Peripheral and central nucleus-nucleus collisions at 4.2 GeV/c per nucleon

Agakishiev, H.; Abdinov, O.; Mekhdiev, R.R.; Suleimanov, M.K.; Ahababian, N.; Baatar, Ts.; Baldin, A.M.; Bartke, J.; Bogdanowicz, J.; Cheplakov, A.; Gasparian, A.P.; Grishin, V.G.; Ivanovskaya, I.A.; Kanarek, T.; Kladnitskaya, E.N.; Kondor, E.; Kopylova, D.K.; Kowalski, M.; Kvatadze, R.; Lyubimov, V.B.; Nikitina, V.F.; Soloviev, M. I.; Тонеев, В.Д.; Chasnikov, I.Ya.; Izbasarov, M.; Vinitsky, A.Kh.; Backović, S.; Damianović, V.; Drndarevic, S.; Krmpotic, D.; Krpić, D.; Simić, Lj.; Balea, E.; Balea, O.; Boldea, V.; Hacman, S.; Ponta, T.; Gudima, K. K.; Keloglu, Yu. P.; Anoshin, A.I.; Erofeeva, I.; Didenko, L.; Lyutov, S.I.; Mel'nikova, N.N.; Murzin, V. S.; Popova, V.M.; Sarycheva, L.; Shcheglova, L.M.; Smirnova, L. N.; Solomin, A.; Toneeva, G.P.; Korbel, Z.; Trka, Z.; Trkova, Ya.; Ismatova, F.A.; Muminov, M.M.; Suvonov, I.; Angelov, N.; Grekova, L.D.; Kerachev, P.P.; Semerdzhiev, H.; Temnikov, P.; Azimov, S.A.; Edgorov, S.O.; Inogamov, Sh.V.; Yuldashev, A. A.; Yuldashev, B. S.; Amaglobeli, N.S.; Григалашвили, Н.; Dasaeva, M.; Metreveli, Z.; Tevzadze, Yu.V.; Topuridze, M.V.; Tuvdendorzh, D.; Sharkhu, G.; Armutlijsky, D.; Kochnev, N.I.; Prokopieva, S.; Białkowska, H.; Arakelian, S. G.; Gulkanian, G.R.; Kirakosian, Z.A.; Korchagin, S.A.; Ravinovich, I.; Vartanian, V. A.

doi:10.1007/bf01577098

Cited by 12 publications

(3 citation statements)

References 18 publications

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“…Analysis of the experimental data leads to the following conclusions: if anomalons exist, their mean lifetime is %>5.10 -lls. Experimental investigations of the behaviour of cross sections for spectator PF's are being performed [21][22][23][24] by the collaboration on a treatment of pictures taken from the 2m propane (C3H8) bubble chamber (LHE, JINR) exposed to a beam of carbon nuclei at 4.2 GeV/c per nucleon. An indication has been obtained of an enhanced cross section for interactions of fragments with charges Z I=5 and 6 at distances of X__> 10 cm.…”

Section: Introductionmentioning

confidence: 99%

Anomalous carbon nuclei

Gasparian

Григалашвили

1985

Z Physik A

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Results are presented from a bubble chamber experiment to search for anomalous mean free path (MFP) phenomena for secondary multicharged fragments (Z I= 5 and 6) of a 12C beam at 4.2GeV/c per nucleon. A total of 50,000 primary interactions of carbon with propane (C3H8) were treated. Approximately 6,000 beam fragments with charges Z I--5 and 6 were analyzed in detail to search for an anomalous decrease of MFP. The anomaly is observed only for secondary carbon nuclei. The experiment has been performed at the Laboratory of High Energies, JINR.

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Section: Introductionmentioning

confidence: 99%

Anomalous carbon nuclei

Gasparian

Григалашвили

1985

Z Physik A

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“…1) (n+ -n_)>(Z~oj.~.~+ 1), 2) n~rotons(pla b < 0.75 GeV/c) > 1, 3) F/proton sbackward > 0, 4) n_ > 1 (for p C); n_ > 2 (for d, c~, and C--C interactions 5) ncharged = even (for p C and d C) …”

Section: Methodsmentioning

confidence: 97%

Multiplicity, momentum and angular distributions of protons from the interactions ofp, d, α andC with carbon at 4.2 GeV/c/nucleon momentum

Armutlisky

Bogdanowicz

Didenko

et al. 1987

Z. Physik A - Atomic Nuclei

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“…The contributions to the range of small energies are close to those for the total interval of yenergies. Figure 3 presents the distributions over the distance l (d< 1.5 cm) both for the events selected (circles e) and for the central collisions of carbon nuclei (triangles v) at 4.2 GeV/c per nucleon without any multicharged projectile fragments [7]. The background is shown as a histogram.…”

Section: Experimental Data Analysismentioning

confidence: 99%

?-production in peripheral interactions of relativistic carbon nuclei in propane and the anomalons problem

Cheplakov

Chubaryan

Gasparian

et al. 1986

Z. Physik A - Atomic Nuclei

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Peripheral interactions of 12C nuclei with protons and carbon nuclei have been investigated in a 2m propane bubble chamber at 4.2 GeV/c per nucleon. Energetic and angular characteristics of y-quanta accompanying the production of multicharged fragments with Zz=5 and 6 have been analyzed. It is shown that in the fragment rest system there is an excess of 7-quanta with e~<40MeV over the background from known sources (re ~ 7 decays, bremsstrahlung and nuclear excitation).

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Peripheral and central nucleus-nucleus collisions at 4.2 GeV/c per nucleon

Cited by 12 publications

References 18 publications

Anomalous carbon nuclei

Anomalous carbon nuclei

Multiplicity, momentum and angular distributions of protons from the interactions ofp, d, α andC with carbon at 4.2 GeV/c/nucleon momentum

?-production in peripheral interactions of relativistic carbon nuclei in propane and the anomalons problem

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