Budker, G.I.
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Investigation of the ϱ-meson resonance with electron-positron colliding beams

Auslander, V.L. ; Budker, G.I. ; Pestov, Ju N. ; et al.
Phys.Lett.B 25 (1967) 433-435, 1967.
Inspire Record 1392895 DOI 10.17182/hepdata.29437

Preliminary results on the determination of the position and shape of the ϱ-meson resonance with electron-positron colliding beams are presented.

3 data tables
Table 1

FITTED PEAK CROSS SECTION IS 1.2 +- 0.2 MUB.

Table 1

Measured value of the pion form factor

Table 2

Fitted peak cross section.


A STUDY OF THE REACTION anti-p n ---> pi- pi- pi+ AT CENTER-OF-MASS ENERGIES BETWEEN 1.9-GeV AND 2.3-GeV

Darling, T. ; Opat, G.I. ; Tovey, S.N. ; et al.
Nuovo Cim.A 79 (1984) 181, 1984.
Inspire Record 14076 DOI 10.17182/hepdata.37516

We have studied the reactions\(\bar pn \to \pi ^ -\pi ^ -\pi ^ +(\pi ^0 )\) at incident momenta between 0.42 and 1.65 GeV/c using two exposures in deuterium-filled bubble chambers. The ratio of the rates for 3π to 4π final states shows a sharp increase at a momentum of about 0.8 GeV/c. A full partial-wave analysis of the 3π final state has been made and complex structure is observed at approximately the same momentum, associated in particular with theJP=3+ final state.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Anti-proton-nucleon scattering in deuterium below 1.0 gev/c

Caro, D.E. ; Gold, E. ; Klein, A.G. ; et al.
Nucl.Phys.B 52 (1973) 301-315, 1973.
Inspire Record 84262 DOI 10.17182/hepdata.32647

The p p and p n elastic differential cross sections have been extracted from the reaction p d→ p pn in which the deuteron breaks up. The incident antiproton momenta were 0.480, 0.735 and 0.940 GeV/ c , and the range of the momentum transfers was 0.04 < ∣ t ∣ < 0.7 (GeV/ c ) 2 . Both p p and p n differential cross sections are diffraction-like, with structure similar to the higher-momentum data.

4 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.

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MEASUREMENT OF DIFFERENTIAL CROSS-SECTIONS FOR INVERSE PION ELECTROPRODUCTION (PI- P ---> E+ E- N) AT THE PION ENERGY E = 164-MEV. (IN RUSSIAN)

Alizade, V.V ; Blokhintseva, T.D. ; Berezhnev, S.F. ; et al.
Yad.Fiz. 30 (1979) 142-145, 1979.
Inspire Record 146077 DOI 10.17182/hepdata.18992

None

2 data tables
Table 1

No description provided.

Table 2

DISTRIBUTIONS OF EVENTS IN THETA, PSI AND Q**2.


Measurement of the electron-positron annihilation cross-section into pi+ pi-, k+ k- pairs at the total energy 1.18-1.34 gev

Balakin, V.E. ; Budker, G.I. ; Kurdadze, L.M. ; et al.
Phys.Lett.B 41 (1972) 205-208, 1972.
Inspire Record 75634 DOI 10.17182/hepdata.28229

Using the electron-position storage ring VEPP-2 an experiment has been performed in which the cross-sections of the reactions e + e − → π + π − and e + e − →K + K − were measured in the energy regi on 1.18–1.34 GeV. The experimental values of the formfactors lie higher than curves extrapolated from the ϱ- and ϕ-meson region.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


Investigation of the phi-meson resonance by electron-positron colliding beams

Balakin, V.E. ; Budker, G.I. ; Pakhtusova, E.V. ; et al.
Phys.Lett.B 34 (1971) 328-332, 1971.
Inspire Record 69313 DOI 10.17182/hepdata.28704

Using the colliding beam machine, VEPP-2, the excitation curve of the ø-meson resonance was investigated in the three main decay modes. The resonance parameters obtained are the width, the total cross-section and the branching ratios. Namely: Γ = (4.67 ± 0.42) Mev B ( K + K − ) = (54.0 ± 3,4) % σ o = (3.96 ± 0.35) μB B ( K o s K O L ) = (25.7 ±3,0) % B ( e + e − = (2,81 ± 0.25) × 10 −4 B ( π + π − π o ) = (20.3 ± 4,2) %

2 data tables
Table 1

BREIT-WIGNER FITS TO DATA POINTS AT 9 ENERGIES AROUND PHI FOR EACH CHANNEL. PEAK CROSS SECTIONS QUOTED.

Table 2

PION FORM FACTOR AT PHI MASS, ALLOWING FOR POSSIBLE INTERFERENCE.


Determination of Nucleon and Pion Form-factors by Analyzing the $\pi^- p \to e^+ e^- \pi$ Reaction at E ($\pi$) = 164-{MeV}

Alizade, V.V. ; Berezhnev, S.F. ; Blokhintseva, T.D. ; et al.
Sov.J.Nucl.Phys. 33 (1981) 189, 1981.
Inspire Record 154897 DOI 10.17182/hepdata.39237

None

3 data tables
Table 1

No description provided.

Table 2

No description provided.

Table 3

No description provided.


RESONANCE PRODUCTION IN THE REACTION anti-p d ---> p(s) pi+ pi- pi- pi0 AT 0.4-GeV/c TO 0.9-GeV/c ANTI-PROTON MOMENTA

Kasper, P. ; Chapman, G. ; DeRoach, J. ; et al.
Nucl.Phys.B 156 (1979) 207-224, 1979.
Inspire Record 7267 DOI 10.17182/hepdata.34660

Resonance production has been studied in the annihilation process p n aarπ + π - π - π 0 induced by antiprotons in the 0.4 to 0.9 GeV/ c momentum range. We observe strong production of ϱ mesons, together with some f 0 (predominantly in the ϱf 0 channel), ω 0 and A 2 mesons and there is a strong ϱϱ signal. We also observe a broad (~300 MeV/ c 2 ) enhancement at ~1100 MeV/c 2 in the π + π - π - invariant-mass distribution, whereas no such enhancement is seen in the π + π - π 0 channel; we have considered various explanations for this enhancement, including an “A 1 ” effect and interference between amplitudes for conventional resonance production.

1 data table
Table 1

FITTED PERCENTAGE OF EACH RESONANCE CHANNEL. THE AUTHORS ALSO QUOTE VERY SIMILAR RESULTS FOR THREE OTHER FITS WHICH ALLOW FOR THE <A1(1100)- PI0> CHANNEL OR BOSE-EINSTEIN INTERFERENCE.