Adye, T.
E+ E- Scattering
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Multihadron production through the photon-photon interaction

Paoluzi, L. ; Ceradini, F. ; Ferrer, M.L. ; et al.
Lett.Nuovo Cim. 10S2 (1974) 435-439, 1974.
Inspire Record 96130 DOI 10.17182/hepdata.37454

None

1 data table
Table 1

TWO EVENTS SEEN WITH MASSES 800 +- 90 MEV AND 1400 +- 90 MEV. THE FIRST WHEN INTERPRETED AS ETAPRIME PRODUCTION GIVES A WIDTH OF 11, +15, -8 KEV FOR ETAPRIME --> 2GAMMA USING THE EQUIVALENT PHOTON APPROXIMATION.


Proof of comparable K pair and pi pair production from time-like photons of 1.5-GeV, 1.6-GeV, and 1.7-GeV and determination of the K meson electromagnetic form factor.

Bernardini, M. ; Bollini, D. ; Brunini, P.L. ; et al.
Phys.Lett.B 44 (1973) 393-396, 1973.
Inspire Record 85276 DOI 10.17182/hepdata.28101

The observation of 21 K + K − pairs in 38 hadron pair events produced at 1.5, 1.6, and 1.7 GeV total centre-of-mass energies in e + e − annihilations, establishes that time-like photons produce K pairs and π pairs with comparable rates in this energy range. The K-meson electromagnetic form factor at a mean s -value of 2.4 GeV 2 is measured to be | F K | = 0.50±0.08. The number of e + e − pairs observed in the same angular and energy range is 5148.

1 data table
Table 1

No description provided.


The time-like electromagnetic form factors of the charged pseudoscalar mesons from 1.44-GeV**2 to 9.0-GeV**2.

Bernardini, M. ; Bollini, D. ; Brunini, P.L. ; et al.
Phys.Lett.B 46 (1973) 261-264, 1973.
Inspire Record 85277 DOI 10.17182/hepdata.28063

The study of 620 hadron pairs produced in the s -range (1.44−9.0) GeV 2 , has yielded 110 collinear hadronic events. Their identification in terms of π and K mesons allows the determination of the time-like electromagnetic from factors of these pseudoscalar mesons in the above time-like range. The total number of (e + e − ) events observed in the same experimental conditions is 18 048.

2 data tables
Table 1

No description provided.

Table 2

No description provided.


E+ e- annihilation into two hadrons in the energy interval 1400-2400 mev

Alles-Borelli, V. ; Bernardini, M. ; Bollini, D. ; et al.
Phys.Lett.B 40 (1972) 433-436, 1972.
Inspire Record 75693 DOI 10.17182/hepdata.28268

The proof is given for the existence of the reaction e + e − → h ± h ∓ in the energy range 1400–2400 MeV, and its energy dependence is compared with that of e + e − → e ± e ∓ , in the same experimental conditions of observation. The exponent of the s -dependence of the ratio α = (e + e − → h ± h ∓ )/ (e + e − → e ± e ∓ ) is measured to be n = 2.08 ± 0.45, in the s -range (1.96 − 5.76) GeV 2 , on the basis of 51 e + e − → h ± h ∓ events and 8918 e + e − → e ± e ∓ events observed.

1 data table
Table 1

CROSS SECTION FOR PRODUCTION OF CHARGED HADRON PAIRS.