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rivet Analysis
The Pion Electromagnetic Form-factor in the Timelike Energy Range 1.35-{GeV} $\le \sqrt{s} \le$ 2.4-{GeV}

The DM2 collaboration Bisello, D. ; Busetto, G. ; Castro, A. ; et al.

Phys.Lett.B 220 (1989) 321-327, 1989.

Inspire Record 267118 DOI 10.17182/hepdata.29829

The e + e − → π + π − cross section has been measured from about 280 events (an order of magnitude more than the previous world statistics) in the energy interval 1.35 ⩽ s ⩽ 2.4 GeV with the DM2 detector at DCI. The pion squared form factor | F π | 2 shows a deep minimum around 1.6 GeV/ c 2 and is better fit under the hypothesis of two ϱ-like resonance ⋍0.25 GeV/ c 2 wide with 1.42 and 1.77 GeV/ c 2 masses.

1 data table

Table 1

Statistical errors only.

rivet Analysis
A Measurement of $\gamma \gamma \to \rho^+ \rho^-$

The ARGUS collaboration Albrecht, H. ; Bockmann, P. ; Glaser, R. ; et al.

Phys.Lett.B 217 (1989) 205-210, 1989.

Inspire Record 266416 DOI 10.17182/hepdata.29853

The reaction γγ → ϱ + ϱ − → π + π − π 0 π 0 has been studied with the ARGUS detector at the e + e − storage ring DORIS II at DESY. Near threshold, the cross section for this reaction is about four times smaller than for the reaction γγ → ϱ 0 ϱ 0 .

4 data tables

Table 1

Data read from graph.

Table 2

Data read from graph.

Table 3

Data read from graph.

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rivet Analysis
$K^0(s$) $K \pi$ Production in Tagged and Untagged $\gamma \gamma$ Interactions

The CELLO collaboration Behrend, H.J. ; Criegee, L. ; Dainton, J.B. ; et al.

Z.Phys.C 42 (1989) 367, 1989.

Inspire Record 266414 DOI 10.17182/hepdata.15529

We have searched for resonance production in the reaction γγ→Ks0Kπ. No signal was found for theηc and an upper limit for the radiative with$\Gamma _{\gamma \gamma }^{\eta _c } $ keV (95% c.l.) is obtained. For the glueball candidate η(1440) (previouslyi) the upper limit$\Gamma _{\gamma \gamma }^{\eta (1440)} B(\eta (1440) \to K\bar K\pi )< 1.2keV(95\% c.l.)$ is derived. In the tagged data sample resonance formation of a spin 1 state at 1420 MeV is observed, which is absent in the untagged data. The mass and width of this state are consistent with those of thef1(1420); an analysis of decay angular distributions favours positive parity.

1 data table

Table 1

Data read from graph.. Additional overall systematic error decreasing from 25% in the lowest mass bins to 15% for M > 2.0 GeV.

Cross-section Measurement of $\pi^- p \to \pi^- \pi^+ n$ Reaction Near Threshold

The OMICRON collaboration Kernel, G. ; Korbar, D. ; Krizan, P. ; et al.

Phys.Lett.B 216 (1989) 244-248, 1989.

Inspire Record 264989 DOI 10.17182/hepdata.29858

Result of cross section measurements for the reaction π − p → π − π + n are presented. They cover a range of incident pion momenta between 295 and 450 MeV/ c . It is the first time that the cross section has been measured so close to threshold. The experiment was performed with Omicron, a large-solid-angle spectrometer, which enables a measurement of the full set of kinematic variables. In the region of overlap there is a good agreement with other experiments. The extracted value for the chiral-symmetry-breaking parameter ξ is seen to be largely extrapolition dependent but the measured value of -0.5±0.8 leaves Weinberg's prediction of ξ =0 the only remaining choice.

1 data table

Table 1

No description provided.

Observation of a New $\Omega^*$- at 2.47-{GeV}/$c^2$ in $K^- p$ Interactions at 11-{GeV}/$c$

Aston, D. ; Awaji, N. ; Bienz, T. ; et al.

Phys.Lett.B 215 (1988) 799-804, 1988.

Inspire Record 264666 DOI 10.17182/hepdata.29872

Clear evidence is presented for an Ω ∗− resonance of mass 2474±12 MeV c 2 and width 72±33 MeV c 2 in K − p interactions at 11 GeV c . The state is observed in the Ω − π + π − decay mode, and the corresponding inclusive cross section, corrected for Ω − π 0 π 0 decay, is estimated to be 290±90 nb.

1 data table

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rivet Analysis
The Pion Electromagnetic Form-factor in the Timelike Energy Range 1.35-{GeV} $\le \sqrt{s} \le$ 2.4-{GeV}

rivet Analysis
A Measurement of $\gamma \gamma \to \rho^+ \rho^-$

rivet Analysis
$K^0(s$) $K \pi$ Production in Tagged and Untagged $\gamma \gamma$ Interactions

Cross-section Measurement of $\pi^- p \to \pi^- \pi^+ n$ Reaction Near Threshold

Observation of a New $\Omega^*$- at 2.47-{GeV}/$c^2$ in $K^- p$ Interactions at 11-{GeV}/$c$

FORWARD AND BACKWARD ANGLES DIFFERENTIAL CROSS-SECTION FOR DEUTERON PHOTODISINTEGRATION AT INTERMEDIATE-ENERGIES

RESULTS ON LAMBDA(c)+, D(s)+, D0 AND D+ PRODUCTION PROPERTIES IN 230-GeV/c pi- Cu INTERACTIONS FROM THE NA32 EXPERIMENT

TOTAL DISINTEGRATION OF HELIUM NUCLEI IN He-3 p INTERACTIONS AT 13.5-GeV/c

Direct Photon Production in $\bar{p} p$ Collisions at $\sqrt{s}=630$-{GeV}

Evidence of Isospin Effects in Anti-proton - Nucleus Annihilation