EPJ Web of Conferences (Jan 2019)

Time-Like Baryon Transitions studies with HADES

  • Ramstein B.,
  • Adamczewski-Musch J.,
  • Arnold O.,
  • Arnoldi-Meadows B.,
  • Belounnas A.,
  • Belyaev A.,
  • Biernat J.,
  • Blanco A.,
  • Blume C.,
  • Böhmer M.,
  • Bordalo P.,
  • Chlad L.,
  • Chudoba P.,
  • Ciepał I.,
  • Deveaux C.,
  • Dittert D.,
  • Dreyer J.,
  • Fabbietti L.,
  • Fateev O.,
  • Fonte P.,
  • Franco C.,
  • Friese J.,
  • Fröhlich I.,
  • Galatyuk T.,
  • Garzón J. A.,
  • Gernhäuser R.,
  • Gillitzer A.,
  • Golubeva M.,
  • Greifenhagen R.,
  • Guber F.,
  • Gumberidze M.,
  • Harabasz S.,
  • Heinz T.,
  • Hennino T.,
  • Himmelreich M.,
  • Höhne C.,
  • Holzmann R.,
  • Ierusalimov A.,
  • Ivanov V.,
  • Ivashkin A.,
  • Kämpfer B.,
  • Kajetanowicz M.,
  • Kampert K-H.,
  • Karavicheva T.,
  • Kardan B.,
  • Khomyakov V.,
  • Koenig I.,
  • Koenig W.,
  • Korcyl G.,
  • Kornakov G.,
  • Kornas F.,
  • Kotte R.,
  • Kozela A.,
  • Kuboś J.,
  • Kugler A.,
  • Kunz T.,
  • Kurepin A.,
  • Kurilkin P.,
  • Kushpil V,
  • Ladygin V.,
  • Lalik R.,
  • Lebedev A.,
  • Linev S.,
  • Liu M.,
  • Lopes L.,
  • Lorenz M.,
  • Lykasov G.,
  • Mahmoud T.,
  • Malakhov A.,
  • Markert J.,
  • Maurus S.,
  • Metag V.,
  • Michel J.,
  • Mihaylov D.M.,
  • Mikhaylov V.,
  • Morozov S.,
  • Müntz C.,
  • Naumann L.,
  • Nowakowski K.,
  • Parpottas Y.,
  • Patel V.,
  • Pauly C.,
  • Pechenov V.,
  • Pechenova O.,
  • Pereira A.,
  • Petousis V.,
  • Petukhov O.,
  • Pfeifer D.,
  • Pietraszko J.,
  • Przygoda W.,
  • Pysz K.,
  • Ramos S.,
  • Reshetin A.,
  • Ritman L.,
  • Rodriguez-Ramos P.,
  • Rost A.,
  • Sadovsky A.,
  • Salabura P.,
  • Scheib T.,
  • Schuldes H.,
  • Schwab E.,
  • Scozzi F.,
  • Seck F.,
  • Sellheim P.,
  • Selyuzhenkov I.,
  • Silva L.,
  • Smyrski J.,
  • Sobiella M.,
  • Spataro S.,
  • Spies S.,
  • Ströbele H.,
  • Stroth J.,
  • Strzempek P.,
  • Svoboda O.,
  • Szala M.,
  • Taranenko A.,
  • Tlusty P.,
  • Traxler M.,
  • Troyan A.,
  • Tsertos H.,
  • Wagner V.,
  • Wendisch C.,
  • Wiebusch M.G.,
  • Wintz P.,
  • Wirth J.,
  • Włoch B.,
  • Zhilin A.,
  • Zinchenko A.,
  • Zumbruch P.,
  • Zuschke M.

DOI
https://doi.org/10.1051/epjconf/201919901008
Journal volume & issue
Vol. 199
p. 01008

Abstract

Read online

The HADES collaboration uses the e+e− production as a probe of the resonance matter produced in collisions at incident energies of 1-3.5 GeV/nucleon at GSI. Elementary reactions provide useful references for these studies and give information on resonance Dalitz decays (R→Ne+e−). Such processes are sensitive to the structure of time-like electromagnetic baryon transitions in a kinematic range where (off-shell) vector mesons play a crucial role. Results obtained in proton-proton reactions and in a commissioning pion-beam experiment are reported and prospects for future pion beam experiments and for first hyperon Dalitz decay measurements are described. The connection with the investigations of medium effects to be continued with HADES in the next years at SIS18 and SIS100 is also discussed.