New capabilities in the INCL intranuclear cascade model. DPhN (Nuclear Science Department) Production of strange particles and hypernuclei in nuclear reactions at a few GeV. New capabilities in the INCL intranuclear cascade model. Jean-Christophe David The 13th International Conference on Hypernuclear and Strange Particle Physics June 24-29, 2018 – Portsmouth (USA)

New capabilities in the INCL intranuclear cascade model. Introduction Production of strange particles and hypernuclei in nuclear reactions at a few GeV. New capabilities in the INCL intranuclear cascade model. So-called spallation reactions Reaction between a light projectile and a nucleus Divided in 2 steps an intranuclear cascade de-excitation of a hot nucleus Production of strange particles and hypernuclei in INCL

New capabilities in the INCL intranuclear cascade model. Introduction Production of strange particles and hypernuclei in nuclear reactions at a few GeV. New capabilities in the INCL intranuclear cascade model. INCL treats the first step  ~2010: up to 2-3 GeV 2011: up to ~15 GeV (multipions) Combined to Abla for the de-excitation Production of strange particles and hypernuclei in INCL

New capabilities in the INCL intranuclear cascade model. Introduction Production of strange particles and hypernuclei in nuclear reactions at a few GeV. New capabilities in the INCL intranuclear cascade model. INCL treats the first step  ~2010: up to 2-3 GeV 2011: up to ~15 GeV (multipions) 2018: K, L, S added improved high energies open new possibilities strange particle emission hypernucleus production Combined to Abla for the de-excitation L evaporation + Hyperfission added Production of strange particles and hypernuclei in INCL

New capabilities in the INCL intranuclear cascade model. Introduction Production of strange particles and hypernuclei in nuclear reactions at a few GeV. New capabilities in the INCL intranuclear cascade model. INCL treats the first step  ~2010: up to 2-3 GeV 2011: up to ~15 GeV (multipions) 2018: K, L, S added improved high energies open new possibilities strange particle emission hypernucleus production Combined to Abla for the de-excitation L evaporation + Hyperfission added With A renewal interest of hypernucleus studies INCL/Abla in Geant4 Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Plan Ingredients of the models Results K production L production Hypernucleus production Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Ingredients sreaction(prod./scatt./abs.) From exp. data, symmetries, models, hypotheses (E, Q) output particles From exp. data, or isotropy, or phase-space Nuclear Potential L:-28 / S:16 / K+:25 / K-:-60 / K0:15 / K0:-50 MeV Decay Not in the nucleus, except S0 I N C L Production of strange particles and hypernuclei in INCL

Ingredients sreaction(prod./scatt./abs.) From exp. data, symmetries, models, hypotheses (E, Q) output particles From exp. data, or isotropy, or phase-space Nuclear Potential L:-28 / S:16 / K+:25 / K-:-60 / K0:15 / K0:-50 MeV Decay Not in the nucleus, except S0 I N C L No resonances! Only final states (decay products) are taken into account All details in J. Hirtz et al., submitted to EPJ+ And a study about VL(A) in J.L. Rodriguez-Sanchez et al., submitted as Rapid Communication in PRC Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Ingredients Difficulty finding elementary cross sections! 1st set (382 channels) 17%, from experiments 18%, using isospin symmetry at initial/final states 37%, using isospin symmetry at intermediate steps (Feynman diagrams) 28%, from models and hypotheses 100% 2nd set from models and hypotheses Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results Kaon - Hyperon Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production KAOS - W. Scheinast et al., PRL 96, 072301 (2006) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K- production KAOS - W. Scheinast et al., PRL 96, 072301 (2006) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production LBL - S. Schnetzer et al., Phys. Rev. C 40, 640(1989) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production LBL - S. Schnetzer et al., Phys. Rev. C 40, 640(1989) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production LBL - S. Schnetzer et al., Phys. Rev. C 40, 640(1989) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production LBL - S. Schnetzer et al., Phys. Rev. C 40, 640(1989) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production Forward direction M. Büscher et al., Eur. Phys. J. A 22, 301-317(2004) Thanks Nikolai Mokhov for LAQGSM data Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K+ production – High energy E-802 Collaboration Phys. Rev. D 45, 3906 (1992) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – K0s production INCL overestimates, but a part explained by… C.-M. Herbach et al., NIMA 562 (2006) 729–732 sR(p+Nb – 1.2 GeV): 1063+/-40 mb HADES Collaboration, T.Gaitanos and J. Weil, Phys. Rev. C 90, 054906 (2014) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – L production HADES Collaboration, Eur. Phys. J. A (2014) 50:81 Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Efficiency UrQMD simulation HADES result Geant4 simulation HADES measurement Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results – L production (efficiency included) « Momentum content » beyond ~y=0.8 different from one model to another (UrQMD, GiBUU, INCL) Extrapolation in the «blind» zone difficult (model dependent) Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results Hypernuclei Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results - Hypernuclei Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Results - Hypernuclei Production of strange particles and hypernuclei in INCL

Production of strange particles and hypernuclei in INCL Conclusions Strangeness implemented in INCL (and Abla) … and INCL/Abla in Geant4  Ingredients not always well known… ...However, results quite good compared to exp. data or other models K+ production: OK in momenta and angles At forward emission angle data are missing Role of DN-induced channels . important at low Ep . improvement of elementary s needed K- production: Some key channels seem missing in INCL K0 production: A possible slight overestimation, but exp. data needed L production: Exp. data are too scarce to conclude, but encouraging Hypernucleus: Good results but too scarce data Future Improvements... X added ? New projectiles (e-, p) ? Production of strange particles and hypernuclei in INCL

Jose Luis Rodriguez Sanchez (Post-Doc) Abla Collaborators Jason Hirtz (PhD) INCL Jose Luis Rodriguez Sanchez (Post-Doc) Abla Alain Boudard, Joseph Cugnon, Sylvie Leray, Davide Mancusi, Georg Schnabel

Production of strange particles and hypernuclei in INCL Thank you! Production of strange particles and hypernuclei in INCL