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Adamczewski-Musch, Jörn ; Arnold, Oliver Werner ; Behnke, Claudia ; Belounnas, Amel ; Belyaev, Alexei V. ; Berger-Chen, Jia-Chii ; Biernat, Jacek ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Bordalo, Paula ; Chernenko, Sergey P. ; Chlad, Lukáš ; Deveaux, Christina Anna ; Dreyer, Jörg ; Dybczak, Adrian ; Epple, Eliane ; Fabbietti, Laura ; Fateev, Oleg ; Filip, Peter ; Fonte, Paulo ; Franco, Celso ; Friese, Jürgen ; Fröhlich, Ingo ; Galatyuk, Tetyana ; Garzón, Juan A. ; Gernhäuser, Roman ; Golubeva, Marina ; Greifenhagen, Robert ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Heinz, Tobias ; Hennino, Thierry ; Hlaváč, Stanislav ; Höhne, Claudia ; Holzmann, Romain ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Kämpfer, Burkhard ; Karavicheva, Tatiana L. ; Kardan, Behruz ; Koenig, Ilse ; Koenig, Wolfgang ; Kolb, Burkhard W. ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kotte, Roland ; Kugler, Andrej ; Kunz, Tobias ; Kurepin, Alexander ; Kurilkin, Aleksey K. ; Kurilkin, Pavel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lapidus, Kirill ; Lebedev, Alexei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Mahmoud, Tariq ; Maier, Ludwig W. ; Mangiarotti, Alessio ; Markert, Jochen ; Maurus, Steffen ; Metag, Volker ; Michel, Jan ; Mihaylov, Dimitar ; Morozov, Sergey ; Müntz, Christian ; Münzer, Robert Helmut ; Naumann, Lothar ; Nowakowski, Krzysztof ; Palka, Marek ; Parpottas, Yannis ; Pechenov, Vladimir ; Pechenova, Olga ; Petukhov, Oleg ; Pietraszko, Jerzy ; Przygoda, Witold ; Ramos, Sérgio ; Ramstein, Béatrice ; Reshetin, Andrey ; Rodriguez Ramos, Pablo ; Rosier, Philippe ; Rost, Adrian ; Sadovsky, Alexander ; Salabura, Piotr ; Scheib, Timo ; Schuldes, Heidi ; Schwab, Erwin ; Scozzi, Federico ; Seck, Florian ; Sellheim, Patrick ; Selyuzhenkov, Ilya ; Siebenson, Johannes Stephan ; Silva, Luis ; Sobolev, Yuri G. ; Spataro, Stefano ; Spies, Simon ; Ströbele, Herbert ; Stroth, Joachim ; Strzempek, Paweł ; Sturm, Christian Thomas ; Svoboda, Ondřej ; Szala, Melanie ; Tlustý, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Usenko, Evgeny A. ; Wagner, Vladimir ; Wendisch, Christian ; Wiebusch, Michael ; Wirth, Joana ; Zanevsky, Yuri V. ; Zumbruch, Peter W. ; Leifels, Yvonne
We present first data on sub-threshold production of Ks0 mesons and Λ hyperons in Au+Au collisions at sNN=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 them can simultaneously describe these observables with reasonable χ2 values.
Boretzky, Konstanze ; Gašparić, Igor ; Heil, Michael ; Mayer, Jan ; Heinz, Andreas ; Caesar, Christoph ; Kresan, Dmytro ; Simon, Haik ; Törnqvist, Hans Toshihide ; Körper, Daniel ; Alkhazov, G. D. ; Atar, Leyla ; Aumann, Thomas ; Bemmerer, Daniel ; Bondarev, S. V. ; Bott, Lukas T. ; Chakraborty, Santosh ; Cherciu, Madalin I. ; Chulkov, Leonid V. ; Ciobanu, Mircea ; Datta, Ushasi ; De Filippo, Enrico ; Douma, Christiaan ; Dreyer, Jörn ; Elekes, Zoltán ; Enders, Joachim ; Galaviz Redondo, Daniel ; Geraci, Elena Irene ; Gnoffo, Brunilde ; Göbel, Kathrin ; Golovtsov, Victor L. ; González-Díaz, Diégo ; Gruzinsky, N. ; Heftrich, Tanja ; Heggen, Henning ; Hehner, Jörg ; Hensel, Thomas ; Hoemann, Elena ; Holl, Matthias ; Horvat, Andrea ; Horváth, Ákos ; Ickert, Günter ; Jelavić-Malenica, Deša ; Johansson, Håkan T. ; Jonson, Björn ; Kahlbow, Julian ; Kalantar-Nayestanaki, Nasser ; Kelić-Heil, Aleksandra ; Mathias, Kempe ; Koch, Karsten ; Kozlenko, Nikolai ; Krivshich, Anatoly G. ; Kurz, Nikolaus ; Kouznetsov, Viacheslav A. ; Langer, Christoph ; Leifels, Yvonne ; Lihtar, Ivana ; Löher, Bastian ; Machado, Jorge ; Martorana, Nunzia Simona ; Miki, Kenjiro ; Nilsson, Thomas ; Orischin, E. M. ; Pagano, Emanuele Vincenzo ; Pirrone, Sara ; Politi, Giuseppe ; Potlog, Petru-Mihai ; Rahaman, Anisur ; Reifarth, René ; Rigollet, Catherine ; Röder, Marko ; Rossi, Dominic M. ; Russotto, Paolo ; Savran, Deniz ; Scheit, Heiko ; Schindler, Fabia ; Stach, Daniel ; Stan, Emil ; Stomvall Gill, J. ; Teubig, Pamela ; Trimarchi, Marina ; Uvarov, Lev ; Volknandt, Meiko ; Volkov, S. ; Wagner, Andreas ; Wagner, Vladimír ; Wranne, Staffan ; Yakorev, Dmitry ; Zanetti, Lorenzo ; Zilges, Andreas ; Zuber, Kai
NeuLAND (New Large-Area Neutron Detector) is the next-generation neutron detector for the R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR (Facility for Antiproton and Ion Research). NeuLAND detects neutrons with energies from 100 to 1000 MeV, featuring a high detection efficiency, a high spatial and time resolution, and a large multi-neutron reconstruction efficiency. This is achieved by a highly granular design of organic scintillators: 3000 individual submodules with a size of 5 × 5 × 250 cm3 are arranged in 30 double planes with 100 submodules each, providing an active area of 250 × 250 cm2 and a total depth of 3 m. The spatial resolution due to the granularity together with a time resolution of 150 ps ensures high-resolution capabilities. In conjunction with calorimetric properties, a multi-neutron reconstruction efficiency of 50% to 70% for four-neutron events will be achieved, depending on both the emission scenario and the boundary conditions allowed for the reconstruction method. We present in this paper the final design of the detector as well as results from test measurements and simulations on which this design is based.
Abou Yassine, Rayane ; Adamczewski-Musch, Jörn ; Becker, Marten ; Bergmann, Philip ; Blanco, Alberto ; Blume, Christoph ; Chlad, Lukas ; Chudoba, Petr ; Ciepał, Izabela ; Cordts, Malte ; Dreyer, Jörn ; Esmail, Waleed Ahmed ; Firlej, Miroslaw ; Fiutowski, Tomasz ; Floersheimer, Henrik ; Fonte, Paulo ; Friese, Jürgen ; Fröhlich, Ingo ; Förtsch, Jörg ; Galatyuk, Tetyana ; Gniazdowski, Tomasz ; Greifenhagen, Robert ; Grunwald, Mateusz ; Grzonka, Dieter ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Heinz, Thorsten ; Höhne, Claudia ; Hojeij, Fatima ; Holzmann, Romain ; Huck, Holger ; Idzik, Marek ; Kämpfer, Burkhard ; Kampert, Karl-Heinz ; Kardan, Behruz ; Kedych, Vadym ; Koenig, Ilse ; Koenig, Wolfgang ; Kohls, Marvin ; Kołaś, Jędrzej ; Korcyl, Grzegorz ; Kornakov, Georgy ; Kornas, Frédéric Julian ; Kotte, Roland ; Krueger, Wilhelm ; Kugler, Andrej ; Kulessa, Pawel ; Lalik, Rafał Tomasz ; Lebedev, Semen ; Linev, Sergey ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Malige, Akshay ; Markert, Jochen ; Matulewicz, Tomasz ; Messchendorp, Johannes Gerhardus ; Metag, Volker ; Michel, Jan ; Molenda, Aleksandra ; Moron, Jakub ; Müntz, Christian ; Nabroth, Marvin ; Naumann, Lothar ; Orliński, Jan ; Otto, Jan-Hendrik ; Parpottas, Yannis ; Parschau, Mirco ; Pauly, Christian ; Pechenov, Vladimir ; Pechenova, Olga ; Perez Andrade, Gabriela ; Pfeifer, Dennis ; Piasecki, Krzysztof ; Pietraszko, Jerzy ; Povar, Tetiana ; Prozorov, Alexandr ; Przygoda, Witold ; Pysz, Krzysztof ; Ramstein, Béatrice ; Rathod, Narendra ; Ritman, James Lambrecht ; Rost, Adrian ; Rustamov, Anar ; Salabura, Piotr ; Saraiva, Joao ; Schadmand, Susan ; Schild, Niklas ; Schwab, Erwin ; Seck, Florian ; Selyuzhenkov, Ilya ; Singh, Udai ; Skorpil, Leon ; Smyrski, Jerzy ; Sobiella, Manfred ; Spataro, Stefano ; Spies, Simon ; Stefaniak, Maria ; Ströbele, Herbert ; Stroth, Joachim ; Sumara, Konrad ; Svoboda, Ondřej ; Swientek, Krzysztof ; Szala, Melanie ; Tlusty, Pavel ; Traxler, Michael ; Tsertos, Haralabos ; Wagner, Vladimir ; Wasiluk, Mateusz ; Weber, Adrian Amatus ; Wendisch, Christian ; Wintz, Peter ; Zbroszczyk, Hanna Paulina ; Zherebtsova, Elizaveta S. ; Zielinski, Marcin ; Zumbruch, Peter W.
In March 2019 the HADES experiment recorded 14 billion Ag+Ag collisions at √sNN = 2.55 GeV as a part of the FAIR phase-0 physics program. In this contribution, we present and investigate our capabilities to reconstruct and analyze weakly decaying strange hadrons and hypernuclei emerging from these collisions. The focus is put on measuring the mean lifetimes of these particles.
Salabura, Piotr ; Adamczewski-Musch, Jörn ; Arnoldi-Meadows, Benedict ; Belounnas, Amel ; Belyaev, Alexei V. ; Blanco, Alberto ; Blume, Christoph ; Böhmer, Michael ; Borisenko, S. ; Chlad, Lukáš ; Chudoba, Petr ; Ciepał, Izabela ; Dittert, Dominique ; Dreyer, Jörn ; Esmail, Waleed Ahmed Mohammed ; Dürr, Michael ; Fabbietti, Laura ; Fateev, Oleg ; Fonte, Paulo ; Friese, Jürgen ; Fröhlich, Ingo ; Förtsch, Jörg ; Galatyuk, Tetyana ; Gernhäuser, Roman ; Golosov, Oleg ; Golubeva, Marina ; Greifenhagen, Robert ; Guber, Fedor ; Gumberidze, Malgorzata ; Harabasz, Szymon ; Hensch, Roman ; Höhne, Claudia ; Holzmann, Romain ; Huck, Holger ; Ierusalimov, Alexander P. ; Ivashkin, Alexander ; Kämpfer, Burkhard ; Kampert, Karl-Heinz ; Kardan, Behruz ; Koenig, Ilse ; Koenig, Wolfgang ; Kornakov, Georgy ; Kornas, Frédéric Julian ; Kotte, Roland ; Kozela, Adam ; Kres, Ievgenii ; Kuboś, Joanna ; Kugler, Andrej ; Kulessa, Pawel ; Ladygin, Vladimir P. ; Lalik, Rafał Tomasz ; Lebedev, Alexei ; Lebedev, Semen ; Linev, Serguei ; Lopes, Luis Alberto Vieira ; Lorenz, Manuel ; Lykasov, Gennady ; Mahmoud, Tariq ; Malige, Akshay ; Markert, Jochen ; Matulewicz, Tomasz ; Maurus, Steffen ; Metag, Volker ; Michel, Jan ; Morozov, Sergey ; Müntz, Christian ; Naumann, Lothar ; Nowakowski, Krzysztof ; Otto, Jan-Hendrik ; Patel, Vivek ; Pauly, Christian ; Pechenov, Vladimir ; Pechenova, Olga ; Petukhov, Oleg ; Pfeifer, Dennis ; Piasecki, Krzysztof ; Pietraszko, Jerzy ; Prozorov, Alexandr ; Przygoda, Witold ; Pysz, Krzysztof ; Ramstein, Béatrice ; Rathod, Narendra ; Reshetin, Andrey ; Ritman, James Lambrecht ; Rodríguez Ramos, Pablo ; Rost, Adrian ; Salabura, Piotr ; Scozzi, Federico ; Seck, Florian ; Selyuzhenkov, Ilya ; Shabanov, I. ; Singh, Udai ; Smyrski, Jerzy ; Spies, Simon ; Ströbele, Herbert ; Stroth, Joachim ; Stumm, Julia ; Svoboda, Ondřej ; Szala, Melanie ; Tlustý, Pavel ; Traxler, Michael ; Ungethüm, Carina ; Vázquez Doce, Oton ; Wagner, Vladimir ; Weber, Adrian Amatus ; Wendisch, Christian ; Wiebusch, Michael ; Wintz, Peter ; Wirth, Joana ; Zhilin, Alexander ; Zumbruch, Peter W.
Radiative transition of an excited baryon to a nucleon with emission of a virtual massive photon converting to dielectron pair (Dalitz decays) provides important information about baryon-photon coupling at low q2 in timelike region. A prominent enhancement in the respective electromagnetic transition Form Factors (etFF) at q2 near vector mesons ρ/ω poles has been predicted by various calculations reflecting strong baryon-vector meson couplings. The understanding of these couplings is also of primary importance for the interpretation of the emissivity of QCD matter studied in heavy ion collisions via dilepton emission. Dedicated measurements of baryon Dalitz decays in proton-proton and pion-proton scattering with HADES detector at GSI/FAIR are presented and discussed. The relevance of these studies for the interpretation of results obtained from heavy ion reactions is elucidated on the example of the HADES results.
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