排序方式: 共有31条查询结果,搜索用时 250 毫秒
1.
A. E. Blinov V. E. Blinov A. E. Bondar A. D. Bukin V. R. Groshev S. G. Klimenko G. M. Kolachev A. P. Onuchin V. S. Panin I. Ya. Protopopov A. G. Shamov V. A. Sidorov Yu. I. Skovpen A. N. Skrinsky V. A. Tayursky V. I. Telnov Yu. A. Tikhonov G. M. Tumaikin A. E. Undrus A. I. Vorobiov V. N. Zhilich 《Zeitschrift fur Physik C Particles and Fields》1992,53(1):33-39
The process γγ→π+π? was measured using the detector MD-1 at VEPP-4. The two-photon reactionse + e ?, μ+ μ? and π+ π? pair production were separated using scintillation counters, Cherenkov counters and shower-range chambers. A radiation widthГ γγ(f 2(1270))=3.1±0.35±0.35 keV was obtained. 相似文献
2.
M. N. Achasov K. I. Beloborodov A. V. Berdyugin A. G. Bogdanchikov D. A. Bukin A. V. Vasil’ev V. B. Golubev T. V. Dimova V. P. Druzhinin I. A. Koop A. A. Korol’ S. V. Koshuba E. V. Pakhtusova S. I. Serednyakov Z. K. Silagadze A. N. Skrinsky Yu. M. Shatunov 《Journal of Experimental and Theoretical Physics》2010,110(1):26-33
We have searched for the process e+e- → K+K-π0 at energies up to 1.38 GeVin an experiment with the spherical neutral detector at the VEPP-2M e+e- collider. The upper limits of the cross sections for the processes σ(e+e →; φπ: → K+K-π0) < 0.023 nb and σ(e+e- → KK*(892) → K+K-π0) < 0.059 nb have been established at a 95% confidence level. 相似文献
3.
M. N. Achasov K. I. Beloborodov A. V. Berdyugin A. G. Bogdanchikov D. A. Bukin A. V. Vasil’ev V. B. Golubev T. V. Dimova V. P. Druzhinin I. A. Koop A. A. Korol’ S. V. Koshuba E. V. Pakhtusova S. I. Serednyakov Z. K. Silagadze A. N. Skrinsky Yu. M. Shatunov D. A. Shtol’ 《JETP Letters》2010,92(2):80-84
The e + e ? → ηπ+π? cross section in the η → 2γ channel has been measured in the $ \sqrt s $ = 1.04- to 1.38-GeV energy range. The data with a total integrated luminosity of 9.05 pb?1 were collected on a spherical neutral detector at the VEPP-2M collider. The results are consistent with the BaBar and CMD2 data and have a higher statistical accuracy. 相似文献
4.
O. A. Shevchenko V. S. Arbuzov N. A. Vinokurov P. D. Vobly V. N. Volkov Ya. V Getmanov I. V. Davidyuk O. I. Deychuly E. N. Dementyev B. A. Dovzhenko B. A. Knyazev E. I. Kolobanov A. A. Kondakov V. R. Kozak E. V. Kozyrev V. V. Kubarev G. N. Kulipanov E. A. Kuper I. V. Kuptsov G. Ya. Kurkin S. A. Krutikhin L. E. Medvedev S. V. Motygin V. K. Ovchar V. N. Osipov V. M. Petrov A. M. Pilan V. M. Popik V. V. Repkov T. V. Salikova I. K. Sedlyarov S. S. Serednyakov A. N. Skrinsky S. V. Tararyshkin A. G. Tribendis V. G. Cheskidov K. N. Chernov M. A. Shcheglov 《Radiophysics and Quantum Electronics》2017,59(8-9):605-612
5.
M. N. Achasov K. I. Beloborodov A. V. Berdyugin A. V. Bozhenok D. A. Bukin T. V. Dimova V. P. Druzhinin V. B. Golubev I. A. Koop A. A. Korol S. V. Koshuba A. P. Lysenko A. V. Otboev E. V. Pakhtusova S. I. Serednyakov Yu. M. Shatunov V. A. Sidorov Z. K. Silagadze A. N. Skrinsky A. V. Vasiljev 《Journal of Experimental and Theoretical Physics》2006,103(5):720-727
We present a measurement of the e
+
e
− → K
S
K
L cross section in the energy range √s = 1.04−1.38 GeV. For an energy of √s ≥ 1.2 GeV the cross section exceeds vector meson dominance model predictions with only ρ(770), ω(783), and ϕ(1020) mesons
taken into account. The measured cross section agrees well with previous measurements.
Published in Russian in Zhurnal éksperimental’noĭ i Teoreticheskoĭ Fiziki, 2006, Vol. 130, No. 5, pp. 831–839.
This article was translated by the authors. 相似文献
6.
V. M. Aulchenko M. N. Achasov K. I. Beloborodov A. V. Berdyugin A. G. Bogdanchikov A. V. Bozhenok A. D. Bukin D. A. Bukin S. V. Burdin A. V. Vasiljev I. A. Gaponenko V. B. Golubev T. V. Dimova A. A. Drozdetsky V. P. Druzhinin M. S. Dubrovin P. M. Ivanov V. N. Ivanchenko I. A. Koop A. A. Korol S. V. Koshuba G. A. Kukartsev A. P. Lysenko A. V. Otboev E. V. Pakhtusova A. A. Salnikov S. I. Serednyakov V. A. Sidorov Z. K. Silagadze A. N. Skrinsky V. V. Shary Yu. M. Shatunov 《Journal of Experimental and Theoretical Physics》2000,90(6):927-938
The reaction e + e ?→ωπ0 near a Φ resonance was studied with a spherical neutral detector at VEPP-2M e + e ? collider. Both main modes of decay of a ω meson were investigated: ω→π+π?π0 and ω→π 0γ. The probability of decay Φ→ωπ0 was obtained from the magnitude of the interference wave in the cross section for the reaction e + e ?→ωπ0→ π+π?π0π0: B(Φ→ωπ0) = (5.5 ?1.4 +1.6 ±0.3) ×10?5. The ratio of the partial widths of the ω meson was obtained from the ratio of the cross sections for the two modes: Γ(ω→π0γ )/Γ(ω→π+π?π0) = 0.0994 ± 0.0036 ± 0.0038. 相似文献
7.
S.I. Serednyakov V.A. Sidorov A.N. Skrinsky G.M. Tumaikin Ju.M. Shatunov 《Physics letters. [Part B]》1977,66(1):102-104
A comparison of the electron and positron anomalous magnetic moments has been performed using the resonance depolarization method for the VEPP-2M storage ring beams. It has been shown, that the difference between anomalous magnetic moments of electron and positron doesn't exceed 1.0 × 10?5 with 95% confidence level in agreement with CPT-theorem prediction on equality of the particle and antiparticle magnetic moments. The achieved accuracy is two orders better than that available up to now. 相似文献
8.
Yu. A. Rogovsky D. E. Berkaev I. M. Zemlyansky Yu. M. Zharinov A. S. Kasaev I. A. Koop A. N. Kyrpotin A. P. Lysenko E. A. Perevedentsev V. P. Prosvetov A. L. Romanov A. I. Senchenko A. N. Skrinsky P. Yu. Shatunov Yu. M. Shatunov D. B. Shwartz 《Physics of Particles and Nuclei Letters》2014,11(5):651-655
High energy physics experiments were started at VEPP-2000 at the end of 2010; the third experimental run was finished in July 2013. The last run was devoted to the energy range 160–510 MeV in a beam. Compton backscattering energy measurements were used for the regular energy calibration of the VEPP-2000, together with resonance depolarization and NMR methods. The conception of the round colliding beam lattice along with precise orbit and lattice correction yielded a record high peak luminosity of 1.2 × 1031 cm?2 s?1 at 510 MeV and an average luminosity of 0.9 × 1031 cm?2 s?1 per run. A total betatron tune shift of 0.174 was achieved at 392.5 MeV. This corresponds to the beam-beam parameter ξ = 0.125 in terms of the collision point. The injection system is currently modernized to allow injection of particles at the VEPP-2000 energy maximum and the elimination of the existing lack of positrons. 相似文献
9.
Abov Yu. G. Boreskov K. G. Vysotsky M. I. Danilov M. V. Dolgolenko A. G. Dremin I. M. Zakharov V. I. Ioffe B. L. Kancheli O. V. Karnakov B. M. Lipatov L. N. Matveev V. A. Novikov V. A. Okun L. B. Saperstein E. E. Simonov Yu. A. Skrinsky A. N. Tyurin N. E. Shevchenko V. I. 《Physics of Atomic Nuclei》2010,73(11):1979-1980
Physics of Atomic Nuclei - 相似文献
10.
O. V. Anchugov V. E. Blinov A. V. Bogomyagkov A. N. Zhuravlev S. E. Karnaev G. V. Karpov V. A. Kiselev G. Ya. Kurkin E. B. Levichev O. I. Meshkov S. I. Mishnev N. Yu. Muchnoi S. A. Nikitin I. B. Nikolaev V. V. Petrov P. A. Piminov E. A. Simonov S. V. Sinyatkin A. N. Skrinsky V. V. Smaluk Yu. A. Tikhonov G. M. Tumaikin A. G. Shamov D. N. Shatilov D. A. Shvedov E. I. Shubin 《Journal of Experimental and Theoretical Physics》2009,109(4):590-601
The VEPP-4M accelerator facility with a universal KEDR detector is designed to conduct experiments with colliding electron-positron beams. High-energy physics, nuclear physics, and studies using synchrotron radiation are the main directions of research with this facility. In addition, experiments on poorly explored issues in the physics of beams in the electron-positron storage ring and methodological studies to prepare an experiment aimed at testing corollaries of the CPT theorem for an electron and a positron are regularly conducted at the VEPP-4 facility. A number of works performed in recent years are described: studies to increase the accuracy of comparing the electron and positron spin precession frequencies by the resonant depolarization method; measurements of the count rate of Touschek electrons as a function of the beam energy in a wide range; comparison of the methods for measuring the beam energy spread; a study of the electron beam dynamics when a nonlinear betatron resonance is crossed. 相似文献