排序方式: 共有14条查询结果,搜索用时 15 毫秒
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D. Alde F. Binon C. Bricman S. V. Donskov P. Duteil M. Gouanère A. V. Inyakin D. B. Kakauridze V. A. Kachanov G. V. Khaustov A. V. Kulik J. P. Lagnaux A. A. Lednev V. A. Maisheev Yu. M. Melnik Yu. V. Mikhailov Th. Mouthuy J. P. Peigneux A. Possoz Yu. D. Prokoshkin Yu. V. Rodnov S. A. Sadovsky P. M. Shagin D. Sillou A. V. Singovsky J. P. Stroot V. P. Sugonyaev 《Zeitschrift fur Physik C Particles and Fields》1984,25(3):225-229
The partial widths of η-meson decays η→2γ, η→3π0 and η→π0γγ have been measured in a high accuracy experiment made at the IHEP accelerator with the hodoscope electromagnetic spectrometer GAMS-2000. An upper limit has been determined for the 3γ channel. The Dalitz plot of the η decay into 3π0 shows that the matrix element does not depend on the pion energy. 相似文献
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F. Binon V. A. Davydov S. V. Donskov J. Dufournaud P. Duteil M. Gouanère A. V. Inyakin V. A. Kachanov D. B. Kakauridze G. V. Khaustov Yu. S. Khodirev A. V. Kulik J. P. Lagnaux A. A. Lednev Yu. V. Mikhailov J. P. Peigneux Yu. D. Prokoshkin Yu. V. Rodnov R. Roosen S. A. Sadovsky A. V. Starzev J. P. Stroot V. P. Sugonyaev A. E. Yakutin 《Zeitschrift fur Physik C Particles and Fields》1981,9(2):109-116
π? p→π0 n differential cross-sections have been measured in the region of small 4-momentum transfer at 40 GeV/c incident momentum. The experiment performed at the IHEP 70 GeV accelerator makes use of a hodoscope γ-spectrometer. Thet- dependence of the cross-section points to a dominance of the spin-flip amplitude. 相似文献
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M.G. Albrow M. BorghiniB. Bosnjakovic F.C. Erné Y. Kimura J.P. Lagnaux J.C. Sens F. Udo 《Physics letters. [Part B]》1971
By using a polarized deuteron target we have measured the asymmetry in the differential cross section for elastic scattering of protons on deuterons and for quasi-elastic scattering of protons on protons bound in deuterons between the two states of opposite polarization, normal to the scattering plane of the initial deuteron. The beam momentum was 1.21 GeV/c. It is checked that the neutrons bound in the deuterons are polarized to approximately 20%. 相似文献
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F. Binon P. Duteil M. Gouanére L. Hugon J. Jansen J.-P. Lagnaux H. Palevsky J.-P. Peigneux M. Spighel J.-P. Stroot 《Nuclear Physics A》1978,298(3):499-529
Differential cross sections for negative pion scattering on 4He have been measured at five pion kinetic energies between 110 and 260 MeV in the angular range from 5° to 180°. Total cross sections have also been measured at eleven energies between 67 and 285 MeV. The differential cross sections have been fitted with a phenomenological expression for the nuclear scattering amplitude. Conventional phase shifts have been reconstructed starting from the parameters of the fits. 相似文献
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D. Alde F. G. Binon C. Bricman S. V. Donskov M. Gouanere A. V. Inyakin V. A. Kachanov D. B. Kakauridze G. V. Khaustov E. A. Knapp A. V. Kulik J. P. Lagnaux A. A. Lednev Yu. V. Mikhailov Th. Mouthuy J. P. Peigneux Yu. D. Prokoshkin Yu. V. Rodnov S. A. Sadovsky V. D. Samoylenko P. M. Shagin A. V. Shtannikov A. V. Singovsky J. P. Stroot V. P. Sugonyaev 《Zeitschrift fur Physik C Particles and Fields》1987,36(4):603-609
The partial widths of the η′(958) decays into 2γ, ωγ, 3π0 andηπ0π0 have been measured with the GAMS-2000 spectrometer at the 70 GeV IHEP accelerator. Upper limits for the η′ decays into 3γ, π0γγ, 2π0 and 4π0 have also been obtained. The slope of a linear matrix element for theG-parity violating decayη′→3π0 has been determined. 相似文献
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The structural and electronic transport properties of La1−x
Ce
x
MnO3 (x=0.0–1.0) have been studied. All the samples exhibit orthorhombic crystal symmetry and the unit cell volume decreases with
Ce doping. They also make a metal-insulator transition (MIT) and transition temperature increases with increase in Ce concentration
up to 50% doping. The system La0.5Ce0.5MnO3 also exhibits MIT instead of charge-ordered state as observed in the hole doped systems of the same composition. 相似文献
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F. Binon S.V. Donskov P. Duteil M. Gouanère A.V. Inyakin V.A. Kachanov D.B. Kakauridze G.V. Khaustov A.V. Kulik J.P. Lagnaux A.A. Lednev Yu.V. Mikhailov Th. Mouthuy J.P. Peigneux A. Possoz Yu.D. Prokoshkin Yu.V. Rodnov V.P. Sugonyaev 《Nuclear Physics B》1984,239(2):311-324
The production of χ particles in the reaction π?p → χ + … has been studied near threshold. The measurements have been performed at the 70 GeV IHEP proton synchrotron using the hodoscope spectrometer GAMS-2000. The χ particles have been identified through their decay χ → J/ψ + γ, J/ψ → e+e?. In the region XF ?0.4 the fraction of obsered J/ψ particles which is obtained via the decay of χ states is 0.44 ± 0.16. The χ longitudinal and transverse momentum distributions are similar to those obtained for J/ψ. The inclusive production cross section of χ particles (3P1 and 3P2 states) at 38 GeV/c is σXF>0 (π?p → χ + …) = (28±11) nb. 相似文献