Analytic study of disoriented chiral condensates
نویسندگان
چکیده
منابع مشابه
Analytic Study of Disoriented Chiral
By introducing a quark source in the nonlinear σ model, we obtain an analytic boost-invariant solution as a candidate for the disoriented chiral condensate (DCC) in 3+1 dimensions. In order to trigger formation of the DCC, a strong transfer of axial isospin charge must occur between the expanding source and the interior in the baked Alaska scenario. An explicit chiral symmetry breaking is incor...
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We speculate that, in very high energy hadronic collisions, large fireballs may be produced with interiors which have anomalous chiral order parameters. Such a process would result in radiation of pions with distinctive momentum and isospin distributions, and may provide an explanation of Centauro and related phenomena in cosmic-ray events. The phenomenology of such events is reviewed, with emp...
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The idea that a bubble of misaligned vacuum is sometimes produced in high energy collisions is reviewed. Talk at XXIX Rencontres de Moriond, Méribel, March 1994 E-mail : [email protected] Laboratoire associé au C.N.R.S.
متن کاملStochastic Disoriented Chiral Condensates
Applying a Langevin description of the linear sigma model we investigate four different scenarios for the evolution of a disoriented chiral condensate: annealing or quench with initial conditions governed by effective ‘light’ or physical mass pions. We present pion number distributions estimated from the zero mode (i.e. k = 0-field) component. The best DCC signal is expected for the quench scen...
متن کاملDileptons from Disoriented Chiral Condensates
Disoriented chiral condensates or long wavelength pionic oscillations and their interaction with the thermal environment can be a significant source of dileptons. We calculate the yield of such dilepton production within the linear sigma model, both in a quantal mean-field treatment and in a semi-classical approximation. We then illustrate the basic features of the dilepton spectrum in a schema...
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ژورنال
عنوان ژورنال: Physical Review D
سال: 1996
ISSN: 0556-2821,1089-4918
DOI: 10.1103/physrevd.54.3556