E+ E- --> PI+ PI-
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Version 2
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.


High Precision Measurements of the Form Factors of Pion, Kaon, and Proton at Large Timelike Momentum Transfers

Seth, Kamal K. ; Dobbs, S. ; Metreveli, Z. ; et al.
Phys.Rev.Lett. 110 (2013) 022002, 2013.
Inspire Record 1189656 DOI 10.17182/hepdata.130771

High precision measurements of the form factors of proton, pion, and kaon for timelike momentum transfers of |Q^2|=s=14.2 and 17.4 GeV^2 have been made. Data taken with the CLEO-c detector at sqrt(s)=3.772 GeV and 4.170 GeV, with integrated luminosities of 805 pb^-1 and 586 pb^-1, respectively, have been used to study $e^+e^-$ annihilations into pi+pi-, K+K^-, and ppbar. The perturbative QCD prediction that at large Q^2 the quantity Q^2F(Q^2) for vector mesons is nearly constant, and varies only weakly as the strong coupling constant alpha_S(Q^2) is confirmed for both pions and kaons. In contrast, a significant difference is observed between the values of the corresponding pQCD suggested near-constant quantity, |Q^4|G_M(|Q^2|)/mu_p for protons at |Q^2|=14.2 GeV^2 and 17.4 GeV^2. The results suggest the constancy of |Q^2|G_M(|Q^2|)/mu_p, instead.

2 data tables
Born cross-section

Born cross section of $e^+e^-\rightarrow h^+h^-$

Timelike form factor

Timelike form factor


rivet Analysis
Summary of experiments with the neutral detector at the e+ e- storage ring VEPP-2M

Dolinsky, S.I. ; Druzhinin, V.P. ; Dubrovin, M.S. ; et al.
Phys.Rept. 202 (1991) 99-170, 1991.
Inspire Record 321108 DOI 10.17182/hepdata.19310

The complete results of the experiments carried out with the Neutral Detector at the e + e − storage ring VEPP-2M in the energy range 2 E =0.5–1.4 GeV are reviewed. The data sample corresponds to a total integrated luminosity of 19 pb −1 .

17 data tables
Table 1

ND results from Dolinsky et al., PL B174 (1986) 453.. Statistical errors only are shown. There is an additional systematic errorof 8%.

Table 2

New ND data.. Statistical errors only are shown. There is an additional systematic errorof 8%.

Table 3

Averaged ND data.. Statistical errors only are shown. There is an additional systematic errorof 8%.

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rivet Analysis
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
Table 1

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


Version 2
Pion Form-factor Measurement in the Reaction $e^+ e^- \to \pi^+ \pi^-$ for Energies Within the Range From 0.4-{GeV} to 0.46-{GeV}

Vasserman, I.B. ; Ivanov, P.M. ; Kezerashvili, G.Ya. ; et al.
Yad.Fiz. 33 (1981) 709-714, 1981.
Inspire Record 167191 DOI 10.17182/hepdata.18823

None

1 data table
Table 1

Measured value of the total E+ E- --> PI+ PI- cross section


MEASUREMENTS OF THE EM TIMELIKE FORM-FACTORS FOR KAON AND PION AT S**(1/2) = 1.5-GEV

Esposito, B. ; Marini, A. ; Piano Mortari, Giovanni ; et al.
Lett.Nuovo Cim. 28 (1980) 337-342, 1980.
Inspire Record 158283 DOI 10.17182/hepdata.37369

None

1 data table
Table 1

No description provided.


MEASUREMENT OF PION FORM-FACTOR IN E+ E- ---> PI+ PI- REACTION NEAR PRODUCTION THRESHOLD. (IN RUSSIAN)

Vasserman, I.B. ; Kurdadze, L.M. ; Sidorov, V.A. ; et al.
Sov.J.Nucl.Phys. 30 (1979) 519, 1979.
Inspire Record 148297 DOI 10.17182/hepdata.18997

None

1 data table
Table 1

RADIATIVE CORRECTIONS APPLIED.