V D Toneev and A S Parvan 2005 J. Phys. G: Nucl. Part. Phys. 31 583 doi:10.1088/0954-3899/31/7/005
Canonical strangeness and distillation effects in hadron production
V D Toneev1,2 and A S Parvan2,3
Show affiliationsThe strangeness canonical ensemble for Maxwell–Boltzmann statistics is reconsidered for excited nuclear systems with non-vanishing net strangeness. A new recurrence relation method is applied to find the partition function. The method is first generalized to the case of quantum strangeness canonical ensemble. Uncertainties in the calculation of the K+/π+ excitation function are discussed. A new scenario based on the strangeness distillation effect is put forward for a possible explanation of anomalous strangeness production observed at the bombarding energy ~30 GeV. The peaked maximum in the K+/π+ ratio is considered as a sign of the critical endpoint reached in evolution of the system rather than a latent heat jump emerging from the onset of the first-order deconfinement phase transition.
- PACS
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25.75.Nq Quark deconfinement, quark–gluon plasma production, and phase transitions
23.20.Lv gamma transitions and level energies
- Subjects
- Dates
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Issue 7 (July 2005)
Received 1 December 2004
Published 21 April 2005
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Canonical strangeness and distillation effects in hadron production
V D Toneev and A S Parvan 2005 J. Phys. G: Nucl. Part. Phys. 31 583
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