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1.
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A study of the possible existence of $\rho'$ and $\rho''$
/ Alles-Borelli, V ; Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Giusti, P ; Massam, T ; Monari, L ; Palmonari, F ; Rimondi, F et al.
1975
- Published in : Nuovo Cimento A 30 (1975) 136-143
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2.
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Proof of comparable K-pair and pi -pair production from time-like photons of 15, 16, and 17 GeV and determination of the K-meson electromagnetic form factor
/ Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Massam, Thomas ; Monari, L ; Palmonari, F ; Rimondi, F ; Zichichi, A
The observation of 21 K/sup +/K/sup -/ pairs in 38 hadron pair events produced at 1.5, 1.6 and 1.7 GeV total centre-of-mass energies in e /sup +/e/sup -/ annihilations, establishes that time-like photons produce K pairs and pi pairs with comparable rates in this energy range. The K-meson electromagnetic form factor at a mean s-value of 2.4 GeV/sup 2/ is measured to be mod F/sub K/ mod =0.50+or-0.08. [...]
1973
- Published in : Phys. Lett. B 44 (1973) 393-6
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3.
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The time-like electromagnetic form factors of the charged pseudoscalar mesons from 144 to 90 GeV/sup 2/
/ Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Massam, Thomas ; Monari, L ; Palmonari, F ; Rimondi, F ; Zichichi, A
The study of 620 hadron pairs produced in the s-range (1.44-9.0) GeV /sup 2/, has yielded 110 collinear hadronic events. Their identification in terms of pi and K mesons allows the determination of the time-like electromagnetic from factors of these pseudoscalar mesons in the above time-like range. [...]
1973
- Published in : Phys. Lett. B 46 (1973) 261-4
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4.
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Direct check of QED in e/sup +/e/sup -/ interactions at high q/sup 2/- values
/ Alles-Borelli, V ; Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Massam, Thomas ; Monari, L ; Palmonari, F ; Zichichi, A
A study of 1824 e/sup +/e/sup -/ to e/sup +or-/e/sup -or+/ events in the total centre-of-mass energy range from 1.6 GeV to 2.0 GeV, allows one to establish that production angular distributions, acollinearity and acoplanarity distributions, and absolute value of the cross- sections and their energy-dependence, follow QED predictions including first-order radiative corrections. In particular, the absolute value of the cross-section and the power of its energy-dependence agree with theoretical expectations within +or-6% and +or-2%, respectively. [...]
1972
- Published in : Nuovo Cimento A: 7 ser.2 (1972) , no. 2, pp. 345-62
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5.
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e/sup +/e/sup -/ annihilation into two hadrons in the energy interval 1400-2400 MeV
/ Alles-Borelli, V ; Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Massam, Thomas ; Monari, L ; Palmonari, F ; Rimondi, F ; Zichichi, A
The proof is given for the existence of the reaction e/sup +/e/sup -/ to /sup +or-/h/sup -or+/ in the energy range 1400-2400 MeV, and its energy dependence is compared with that of e/sup +/e/sup -/ to e/sup +or-/E/sup -or+/, in the same experimental conditions of observation. The exponent of the s-dependence of the ratio alpha =(e/sup +/e/sup -/ to h/sup +or-/h/sup -or+/)/(e/sup +/e/sup -/ to e/sup +or-/e/sup -or+ /) is measured to be n=2.08+or-0.45, in the s-range (1.96-5.76)GeV/sup 2/, on the basis of 51 e/sup +/e/sup -/ to /sup +or-/h/sup -or+/ events and 8918 e/sup +/e/sup -/ to /sup +or-/e/sup -or+/ events observed. [...]
1972
- Published in : Phys. Lett. B 40 (1972) 433-6
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6.
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A detailed study of exclusive and inclusive $(e^{+}e^{-})$ induced processes in the energy range 1.2-3.0 GeV
/ Zichichi, A (CERN) ; Bollini, D ; Bernardini, A ; Brunini, P L ; Massam, Thomas ; Monari, L ; Palmonari, F ; Rimondi, F
The authors have studied a total of 26208 events produced in (e/sup + /e/sup -/) reactions in the energy range from 1.2 to 3.0 GeV. All these events had to have at least two charged particles in the final state with an energy cut-off, depending on the nature of the particle: E/sub e/>or=100 MeV; E/sub pi />or=100 MeV; E/sub K/>or=225 MeV. [...]
1974
Published version: PDF;
In : 17th International Conference on High-energy Physics, London, UK, 1 - 10 Jul 1974, pp.IV.6-9
Lepton physics at CERN and Frascati, London, UK, 1 - 10 Jul 1974, pp.312-315
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7.
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8.
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Study of charged final states produced in $e^{+}e^{-}$ interactions
/ Alles-Borelli, V ; Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Frabetti, P L ; Massam, Thomas ; Monari, L ; Palmonari, F ; Zichichi, A
1971
In : 8th International School of Subnuclear Physics "Ettore Majorana", pt.B, Erice, Italy, 1 - 19 Jul 1970, pp.790-809
Lepton physics at CERN and Frascati, Erice, Italy, 1 - 19 Jul 1970, pp.236-259
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9.
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A study of the hadronic angular distribution in $(e^{+}e^{-}$ processes from 1.2 to 3.0 GeV
/ Bernardini, M (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Bollini, D (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Brunini, P L (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Fiorentino, E (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Massam, T (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Monari, L (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Palmonari, F (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Rimondi, F (CERN ; INFN, Bologna ; Bologna U. ; Frascati) ; Zichichi, A (CERN ; INFN, Bologna ; Bologna U. ; Frascati)
The angular distribution of 2720 tracks of 1085 hadronic final states produced from (e/sup +/e/sup -/) annihilation has been studied in the 1.2 to 3.0 GeV total centre-of-mass energy range. If the angular distribution is parametrised in terms of f( theta )=1+A cos/sup 2/ theta where theta is the angle between the hadronic track produced and the colliding-beam direction, the results show that A is less than 0.21, with 90% confidence. [...]
1975
- Published in : 10.1007/BF02900540
In : Lepton physics at CERN and Frascati, pp.343
17th International Conference on High-energy Physics, London, UK, 1 - 10 Jul 1974
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10.
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$e^{+}e^{-}$ annihilation into two hadrons in the energy interval 1400-2400 MeV
/ Alles-Borelli, V ; Bernardini, M ; Bollini, D ; Brunini, P L ; Fiorentino, E ; Massam, Thomas ; Monari, L ; Palmonari, F ; Rimondi, F ; Zichichi, A
1972
- Published in : Phys. Lett. B 40 (1972) 433
In : Lepton physics at CERN and Frascati, pp.332
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