, S. A.
AU - Bannik, B. P.
AU - Butenko, V. A.
AU - Glagoleva, N. S.
AU - Golokhvastov, A. I.
AU - Grachev, A. G.
AU - Dementiev, E. A.
AU - Drozdov, V. A.
AU - Kaminsky, N. I.
AU - Khorozov, S. A.
AU - Kirillov, A. D.
AU - Kozubsky, E. V.
AU - Kulakov, B. A.
AU - Kuznetsov, A. A.
AU - Kuznetsova, E. S.
AU - Luboshitz, V. L.
AU - Lukstins, J. R.
AU - Mandrik, O. Yu
AU - Maniakov, P. K.
AU - Matushin, A. T.
AU - Matushin, V. T.
AU - Mukhin, S. V.
AU - Nikityuk, N. M.
AU - Okhrimenko, L. S.
AU - Okonov, E. O.
AU - Ostanevich, T. G.
AU - Radomanov, V. B.
AU - Rozhnyatovskaya, S. A.
AU - Rukoyatkin, P. A.
AU - Ryakhovsky, V. N.
AU - Saitov, I. S.
AU - Sedykh, S. A.
AU - Svetov, A. L.
AU - Vardenga, G. L.
AU - Zavialov, V. F.
AU - Belikov, Yu A.
AU - Kondratiev, V. P.
AU - Krasnov, L. V.
AU - Shevchenko, I. E.
AU - Stepanov, I. V.
AU - Gaevsky, K.
AU - Mirkovsky, Ya
AU - Pavlovsky, Z.
AU - Piatkovsky, A.
AU - Khusainov, E. K.
AU - Nurgozhin, N. N.
AU - Pol, Yu S.
PY - 1989/8
Y1 - 1989/8
N2 - The method and the results of an experiment on the study of relativistic Λ 4 H and Λ 3 H production in interactions of 18 GeV/c4He nuclei with CH2 target nuclei are presented. The experiment was performed using the HYBS-spectrometer. The main registering part of the spectrometer is a (2×0.6×1)m3 streamer chamber placed in a magnetic field of 0.9 T. The streamer chamber was triggered when the beam4He nucleus lost one charge unit in the target and then again became double-charged inside the chamber fiducial volume according to the selection criteria for Λ 3,4 H hypernucleus production and its mesonic decay with the He nucleus in the final state. After scanning of the pictures, measurements of two-prong events and careful analysis, events of the decays Λ 4 H→4He+π- and Λ 3 H→3He+π- were identified. The estimates of the Λ 4 H production cross-section (∼0.4 μb) and its mean lifetime (∼2.2·10-10s) were obtained. A comparison with the results of other experiments and theoretical calculations is made. By the way, the cross-section of the charge exchange reaction3H+Ne→3He+π-++...(∼1 mb) was estimated. The work has been performed at the Laboratory of High Energies, JINR, Dubna.
AB - The method and the results of an experiment on the study of relativistic Λ 4 H and Λ 3 H production in interactions of 18 GeV/c4He nuclei with CH2 target nuclei are presented. The experiment was performed using the HYBS-spectrometer. The main registering part of the spectrometer is a (2×0.6×1)m3 streamer chamber placed in a magnetic field of 0.9 T. The streamer chamber was triggered when the beam4He nucleus lost one charge unit in the target and then again became double-charged inside the chamber fiducial volume according to the selection criteria for Λ 3,4 H hypernucleus production and its mesonic decay with the He nucleus in the final state. After scanning of the pictures, measurements of two-prong events and careful analysis, events of the decays Λ 4 H→4He+π- and Λ 3 H→3He+π- were identified. The estimates of the Λ 4 H production cross-section (∼0.4 μb) and its mean lifetime (∼2.2·10-10s) were obtained. A comparison with the results of other experiments and theoretical calculations is made. By the way, the cross-section of the charge exchange reaction3H+Ne→3He+π-++...(∼1 mb) was estimated. The work has been performed at the Laboratory of High Energies, JINR, Dubna.
KW - 21.80 - Hypernuclei
UR - http://www.scopus.com/inward/record.url?scp=51249175382&partnerID=8YFLogxK
U2 - 10.1007/BF02734881
DO - 10.1007/BF02734881
M3 - Article
AN - SCOPUS:51249175382
VL - 102
SP - 645
EP - 652
JO - La Rivista del Nuovo Cimento
JF - La Rivista del Nuovo Cimento
SN - 0393-697X
IS - 2
ER -
ID: 88099077