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Wyszukujesz frazę "Kolas, J." wg kryterium: Autor


Wyświetlanie 1-6 z 6
Tytuł:
Spheroidal expansion and freeze-out geometry of heavy-ion collisions in the few-GeV energy regime
Autorzy:
Gumberidze, M.
Stroth, J.
Zbroszczyk, H.
Galatyuk, T.
Kołaś, J.
Ryblewski, R.
Kurach, M.
Harabasz, Szymon
Florkowski, Wojciech
Salabura, Piotr
Opis:
The dissatisfactory results provided by various transport models to HADES Au+Au collisions have prompted a novel approach to the description of particle spectra. The use of statistical-hadronisation-based models is proposed. In addition, a unique freeze-out hypersurface parametrisation is emplyed, which, with few kinematic parameters, is able to describe spectra of most abundant particles produced in the Au+Au $\sqrt{^{s}NN}$ = 2.4 GeV most central collisions. A femtoscopic correlation study of identical pions is showcased with moderate reproduction.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Investigation of the $\Sigma ^{0}$ production mechanism in p(3.5 GeV)+p collisions
Autorzy:
Krueger, W.
Zumbruch, P.
Zherebtsova, E.
Blanco, A.
Garzón, J. A.
Spies, S.
Galatyuk, T.
Kohls, M.
Przygoda, Witold
Korcyl, Grzegorz
Kunz, T.
Gumberidze, M.
Arnold, O.
Parpottas, Y.
Fröhlich, I.
Friese, J.
Kämpfer, B.
Pietraszko, J.
Dreyer, J.
Schild, N.
Svoboda, O.
Nowakowski, Krzysztof
Fabbietti, L.
Orliński, J.
Metag, V.
Hojeij, F.
Seck, F.
Idzik, M.
Michel, J.
Rathod, N.
Fonte, P.
Weber, A. A.
Chudoba, P.
Wendisch, C.
Markert, J.
Schwab, E.
Tlusty, P.
Molenda, A.
Koenig, I.
Höhne, C.
Kugler, A.
Pechenova, O.
Zieliński, Marcin
Kornakov, G.
Esmail, W.
Wagner, V.
Prozorov, A.
Koenig, W.
Lalik, Rafał
Kardan, B.
Nabroth, M.
Böhmer, M.
Stefaniak, M.
Huck, H.
Pechenov, V.
Kedych, V.
Malige, Akshay
Müntz, C.
Blume, C.
Carolino, N.
Salabura, Piotr
Grunwald, M.
Holzmann, R.
Bergmann, P.
Stroth, J.
Lopes, L.
Naumann, L.
Ritman, J.
Rustamov, A.
Sturm, C.
Tsertos, H.
Linz, F.
Piasecki, K.
Singh, Udai
Otto, J. -H.
Traxler, M.
Zbroszczyk, H. P.
Kotte, R.
Becker, M.
Ciepał, Izabela
Szala, M.
Chlad, L.
Ströbele, H.
Kolas, J.
Sumara, Konrad
Ramstein, B.
Lorenz, M.
Harabasz, S.
Yassine, R. Abou
Parschau, M.
Rost, A.
Opis:
The production of $\Sigma^{0}$ hyperons in proton proton collisions at a beam kinetic energy of 3.5 GeV impinging on a liquid hydrogen target was investigated using data collected with the HADES setup. The total production cross section is found to be $\sigma(pK^{+} \Sigma^{0})$ = 17.7 $\pm$ 1.7(stat) $\pm$ 1.6(syst) μb. Differential cross section distributions of the exclusive channel $pp \to pK^{+} \Sigma^{0}$ were analyzed in the center-of-mass, Gottfried–Jackson and helicity reference frames for the first time at the excess energy of 556 MeV. The data support the interplay between pion and kaon exchange mechanisms and clearly demonstrate the contribution of interfering nucleon resonances decaying to $K^{+} \Sigma^{0}$. The Bonn–Gatchina partial wave analysis was employed to analyse the data. Due to the limited statistics, it was not possible to obtain an unambiguous determination of the relative contribution of intermediate nucleon resonances to the final state. However nucleon resonances with masses around 1.710 GeV/c$^{2}$ (N* (1710)) and 1.900 GeV/c$^{2}$ N* (1900) or $\Delta$* (1900)) are preferred by the fit.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Measurement of global polarization of $\Lambda$ hyperons in few-GeV heavy-ion collisions
Autorzy:
Lorenz, M.
Pechenova, O.
Galatyuk, T.
Markert, J.
Parschau, M.
Kotte, R.
Prozorov, A.
Asal, C.
Krueger, W.
Belounnas, A.
Rodriguez-Ramos, P.
Kedych, V.
Idzik, M.
Linev, S.
Adamczewski-Musch, J.
Müntz, C.
Chlad, L.
Kämpfer, B.
Michel, J.
Piasecki, K.
Spies, S.
Saraiva, J.
Traxler, M.
Schwab, E.
Blanco, A.
Przygoda, Witold
Selyuzhenkov, I.
Förtsch, J.
Zbroszczyk, H.P.
Lalik, Rafał
Nowakowski, Krzysztof
Pietraszko, J.
Grunwald, M.
Naumann, L.
Blume, C.
Povar, T.
Kardan, B.
Pechenov, V.
Otto, J.-H.
Chudoba, P.
Ciepał, Izabela
Rustamov, A.
Malige, Akshay
Gniazdowski, T.
Fröhlich, I.
Hojeij, F.
Koenig, I.
Stroth, J.
Sumara, Konrad
Friese, J.
Cordts, M.
Stefaniak, M.S.
Salabura, Piotr
Lopes, L.
Holzmann, R.
Ritman, J.
Ströbele, H.
Kampert, K-H.
Pauly, C.
Höhne, C.
Lebedev, S.
Floersheimer, H.
Becker, M.
Pysz, K.
Fonte, P.
Kres, I.
Smyrski, Jerzy
Abou Yassine, R.
Schild, N.
Heinz, T.
Linz, F.
Wirth, J.
Skorpil, L.
Esmail, W.A.
Kugler, A.
Scozzi, F.
Kornakov, G.
Weber, A.A.
Rost, A.
Pfeifer, D.
Wasiluk, M.
Singh, Udai
Koenig, W.
Wagner, V.
Kolas, J.
Metag, V.
Wendisch, C.
Zieliński, Marcin
Nabroth, M.
Ramstein, B.
Seck, F.
Fabbietti, L.
Tlusty, P.
Huck, H.
Greifenhagen, R.
Harabasz, S.
Svoboda, O.
Zherebtsova, E.
Zumbruch, P.
Maurus, S.
Molenda, A.
Matulewicz, T.
Rathod, Narendra
Orliński, J.
Gumberidze, M.
Kohls, M.
Szala, M.
Dreyer, J.
Opis:
The global polarization of Λ hyperons along the total orbital angular momentum of a relativistic heavy-ion collision is presented based on the high statistics data samples collected in Au+Au collisions at $\sqrt{^{s}NN}$ = 2.4 GeV and Ag+Ag at 2.55 GeV with the High-Acceptance Di-Electron Spectrometer (HADES) at GSI, Darmstadt. This is the first measurement below the strangeness production threshold in nucleon-nucleon collisions. Results are reported as a function of the collision centrality as well as a function of the hyperon's transverse momentum (p_{T}) and rapidity (y_{CM}) for the range of centrality 0–40%. We observe a strong centrality dependence of the polarization with an increasing signal towards peripheral collisions. For mid-central (20 – 40%) collisions the polarization magnitudes are $\left< P_{\Lambda}\right>$ (%) = 6.8 $\pm$ 1.3 (stat.) $\pm$ 2.1 (syst.) for Au+Au and $\left< P_{\Lambda}\right>$ (%) = 6.2 $\pm$ 0.4 (stat.) $\pm$ 0.6 (syst.) for Ag+Ag, which are the largest values observed so far. This observation thus provides a continuation of the increasing trend previously observed by STAR and contrasts expectations from recent theoretical calculations predicting a maximum in the region of collision energies about 3 GeV. The observed polarization is of a similar magnitude as predicted by 3D-fluid-dynamics and the UrQMD plus thermal vorticity model and significantly above results from the AMPT model.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Inclusive $e^{+}e^{-}$ production in collisions of pions with protons and nuclei in the second resonance region of baryons
Autorzy:
Lorenz, M.
Schmidt-Sommerfeld, K.
Pechenova, O.
Galatyuk, T.
Silva, L.
Markert, J.
Parschau, M.
Kotte, R.
Zbroszczyk, H. P.
Nowakowski, Kamil
Prozorov, A.
Rodriguez-Ramos, P.
Krueger, W.
Kedych, V.
Böhmer, M.
Idzik, M.
Linev, S.
Adamczewski-Musch, J.
Müntz, C.
Siebenson, J.
Chlad, L.
Kämpfer, B.
Michel, J.
Piasecki, K.
Spies, S.
Sturm, C.
Traxler, M.
Schwab, E.
Blanco, A.
Garzón, J. A.
Przygoda, Witold
Stefaniak, M.
Fortsch, J.
Weber, A. A.
Wiebusch, M. G.
Franco, C.
Lalik, Rafał
Pietraszko, J.
Grunwald, M.
Naumann, L.
Blume, C.
Povar, T.
Kardan, B.
Pechenov, V.
Chudoba, P.
Otto, J.-H.
Rustamov, A.
Malige, Akshay
Fröhlich, I.
Rathod, N.
Hojeij, F.
Koenig, I.
Stroth, J.
Sumara, Konrad
Friese, J.
Münzer, R.
Udrea, I. C.
Salabura, Piotr
Gernhäuser, R.
Schuldes, H.
Arnold, O.
Kolb, B. W.
Maier, L.
Lopes, L.
Holzmann, R.
Spataro, S.
Kunz, T.
Ströbele, H.
Kampert, K-H.
Pauly, C.
Sellheim, P.
Korcyl, Grzegorz
Vazquez-Doce, O.
Höhne, C.
Becker, M.
Fonte, P.
Pysz, K.
Smyrski, Jerzy
Abou Yassine, R.
Mahmoud, T.
Schild, N.
Heinz, T.
Linz, F.
Wirth, J.
Epple, E.
Kugler, A.
Scozzi, F.
Kornakov, G.
Rost, A.
Parpottas, Y.
Prościński, Krzysztof
Deveaux, C.
Singh, Udai
Koenig, W.
Wagner, V.
Hennino, T.
Kolas, J.
Deb, S.
Tsertos, H.
Metag, V.
Scheib, T.
Wendisch, C.
Zieliński, Marcin
Dittert, D.
Nabroth, M.
Lapidus, K.
Ramstein, B.
Mihaylov, D. M.
Seck, F.
Fabbietti, L.
Tlusty, P.
Władyszewska, Anna
Atomssa, E. T.
Behnke, C.
Greifenhagen, R.
Harabasz, S.
Berger-Chen, J. C.
Svoboda, O.
Zherebtsova, E.
Zumbruch, P.
Maurus, S.
Mikhaylov, V.
Molenda, A.
Orliński, J.
Gumberidze, M.
Kohls, M.
Szala, M.
Ciepał, I.
Dreyer, J.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
HADES and the QCD phase diagram
Autorzy:
Krueger, W.
Lebedev, A.
Petukhov, O.
Zumbruch, P.
Zherebtsova, E.
Reznikov, S. G.
Spataro, S.
Blanco, A.
Spies, S.
Galatyuk, T.
Povar, T.
Kohls, M.
Przygoda, Witold
Korcyl, Grzegorz
Pysz, K.
Gumberidze, M.
Asal, C.
Kozela, A.
Kulessa, P.
Parpottas, Y.
Fröhlich, I.
Friese, J.
Kämpfer, B.
Pietraszko, J.
Dreyer, J.
Schild, N.
Strikhanov, M.
Svoboda, O.
Kornas, F.
Chudob, P.
Metag, V.
Matulewicz, T.
Hojeij, F.
Seck, F.
Golubeva, M.
Michel, J.
Sobiella, M.
Otto, J.-H.
Fonte, P.
Wendisch, C.
Kuboś, J.
Heinz, T.
Markert, J.
Schwab, E.
Smyrski, Jerzy
Szewczyk, J.
Ladygin, V. P.
Tlusty, P.
Ivashkin, A. P.
Koenig, I.
Heybeck, B.
Ierusalimov, A.
Kugler, A.
Pechenova, O.
Zieliński, Marcin
Kornakov, G.
Wagner, V.
Prozorov, A.
Koenig, W.
Lalik, Rafał
Golosov, O.
Kardan, B.
Zbroszczyk, H.P.
Zinchenko, A.
Włoch, B.
Lykasov, G.
Huck, H.
Pechenov, V.
Fateev, O.
Kedych, V.
Malige, Akshay
Müntz, C.
Blume, C.
Grunwald, M.
Salabura, Piotr
Guber, F.
Saraiva, J.
Weber, A.A.
Greifenhagen, R.
Rodriguez-Ramos, P.
Holzmann, R.
Stroth, J.
Harabasz, Szymon
Taranenko, A.
Förtsch, J.
Esmail, W.A.
Lopes, L.
Naumann, L.
Ritman, J.
Wintz, P.
Strobele, H.
Rustamov, A.
Belyaev, A.
Pfeifer, D.
Reshetin, A.
Shabanov, A.
Perez Andrade, G.
Tsertos, H.
Piasecki, K.
Singh, Udai
Traxler, M.
Adamczewski-Musch, J.
Kampert, K-H.
Kotte, R.
Ciepał, Izabela
Karpushkin, M
Szala, M.
Chlad, L.
Gniazdowski, T
Mamaev, M.V.
Kolas, J.
Sumara, Konrad
Ramstein, B.
Lorenz, M.
Selyuzhenkov, I.
Pauly, C.
Lebedev, S.
Dittert, D.
Hohne, C.
Morozov, S. M.
Grzonka, D.
Khomyakov, V.
Rathod, Narendra
Zhilin, A.
Rost, A.
Wasiluk, M.
Opis:
We discuss new experimental results on the mechanisms of light nuclei production, fluctuationsof conserved charges and the emissivity of matter, studied with HADES at SIS18. The multi-differential representations of hadron and dilepton spectra, collective effects and particle correla-tions are confronted with hitherto model calculations.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Inne
Tytuł:
Hadron production and propagation in pion-induced reactions on nuclei
Autorzy:
Kugler, A.
Tlusty, P.
Siebenson, J.
Kolb, B. W.
Zbroszczyk, H. P.
Friese, J.
Gernhäuser, R.
Kedych, V.
Berger-chen, J. C.
Kohls, M.
Kampert, K.-H.
Zherebtsova, E.
Gumberidze, M.
Singh, Udai
Holzmann, R.
Rost, A.
Zumbruch, P.
Hojeij, F.
Pietraszko, J.
Seck, F.
Molenda, A.
Lopes, L.
Lorenz, M.
Vazquez-Doce, O.
Michel, J.
Pysz, K.
Tsertos, H.
Schild, N.
Mihaylov, D. M.
Lalik, Rafał
Silva, L.
Krueger, W.
Ramstein, B.
Spies, S.
Svoboda, O.
Scozzi, F
Linz, F.
Ciepał, Izabela
Deveaux, C.
Traxler, M.
Kotte, R.
Maurus, S.
Piscicchia, K.
Chudoba, P.
Sturm, C.
Koenig, I.
Scordo, A.
Markert, J.
Kornakov, G.
Nabroth, M.
Epple, E.
Scheib, T.
Władyszewska, Anna
Heinz, T.
Parpottas, Y.
Smyrski, Jerzy
Prozorov, A.
Rodriguez-Ramos, P.
Behnke, C.
Rathod, N.
Pauly, C.
Becker, M.
Ströbele, H.
Hennino, T.
Adamczewski-Musch, J.
Idzik, M.
Piasecki, K.
Atomssa, E. T.
Kardan, B.
Korcyl, Grzegorz
Höhne, C.
Kolas, J.
Pechenova, O.
Schuldes, H.
Deb, S.
Szala, M.
Parschau, M.
Grunwald, M.
Sumara, Konrad
Wendisch, C.
Fonte, P.
Galatyuk, T.
Förtsch, J.
Orliński, J.
Stefaniak, M.
Mikhaylov, V.
Schwab, E.
Wiebusch, M. G.
Zieliński, Marcin
Franco, C.
Prościński, Krzysztof
Kämpfer, B.
Harabasz, S.
Blanco, A.
Naumann, L.
Mahmoud, T.
Weber, A. A.
Curceanu, C.
Spataro, S.
Maier, L.
Otto, J. -H.
Schmidt-Sommerfeld, K.
Blume, C.
Chlad, L.
Garzón, J. A.
Stroth, J.
Rustamov, A.
Koenig, W.
Müntz, C.
Wagner, V.
Pechenov, V.
Wirth, J.
Nowakowski, Krzysztof
Povar, T.
Metag, V.
Münzer, R.
Udrea, I. C.
Dreyer, J.
Greifenhagen, R.
Böhmer, M.
Malige, Akshay
Arnold, O.
Dittert, D.
Lapidus, K.
Salabura, Piotr
Sellheim, P.
Yassine, R. Abou
Fröhlich, I.
Fabbietti, L.
Linev, S.
Kunz, T.
Przygoda, Witold
Opis:
Hadron production ($\pi^{\pm}$, proton, $\Lambda, K^{0}_{S}, K^{\pm}$) in $\pi^{-}$ + C and $\pi^{-}$ + W collisions is investigated at an incident pion beam momentum of 1.7 GeV/c. This comprehensive set of data measured with HADES at SIS18/GSI significantly extends the existing world data on hadron production in pion induced reactions and provides a new reference for models that are commonly used for the interpretation of heavy-ion collisions. The measured inclusive differential production cross-sections are compared with state-of-the-art transport model (GiBUU, SMASH) calculations. The (semi-) exclusive channel $\pi^{-}$ + A $\to \Lambda$ + $K^{0}_{S}$ + X, in which the kinematics of the strange hadrons are correlated, is also investigated and compared to a model calculation. Agreement and remaining tensions between data and the current version of the considered transport models are discussed.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
    Wyświetlanie 1-6 z 6

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