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Wyświetlanie 1-10 z 67
Tytuł:
FARCOS detector in the CHIFAR experiment
Autorzy:
Fichera, F.
Risitano, F.
Lanzalone, G.
Zagami, C.
Acosta, L.
Siwek-Wilczynska, K.
Guazzoni, C.
Płaneta, Roman
Papa, M.
Piscopo, M.
Maiolino, C.
Skwira-Chalot, I.
Trimarchi, M.
Cap, T.
Politi, G.
Cardella, G.
Pagano, E. V.
Filippo, E. de
Pagano, A.
Gnoffo, B.
Piasecki, K.
Matulewicz, T.
Martorana, N. S.
Pirrone, S.
Russotto, P.
Geraci, E.
Opis:
The CHIFAR experiment, carried out at Laboratori Nazionali del Sud-INFN (INFN-LNS), was proposed to investigate the emission probability of Intermediate Mass Fragments (IMFs) in non-central Heavy Ion (HI) collisions, focusing also on the role of the Isospin degree of freedom of the colliding nuclei. The results of the energy calibration, resolution and particle identification phase of FARCOS correlator used in the CHIFAR experiment are reported.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
The pixelation technique applied to FARCOS correlator in the CHIFAR experiment
Autorzy:
Fichera, F.
Risitano, F.
Lanzalone, G.
Zagami, C.
Acosta, L.
Santagati, G.
Siwek-Wilczynska, K.
Guazzoni, C.
Płaneta, Roman
Papa, M.
Piscopo, M.
Maiolino, C.
Skwira-Chalot, I.
Trimarchi, M.
Cap, T.
Politi, G.
Cardella, G.
Pagano, E. V.
Saccà, G.
Pagano, A.
Gnoffo, B.
Piasecki, K.
Matulewicz, T.
Martorana, N. S.
De Filippo, E.
Pirrone, S.
Russotto, P.
Geraci, E.
Rizzo, F.
Opis:
The CHIFAR experiment, carried out at Laboratori Nazionali del Sud-INFN (INFN-LNS), was proposed to investigate the emission probability of Intermediate Mass Fragments (IMFs) in non-central Heavy Ion (HI) collisions. The aim was the study of the features of the Equation of State of the nuclear matter, focusing also on the role of the isospin degree of freedom of the colliding nuclei. The CHIMERA Collaboration has investigated at the incident beam energy of 20 AMeV some nuclear reactions including: $^{124}$Sn + $^{64}$Ni, $^{112}$Sn + $^{58}$Ni and $^{124}$Xe + $^{64}$Zn. The experimental setup was equipped with ten telescopes of the FARCOS (Femtoscope ARray for COrrelation and Spectroscopy) correlator in its final configuration, coupled with the 4$\pi$ CHIMERA multi-detector allowing the study of correlations among IMFs and light charged particles produced in a nuclear reaction. The results on the energy calibration, on the energy resolution and on the particle identification phase of the FARCOS correlator used in the CHIFAR experiment are reported. The so-called "pixelation technique" is the last step of the analysis explained here.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Latest results of data analysis related to FARCOS correlator in the CHIFAR experiment
Autorzy:
Santagati, G.
De Filippo, E.
Piasecki, K.
Lanzalone, G.
Martorana, N. S.
Piscopo, M.
Skwira-Chalot, I.
Trimarchi, M.
Siwek-Wilczynska, K.
Risitano, F.
Pagano, A.
Guazzoni, C.
Pirrone, S.
Rizzo, F.
Geraci, E.
Płaneta, Roman
Politi, G.
Acosta, L.
Cap, T.
Russotto, P.
Fichera, F.
Gnoffo, B.
Maiolino, C.
Pagano, E. V.
Cardella, G.
Papa, M.
Zagami, C.
Saccà, G.
Matulewicz, T.
Opis:
The CHIFAR experiment, carried out at Laboratori Nazionali del Sud-INFN, aims to study the reaction mechanisms and Intermediate Mass Fragments (IMFs) emission probability in non-central Heavy-Ion collisions. These phenomena are linked to the features of the Equation of State of the nuclear matter, and shine light also on the role of the isospin degree of freedom of the colliding nuclei. In the CHIFAR experiment, nuclear reactions at incident beam energy of 20 AMeV were investigated using different combinations of beams: $^{124}$Sn, $^{112}$Sn and $^{124}$Xe, and targets: $^{64}$Ni, $^{58}$Ni and $^{64}$Zn, in order to study combinations of neutron-rich and neutron-poor systems. The experimental setup was equipped with ten telescopes of the FARCOS correlator, coupled with the 4π CHIMERA multi-detector. This coupling allowed the study of the correlations between IMFs and light charged particles emitted in a nuclear reaction. The results on the energy calibration, on the energy resolution and on the identification of the detected particles by FARCOS correlator used in the CHIFAR experiment are explained. Some preliminary results regarding the physics cases studied in the experiment are also reported.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Proton, deuteron and triton flow measurements in Au+Au collisions at $\sqrt{s_{NN}}$ = 2.4 GeV
Autorzy:
Lorenz, M.
Pechenova, O.
Galatyuk, T.
Silva, L.
Markert, J.
Kotte, R.
Rodriguez-Ramos, P.
Belounnas, A.
Böhmer, M.
Mangiarotti, A.
Adamczewski-Musch, J.
Müntz, C.
Siebenson, J.
Chlad, L.
Kämpfer, B.
Michel, J.
Piasecki, K.
Spies, S.
Sturm, C.
Harabasz, Szymon
Traxler, M.
Schwab, E.
Blanco, A.
Garzón, J. A.
Przygoda, Witold
Selyuzhenkov, I.
Wiebusch, M. G.
Kornas, F.
Franco, C.
Lalik, Rafał
Nowakowski, Krzysztof
Pietraszko, J.
Naumann, L.
Blume, C.
Kardan, B.
Pechenov, V.
Ciepał, Izabela
Wójcik, D.
Rustamov, A.
Malige, Akshay
Bordalo, P.
Fröhlich, I.
Koenig, I.
Stroth, J.
Friese, J.
Münzer, R.
Salabura, Piotr
Gernhäuser, R.
Ramos, S.
Schuldes, H.
Arnold, O.
Kolb, B. W.
Hlavac, S.
Maier, L.
Lopes, L.
Holzmann, R.
Spataro, S.
Kunz, T.
Ströbele, H.
Sellheim, P.
Korcyl, Grzegorz
Höhne, C.
Fonte, P.
Pysz, K.
Smyrski, Jerzy
Mahmoud, T.
Heinz, T.
Wirth, J.
Epple, E.
Kugler, A.
Scozzi, F.
Filip, P.
Kornakov, G.
Rost, A.
Parpottas, Y.
Deveaux, C.
Singh, Udai
Koenig, W.
Wagner, V.
Hennino, T.
Tsertos, H.
Metag, V.
Scheib, T.
Wendisch, C.
Lapidus, K.
Ramstein, B.
Mihaylov, D. M.
Seck, F.
Fabbietti, L.
Sobolev, Yu. G.
Tlusty, P.
Behnke, C.
Greifenhagen, R.
Berger-Chen, J. C.
Rosier, P.
Svoboda, O.
Zumbruch, P.
Maurus, S.
Matulewicz, T.
Rathod, Narendra
Gumberidze, M.
Kohls, M.
Szala, M.
Dreyer, J.
Opis:
High-precision measurements of flow coefficients v$_{n}$ (n = 1 - 4) for protons, deuterons and tritons relative to the first-order spectator plane have been performed in Au+Au collisions at $\sqrt{s_{NN}}$ = 2.4 GeV with the High-Acceptance Di-Electron Spectrometer (HADES) at the SIS18/GSI. Flow coefficients are studied as a function of transverse momentum p$_{t}$ and rapidity y$_{cm}$ over a large region of phase-space and for several classes of collision centrality. A clear mass hierarchy, as expected by relativistic hydrodynamics, is found for the slope of v$_{1}$, dv$_{1}$ / dy' |$_{y'=0}$ where y' is the scaled rapidity, and for v$_{2}$ at mid-rapidity. Scaling with the number of nucleons is observed for the p$_{t}$ dependence of v$_{2}$ and v$_{4}$ at mid-rapidity, which is indicative for nuclear coalescence as the main process responsible for light nuclei formation. v$_{2}$ is found to scale with the initial eccentricity $\left< \epsilon_{2} \right>$, while v$_{4}$ scales with $\left< \epsilon_{2} \right>^{2}$ and $\left< \epsilon_{4} \right>$. The multi-differential high-precision data on v$_{1}$, v$_{2}$, v$_{3}$, and v$_{4}$ provides important constraints on the equation-of-state of compressed baryonic matter.
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:
Identical pion intensity interferometry in central Au + Au collisions at 1.23A GeV
Autorzy:
Chernenko, S.
Pechenova, O.
Galatyuk, T.
Silva, L.
Markert, J.
Kotte, R.
Golubeva, M.
Rodriguez-Ramos, P.
Belounnas, A.
Böhmer, M.
Mangiarotti, A.
Adamczewski-Musch, J.
Müntz, C.
Siebenson, J.
Chlad, L.
Kämpfer, B.
Michel, J.
Piasecki, K.
Spies, S.
Sturm, C.
Harabasz, Szymon
Traxler, M.
Schwab, E.
Ivashkin, A.
Blanco, A.
Garzón, J. A.
Przygoda, Witold
Selyuzhenkov, I.
Lebedev, A.
Ladygin, V.
Wiebusch, M. G.
Sadovsky, A.
Franco, C.
Lalik, Rafał
Biernat, Jacek
Nowakowski, Krzysztof
Pałka, Marek
Pietraszko, J.
Petukhov, O.
Naumann, L.
Blume, C.
Kardan, B.
Ierusalimov, A.
Pechenov, V.
Wójcik, D.
Bordalo, P.
Fröhlich, I.
Koenig, I.
Stroth, J.
Friese, J.
Münzer, R.
Reshetin, A.
Salabura, Piotr
Gernhäuser, R.
Ramos, S.
Schuldes, H.
Kurilkin, P.
Arnold, O.
Kolb, B. W.
Hlavac, S.
Maier, L.
Lopes, L.
Holzmann, R.
Spataro, S.
Kunz, T.
Ströbele, H.
Guber, F.
Sellheim, P.
Korcyl, Grzegorz
Höhne, C.
Fonte, P.
Mahmoud, T.
Heinz, T.
Wirth, J.
Epple, E.
Kugler, A.
Scozzi, F.
Filip, P.
Kornakov, G.
Rost, A.
Usenko, E.
Kurilkin, A.
Parpottas, Y.
Kurepin, A.
Dybczak, Adrian
Deveaux, C.
Koenig, W.
Wagner, V.
Sobolew, Yu. G.
Hennino, T.
Karavicheva, T.
Lorenz, Maria
Fateev, O.
Tsertos, H.
Metag, V.
Scheib, T.
Wendisch, C.
Lapidus, K.
Ramstein, B.
Mihaylov, D. M.
Seck, F.
Fabbietti, L.
Tlusty, P.
Behnke, C.
Greifenhagen, R.
Strzempek, Paweł
Berger-Chen, J. C.
Rosier, P.
Svoboda, O.
Zumbruch, P.
Belyaev, A.
Maurus, S.
Matulewicz, T.
Morozov, S.
Zanevsky, Y.
Gumberidze, M.
Szala, M.
Dreyer, J.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Identical pion intensity interferometry at $\sqrt{^{s}NN}=2.4$ GeV
Autorzy:
Lebedev, A.
Pałka, Marek
Petukhov, O.
Zumbruch, P.
Belounnas, A.
Spataro, S.
Blanco, A.
Garzón, J. A.
Spies, S.
Galatyuk, T.
Lapidus, K.
Przygoda, Witold
Korcyl, Grzegorz
Kunz, T.
Maier, L.
Gumberidze, M.
Arnold, O.
Morozov, S.
Parpottas, Y.
Siebenson, J.
Franco, C.
Fröhlich, I.
Friese, J.
Chernenko, S.
Kämpfer, B.
Pietraszko, J.
Dreyer, J.
Mihaylov, D. M.
Svoboda, O.
Kornas, F.
Nowakowski, Krzysztof
Fabbietti, L.
Matulewicz, T.
Metag, V.
Dybczak, Adrian
Biernat, Jacek
Schuldes, H.
Strzempek, Paweł
Kolb, B. W.
Seck, F.
Golubeva, M.
Michel, J.
Scheib, T.
Fonte, P.
Scozzi, F.
Wendisch, C.
Sobolev, Yu. G.
Heinz, T.
Markert, J.
Schwab, E.
Tlusty, P.
Koenig, I.
Höhne, C.
Kurilkin, A.
Ierusalimov, A.
Kugler, A.
Pechenova, O.
Mangiarotti, A.
Kornakov, G.
Hennino, T.
Wagner, V.
Usenko, E.
Koenig, W.
Lalik, Rafał
Behnke, C.
Ladygin, V.
Filip, P.
Kardan, B.
Ramos, S.
Mahmoud, T.
Böhmer, M.
Wirth, J.
Pechenov, V.
Silva, L.
Fateev, O.
Sellheim, P.
Maurus, S.
Müntz, C.
Blume, C.
Wiebusch, M. G.
Salabura, Piotr
Guber, F.
Greifenhagen, R.
Rodriguez-Ramos, P.
Holzmann, R.
Stroth, J.
Deveaux, C.
Harabasz, Szymon
Hlavac, S.
Lopes, L.
Naumann, L.
Münzer, R.
Belyaev, A.
Sturm, C.
Reshetin, A.
Ivashkin, A.
Bordalo, P.
Tsertos, H.
Piasecki, K.
Kurepin, A.
Traxler, M.
Adamczewski-Musch, J.
Sadovsky, A.
Epple, E.
Kotte, R.
Szala, M.
Chlad, L.
Wójcik, D.
Ströbele, H.
Rosier, P.
Ramstein, B.
Lorenz, M.
Selyuzhenkov, I.
Berger-Chen, J. C.
Karavicheva, T.
Kurilkin, P.
Gernhäuser, R.
Rost, A.
Zanevsky, Y.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Tytuł:
Charged-pion production in Au + Au collisions at $\sqrt{^{s}NN}=2.4$ GeV
Autorzy:
Lorenz, M.
Chernenko, S.
Pechenova, O.
Galatyuk, T.
Silva, L.
Markert, J.
Kotte, R.
Golubeva, M.
Rodriguez-Ramos, P.
Belounnas, A.
Böhmer, M.
Mangiarotti, A.
Adamczewski-Musch, J.
Müntz, C.
Siebenson, J.
Chlad, L.
Kämpfer, B.
Michel, J.
Piasecki, K.
Spies, S.
Sturm, C.
Harabasz, Szymon
Traxler, M.
Schwab, E.
Ivashkin, A.
Blanco, A.
Garzón, J. A.
Przygoda, Witold
Selyuzhenkov, I.
Lebedev, A.
Ladygin, V.
Wiebusch, M. G.
Gläßel, S.
Kornas, F.
Sadovsky, A.
Franco, C.
Lalik, Rafał
Nowakowski, Krzysztof
Pietraszko, J.
Petukhov, O.
Naumann, L.
Blume, C.
Kardan, B.
Ierusalimov, A.
Pechenov, V.
Ciepał, Izabela
Wójcik, D.
Rustamov, A.
Malige, Akshay
Bordalo, P.
Fröhlich, I.
Koenig, I.
Stroth, J.
Friese, J.
Münzer, R.
Reshetin, A.
Salabura, Piotr
Gernhäuser, R.
Ramos, S.
Schuldes, H.
Kurilkin, P.
Arnold, O.
Kolb, B. W.
Hlavac, S.
Maier, L.
Lopes, L.
Holzmann, R.
Spataro, S.
Kunz, T.
Ströbele, H.
Guber, F.
Sellheim, P.
Korcyl, Grzegorz
Höhne, C.
Fonte, P.
Pysz, K.
Smyrski, Jerzy
Mahmoud, T.
Heinz, T.
Wirth, J.
Epple, E.
Kugler, A.
Scozzi, F.
Filip, P.
Kornakov, G.
Rost, A.
Usenko, E.
Kurilkin, A.
Parpottas, Y.
Kurepin, A.
Deveaux, C.
Singh, Udai
Koenig, W.
Wagner, V.
Hennino, T.
Karavicheva, T.
Fateev, O.
Tsertos, H.
Metag, V.
Scheib, T.
Wendisch, C.
Lapidus, K.
Ramstein, B.
Mihaylov, D. M.
Seck, F.
Fabbietti, L.
Sobolev, Yu. G.
Tlusty, P.
Behnke, C.
Greifenhagen, R.
Berger-Chen, J. C.
Rosier, P.
Svoboda, O.
Zumbruch, P.
Belyaev, A.
Maurus, S.
Matulewicz, T.
Morozov, S.
Rathod, Narendra
Zanevsky, Y.
Gumberidze, M.
Kohls, M.
Szala, M.
Dreyer, J.
Dostawca treści:
Repozytorium Uniwersytetu Jagiellońskiego
Artykuł
Wyświetlanie 1-10 z 67

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