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Start Over Author "Y. Vazdik" Journal czechoslovak journal of physics
6 results on '"Y. Vazdik"'

1. A-dependence of inclusive Φ-meson production in neutron-nucleus interactions at 30–70 GeV

Author

Georgi Sultanov, A. Prokes, M. V. Zavertyaev, V. R. Krastev, A. M. Fomenko, H. E. Ryseck, M. Smižanská, P.T. Todorov, A.F. Kamburian, H. Nowak, L. N. Shtarkov, V. P. Balandin, T.G. Pitskhelauri, A. S. Chvyrov, L. A. Slepets, Petr Moisenz, K. Hiller, A. N. Morozov, G.I. Nikobadze, A.I. Zinchenko, V. V. Rybakov, Mikhail Kapishin, M. S. Chargeishvili, V. D. Cholakov, S. Yu. Potashev, V. K. Berdyshev, V. A. Kozlov, V.K. Birulev, D. A. Kirillov, R. A. Kvatadze, D. T. Burilkov, I. G. Kosarev, V. Arefiev, E. I. Malinovski, N.S. Amaglobeli, N.A. Kuzmin, Rezo Shanidze, V. J. Zayachky, T.S. Grigalashvili, B.N. Gus'kov, E. A. Chudakov, I. M. Ivanchenko, T.B. Progulova, J. Klabuhn, E. G. Devitsin, I. I. Evsikov, N.N. Karpenko, J. Hladký, P. A. Smirnov, A. A. Loktionov, Yu. Potrebenikov, V. D. Kekelidze, M. F. Likhachev, Y. Soloviev, A. N. Maksimov, N. O. Kadagidze, S. Nowak, G.A. Kvirikashvili, N.L. Lomidze, G. V. Melitauri, A. N. Aleev, A.S. Belousov, Sergey Rusakov, R. Trayanov, P. K. Markov, L.N. Abesalashvili, A. V. Pose, A.L. Lyubimov, V.V. Palchik, G.T. Tatishvili, M. Vecko, Y. Vazdik, and M. Novak

Subjects
Physics, Nuclear physics, Nuclear reaction, Particle physics, Effective mass (solid-state physics), Meson, Hadron, General Physics and Astronomy, Elementary particle, Neutron, Nuclear Experiment, Quarkonium, Boson
Abstract

The production of Φ-mesons on nuclear targets (carbon, aluminium and copper) by high-energy neutrons has been analysed. The dependence of the Φ-production cross section ratios on the nuclear mass numberA was parametrized by the power lawA α withα=0.81±0.06. Within the sensitive kinematic rangex F>0 andp T

Published
1992

2. Search for the charmed strange baryon Ξ c + in neutron-proton interactions at √S ≈ 10 GeV

Author

P.T. Todorov, A. V. Pose, L. N. Shtarkov, N.S. Amaglobeli, A.F. Kamburian, A. N. Aleev, P.K. Markov, A. A. Loktionov, V. J. Zayachky, M. F. Likhachev, Vladimir Kekelidze, R. G. Shanidze, N.A. Kuzmin, M. Vecko, Yu. Potrebenikov, J. Krásová, V. Arefiev, S.Yu. Potashov, V. K. Berdyshev, J. Hladký, M. V. Zavertyaev, A. M. Fomenko, Y. Soloviev, A. N. Maksimov, B.N. Gus'kov, Y. Vazdik, M. Novak, A.S. Belousov, V. I. Skorobogatova, V. R. Krastev, Sergey Rusakov, E. G. Devitsin, N.L. Lomidze, V.K. Birulev, I. G. Kosarev, E. A. Chudakov, M. Smižanská, A.L. Lyubimov, D. A. Kirillov, R. A. Kvatadze, E. I. Malinovski, Mikhail Kapishin, G. Tatishvili, V. P. Balandin, A. S. Chvyrov, L. A. Slepets, A. N. Morozov, and A. Prokes

Subjects
Nuclear physics, Baryon, Physics, Hydrogen, chemistry, Spectrometer, Meson, Proton, General Physics and Astronomy, chemistry.chemical_element, Neutron, Neutron radiation
Abstract

In this paper we present the results of a search for the charmed strange baryon Ξc+ in the final states Λ0π+π+K− and Ξ−π+π+. The experiment was performed using the magnetic spectrometer BIS-2 with a hydrogen target located in the neutron beam of the Serpukhov accelerator. A narrow peak in the Λ0π+π+K− state is observed at a mass of ≈2440 and possibly also of ≈2310 MeV/c2, corresponding to signals for the Ξc+ → Λ0π+π+K− and Ξc+ → Σ0π+π+K− (Σ0 → Λ0γ) decays respectively. The statistics obtained for the Ξ−π+π+ state is too low to make any conclusion.

Published
1991

3. Diffractive dissociation reaction np → Λ0K0p for incident neutron momenta between 30 and 70 GeV/c

Author

L. I. Abashidze, A. A. Loktionov, V. J. Zayachky, M. N. Voichishin, Petr Moisenz, J. Pazonyi, Y. Soloviev, A. N. Maksimov, V. Arefiev, H. Nowak, M. F. Likhachev, L. N. Shtarkov, I. I. Evsikov, V. D. Cholakov, A. S. Chvyrov, Georgi Sultanov, S.Yu. Potashov, G. V. Melitauri, G.I. Nikobadze, S. Nowak, V. P. Dzhordzhadze, P. Zalan, L. A. Slepets, I. Veres, T. B. Progulova, I. Ya. Chasnikov, V. D. Kekelidze, N.A. Kuzmin, G. T. Tatashvili, Yu. Potrebenikov, A. N. Aleev, V. R. Krastev, K. Hiller, Adel Terkulov, V. K. Berdyshev, A. F. Kamburian, A. M. Fomenko, J. Hladký, V.K. Birulev, I. G. Kosarev, A. N. Morozov, N. O. Kadagidze, P. K. Markov, G. G. Takhtamyshev, Y. Vazdik, V. V. Pavlovskaya, L.N. Abesalashvili, D. T. Burilkov, A. V. Pose, H. E. Rysek, V.E. Simonov, A.S. Belousov, E. A. Chudakov, Sergey Rusakov, N.L. Lomidze, R. Trayanov, N.N. Karpenko, B.N. Gus'kov, I. M. Ivanchenko, E. I. Malinovski, N. V. Vlasov, E. G. Devitsin, M. S. Chargeishvili, M. Novak, V.V. Palchik, V. D. Nazarenko, A.L. Lyubimov, T.S. Grigalashvili, V. P. Balandin, Rezo Shanidze, M. V. Zatertyaev, M. Smižanská, T. G. Pitskchelauri, P. A. Smirnov, M. V. Petrov, V. B. Sliusareva, M. Vecko, P.T. Todorov, L.V. Sil'vestrov, D. A. Kirillov, R. A. Kvatadze, A. Prokes, Yu. Klabun, N.S. Amaglobeli, V. I. Skorobogatova, and M. N. Kapishin

Subjects
Nuclear physics, Baryon, Physics, Particle physics, Meson, Hadron, Hyperon, General Physics and Astronomy, Neutron, Rest frame, Lambda baryon, Nucleon
Abstract

We present results of the exclusive diffractive reaction np → Λ0K0p at 0·08 < |t|< 0·53 GeV2/c2 and momenta between 30–70 GeV/c at the Serpukhov neutron beam. Thet-dependence is exp (Bt) withB= 11·4± 2·3 (GeV/c)−2 and it exhibits the diffractive minimum at ¦t¦ 0·28 GeV2/c2 for Λ0K0 massesM < 1·8 GeV/c2.B decreases with increasingM. Correlation with the beam direction is observed in the rest frame of the Λ0K0 system: the cross section rises for the forward-going Λ0. The rise is more pronounced for higherM. The cross section of reaction np → Λ0K0p for 0

Published
1990

4. Inclusive production of φ-mesons in neutron-proton interaction at 30–70 GeV/c

Author

V. P. Balandin, P. A. Smirnov, J. Pazonyi, A. N. Aleev, M. S. Chargeishvili, J. Klabuhn, I. Veres, E. A. Chudakov, M. Novak, I. M. Ivanchenko, L. N. Shtarkov, T.B. Progulova, Georgi Sultanov, M. F. Likhachev, M. V. Zavertyaev, V. R. Krastev, A. M. Fomenko, H. E. Ryseck, B.N. Gus'kov, Adel Terkulov, E. G. Devitsin, H. Nowak, N.L. Lomidze, V. P. Dzhordzhadze, P. K. Markov, A. Prokes, J. Hladký, M. Smižanská, G.I. Nikobadze, R. Trayanov, L.N. Abesalashvili, T.G. Pitskhelauri, Petr Moisenz, Y. Soloviev, A. N. Maksimov, N.A. Kuzmin, A. S. Chvyrov, N.S. Amaglobeli, L. A. Slepets, V. A. Kozlov, D. T. Burilkov, V.K. Birulev, S. Nowak, I. G. Kosarev, V.V. Palchik, A. N. Morozov, P. Zalan, E. I. Malinovski, Rezo Shanidze, S.Yu. Potashov, N.N. Karpenko, G.T. Tatishvili, A.L. Lyubimov, V. V. Rybakov, V. D. Cholakov, D. A. Kirillov, Yu. Potrebenikov, R. A. Kvatadze, A. I. Zinchenko, M. N. Kapishin, G. V. Melitauri, T.S. Grigalashvili, A. V. Pose, P.T. Todorov, Y. Vazdik, A. A. Loktionov, V. I. Zayachky, M. Vecko, I. I. Evsikov, V. D. Kekelidze, A.S. Belousov, Sergey Rusakov, K. Hiller, N. O. Kadagidze, V. Arefiev, A. F. Kamburyan, and V. K. Berdyshev

Subjects
Physics, Nuclear physics, Momentum, Particle decay, Proton, Meson, Hadron, General Physics and Astronomy, Elementary particle, Neutron, Nuclear Experiment, Quarkonium
Abstract

A signal of theΦ-K+K− decays has been observed in neutron-hydrogen interactions at energies of 30–70 GeV in an experiment using the BIS-2 spectrometer. The longitudinal momentum spectrum in the forward region,xF

Published
1990

5. Observation of $$\bar D$$ -mesons innC interactions at 40–70 GeV/c

Author

B.N. Gus'kov, E. G. Devitsin, Adel Terkulov, E. I. Malinovsky, D. A. Kirillov, I. I. Evsikov, P. D. Todorov, J. Hladký, M. F. Likhachev, L. N. Shtarkov, K. Hiller, M. Novak, G.I. Nikobadze, A. Prokes, R. Trayanov, V. K. Berdyshev, N.L. Lomidze, M. Vecko, M. N. Voichishin, M. V. Tosheva, T.S. Grigalashvili, A. S. Chvyrov, Y. Soloviev, A. N. Maksimov, N. V. Vlasov, A. V. Pose, L. A. Slepets, V. D. Kekelidze, M. Smižanská, A.L. Lyubimov, V.V. Palchik, S. Nowak, Rezo Shanidze, M. V. Zavertyaev, V. P. Krastev, V. A. Kozlov, A. M. Fomenko, V.K. Birulev, M. N. Kapishin, L.V. Sil'vestrov, H. E. Ryseck, I. G. Kosarev, I.N. Kakurin, V. P. Balandin, V. D. Cholakov, V. Arefiev, A.S. Belousov, Sergey Rusakov, N.A. Kuzmin, Petr Moisenz, A. N. Aleev, E. A. Chudakov, I. M. Ivanchenko, P. K. Markov, N.N. Karpenko, V. J. Zayachky, N.S. Amaglobeli, A. N. Morozov, Y. Vazdik, G. G. Takhtamyshev, G. Sultanov, H. Nowak, V. P. Dzhordzhadze, V. V. Pavlovskaya, V.E. Simonov, and D. T. Burilkov

Subjects
Physics, Particle physics, Meson, Transverse momentum, General Physics and Astronomy, High Energy Physics::Experiment, Neutron, Production (computer science), Nuclear Experiment, Spectral line, Bar (unit), Effective mass (spring–mass system)
Abstract

We have observed the production of $$\bar D^0 $$ andD − mesons in neutron carbon interactions at 40–70 GeV/c. The experiment was performed with the spectrometer BIS-2 located in the neutron beam 4N of the Serpukhov accelerator. The signals of $$\bar D$$ mesons were detected in the effective mass spectraM(K + (890)π −) andM(K +(890)π − π −). The kinematical region of detected $$\bar D$$ mesons is 30 GeV/c < pL < 60 GeV/c andp T < 1 GeV/c. For this region the partial cross sections are $$\sigma (n + C \to \bar D^0 + X)$$ . $$BR(\bar D^0 \to K^ + (890)\pi ^ - ) = (0 \cdot 9 \pm 0 \cdot 3)\mu b$$ andσ(n +C→ D − +X).BR(D − →K +(890) π−π−) = (2·1 ± 0·7) μb. The longitudinal momentum spectrum in the regionx > 0·5 can be described byF(x) ∼ (1 − x) N with $$N_{\bar D^0 } = 1 \cdot 1 \pm 0 \cdot 5 \pm 0 \cdot 4$$ and $$N_{D^ - } = 0 \cdot 8 \pm 0 \cdot 4 \pm 0 \cdot 4$$ . The transverse momentum spectra were parametrized by the exponential function dσ/dp T 2 ∼ exp (-Bp T 2 ) with $$B_{\bar D^0 } = (1 \cdot 4 \pm 0 \cdot 7)({{GeV} \mathord{\left/ {\vphantom {{GeV} c}} \right. \kern-\nulldelimiterspace} c})^{ - 2} $$ and $$B_{D^ - } = (1 \cdot 7 \pm 0 \cdot 8)({{GeV} \mathord{\left/ {\vphantom {{GeV} c}} \right. \kern-\nulldelimiterspace} c})^{ - 2} $$ .

Published
1986

6. Production of the charmed baryon Λ c + in neutron-proton interactions

Author

V. P. Balandin, R. Trayanov, N. V. Vlasov, N.A. Kuzmin, V.E. Simonov, B.N. Gus'kov, E. G. Devitsin, P. A. Smirnov, A. V. Pose, A.L. Lyubimov, T. B. Progulova, H. E. Rysek, A. S. Chvyrov, L. A. Slepets, Y. Soloviev, A. N. Maksimov, M. V. Petrov, I. Ya. Chasnikov, Y. Vazdik, I. I. Evsikov, S. Nowak, Georgi Sultanov, M. V. Zavertyaev, G. G. Takhtamyshev, A. N. Morozov, J. Krásová, A. M. Fomenko, V. K. Berdyshev, G. T. Tatashvili, M. Vecko, L. N. Shtarkov, O. Balea, V. B. Sliusareva, K. Hiller, J. Hladký, N.S. Amaglobeli, V. R. Krastev, Adel Terkulov, Rezo Shanidze, M. S. Chargeishvili, V.V. Palchik, G.I. Nikobadze, N. O. Kadagidze, V. D. Nazarenko, E. A. Chudakov, A. A. Loktionov, L.V. Sil'vestrov, T. Ponta, I. M. Ivanchenko, H. Nowak, P. V. Moisens, V. P. Dzhordzhadze, D. A. Kirillov, P. Zalan, M. N. Voichishin, V. Arefiev, L. I. Abashidze, V. D. Cholakov, A. F. Kamburian, N.N. Karpenko, T.S. Grigalashvili, E. I. Malinovski, Yu. Potrebenikov, V. D. Kekelidze, R. A. Kvatadze, J. Pazonyi, V. V. Pavlovskaya, D. T. Burilkov, A. Prokes, I. Veress, T. G. Pitskchelauri, Yu. Klabun, V. J. Zayachky, N.L. Lomidze, M. Novak, V.K. Birulev, I. G. Kosarev, Sergey Rusakov, P.T. Todorov, V. I. Skorobogatova, M. N. Kapishin, G. V. Melitauri, M. F. Likhachev, A. S. Pelousov, M. Smižanská, A. N. Aleev, P. K. Markov, L.N. Abesalashvili, and S.Yu. Potashov

Subjects
Baryon, Nuclear physics, Charmed baryons, Physics, Particle decay, Proton, Branching fraction, Hadron, Mass spectrum, General Physics and Astronomy, Neutron, Atomic physics
Abstract

In this paper we study the inclusive production of the charmed baryon Λ c + in interactions of 40–70 GeV/c neutrons with protons of hydrogen target. The experiment has been performed with the use of magnetic spectrometer BIS-2 located in the neutron beam of Serpukhov accelerator. The signal of Λ c + is observed in the effective mass spectra of Λ°π+π+π−. After the removal of interactions occurring on the container of liquid hydrogen, the signal consists of 14 combinations corresponding to ≈4 standard deviations of background. Its mean value is 2262 MeV/c2, width of the bin containing signal is 20 MeV/c2. On the basis of this signal we determine the value of cross section of Λ c + production times the branching ratio of its observed decay modeσ. Br (Λ c + → Λ°π+π+π−)=0·26±0·11 μb in the kinematic region ofx F>0·5 andp T

Published
1989

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