Sub-threshold production of K^{0}_{s} mesons and {\Lambda} hyperons in Au(1.23A GeV)+Au
Nuclear Experiment
2019-05-22 v1
Abstract
We present first data on sub-threshold production of K0 s mesons and {\Lambda} hyperons in Au+Au collisions at = 2.4 GeV. We observe an universal <Apart> scaling of hadrons containing strangeness, independent of their corresponding production thresholds. Comparing the yields, their <Apart> scaling, and the shapes of the rapidity and the pt spectra to state-of-the-art transport model (UrQMD, HSD, IQMD) predictions, we find that none of the latter can simultaneously describe all observables with reasonable \c{hi}2 values.
Keywords
Cite
@article{arxiv.1812.07304,
title = {Sub-threshold production of K^{0}_{s} mesons and {\Lambda} hyperons in Au(1.23A GeV)+Au},
author = {HADES collaboration and J. Adamczewski-Musch and O. Arnold and C. Behnke and A. Belounnas and A. Belyaev and J. C. Berger-Chen and J. Biernat and A. Blanco and C. Blume and M. Böhmer and P. Bordalo and S. Chernenko and L. Chlad and C. Deveaux and J. Dreyer and A. Dybczak and E. Epple and L. Fabbietti and O. Fateev and P. Filip and P. Fonte and C. Franco and J. Friese and I. Fröhlich and T. Galatyuk and J. A. Garzon and R. Gernhäuser and M. Golubeva and R. Greifenhagen and F. Guber and M. Gumberidze and S. Harabasz and T. Heinz and T. Hennino and S. Hlavac and C. Höhne and R. Holzmann and A. Ierusalimov and A. Ivashkin and B. Kämpfer and T. Karavicheva and B. Kardan and I. Koenig and W. Koenig and B. W. Kolb and G. Korcyl and G. Kornakov and R. Kotte and A. Kugler and T. Kunz and A. Kurepin and A. Kurilkin and P. Kurilkin and V. Ladygin and R. Lalik and K. Lapidus and A. Lebedev and L. Lopes and M. Lorenz and T. Mahmoud and L. Maier and A. Mangiarotti and J. Markert and S. Maurus and V. Metag and J. Michel and D. M. Mihaylov and S. Morozov and C. Müntz and R. Münzer and L. Naumann and K. N. Nowakowski and M. Palka and Y. Parpottas and V. Pechenov and O. Pechenova and O. Petukhov and J. Pietraszko and W. Przygoda and S. Ramos and B. Ramstein and A. Reshetin and P. Rodriguez-Ramos and P. Rosier and A. Rost and A. Sadovsky and P. Salabura and T. Scheib and H. Schuldes and E. Schwab and F. Scozzi and F. Seck and P. Sellheim and I. Selyuzhenkov and J. Siebenson and L. Silva and Yu. G. Sobolev and S. Spataro and H. Ströbele and J. Stroth and P. Strzempek and C. Sturm and O. Svoboda and M. Szala and P. Tlusty and M. Traxler and H. Tsertos and E. Usenko and V. Wagner and C. Wendisch and M. G. Wiebusch and J. Wirth and Y. Zanevsky and P. Zumbruch and Y. Leifels},
journal= {arXiv preprint arXiv:1812.07304},
year = {2019}
}
Comments
8 pages, 10 figures