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1. Associated production of φ-mesons and strange particles and double φ-meson production

Author

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

Subjects
Physics, Particle physics, Meson, High Energy Physics::Phenomenology, Nuclear Theory, Hadron, General Physics and Astronomy, Elementary particle, Quarkonium, Pair production, Mass spectrum, High Energy Physics::Experiment, Neutron, Nuclear Experiment, Boson
Abstract

Associated production ofφ-mesons and strange particles by neutrons at energies of 30–70 GeV has been analysed. It has been found that at least 67% of inclusiveφ-meson production in the kinematic regionx F>0.1 andp T

Published
1992

2. 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

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. Search for narrow baryonia with negative and positive strangeness

Author

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, and I. Kosarev

Subjects
Physics, Particle physics, Physics and Astronomy (miscellaneous), Meson, Nuclear Theory, Hadron, Strangeness, Lambda baryon, Nuclear physics, Pair production, Pion, Isospin, High Energy Physics::Experiment, Nuclear Experiment, Nucleon, Engineering (miscellaneous)
Abstract

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.

Published
1990

5. 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

6. OBSERVATION OF CHARMED BARYONS Σc AND DECAY or $ \Lambda _c^ + \to \sum ^O \pi ^ + \pi ^ + \pi ^ - $ IN NEUTRON-PROTON INTERACTIONS AT THE SERPUKHOV ACCELERATOR

Author

Adel Terkulov, B.N. Gus'kov, E. G. Devitsin, M. Novak, I. Pazoni, A.S. Belousov, Sergey Rusakov, V. A. Aretiev, A. V. Pose, M. F. Likhachev, H. Novak, A. Prokes, M. S. Chargeishvili, V. P. Balandin, V. A. Kozlov, V.K. Birulev, A. S. Chvyrov, P.T. Todorov, I. G. Kosarev, Y. Soloviev, A. N. Maksimov, L. A. Slepets, T.G. Pitskhelauri, Rezo Shanidze, V. I. Zayachky, N.N. Karpenko, N.S. Amaglobeli, N.A. Kuzmin, K. Hiller, R. Trayanov, D. T. Burilkov, P. Zalan, V.R. Krastev, P. A. Smirnov, A. N. Morozov, Yu. Potrebenikov, Ya. A. Vazdyk, T.S. Grigalashvili, L. N. Shtarkov, Maria Smizanska, J. Klabuhn, V. V. Rybakov, A. F. Kamburyan, V. K. Berdyshev, A.L. Lyubimov, A.I. Zinchenko, I. I. Evsikov, M. V. Zavertyaev, A. M. Fomenko, H. E. Ryseck, M. Vetsko, S. Novak, G.I. Nikobadze, Mikhail Kapishin, V.V. Palchik, V. D. Cholakov, S. Yu. Potashev, V. D. Kekelidze, G.T. Tatishvili, E. I. Malinovsky, E. A. Chudakov, I. M. Ivanchenko, T.B. Progulova, D. A. Kirillov, R. A. Kvatadze, Jan Hladky, A. A. Loktionov, Petr Moisenz, I. Veress, A. N. Aleev, P. K. Markov, L.N. Abesalashvili, and N.L. Lomidze

Subjects
Charmed baryons, Nuclear physics, Physics, Proton, Pi, Neutron, Lambda
Published
1991

7. 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

8. A-Dependence of polarization ofΛ 0 produced inclusively in neutron-nucleus interactions

Author

R. Trayanov, T. G. Pitskhelauuri, N. V. Vlasov, A. Prokes, V. D. Kekelidze, N. O. Kadagidze, A. I. Zinchenko, A.L. Lyubimov, Petr Moisenz, A. N. Morozov, M. V. Zavertyaev, T. B. Progulova, G. V. Melitauri, A. M. Fomenko, Adel Terkulov, N.L. Lomidze, H. E. Ryseck, A. A. Loktionov, I.N. Kakurin, Y. Vazdik, V. K. Berdyshev, D. A. Kirillov, R. A. Kvatadze, Y. Soloviev, A. N. Maksimov, Nikita Smirnov, J. Klabuhn, A. N. Aleev, M. Vecko, A.S. Belousov, V. D. Cholakov, Sergey Rusakov, S. Yu. Potashev, E.G. Devitsyn, K. Hiller, M. F. Likhachev, G. G. Takhtamyshev, S. Nowak, P. K. Markov, Jan Hladky, V. A. Kozlov, A. S. Chvyrov, N.A. Kuzmin, I. I. Evsikov, M. Smijanska, V.K. Birulev, V. V. Pavlovskaya, L.N. Abesalashvili, I. G. Kosarev, E. I. Malinovsky, D. T. Burilkov, L. A. Slepets, P.T. Todorov, L. I. Abashidze, V. I. Skorobogatova, M. N. Kapishin, M. Novak, V. J. Zayachky, A. V. Pose, V. Arefiev, N.S. Amaglobeli, G.I. Nikobadze, M. S. Chargeishvili, T.S. Grigalashvili, Rezo Shanidze, V. D. Nazarenko, H. Nowak, B.N. Gus'kov, V. P. Dzhordzhadze, E. A. Chudakov, I. M. Ivanchenko, V. P. Balandin, V.V. Palchik, G.T. Tatishvili, L. N. Shtarkov, N.N. Karpenko, and V. R. Krastev

Subjects
Nuclear reaction, Physics, Antiparticle, Pion, Physics and Astronomy (miscellaneous), Meson, Hadron, Neutron, Atomic physics, Nucleon, Engineering (miscellaneous), Charged particle
Abstract

TheA-dependence of the polarization ofΛ 0, s produced inclusively in neutron-nucleus interactions at a mean neutron momentum of about 40 GeV/c has been measured in an experiment performed using the BIS-2 spectrometer at the Serpukhov accelerator. Carbon, Aluminium and Copper targets were used. TheΛ 0, s were produced in the kinematical region of 0.6

Published
1987

9. 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

10. TheΛ c + production by 40–70 GeV neutrons on carbon

Author

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

Subjects
Physics, Nuclear physics, Nuclear reaction, Particle decay, Pion, Physics and Astronomy (miscellaneous), Meson, Hadron, Mass spectrum, Hyperon, Nucleon, Engineering (miscellaneous)
Abstract

The inclusive production of charmed baryonsΛ c + by 40–70 GeV neutrons on carbon has been observed. The decays $$\Lambda _c^ + \to \bar K^0 p\pi ^ + \pi ^ -$$ (130 ± 18 events) andΛ + →Λ 0π+π+π− (57±14 events) have been detected. The mean value ofΛ + mass is (2,268±6) MeV/c2. The invariant cross section forX>0.5 is described byE·d 3σ/dp 3∝ exp(−)bP T ·(1−X) n withb=(2.5±0.6) (GeV/c)−1 andn=(1.5±0.5). The cross section of theΛ + inclusive production measured forX>0.5 times the branching ratios are $$\sigma \cdot B(\bar K^0 p\pi ^ + \pi ^ - ) = (10 \pm 4)$$ μb per carbon nucleus and σ·B(Λ 0 π + π + π −)=(2.3±1.1) μb per carbon nucleus. The experiment has been performed in the neutron beam of the Serpukhov accelerator using the spectrometer BIS-2.

Published
1984

11. Production of $$\bar D^0 $$ andD − mesons in neutron-carbon interactions at 40–70 GeV

Author

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

Subjects
Hadronic decay, Nuclear physics, Physics, Physics and Astronomy (miscellaneous), Meson, Transverse momentum, Carbon nucleus, Neutron, Elementary particle, Engineering (miscellaneous), Spectral line
Abstract

The production of $$\bar D$$ mesons in neutroncarbon interactions at 40–70 GeV/c has been investigated. The $$\bar D$$ mesons were detected via the hadronic decay modes $$\bar D^0 \to K^{* + } (892)\pi ^ - $$ andD −→K *+(892)π−π−. In the kinematical regionx F >0.5 andp T

Published
1988

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