Baryon production in e+e-annihilations
نویسندگان
چکیده
منابع مشابه
Event Shapes and Power Corrections in ee Annihilations
When studying observables in the process ee → Hadrons, it is found that the perturbative QCD predictions have to be complemented by non-perturbative corrections of the form 1/Q, where Q is the centre-of-mass energy ECM , and the power p depends on the particular observable. For fully inclusive observables such as the total cross section p = 4, however, for less inclusive ones such as event shap...
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Several recent results of the ALEPH Collaboration covering different aspects of baryon production on the Z resonance are presented. In particular production rates of hyperons, the full kinematical reconstruction of the Λb, observation of Ξb in its semileptonic decay, and the measurements of the polarization of Λ and Λb baryons are discussed. Talk given at the HADRONS 96 conference 9.6. – 16.6. ...
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Hadron production in high energy collisions can be described by parton showers, followed by the formation of hadrons which cannot be described perturbatively. Gluon emission, the dominant process in parton showers, is proportional to the colour factor associated with the coupling of the emitted gluon to the emitter. These colour factors are CA = 3 when the emitter is a gluon and CF = 4/3 when i...
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Using a 13.7 fb sample of continuum two-jet e+e− → qq events collected with the CLEO detector, we have searched for correlations between Λ and Λ 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. A previous CLEO study of Λ...
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Measurements of inclusive A+i production for 1.0 ( p ( 10.0 GeV/c and p+i production for 0.4 < p < 2.0 GeV/c show significant baryon production in e+eannihilation at E = 29 Gev. ll+i production represents 0.2 A's or h's per PE$'E;ent while the observed p+i production implies all baryon-antibaryon pair production is occurring at least as often as 0.6 per event, depending on the yet to be measure...
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ژورنال
عنوان ژورنال: Journal of Physics G: Nuclear and Particle Physics
سال: 1993
ISSN: 0954-3899,1361-6471
DOI: 10.1088/0954-3899/19/9/004