Strangeness fluctuations and MEMO production at FAIR

Abstract We apply a coupled transport-hydrodynamics model to discuss the production of multi-strange meta-stable objects in Pb + Pb reactions at the FAIR facility. In addition to making predictions for yields of these particles we are able to calculate particle dependent rapidity and momentum distributions. We argue that the FAIR energy regime is the optimal place to search for multi-strange baryonic object (due to the high baryon density, favoring a distillation of strangeness). Additionally, we show results for strangeness and baryon density fluctuations. Using the UrQMD model we calculate the strangeness separation in phase space which might lead to an enhanced production of MEMOs compared to models that assume global thermalization.

[1]  V. Cerný,et al.  Evidence for an exotic S= -2, Q= -2 baryon resonance in proton-proton collisions at the CERN SPS. , 2004, Physical review letters.

[2]  H. Crawford.  H-particle searches with heavy ions , 1998 .

[3]  Stephenson,et al.  Strangeness -3 dibaryons. , 1987, Physical review letters.

[4]  S. U. Pandey,et al.  First results from the H0 di-baryon search and hyperon production measurements by the AGS Experiment 896. , 1999 .

[5]  M. May,et al.  Addendum to “Search for the weak decay of anHdibaryon” , 1997 .

[6]  J. Zakrzewski,et al.  The identified ΛΛ-hypernuclei and the predicted H-particle , 1989, Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences.

[7]  Joachim A. Maruhn,et al.  Relativistic hydrodynamics for heavy-ion collisions. I. General aspects and expansion into vacuum☆ , 1995 .

[8]  Detectability of strange matter in heavy ion experiments , 1996, nucl-th/9611052.

[9]  Greiner,et al.  Metastable exotic multihypernuclear objects. , 1992, Physical review. C, Nuclear physics.

[10]  S. Bass,et al.  Microscopic models for ultrarelativistic heavy ion collisions , 1998, nucl-th/9803035.

[11]  F. Dyson,et al.  Y=2 States in Su(6) Theory , 1964 .

[12]  S. Bass,et al.  RELATIVISTIC HADRON-HADRON COLLISIONS IN THE ULTRA-RELATIVISTIC QUANTUM MOLECULAR DYNAMICS MODEL , 1999, hep-ph/9909407.

[13]  F. Becattini,et al.  Erratum to: Thermal hadron production in pp and pp¯ collisions , 2014 .

[14]  A. Aerts,et al.  Multibaryon states in the bag model , 1978 .

[15]  Relativistic Hydrodynamics for Heavy--Ion Collisions -- II. Compression of Nuclear Matter and the Phase Transition to the Quark--Gluon Plasma , 1995, nucl-th/9504021.

[16]  Gilson,et al.  Stability of very small strangelets. , 1993, Physical review letters.

[17]  E. Stenlund,et al.  Interactions between hadrons and nuclei: The Lund Monte Carlo - FRITIOF version 1.6 - , 1987 .

[18]  M. Landry,et al.  Production of (4)(double Lambda)H hypernuclei. , 2001, Physical review letters.

[19]  J. Cleymans,et al.  Canonical description of strangeness conservation and particle production , 1991 .

[20]  K. Liu,et al.  Detection of nuclear-bag states , 1978 .

[21]  Greiner,et al.  Strange hadronic matter. , 1993, Physical review letters.

[22]  J. Cleymans,et al.  Chemical and thermal freezeout parameters from 1-A/GeV to 200-A/GeV , 1999, nucl-th/9903063.

[23]  Stephenson,et al.  "Inevitable" nonstrange dibaryon. , 1989, Physical review. C, Nuclear physics.

[24]  Greiner,et al.  Distillation and survival of strange-quark-matter droplets in ultrarelativistic heavy-ion collisions. , 1991, Physical review. D, Particles and fields.

[25]  Horst Stöcker,et al.  Poincare invariant Hamiltonian dynamics: Modelling multi-hadronic interactions in a phase space approach , 1989 .

[26]  B. Andersson,et al.  A Model for Low p(t) Hadronic Reactions, with Generalizations to Hadron - Nucleus and Nucleus-Nucleus Collisions , 1987 .

[27]  R. J. Oakes.  Baryon-Baryon Interactions and the Eightfold Way , 1963 .

[28]  A. Andronic,et al.  Hadron production in central nucleus-nucleus collisions at chemical freeze-out , 2005, nucl-th/0511071.

[29]  Greiner,et al.  Separation of strangeness from antistrangeness in the phase transition from quark to hadron matter: Possible formation of strange quark matter in heavy-ion collisions. , 1987, Physical review letters.

[30]  Erwin,et al.  Search for the weak decay of a lightly bound H0 dibaryon , 2000, Physical review letters.

[31]  H. Stöcker,et al.  Collective effects and nuclear stopping , 1994 .

[32]  C. J. Sparks,et al.  Search with Synchrotron Radiation for Superheavy Elements in Giant-Halo Inclusions. , 1977 .

[33]  Chung,et al.  Observation of a (Lambda Lambda)He-6 double hypernucleus , 2001 .

[34]  G. Turchetti,et al.  Possible rising trajectories in the pp system , 1969 .

[35]  Lian-shou Liu,et al.  Charmless decays of the B-meson in perturbative QCD , 1999 .

[36]  L. Libby.  Repulsive core and interaction energy in proton-proton scattering , 1969 .

[37]  Marcus Bleicher,et al.  Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage , 2008, 0806.1695.

[38]  D. Zschiesche,et al.  (3+1)-dimensional hydrodynamic expansion with a critical point from realistic initial conditions , 2007, 0710.0332.

[39]  A. Aerts,et al.  Narrow dibaryons of strangeness S = −1? , 1984 .

[40]  Robert L. Jaffe,et al.  Perhaps a Stable Dihyperon , 1977 .

[41]  Holstein,et al.  Weak decays of the H dibaryon. , 1986, Physical review. D, Particles and fields.

[42]  Bohm,et al.  Strangelet search in Pb-Pb interactions at 158 GeV/c per nucleon. , 1996, Physical review letters.

[43]  T. Sjöstrand.  High-energy-physics event generation with PYTHIA 5.7 and JETSET 7.4 , 1994 .

[44]  Schaffner-Bielich,et al.  Dibaryons with strangeness: their weak nonleptonic decay using SU(3) symmetry and how to find them in relativistic heavy-Ion collisions , 1999, Physical review letters.

[45]  F. Becattini,et al.  Centrality dependence of strangeness production in heavy-ion collisions as a geometrical effect of core–corona superposition , 2008, 0811.3766.

[46]  H. Stöcker,et al.  POPULATION OF MULTI-QUARK STATES IN EXOTIC MULTIPLETS AND THERMALIZATION IN ULTRA-RELATIVISTIC HEAVY ION COLLISIONS , 2008 .