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Your search keyword '"B.O Baibusinov"' showing total 11 results
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11 results on '"B.O Baibusinov"'

1. Study of dynamics of φ→π+π−π0 decay with CMD-2 detector

Author

V.A. Sidorov, A.I. Sukhanov, V.I Ptitzyn, D.N. Grigoriev, P.M. Ivanov, B.I. Khazin, V. W. Hughes, Yu. M. Shatunov, D.H Brown, N.I. Root, S.G. Zverev, N.M. Ryskulov, T.A. Purlatz, Ivan Koop, G.V. Fedotovich, S. Eidelman, Igor Nesterenko, B. L. Roberts, A.A. Polunin, L.M. Kurdadze, V.S. Okhapkin, I.G. Snopkov, B.O Baibusinov, J. A. Thompson, A.S. Dvoretsky, Yu.I Merzlyakov, E.V. Anashkin, I.B. Logashenko, G.A Aksenov, A.N. Skrinsky, M. Arpagaus, P.Yu. Stepanov, R.R. Akhmetshin, P.A. Lukin, N. Gabyshev, V.M. Titov, B. Shwartz, V.P. Smakhtin, A.A. Ruban, Yu.V. Yudin, A. Bondar, L.M. Barkov, V. S. Banzarov, V.V Danilov, E. P. Solodov, A.A. Grebeniuk, A.S. Kuzmin, D.V. Chernyak, and A.G. Shamov

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Amplitude, Meson, law, Electron–positron annihilation, Detector, Dalitz plot, Atomic physics, Collider, law.invention
Abstract

A study of the φ → π + π − π 0 decay mode has been performed using a data sample of about 2.0 million φ decays collected by the CMD-2 detector at VEPP-2M collider in Novosibirsk. The following parameters of the φ -meson have been measured: Br ( φ → π + π − π 0 )=0.145±0.009±0.003 and δ φ − ω =162±17°. The analysis of the Dalitz plot showed the dominance of the φ → ρπ intermediate mechanism, the limits for the ratio of the direct amplitude of φ →3 π to that of φ → ρπ are −0.16 a 1 φ → π + π − η and direct φ → ργγ have been found for the first time: Br ( φ → π + π − η ) −4 and Br ( φ → ργγ ) −4 at 90% C.L.

Published
1998

2. Data acquisition systems and triggers for the detectors in INP

Author

I.A Kenik, V.O Myskin, L.I Shamanaeva, G.A. Savinov, S.E. Baru, V.M. Aulchenko, B.O Baibusinov, Alexey Talyshev, and Yu. V. Usov

Subjects
Physics, Nuclear and High Energy Physics, Data acquisition, business.industry, Clock rate, Detector, Process (computing), Electronics, business, Instrumentation, Computer hardware
Abstract

To accept, select and process the information of colliding beam experiments we have constructed a DAQ called “KLYUKVA”. The main principles are: distribution of 500 MHz clock frequency from one center for measurements of time intervals; disposition of all registering electronics in special crates with fast databus and triggers communications; using of fast processors with built-in algorithms as crate controllers. This DAQ with triggers can provide 250 selected and processed events per second for on-line computer with ∼15% of losses. The DAQ works now on all three INP detectors: KEDR, SND and KMD-2.

Published
1998

3. Search for rare φ decays in π+π−γ final state

Author

D.H Brown, M.A Shubin, S.I. Eidelman, Igor Nesterenko, P.M. Ivanov, B.O Baibusinov, V.A. Sidorov, N.I. Root, E.V Popkov, L.M. Kurdadze, I.G. Snopkov, G.V. Fedotovich, V. S. Banzarov, I.B. Logashenko, V.P. Smakhtin, E. P. Solodov, B.I. Khazin, A. Bondar, L.M. Barkov, B.A. Shwartz, B.L. Roberts, C.M Valine, Yu.V. Yudin, R.R. Akhmetshin, M. Arpagaus, A.V Maksimov, I. A. Koop, G.A Aksenov, V. W. Hughes, T.A. Purlatz, Yu.I Merzlyakov, N.M. Ryskulov, V.M. Titov, Alexander Skrinsky, V.S. Okhapkin, E.A. Perevedentsev, A.A. Ruban, J. A. Thompson, E.V Anashkin, V. A. Astakhov, A.A. Grebeniuk, P.A. Lukin, D.N. Grigoriev, N. Gabyshev, A.I. Sukhanov, A.S. Kuzmin, A.P. Lysenko, and D.V. Chernyak

Subjects
Physics, Nuclear and High Energy Physics, Crystallography, Bremsstrahlung, State (functional analysis), Atomic physics
Abstract

A search for φ radiative decays has been performed using a data sample of about 2.0 million φ decays collected by the CMD-2 detector at VEPP-2M collider in Novosibirsk. From the selected e + e − → π + π − γ events the following results were obtained: B( φ → f 0 (980) γ ) −4 for destructive and B( φ → f 0 (980) γ ) −4 for constructive interference with the Bremsstrahlung process respectively, B( φ → γ → π + π − γ ) −5 for E γ >20 MeV, B( φ → ργ ) −4 . From the selected e + e − → μ + μ − γ events B( φ → μ + μ − γ )=(2.3±1.0)×10 −5 has been obtained for E γ >20 MeV. The upper limit on the P,CP-violating decay η → π + π − has also been placed: B( η → π + π − ) −4 . All upper limits are at 90% C.L.

Published
1997

4. Measurement of φ meson parameters with CMD-2 detector at VEPP-2M collider

Author

I.G. Snopkov, V.V Danilov, B.A. Shwartz, A.A. Grebeniuk, W. A. Worstell, A.A Ruban, Igor Nesterenko, V.G Zavarzin, G.V. Fedotovich, C.M Valine, D.H Brown, M.A Shubin, B.L. Roberts, B.O Baibusinov, V.M. Titov, I.B. Logashenko, N. Gabyshev, V.M Aulchenko, E. P. Solodov, V. W. Hughes, A.V Maksimov, Yu.I Merzlyakov, B.I. Khazin, A.I. Sukhanov, N.M. Ryskulov, S.E Baru, A.N. Skrinsky, S. K. Dhawan, R.R. Akhmetshin, G.A Aksenov, V. S. Banzarov, P. Cushman, J. A. Thompson, D.N. Grigoriev, T. A. Purlats, V.S. Okhapkin, S.I. Eidelman, J. P. Miller, V.A. Sidorov, A.A Polumin, A.E Sher, V.I Ptitzyn, I. A. Koop, P.M. Ivanov, Yu. M. Shatunov, A.P. Lysenko, E.V Popkov, Yu.V. Yudin, A.S. Kuzmin, N.I Root, E.A. Perevedentsev, S.I. Redin, V.P. Smakhtin, A. Bondar, L.M. Barkov, V.A Monitch, and E.V Anashkin

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, Physics::Instrumentation and Detectors, Hadron, Detector, law.invention, Nuclear physics, General purpose, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider
Abstract

Results of the measurement of the φ meson parameters with the general purpose detector CMD-2 at the upgraded e + e − collider VEPP-2M at Novosibirsk are presented. This is the first measurement of the four major φ decay modes in a single e + e − experiment. The results based on about 55,600 identified hadronic events are consistent with previous measurements, and have precision comparable to the current world average.

Published
1995

5. CMD-2 barrel calorimeter

Author

V.M. Aulchenko, A.I. Sukhanov, B. Shwartz, B.O Baibusinov, A.S. Kuzmin, L.V. Pestsov, V.P. Smakhtin, A. Bondar, V.S. Okhapkin, and L.A. Leontiev

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Particle physics, Physics::Instrumentation and Detectors, business.industry, Detector, Barrel (horology), Particle detector, Calorimeter, law.invention, Optics, law, Scintillation counter, Measuring instrument, High Energy Physics::Experiment, Collider, business, Instrumentation
Abstract

The barrel calorimeter of the CMD-2 detector for the VEPP-2M collider is described. The calorimeter contains 892 CsI crystals read by PM tubes. Operation with it during the last year demonstrated good performance as well as energy and spatial resolution which are close to the corresponding project values.

Published
1993

6. Detector KEDR tagging system for two-photon physics

Author

Yu.A Pogorelov, Dmitry V. Zaitsev, V. A. Sidorov, V.M. Aulchenko, B.A. Shwartz, L.V Romanov, T.A. Purlatz, G.M. Kolachev, N.I. Root, S.E. Baru, V. N. Zhilich, B.O Baibusinov, N.Yu Muchnoj, V.M. Titov, G.Ya. Kezerashvili, G.S. Filimonov, A. M. Milov, and A. Bondar

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Effective mass (solid-state physics), Detector, Two-photon physics, Invariant mass, Electron, Tag system, Instrumentation, Storage ring, Particle detector
Abstract

A special system to tag scattered electrons from γγ-processes is described. The system is intended for the experiments at the VEPP-4M storage ring. This system has a high detection efficiency and good invariant mass resolution.

Published
1996

7. Experience with CsI(Na) crystals for calorimetry

Author

A.S. Kuzmin, A.E. Bondar, L.A. Leontiev, S.B. Oreshkin, B.O Baibusinov, E.M Baldin, R.P. Ovechkin, P.B. Gaidarev, B. Shwartz, and V. M. Aulchenko

Subjects
Physics, Nuclear and High Energy Physics, Calorimeter (particle physics), Physics::Instrumentation and Detectors, Sodium, Doping, Detector, Analytical chemistry, chemistry.chemical_element, Calorimetry, Crystal, Cesium iodide, chemistry, High Energy Physics::Experiment, Instrumentation, Computer Science::Information Theory
Abstract

The performance of cesium iodide doped with sodium is studied. The design and parameters of a CsI(Na) endcap calorimeter for the KEDR detector are presented. Also reported are the results of the study of a calorimeter element consisting of a CsI(Na) crystal coupled to a vacuum phototriode.

Published
1996

8. Status of the KEDR detector

Author

M.Yu. Lelchuk, M.Yu. Barnyakov, A.G. Chilingarov, A. N. Yushkov, F. Palombo, L.V Romanov, L.M. Barkov, R Ovechkin, N.I. Root, V. A. Kiselev, P.B. Gaidarev, S.V Pivovarov, A.A. Ruban, G.A. Savinov, S.I. Eidelman, V.A. Sidorov, D.A Epifanov, G.D. Minakov, S.B. Oreshkin, I Bedny, V. F. Kulikov, V. E. Blinov, V.M Malyshev, D.M Beilin, P.F. Manfredi, Evgeny Levichev, Valery I. Telnov, A.M Soukharev, L.A. Leontiev, M.A Shubin, D. N. Shatilov, A.G. Shamov, S.A. Nikitin, P. L. Frabetti, A. Bondar, S. S. Petrosyan, V.N. Kozlov, A.S. Kuzmin, Yu. V. Usov, P. Cantoni, A. R. Buzykaev, S.A. Kononov, Valerio Re, Yu I. Skovpen, Francesco Lanni, B.O Baibusinov, D.V Bondarev, L. Dneprovsky, A. I. Shusharo, Sergey Peleganchuk, A.A Talyshev, B.A. Shwartz, R. Snopkov, V.P Nagaslaev, V.P. Smakhtin, G. M. Kolachev, I. Ya. Protopopov, E.M Baldin, S.V. Karpov, Anton Poluektov, A. P. Onuchin, V. N. Zhilich, A.K. Barladyan, V.M. Aulchenko, V.V. Anashin, L.M. Kurdadze, E. A. Kravchenko, Alexey Maslennikov, V.R. Groshev, A. Sokolov, A. E. Blinov, Yu. A. Tikhonov, A.B. Nomerotsky, S.E. Baru, G. E. Pospelov, S.G. Klimenko, A.I Vorobyev, A. I. Naumenkov, K. Yu Todyshev, V.A. Tayursky, A.V Zatcepin, S.A Kuznecov, and V Balashov

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Meson, Physics::Instrumentation and Detectors, Detector, Linear particle accelerator, Particle detector, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Instrumentation, Energy (signal processing), Cherenkov radiation
Abstract

KEDR is a general-purpose detector for experiments at the VEPP-4M e + e − -collider in the energy range 2 E =2.0– 12 GeV . All detector subsystems (except the aerogel Cherenkov counters) have been installed into the detector at VEPP-4M. Some preliminary data have been taken in the energy region of the J/Ψ meson. The tuning of the detector and the VEPP-4M collider is in progress. Preliminary results on the detector performance are presented. The future experimental program for the KEDR detector is discussed.

Published
2002

9. Study of KS KL Coupled Decays and KL -Be Interactions with the CMD-2 Detector at VEPP-2M Collider

Author

V.A. Sidorov, Igor Nesterenko, B.O Baibusinov, A.E Sher, I. A. Koop, N.M. Ryskulov, J. A. Thompson, E.A. Perevedentsev, N.I. Root, G.V. Fedotovich, D.H Brown, M.A Shubin, V.G Zavarzin, V.V Danilov, Yu. M. Shatunov, A.P. Lysenko, S.I. Eidelman, A.A. Ruban, S.I. Redin, V.M. Titov, A.A. Grebeniuk, Yu.V. Yudin, A. Bondar, L.M. Barkov, A.A. Polunin, V.P. Smakhtin, A.I. Sukhanov, E.V Popkov, D.N. Grigoriev, V.M Aulchenko, B.A. Shwartz, E.V Anashkin, A.V Maksimov, B.I. Khazin, Alexander Skrinsky, B.L. Roberts, I.B. Logashenko, V. S. Banzarov, E. P. Solodov, G.A Aksenov, A.S. Kuzmin, V.I Ptitzyn, P.M. Ivanov, D.V. Chernyak, V.S. Okhapkin, I.G. Snopkov, S. K. Dhawan, Yu.I Merzlyakov, S.E Baru, T. A. Purlats, P.A. Lukin, C.M Valine, W. A. Worstell, V. W. Hughes, N. Gabyshev, P. Cushman, R.R. Akhmetshin, and J. P. Miller

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Meson, Detector, High Energy Physics::Phenomenology, Charged particle, law.invention, High Energy Physics - Experiment, Nuclear physics, Angular distribution, law, High Energy Physics::Experiment, Collider, Beam (structure)
Abstract

The integrated luminosity about 4000 inverse nanobarn of around phi meson mass ( 5 millions of phi mesons) has been collected with the CMD-2 detector at the VEPP-2M collider. A latest analysis of the KS KL coupled decays based on 30 % of available data is presented in this paper. The KS KL pairs from phi meson decays were reconstructed in the drift chamber when both kaons decayed into two charged particles. From a sample of 1423 coupled decays a selection of candidates to the CP violating KL into pi+ pi- decay was performed. CP violating decays were not identified because of the domination of events with a KL regenerating at the Be beam pipe into KS and a background from KL semileptonic decays. The regeneration cross section of 110 MeV/c KL mesons was found to be 53 +- 17 mb in agreement with theoretical expectations. The angular distribution of KS mesons after regeneration and the total cross section of KL for Be have been measured., Comment: 14 pages, 8 figures

Published
1997

10. Preliminary results from the CMD-2 detector

Author

I.G. Snopkov, Yu. M. Shatunov, Ivan Koop, A. P. Lysenko, G.A Aksenov, J. P. Miller, D.H Brown, M.A Shubin, B. L. Roberts, L. A. Leontyev, B.I. Khazin, V. W. Hughes, B.O Baibusinov, Vladimir Smakhtin, A.I. Shekhtman, V.G Zavarzin, A.E. Bondar, S.I. Redin, V.M. Titov, R.R. Akhmetshin, V.S. Okhapkin, N. S. Bashtovoi, W. A. Worstell, V.A. Sidorov, V. E. Fedorenko, A.N. Skrinsky, N.I. Root, I. B. Vasserman, M. Yu. Lelchuk, S.E. Baru, T. A. Purlats, A. B. Nomerotsky, C. H. Yang, Yu.V. Yudin, P.M. Ivanov, J. A. Thompson, Satish Dhawan, G.V. Fedotovitch, N.M. Ryskulov, Evgeny Perevedentsev, L.M. Barkov, E.V. Anashkin, B. Shwartz, Yu.I Merzlyakov, I. V. Zhuravkov, V. M. Aulchenko, P. Cushman, A.V Maksimov, V. S. Banzarov, S.G. Pivovarov, E. P. Solodov, A.A. Grebeniuk, A.S. Kuzmin, D.N. Grigoriev, and S. Eidelman

Subjects
Physics, Particle physics, Luminosity (scattering theory), Electromagnet, Physics::Instrumentation and Detectors, Detector, Particle accelerator, Magnetic detector, Particle detector, law.invention, Nuclear physics, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Center of mass, Collider
Abstract

A new general‐purpose detector CMD‐2 (calorimetric magnetic detector) has started experiments at the upgraded e+e− collider VEPP‐2M (collider for electron‐positron beams) at Novosibirsk. During early runs an integrated luminosity of about 400 inverse nanobarns has been collected in the center of mass energy range 400–1030 MeV.

Published
1992

11. Muon system based on streamer tubes with time-difference readout

Author

B.O. Baibusinov, A.B. Nomerotsky, V.M. Aulchenko, M.Yu. Lelchuk, and A.G. Chilingarov

Subjects
Physics, Nuclear and High Energy Physics, Optics, Muon, business.industry, Time difference, Resolution (electron density), Measuring instrument, business, Instrumentation, Image resolution, Particle detector, Electronic circuit
Abstract

A time-difference technique for the measurement of the coordinate along the wire has been investigated in streamer tubes connected in series. A resolution of 15 mm has been obtained for 5 tubes with a total length of 15 m. The detailed study of nonlinearity of time-coordinate relation was performed for a 8-tube chain with a total length of 10.6 m.

Published
1988

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