Pion Form-Factor Measurement by e+ e- --> pi+ pi- in the Energy Range 2 e from 0.78-GeV Up to 1.34-GeV

Bukin, A.D. ; Vasserman, I.B. ; Koop, I.A. ; et al.
Phys.Lett.B 73 (1978) 226-228, 1978.
Inspire Record 134220 DOI 10.17182/hepdata.27474

The cross section of the reaction e + e − → π + π − has been measured in the energy range 2 E from 0.78 up to 1.34 GeV. The obtained experimental values of the pion form factor exceed notably the ρ -meson tail.

1 data table

No description provided.


Evidence for Direct $\gamma$ Production at Large $x$ in $\psi$ (3100) Decay

Ronan, M.T. ; Trippe, T.G. ; Barbaro-Galtieri, A. ; et al.
Phys.Rev.Lett. 44 (1980) 367, 1980.
Inspire Record 142946 DOI 10.17182/hepdata.20700

The inclusive γ and π0 momentum spectra from ψ(3100) decay have been measured in e+e− annihilation at SPEAR. When the γ spectrum is compared with that expected from π0 decay, an excess of high-momentum γ's is observed. This excess is compared with that predicted by quantum chromodynamics for the decay of the ψ into a γ and two gluons.

4 data tables

THE STATISTICAL AND SYSTEMATIC ERRORS ARE GIVEN SEPARATELY AS WELL AS COMBINED IN QUADRATURE FOR THE QUOTED TOTAL ERROR.

THE STATISTICAL AND SYSTEMATIC ERRORS ARE GIVEN SEPARATELY AS WELL AS COMBINED IN QUADRATURE FOR THE QUOTED TOTAL ERROR. SYSTEMATIC ERROR IS 17 PCT.

QUOTED ERRORS ARE STATISTICAL. SYSTEMATIC ERROR IS 20 PCT. ONLY HALF THE SUM OF THE PI+ AND PI- CROSS SECTIONS IS PLOTTED IN THE FIGURE IN THE JOURNAL.

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STUDY OF DECAYS PHI ---> MU+ MU- AND PHI ---> PI+ PI-

Kurdadze, L.M. ; Lelchuk, M.Yu. ; Sidorov, V.A. ; et al.
Yad.Fiz. 35 (1982) 352-367, 1982.
Inspire Record 179830 DOI 10.17182/hepdata.17741

None

2 data tables

No description provided.

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INVESTIGATION OF THE PROCESS E+ E- ---> E+ E- GAMMA IN THE ENERGY REGION 0.64-GEV - 1.40-GEV. (IN RUSSIAN)

Bukin, A.D. ; Kurdadze, L.M. ; Lelchuk, M.Yu. ; et al.
Yad.Fiz. 35 (1982) 1444-1447, 1982.
Inspire Record 182031 DOI 10.17182/hepdata.37152

None

3 data tables

No description provided.

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The first results of an experiment to study multiple production of pions on colliding electron-positron beams at a cryogenic magnetic detector

Barkov, L.M. ; Blinov, G.A. ; Vasserman, I.B. ; et al.
NOVO-82-124, 1982.
Inspire Record 1501545 DOI 10.17182/hepdata.76280

None

5 data tables

No description provided.

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PRELIMINARY RESULTS FROM THE NEUTRAL DETECTOR AT VEPP-2M

Bukin, A.D. ; Vasserman, I.B. ; Vorobev, P.V. ; et al.
IYF-83-80, 1983.
Inspire Record 192041 DOI 10.17182/hepdata.37136

None

1 data table

Axis error includes +- 0.0/0.0 contribution (?////).


THE RESULTS OF EXPERIMENTS WITH CMD ON VEPP-2M STORAGE RING

Anikin, G.V. ; Barkov, L.M. ; Khazin, B.I. ; et al.
IYF-83-85, 1983.
Inspire Record 192095 DOI 10.17182/hepdata.37149

None

5 data tables

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STUDY OF THE REACTION E+ E- ---> PI+ PI- IN THE ENERGY RANGE FROM 640-MEV - 1400-MEV

Kurdadze, L.M. ; Lelchuk, M.Yu. ; Pakhtusova, E.V. ; et al.
Sov.J.Nucl.Phys. 40 (1984) 286-295, 1984.
Inspire Record 208231 DOI 10.17182/hepdata.17648
1 data table

Axis error includes +- 0.0/0.0 contribution (?////NOT GIVEN).


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

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

Druzhinin, V.P. ; Golubev, V.B. ; Ivanchenko, V.N. ; et al.
Phys.Lett.B 144 (1984) 136-140, 1984.
Inspire Record 202874 DOI 10.17182/hepdata.6570

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

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

No description provided.

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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