HEPData Search

Results of the first experiments with the Neutral Detector at the electron-positron storage ring VEPP-2M are presented. Branching ratios of the ø-meson radiative decays have been measured: B ( ø → ηγ )=(1.30±0.06)%, B ( ø → π 0 γ )=(0.130±0.013)%, their accuracy being several times higher than the world average. The width ratio is Γ(ø→ηγ) Γ(ø→π 0 γ)=(10±1) . Using the abovementioned quantities, the ω − ø mixing angle θ v =(38.3±0.2) ° , as well as the ratio between the effective magnetic moments of the s- and u-quarks, μ s μ u =(0.57±0.03) have been calculated.

8 data tables

Table 1

CROSS SECTIONS IN THE PHI MESON PEAK (CORRECTED FOR RADIATIVE EFFECTS).

Table 2

No description provided.

Table 3

SAME AS FIG 2A, BUT KINEMATICAL RECONSTRUCTION ARE APPLIED. I.E. THE ENERGY- MOMENTUM CONSERVATIONS ARE USED TO IMPROVE THE ACCURACY OF PARTICLE ENERGIES AND ANGLES MEASURED IN DETECTOR.

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SEARCH FOR DELTA0 (1232) AND DELTA++ (1232) ISOBARS IN NEUTRINO INTERACTION WITH NEON NUCLEUS

Ammosov, V.V. ; Burtovoy, V.S. ; Gapienko, V.A. ; et al.

JETP Lett. 40 (1984) 1041, 1984.

Inspire Record 201833 DOI 10.17182/hepdata.40945

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

STRUCTURAL FEATURE AT 50-GEV/C IN THE MASS SPECTRUM OF THE PHI PI- SYSTEM IN THE REACTION PI- + CU ---> MU+ + MU- + PI- + ..

Antipov, Yu.M. ; Bezzubov, V.A. ; Budanov, N.P. ; et al.

JETP Lett. 38 (1983) 430-432, 1983.

Inspire Record 205427 DOI 10.17182/hepdata.16913

None

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

RELATIVE PROBABILITY FOR THE DECAY PHI ---> ETA GAMMA

Kurdadze, L.M. ; Lelchuk, M.Yu. ; Root, N.I. ; et al.

JETP Lett. 38 (1983) 366-369, 1983.

Inspire Record 205378 DOI 10.17182/hepdata.16941

None

2 data tables

Table 1

No description provided.

Table 2

No description provided.

STUDY OF D (1285) ---> K+ K- pi0 DECAY

Bityukov, S.I. ; Dorofeev, V.A. ; Dzhelyadin, R.I. ; et al.

JETP Lett. 39 (1984) 115, 1984.

Inspire Record 195747 DOI 10.17182/hepdata.41100

Results on the study of D(1285)→K + K − π 0 -decay are presented. The K + K − effective mass spectrum is measured with statistics which are by an order of magnitude higher than in the previous data. From the analysis of the differential spectrum d N d M KK (in the framework of the δ-dominance model) the δ-meson effective width is Γ δ >180MeV/ c 2 at √ s =1 GeV/ c 2 , which means a strong coupling of the δ-meson with hadrons.

3 data tables

Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

Investigation of $D(1285)$ and $e(1420)$ Mesons Production in Exclusive Interactions of $\pi^-$ and $K^-$ Mesons at 32.5-{GeV}/$c$

Bityukov, S.I. ; Viktorov, V.A. ; Golovkin, S.V. ; et al.

Sov.J.Nucl.Phys. 39 (1984) 735, 1984.

Inspire Record 196509 DOI 10.17182/hepdata.41117

None

4 data tables

Table 1

Table 2

Table 3

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CM Energies (GeV)

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ANALYSIS OF THE REACTION PI- P ---> PI0 ETA N AT 40-GEV/C BEAM MOMENTUM.

MEASUREMENT OF COUPLING CONSTANT GAMMA ---> 3 PI IN THE PROCESS OF PION PAIR PRODUCTION BY PIONS IN NUCLEAR COULOMB FIELD. (IN RUSSIAN)

DIFFERENTIAL CROSS-SECTION OF THE pi+ p ---> K+ SIGMA+ (1385) REACTION AT 12-GeV/c

TEST OF QUANTUM ELECTRODYNAMICS IN THE COMPTON SCATTERING OF QUASIREAL PHOTONS BY ELECTRONS AND POSITRONS AT THE VEPP-2M STORAGE RING

Measurement of $\phi$ Meson Radiative Decays at the Storage Ring Vepp-2m With the Neutral Detector

SEARCH FOR DELTA0 (1232) AND DELTA++ (1232) ISOBARS IN NEUTRINO INTERACTION WITH NEON NUCLEUS

STRUCTURAL FEATURE AT 50-GEV/C IN THE MASS SPECTRUM OF THE PHI PI- SYSTEM IN THE REACTION PI- + CU ---> MU+ + MU- + PI- + ..

RELATIVE PROBABILITY FOR THE DECAY PHI ---> ETA GAMMA

STUDY OF D (1285) ---> K+ K- pi0 DECAY

Investigation of $D(1285)$ and $e(1420)$ Mesons Production in Exclusive Interactions of $\pi^-$ and $K^-$ Mesons at 32.5-{GeV}/$c$