1.
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Correlated inclusive $\Lambda \overline{Lambda}$ production in $e^{+}e^{-}$ annihilations at $\sqrt{s~}$10.5 GeV
/ Metreveli, Z V ; Seth, K K ; Tomaradze, A G ; Zweber, P ; Ahmed, S ; Alam, M S ; Jian, L ; Saleem, M ; Wappler, F ; Eckhart, E et al.
Using a 13.7 fb/sup -1/ sample of continuum two-jet e/sup +/e/sup -/ to qq events collected with the CLEO detector, we have searched for correlations between Lambda and Lambda particles, specifically in cases where the opening angle between the two particles is large and each has momentum >1 GeV/c. Such correlations may indicate the presence of baryon number conservation at the primary quark level. [...]
2002
- Published in : Phys. Rev. D 66 (2002) 052002/1-11
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2.
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3.
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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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4.
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Spin effects and the production of heavy baryons in $Z^{0}$ boson decays
/ Saleev, V A
Predictions are made within the scope of perturbative quantum chromodynamics and the nonrelativistic two-quark baryon model of the magnitude and dependence upon z (the fraction of the momentum of the heavy quark carried off by the baryon) of the longitudinal spin asymmetry parameter A/sub RL/ in the direct creation of Lambda /sub b / and Lambda /sub c/ baryons in the Z/sup 0/-boson channel in the LEP e/sup +/e/sup -/ collider. An estimate is found for the value of A /sub RL/( Lambda /sub b/) in the cascade production of Lambda /sub b/ baryons. [...]
1999
- Published in : Russ. Phys. J.: 42 (1999) , no. 2, pp. 203-13
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5.
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The leading-baryon effect in Lambda /sub b//sup 0/ production in proton-proton interactions at square root s=62 GeV
/ Basile, M ; Bonvicini, G ; Cesare, P D ; Cifarelli, L ; Contin, A ; D'Ali, G ; Esposito, B ; Giusti, P ; Massam, Thomas ; Nania, R et al.
The measurement of the longitudinal-momentum production distribution of the 'beauty'-flavoured baryon Lambda /sub b//sup 0/, in the reaction pp to e/sup +/+ Lambda /sub b//sup 0/+anything at square root s=62 GeV, shows clear evidence for a leading-baryon effect in Lambda /sub b//sup 0/ production. A comparison with the data on Lambda /sub c //sup +/, Lambda /sub s//sup 0/ and Lambda /sub s//sup 0/ production is also given. [...]
1981
- Published in : Nuovo Cimento A: 65 ser.2 (1981) , no. 3, pp. 408-13
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6.
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7.
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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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8.
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Measurement of the Lambda /sub c//sup +/ transverse momentum production distribution in pp interactions at square root s=62 GeV
/ Basile, M ; Cifarelli, L ; Contin, A ; D'Ali, G ; Di Cesare, P ; Esposito, B ; Giusti, P ; Massam, Thomas ; Palmonari, F ; Romeo, G C et al.
Reports on the first measurement of the transverse momentum production distribution of the Lambda /sub c//sup +/ charmed baryon in the reaction pp to Lambda /sub c//sup +/+e/sup -/+X. The Lambda /sub c //sup +/ is identified by its decay mode Lambda /sub c//sup +/ to pK /sup -/ pi /sup +/. [...]
1981
- Published in : Nuovo Cimento, Lett.: 30 ser.2 (1981) , no. 16, pp. 481-6
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9.
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First observation of the Sigma /sub c/*/sup +/ charmed baryon, and new measurements of the Sigma /sub c//sup 0/, Sigma /sub c//sup +/, Sigma /sub c//sup ++/, and Omega /sub c//sup 0/ charmed baryons
/ Andreas, A
Using ~13 7 fb/sup -1/ of e/sup +/ e/sup -/ collision data recorded at near the Upsilon (4S) resonance by the CLEO II and CLEO II V detector configurations on the Cornell Electron Storage Ring, we present the world's most precise measurements of the Sigma /sub c//sup 0/, Sigma /sub c//sup +/, and Sigma /sub c//sup ++/ charmed-baryon masses as well as the first measurements of the intrinsic widths of the Sigma /sub c//sup 0/ and Sigma /sub c//sup ++/ + baryons. We also report on the first observation and mass measurement of the Sigma /sub c/*/sup + /, charmed baryon, M( Sigma /sub c/*/sup +/) M( Lambda /sub c//sup +/) = (231 0 +or- 1 1 statu +or- 2 0 systu) MeV/c/sup 2/, and the first CLEO observation of the Omega /sub c//sup 0/ baryon, for which we measure a mass M( Omega /sub c//sup 0/) = (2694 6 +or- 2 6 statu 2 4 systu) MeV/c/sup 2/ from a sample of (40 4 +or- 9 0 statu) candidate events. [...]
2001
In : 30th International Conference on High-energy Physics, Osaka, Japan, 27 Jul - 2 Aug 2000, pp.387-90 (vol.1)
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10.
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The transverse-momentum distributions of particles produced in pp reactions and comparison with e/sup +/e/sup -/
/ Basile, M ; Cara Romeo, G ; Cifarelli, L ; Contin, A ; D'Ali, G ; Di Cesare, P ; Esposito, B ; Giusti, P ; Massam, Thomas ; Nania, R et al.
The comparison of the properties of multihadron systems, produced in high-energy pp reactions, with hadron jets produced in e/sup +/e/sup - / annihilation, is further extended through the study of the inclusive distributions in the reduced variable p/sub T//(p/sub T/). A good agreement with e/sup +/e/sup -/ data is found. [...]
1981
- Published in : Nuovo Cimento, Lett.: 31 ser.2 (1981) , no. 8, pp. 273-6
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