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After a brief survey of the remarkable accomplishments of the current heavy ion collision experiments up to 200A GeV, we address in depth the role of strange particle production in the search for new phases of matter in these collisions. In particular, we show that the observed enhancement pattern of otherwise rarely produced multi-strange antibaryons can… (More)

- Jean Letessier, Andr E Ronveaux, Galliano Valent
- 1996

An explicit representation of the associated Meixner polynomials (with a real association parameter 0) is given in terms of hypergeometric functions. This representation allows to derive the fourth order diierence equation veriied by these polynomials. Appropriate limits give the fourth order diierence equation for the associated Charlier polynomials and… (More)

- Jean Letessier, Ahmed Tounsi, Ulrich Heinz, Josef Sollfrank, J. Rafelski
- 1992

A constraint between thermal fireball parameters arises from the requirement that the balance of strangeness in a fireball is (nearly) zero. We study the impact of this constraint on (multi-)strange (anti-)baryon multiplicities and compare the hadron gas and quark-gluon plasma predictions. We explore the relation between the entropy content and particle… (More)

We study soft hadron production in relativistic heavy ion collisions in a wide range of reaction energy, 4.8 GeV < √ sNN < 200 GeV, and make predictions about yields of particles using the statistical hadronization model. In fits to experimental data, we obtain both the statistical parameters as well as physical properties of the hadron source. We identify… (More)

- Jean Letessier
- 1994

We present results on co-recursive associated Laguerre and Jacobi polynomials which are of interest for the solution of the Chapman-Kolmogorov equations of some birth and death processes with or without absorption. Explicit forms, generating functions , and absolutely continuous part of the spectral measures are given. We derive fourth-order differential… (More)

- JEAN LETESSIER
- 2000

We review the methods and results obtained in an analysis of the experimental heavy ion collision research program at nuclear beam energy of 160–200A GeV. We study strange, and more generally, hadronic particle production experimental data. We discuss present expectations concerning how these observables will perform at other collision energies. We also… (More)

- Jean Letessier
- 1999

We interpret hadronic particle abundances produced in S–Au/W/Pb 200 A GeV reactions in terms of the final state hadronic phase space model and determine by a data fit of the chemical hadron freeze-out parameters. Allowing for the flavor abundance non-equilibrium a highly significant fit to experimental particle abundance data emerges, which supports… (More)

SHARE is a collection of programs designed for the statistical analysis of particle production in relativistic heavy-ion collisions. With the physical input of intensive statistical parameters, it generates the ratios of particle abundances. The program includes cascade decays of all confirmed resonances from the Particle Data Tables. The complete treatment… (More)

Much of the energy of the nuclei colliding at RHIC or SPS is converted into final state hadronic particles. About a quarter of this energy is in baryons and antibaryons. There are nearly 10 strange quark pairs per central rapidity participant. Do we really understand the hadronic particle yields? Do we need to introduce post-Fermi-model ideas such as… (More)

We study the cooling (heating) of a glue-parton gas due to production (destruction) of particles and determine the associated production of entropy. We incorporate sharing of the system energy among a changing number of particles. We find that the entropy of an evolving glue-parton gas changes in an insignificant range once the initial high temperature… (More)