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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.


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.