PolarizedΛ-Baryon Production inppCollisions
نویسندگان
چکیده
منابع مشابه
Baryon Production at Pep*
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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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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We use a form of the fluctuation-dissipation theorem to derive formulas giving the rate of production of spin-1/2 baryons in terms of the fluctuations of either meson or quark fields. The most general formulas do not assume thermal or chemical equilibrium. When evaluated in a thermal ensemble we find equilibration times on the order of 10 fm/c near the critical temperature in QCD. PACS: 12.38.M...
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We consider decays of the lowest-lying positive parity (56-plet) and negative parity (70-plet) excited baryons. For the 70-plet, we include both single-quark and two-quark decay operators, and find, somewhat mysteriously, that the twoquark operators are not phenomenologically important. Studies of decays 70 → ∆+γ may strengthen or vitiate this observation. For the 56-plet decays, now using only...
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In a one-pion plus one-kaon exchange model, we calculate the kaon production cross sections in nucleon-nucleon, nucleon-delta and delta-delta interactions. We find that this model describes reasonably well the experimental data on kaon production in the proton-proton interaction. Near the kaon production threshold, the cross section obtained from this model is smaller than that from the linear ...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1998
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.81.530