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[en] Contribution from baryon resonances to the Σ+→pγ decay amplitude is calculated in framework of the bag model. The calculated values of P-even and P-odd amplitudes are more than an order less than the experimental values. This difference is caused, probably, by the fact that the matrix elements from the hamiltonian of weak interaction are erroneously
[ru]
Journal
Yadernaya Fizika; ISSN 0044-0027; 
; v. 34(11); p. 1392-1396
; v. 34(11); p. 1392-1396
[en] The bremsstrahlung mechanism for production of axions at the electron-nucleus scattering is considered in detail. The cross sections are calculated for reactions enabling one to detect axions transmission through matter
Journal
Yadernaya Fizika; ISSN 0044-0027; ; v. 29(4); p. 995-1000
; v. 29(4); p. 995-1000
No abstract available
Journal
Yadernaya Fizika; ISSN 0044-0027; ; v. 30(8); p. 589-591
; v. 30(8); p. 589-591
[en] The radiative corrections to a parity nonconserving electron-quark interactions are calculated in the Weinberg-Salam model. Strong interactions are taken into account in QCD
[ru]
Journal
Yadernaya Fizika; ISSN 0044-0027; ; v. 34(2); p. 451-459
; v. 34(2); p. 451-459
[en] It is shown that existence of a heavy axion suggested by Yang to explain CP invariance in the quantum chromodynamics contradicts the muon anomalous magnetic momentum data
Journal
Yadernaya Fizika; ISSN 0044-0027; ; v. 29(4); p. 1001-1002
; v. 29(4); p. 1001-1002
[en] The experiment was carried out with the MD-1 detector at the electron-positron collider VEPP-4. An upper limit of B(Υ→ρ0π0)<3.3x10-4 at 90% CL was obtained. (orig.)
Journal
[en] Analyzing the data recorded with the MD-1 detector operated at the VEPP-4 storage ring we have determined the Υ(1S) resonance leptonic partial width and mass. We find Γee=1.29±0.03±0.03 keV, M=9460.59±0.09±0.05 MeV/c2. This new value of the Υ(1S) mass should supersede the previously published value [11] based on almost the same statistics. (orig.)
Journal
[en] The process γγ→π+π- was measured using the detector MD-1 at VEPP-4. The two-photon reactions e+e-, μ+μ- and π+π- pair production were separated using scintillation counters, Cherenkov counters and shower-range chambers. A radiation width Γγγ(f2(1270))=3.1±0.35±0.35 keV was obtained. (orig.)
Journal
[en] In experiments with e+e- beams performed at the VEPP-4 storage ring with the MD-1 detector we have measured Γee, the leptonic width, and Bμμ, the muon-pair branching ratio, for the decay of Υ(1s). We obtain Γee = (1.266 ± 0.023 ± 0.038) keV, Bμμ = (2.12 ± 0.20 ± 0.10)% and Γ tot = (59.7 ± 5.7 ± 3.7) keV. (orig.)
Journal
[en] In the experiment with e+e--beams performed at the VEPP-4 storage ring with the MD-1 detector we have measured Bμμ, the branching ratio for the decay of Υ(1S) state into μ+μ-. We obtained Bμμ=(2.12+0.20+0.10)%. It is shown that the continuum and resonance interference should be taken into account. For the first time the upper limits on the branching ratio for the decays Υ→π+π-, K+K-, panti p have been measured: Br(Υ→π+π-)<5.10-4, Br(Υ→K+K-)<5.10-4, Br(Υ→panti p)<9.10-4 (90% CL). (orig.)
Journal
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