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1. Measurement of global polarization of Λ hyperons in few-GeV heavy-ion collisions

Author

R. Abou Yassine, J. Adamczewski-Musch, C. Asal, M. Becker, A. Belounnas, A. Blanco, C. Blume, L. Chlad, P. Chudoba, I. Ciepał, M. Cordts, J. Dreyer, W.A. Esmail, L. Fabbietti, H. Floersheimer, P. Fonte, J. Friese, I. Fröhlich, J. Förtsch, T. Galatyuk, T. Gniazdowski, R. Greifenhagen, M. Grunwald, M. Gumberidze, S. Harabasz, T. Heinz, C. Höhne, F. Hojeij, R. Holzmann, H. Huck, M. Idzik, B. Kämpfer, K-H. Kampert, B. Kardan, V. Kedych, I. Koenig, W. Koenig, M. Kohls, J. Kolas, G. Kornakov, R. Kotte, I. Kres, W. Krueger, A. Kugler, R. Lalik, S. Lebedev, S. Linev, F. Linz, L. Lopes, M. Lorenz, A. Malige, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, A. Molenda, C. Müntz, M. Nabroth, L. Naumann, K. Nowakowski, J. Orliński, J.-H. Otto, M. Parschau, C. Pauly, V. Pechenov, O. Pechenova, D. Pfeifer, K. Piasecki, J. Pietraszko, T. Povar, A. Prozorov, W. Przygoda, K. Pysz, B. Ramstein, N. Rathod, J. Ritman, P. Rodriguez-Ramos, A. Rost, A. Rustamov, P. Salabura, J. Saraiva, N. Schild, E. Schwab, F. Scozzi, F. Seck, I. Selyuzhenkov, U. Singh, L. Skorpil, J. Smyrski, S. Spies, M.S. Stefaniak, H. Ströbele, J. Stroth, K. Sumara, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, V. Wagner, M. Wasiluk, A.A. Weber, C. Wendisch, J. Wirth, H.P. Zbroszczyk, E. Zherebtsova, M. Zielinski, and P. Zumbruch

Subjects
Physics, QC1-999
Abstract

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 sNN=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 (pT) and rapidity (yCM) 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 〈PΛ〉(%)=6.8±1.3(stat.)±2.1(syst.) for Au+Au and 〈PΛ〉(%)=6.2±0.4(stat.)±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.

Published
2022
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2. Correlated pion-proton pair emission off hot and dense QCD matter

Author

J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, I. Ciepał, C. Deveaux, J. Dreyer, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, M. Kohls, B.W. Kolb, G. Korcyl, G. Kornakov, F. Kornas, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Malige, A. Mangiarotti, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, K. Piasecki, J. Pietraszko, W. Przygoda, K. Pysz, S. Ramos, B. Ramstein, N. Rathod, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, U. Singh, J. Smyrski, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, D. Wójcik, Y. Zanevsky, and P. Zumbruch

Subjects
Baryonic resonances, Heavy-ion reactions, Freezeout, Physics, QC1-999
Abstract

In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at sNN=2.42 GeV collected with HADES. In this energy regime the population of Δ(1232) resonances plays an important role in the way energy is distributed between intrinsic excitation energy and kinetic energy of the hadrons in the fireball. The triple differential d3N/dMπ±pdpTdy distributions of correlated π±p pairs have been determined by subtracting the πp combinatorial background using an iterative method. The invariant-mass distributions in the Δ(1232) mass region show strong deviations from a Breit-Wigner function with vacuum width and mass. The yield of correlated pion-proton pairs exhibits a complex isospin, rapidity and transverse-momentum dependence. In the invariant mass range 1.1

Published
2021
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3. Identical pion intensity interferometry in central Au+Au collisions at 1.23A GeV

Author

J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, K. Piasecki, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, D. Wójcik, Y. Zanevsky, and P. Zumbruch

Subjects
Physics, QC1-999
Abstract

We investigate identical pion HBT intensity interferometry in central Au+Au collisions at 1.23A GeV. High-statistics π−π− and π+π+ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinally comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy.

Published
2019
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4. Sub-threshold production of Ks0 mesons and Λ hyperons in Au+Au collisions at sNN=2.4 GeV

Author

J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, I. Selyuzhenkov, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, S. Spies, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, Y. Zanevsky, P. Zumbruch, and Y. Leifels

Subjects
Physics, QC1-999
Abstract

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.

Published
2019
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5. Σ0 production in proton nucleus collisions near threshold

Author

J. Adamczewski-Musch, G. Agakishiev, O. Arnold, E.T. Atomssa, C. Behnke, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, C. Deveaux, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, K. Gill, M. Golubeva, F. Guber, M. Gumberidze, S. Harabasz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, M. Jurkovic, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, A. Krása, E. Krebs, H. Kuc, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, S. Maurus, A. Mangiarotti, J. Markert, V. Metag, J. Michel, C. Müntz, R. Münzer, L. Naumann, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, V. Petousis, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, L. Rehnisch, A. Reshetin, A. Rost, A. Rustamov, A. Sadovsky, P. Salabura, T. Scheib, K. Schmidt-Sommerfeld, H. Schuldes, P. Sellheim, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, H. Tsertos, T. Vasiliev, V. Wagner, C. Wendisch, J. Wirth, J. Wüstenfeld, Y. Zanevsky, and P. Zumbruch

Subjects
Physics, QC1-999
Abstract

The production of Σ0 baryons in the nuclear reaction p (3.5 GeV) + Nb (corresponding to sNN=3.18 GeV) is studied with the detector set-up HADES at GSI, Darmstadt. Σ0s were identified via the decay Σ0→Λγ with subsequent decays Λ→pπ− in coincidence with a e+e− pair from either external (γ→e+e−) or internal (Dalitz decay γ⁎→e+e−) gamma conversions. The differential Σ0 cross section integrated over the detector acceptance, i.e. the rapidity interval 0.5

Published
2018
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6. Deep sub-threshold ϕ production in Au+Au collisions

Author

J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, R. Greifenhagen, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, W. Kühn, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K.N. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, M. Szala, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, Y. Zanevsky, and P. Zumbruch

Subjects
Physics, QC1-999
Abstract

We present data on charged kaons (K±) and ϕ mesons in Au(1.23A GeV)+Au collisions. It is the first simultaneous measurement of K− and ϕ mesons in central heavy-ion collisions below a kinetic beam energy of 10A GeV. The ϕ/K− multiplicity ratio is found to be surprisingly high with a value of 0.52±0.16 and shows no dependence on the centrality of the collision. Consequently, the different slopes of the K+ and K− transverse-mass spectra can be explained solely by feed-down, which substantially softens the spectra of K− mesons. Hence, in contrast to the commonly adapted argumentation in literature, the different slopes do not necessarily imply diverging freeze-out temperatures of K+ and K− mesons caused by different couplings to baryons.

Published
2018
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7. Partial wave analysis of the reaction p(3.5 GeV)+p→pK+Λ to search for the 'ppK−' bound state

Author

G. Agakishiev, O. Arnold, D. Belver, A. Belyaev, J.C. Berger-Chen, A. Blanco, M. Böhmer, J.L. Boyard, P. Cabanelas, S. Chernenko, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Finocchiaro, P. Fonte, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, K. Göbel, M. Golubeva, D. González-Díaz, F. Guber, M. Gumberidze, T. Heinz, T. Hennino, R. Holzmann, A. Ierusalimov, I. Iori, A. Ivashkin, M. Jurkovic, B. Kämpfer, T. Karavicheva, I. Koenig, W. Koenig, B.W. Kolb, G. Kornakov, R. Kotte, A. Krása, F. Krizek, R. Krücken, H. Kuc, W. Kühn, A. Kugler, T. Kunz, A. Kurepin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, L. Maier, A. Mangiarotti, J. Markert, V. Metag, J. Michel, C. Müntz, R. Münzer, L. Naumann, Y.C. Pachmayer, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, J. Pietraszko, W. Przygoda, B. Ramstein, A. Reshetin, A. Rustamov, A. Sadovsky, P. Salabura, A. Schmah, E. Schwab, J. Siebenson, Yu.G. Sobolev, S. Spataro, B. Spruck, H. Ströbele, J. Stroth, C. Sturm, A. Tarantola, K. Teilab, P. Tlusty, M. Traxler, H. Tsertos, T. Vasiliev, V. Wagner, M. Weber, C. Wendisch, J. Wüstenfeld, S. Yurevich, Y. Zanevsky, and A.V. Sarantsev

Subjects
Physics, QC1-999
Abstract

Employing the Bonn–Gatchina partial wave analysis framework (PWA), we have analyzed HADES data of the reaction p(3.5 GeV)+p→pK+Λ. This reaction might contain information about the kaonic cluster “ppK−” (with quantum numbers JP=0− and total isospin I=1/2) via its decay into pΛ. Due to interference effects in our coherent description of the data, a hypothetical K‾NN (or, specifically “ppK−”) cluster signal need not necessarily show up as a pronounced feature (e.g. a peak) in an invariant mass spectrum like pΛ. Our PWA analysis includes a variety of resonant and non-resonant intermediate states and delivers a good description of our data (various angular distributions and two-hadron invariant mass spectra) without a contribution of a K‾NN cluster. At a confidence level of CLs=95% such a cluster cannot contribute more than 2–12% to the total cross section with a pK+Λ final state, which translates into a production cross-section between 0.7 μb and 4.2 μb, respectively. The range of the upper limit depends on the assumed cluster mass, width and production process. Keywords: Kaonic nuclei, Anti-kaon–nucleon physics, ppK−, Low energy QCD, Partial wave analysis

Published
2015
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8. Real-Time Data Processing Pipeline for Trigger Readout Board-Based Data Acquisition Systems

Author

A. Malige, G. Korcyl, M. Firlej, T. Fiutowski, M. Idzik, B. Korzeniak, R. Lalik, A. Misiak, A. Molenda, J. Moron, N. Rathod, P. Salabura, J. Smyrski, K. Swientek, and P. Wintz

Subjects
real-time data processing, Nuclear and High Energy Physics, data acquisition systems (DAQs), Nuclear Energy and Engineering, tracking detectors, Electrical and Electronic Engineering
Published
2022

9. The potential of $\varLambda $ and $\varXi ^-$ studies with PANDA at FAIR

Author

M. Sachs, I. K. Keshk, Xi-Guang Cao, M. Traxler, Yan Liang, G. Mazza, C. Fritzsch, T. Holtmann, S. Godre, A. N. Skachkova, Edward Lisowski, E. Rosenthal, S. Yogesh, Y. K. Sun, H. Pace, D. A. Morozov, H. Deppe, J. Pütz, A. G. Denig, S. Ryzhikov, Hans-Georg Zaunick, Dirk Grunwald, A. Kantsyrev, Paolo Mengucci, Christoph Herold, P. Eugenio, Grzegorz Filo, A. Boukharov, M. Kesselkaul, Concettina Sfienti, A. Kulkarni, M. Lattery, J. Frech, A. Hayrapetyan, W. Zhu, A. A. Piskun, Zbigniew Rudy, V. E. Blinov, S. Spataro, Jens Hartmann, S. Schlimme, D. Branford, C. Schwarz, Michaela Thiel, G. Golovanov, T. Wasem, J. Schwiening, P. Wieczorek, E. Pyata, Ch. Hammann, D. Lehmann, Chinorat Kobdaj, V. Moiseev, P. Balanutsa, B. J. Liu, S. Bodenschatz, F. E. Maas, N. Wongprachanukul, Lorenzo Scalise, M. Hoek, A. K. Saxena, M. Virius, M. Steinke, N. Rathod, A.A. Efremov, A. Samartsev, I. Shein, Alexander Olshevskiy, Herbert Koch, V. Panjushkin, K. Nowakowski, S. Belostotski, S. Bukreeva, Ulrich Wiedner, U. Thöring, A.S. Vodopianov, J. Kellers, L. Robison, Ting Xiao, V. Crede, Egle Tomasi-Gustafsson, R. Karabowicz, P. Srisawad, F. Feldbauer, J. Reher, D. Kazlou, M. Yu. Barabanov, W. Kühn, M. Steinen, P. Wintz, D. Wölbing, A. Dbeyssi, M. Kunze, C. Hargens, A. Pitka, A. Lehmann, I. Augustin, Mathias Fink, P. Terlecki, A. E. Yakutin, Magnus Wolke, I. Kisel, V. Varentsov, U. Thoma, Nicola Bianchi, D. Bettoni, Antoni Szczurek, Dan Pantea, M. Slunecka, D. I. Glazier, H. H. Leithoff, Genady Gavrilov, P. Jiang, T. Simantathammakul, Felice Iazzi, E. Widmann, D. G. Ireland, C. Motzko, K.-T. Brinkmann, M. Schmidt, Johann Marton, J. Tao, W. Eyrich, M. Straube, Krzysztof Swientek, B. Krusche, N. K. Walford, S. Vejdani, G. Perez Andrade, Richard Wheadon, N. Kratochwil, H. Li, L. Jokhovets, S.G. Pivovarov, W. Ikegami Andersson, S. Grieser, A. Gerhardt, H. Qi, W. Lauth, S. Diehl, R. Beck, Krzysztof Korcyl, Angelo Rivetti, K. Makonyi, Yupeng Yan, P. P. Natali, G. Kesik, K. N. Basant, I. Lehmann, A. V. Stavinskiy, W. Esmail, M. Preston, A. Gillitzer, D. Calvo, Ayut Limphirat, A. Demekhin, J. Müllers, M. Pelizäus, Andrew Levin, Gianangelo Bracco, N. Quin, D. Lersch, V. Chernetsky, M. Domagala, N. Minaev, A. Balashoff, U. Müller, N. Hüsken, V. Abramov, Torbjörn Bäck, A. Ali, S. Pflüger, C. Yu, G. Boca, R. Klasen, N. Kristi, J. Zmeskal, T. Nasawad, A. Dolgolenko, A. Belousov, B. Wohlfahrt, H. Xu, R. Dosdall, E. Maslova, Gianni Barucca, M.P. Bussa, B. Seitz, J. S. Díaz, G. Hunter, M. Volf, V.Kh. Dodokhov, Piotr Lebiedowicz, A. Scholl, Grzegorz Korcyl, H. Loehner, Mohammed Al-Turany, Andrzej Kupsc, R. W. Novotny, L. Montalto, A. E. Blinov, J. Kannika, Andrey Uzunian, R. Lalik, P. N. Deepak, P.-E. Tegnér, E. Antokhin, A. Gerasimov, P. De Remigis, X. Zhou, Petr Gallus, P. Orsich, I. Prochazka, Valentino Rigato, S. Maldaner, M. Himmelreich, V. M. Abazov, J. Płażek, Kazem Azizi, James Ritman, S. Wolff, Andrea Bianconi, Nicola Paone, W. Nalti, S. Kegel, I. A. Kuyanov, M. Steinacher, A. Chlopik, V. Lucherini, A. Belias, K. K. Seth, Mario Bragadireanu, C. J. Schmidt, V. Freudenreich, A. Ehret, G. V. Fedotov, J. Li, A. Galoyan, G. Neue, P. Schakel, M. Wojciechowski, B. Kopf, C. Liu, P. Gianotti, X. Ma, R. Kappert, Oleg V. Missevitch, J. Pereira-de-Lira, X. Zhang, D. Melnychuk, Paweł Moskal, I. Köseoglu, Bo Cederwall, K. Götzen, M. Finger, M. Marcisovsky, A. Derevschikov, V. Goryachev, V. Jary, R. Kunne, Y. Zhou, G. Reicherz, C. Schnier, J. G. Messchendorp, M. Michałek, T. Erlen, D. Miehling, G. D. Alexeev, Hasko Stenzel, A. Fechtchenko, L. Schmitt, J. Rieger, M. Zyzak, Michael Papenbrock, F. Schupp, Sean A Dobbs, J. Pochodzalla, S. Chernichenko, S. Shimanski, A. Mustafa, K. Dutta, M. Kümmel, S. Bökelmann, S. Sun, Bruce Yabsley, I. Zimmermann, E.K. Koshurnikov, B. Zwieglinski, O. Malyshev, H. Flemming, O. Korchak, U. Kurilla, F. Nerling, M. Pugach, Claude Amsler, G. Huang, A. Akram, L. Sohl, B. J. Roy, S. Wronka, Andrey V. Izotov, Vaclav Vrba, A. Malige, M. Kuhlmann, E. Prencipe, R. Böhm, R. Schubert, Matthias Richter, M. Krebs, L. Nogach, Frank Goldenbaum, B. Ramstein, X. Y. Shen, Paul Alois Buhler, S. I. Manaenkov, A. Aycock, M. Küßner, A. Khoukaz, E. Luschevskaya, K. Khosonthongkee, C. Wenzel, M. Pfaffinger, J. Lühning, P. Poznański, Fabrizio Daví, S. Koch, O. Corell, M. Kavatsyuk, Bernd Voss, B. Hetz, Daniele Rinaldi, J. Regina, L. Capozza, J. Novy, V. Ferapontov, A. Kozela, D. Y. Kirin, U. Lynen, T. Johansson, S. Orfanitski, M. Tomasek, A. Derichs, Andrea Lavagno, Krisztian Peters, A. Ryazantsev, Daniel Duda, Valery Dormenev, M. Peskova, X. A. Xiong, O. Noll, M. Rossbach, M. Fritsch, N. I. Zhuravlev, Tomasz Fiutowski, S. Zimmermann, Y. Melnik, V. A. Matveev, A. Täschner, P. Salabura, S.A. Kononov, T. Triffterer, J. S. Lange, K. Pysz, K. Kalita, W. Erni, Ajay Kumar Rai, D. P. Watts, Lennart Isaksson, Utpal N. Roy, M. Strickert, M. Böhm, M. Albrecht, Y. Bettner, Boris Batyunya, A. Hamdi, J. Hofmann, Jize Zhao, R. Dzhygadlo, T. Held, V. V. Tokmenin, K. Manasatitpong, Andrei Fedorov, H. Orth, Hans Calén, M. Urban, G. Zhao, F. Lisowski, Witold Przygoda, D. Prasuhn, M. Zambrana, W. Schäfer, S. Bleser, A. K. Hergemöller, M. Pesek, Y. A. Tikhonov, A. Filippi, M. Peter, Volker Metag, M. Moritz, A. Kripko, J. Tarasiuk, S. Schadmand, G. Schepers, S. Poslavskiy, Andreas Martin Heinz, Anne-Laure Martin, L. Brück, Antonin Kveton, V. Mochalov, D. Steinschaden, M. Bölting, N. Er, Ch. Schmidt, Mikhail Korzhik, V. Astakhov, Konstantin Beloborodov, H. Denizli, T. Saito, R. Hagdorn, Pawel Marciniewski, D. Veretennikov, C. Morales Morales, Harphool Kumawat, Karin Schönning, Marek Idzik, M. O. Distler, A. Golubev, E. Ladygina, G. Kozlov, Tobias Stockmanns, C. Hahn, N. Cao, T. Sefzick, Giovanni Lancioni, V. Serdyuk, B. Ketzer, Jerzy Smyrski, D. Bonaventura, P. Wüstner, Yu. Yu. Lobanov, V. Pothodi Chackara, Mariana Nanova, B. Salisbury, E. A. Kravchenko, L. Tomasek, D. Bumrungkoh, Patrick Achenbach, W. Alkakhi, V. Uzhinsky, Y. Goncharenko, Harald Merkel, A. Atac, D. Rodríguez Piñeiro, A. Verkheev, P. Fedorets, S. Nakhoul, F. H. Heinsius, Q. Hu, N. B. Skachkov, S. Pongampai, R. Schmitz, E. A. Strokovsky, Zhiyong Liu, H. Peng, V. Arefiev, K. Föhl, D. Liu, P. Semenov, V. Rodin, Keval Gandhi, P. Kulessa, O. Miklukho, A. Vasiliev, P. Brand, A. A. Zhdanov, R. Kliemt, P. Grasemann, A. Yu. Barnyakov, Z. Li, A. Meschanin, Michael Düren, S. Ahmed, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), PANDA, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), BAİBÜ, Fen Edebiyat Fakültesi, Fizik Bölümü, Denizli, Haluk, and 0-Belirlenecek

Subjects
+Antixi+Xi%22">anti-p p --> Antixi Xi, Hadron, hyperon: pair production, correction: efficiency, 01 natural sciences, 13.30.-a, symmetry: CP, High Energy Physics - Experiment, Subatomär fysik, benchmark, Subatomic Physics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Electromagnetic Form-Factors, Nuclear Experiment, Spin-½, Physics, Antihyperon Production, Hyperon, PANDA, strong interaction, Observable, hyperon: production, 13.88.+, +Antilambda+Lambda%22">anti-p p --> Antilambda Lambda, Production (computer science), Low-Energy, Nuclear and High Energy Physics, Particle physics, Cp-Violation, +Lambda+pi%22">Xi- --> Lambda pi, Bar (music), spin: correlation, Strong interaction, Hyperons, nonperturbative, 13.60.R, hyperon: decay, 0103 physical sciences, anti-p p: scattering, ddc:530, anti-p: beam, 010306 general physics, polarization, 010308 nuclear & particles physics, background, High Energy Physics::Phenomenology, antihyperon, [No Keywords], Exchange, 13.75.-n, Decay, hyperon: ground state, Antiproton, High Energy Physics::Experiment
Abstract

The antiproton experiment PANDA at FAIR is designed to bring hadron physics to a new level in terms of scope, precision and accuracy. In this work, its unique capability for studies of hyperons is outlined. We discuss ground-state hyperons as diagnostic tools to study non-perturbative aspects of the strong interaction, and fundamental symmetries. New simulation studies have been carried out for two benchmark hyperon-antihyperon production channels: $\bar{p}p \to \bar{\Lambda}\Lambda$ and $\bar{p}p \to \bar{\Xi}^+\Xi^-$. The results, presented in detail in this paper, show that hyperon-antihyperon pairs from these reactions can be exclusively reconstructed with high efficiency and very low background contamination. In addition, the polarisation and spin correlations have been studied, exploiting the weak, self-analysing decay of hyperons and antihyperons. Two independent approaches to the finite efficiency have been applied and evaluated: one standard multidimensional efficiency correction approach, and one efficiency independent approach. The applicability of the latter was thoroughly evaluated for all channels, beam momenta and observables. The standard method yields good results in all cases, and shows that spin observables can be studied with high precision and accuracy already in the first phase of data taking with PANDA., Comment: 26 pages, 16 figures. Changes: Revised title and abstract and corrections/clarifications in the text according to suggestions by journal referees

Published
2021

10. Study of excited $$arvec{arXi }$$ baryons with the $$overline{ ext{ P }}$$ANDA detector

Author

Egle Tomasi-Gustafsson, R. Karabowicz, A. Kripko, M. Domagala, U. Müller, Pawel Marciniewski, D. Veretennikov, Xuan Zhang, Y. A. Tikhonov, A. Hamdi, J. Hofmann, A. Filippi, A. Golubev, Tobias Stockmanns, V. Abramov, C. Hahn, A. Belias, K. Nowakowski, V. Serdyuk, M. Pelizä, Z. Tavukoglu, B. Ketzer, Jerzy Smyrski, J. Pütz, O. Malyshev, U. Kurilla, Konstantin Beloborodov, V. Chauhan, R. W. Novotny, A. Kantsyrev, P. Balanutsa, B. J. Liu, D. G. Ireland, Petr Gallus, G. D. Alexeev, D. Bonaventura, A. V. Stavinskiy, C. Motzko, K.-T. Brinkmann, H. Denizli, V. Crede, I. Zimmermann, E.K. Koshurnikov, Jize Zhao, R. Dzhygadlo, Kazem Azizi, A. Chlopik, Fabrizio Daví, V. Ferapontov, D. Y. Kirin, P. Wüstner, M. Fritsch, N. I. Zhuravlev, D. Rodríguez Piñeiro, Dan Pantea, A. Täschner, W. Eyrich, T. Held, W. Esmail, T. Triffterer, V. V. Tokmenin, K. Manasatitpong, W. Kühn, A. Khoukaz, A. Ali, Alexander Olshevskiy, S. Koch, J. Rieger, R. Hagdorn, S. Godre, V. Lucherini, T. Erlen, Herbert Koch, Y. K. Sun, Mariana Nanova, A. Verkheev, M. Marcisovsky, P. Fedorets, Yan Liang, Claude Amsler, M. Slunecka, S. Nakhoul, J. Müllers, Krisztian Peters, J. Oppotsch, A. Malige, N. Hüsken, B. Salisbury, G. Huang, S. Sun, F. Nerling, A. A. Piskun, F. H. Heinsius, G. Mazza, S. I. Manaenkov, O. Noll, A. T. Olgun, E. Antokhin, A. Gerasimov, S. Spataro, P. Salabura, D. Bumrungkoh, Q. Hu, Kamal K. Seth, D. P. Watts, S. Shimanski, V. Uzhinsky, M. Krebs, S. Bodenschatz, Karin Schönning, C. Yu, G. Perez-Andrade, G. Boca, Krzysztof Swientek, V. E. Blinov, P. De Remigis, C. J. Schmidt, Paolo Mengucci, Christoph Herold, F. Lisowski, E. A. Strokovsky, N. B. Skachkov, Y. Goncharenko, Harald Merkel, Lennart Isaksson, S. Maldaner, S. Pongampai, F. Khalid, W. Lauth, F. Feldbauer, G. Reicherz, Volker Metag, C. Mannweiler, M. Moritz, L. Montalto, Piotr Lebiedowicz, D. Prasuhn, A. Scholl, Michaela Thiel, R. Schmitz, S. Pflüger, J. Kannika, M. Albrecht, M. Volf, V.Kh. Dodokhov, P. Poznański, Marek Idzik, M. O. Distler, I. Shein, T. Wasem, J. Schwiening, T. Sefzick, Giovanni Lancioni, J. Tarasiuk, E. Ladygina, Hans-Georg Zaunick, A. E. Blinov, N. Wongprachanukul, W. Schäfer, S. Schadmand, G. Schepers, Yu. Yu. Lobanov, I. Augustin, Mathias Fink, D. Lehmann, P. Terlecki, P. Eugenio, Concettina Sfienti, S. Poslavskiy, M. Virius, S. Schlimme, C. Schwarz, Andreas Martin Heinz, Andrey Uzunian, B. Zwieglinski, M. Lattery, A. E. Yakutin, P.-E. Tegnér, H. Peng, J. Pereira-de-Lira, Ting Xiao, A.A. Efremov, James Ritman, L. Brück, Antonin Kveton, V. Mochalov, V. M. Abazov, S. Wolff, E. A. Kravchenko, E. Prencipe, F. E. Maas, R. Beck, Krzysztof Korcyl, Lorenzo Scalise, Gianangelo Bracco, L. Tomasek, Patrick Achenbach, A. Derevschikov, E. Vishnevsky, D. Melnychuk, M. Firlej, P. Srisawad, A. Dbeyssi, J. Petersen, I. Köseoglu, D. Miehling, M. Bölting, J. Regina, P. Wintz, J. Reher, W. Alkakhi, H. H. Leithoff, S. Bleser, S. Kegel, N. Er, S. Pankonin, Antoni Szczurek, D. Kazlou, M. Yu. Barabanov, Dirk Grunwald, L. Capozza, L. Linzen, D. Liu, V. Freudenreich, A. Ehret, C. Liu, Yupeng Yan, P. Gianotti, R. Dosdall, Ch. Schmidt, M. Steinen, Y. Zhou, A. Demekhin, A. Galoyan, M. Preston, Zhengtai Liu, T. Holtmann, Paweł Moskal, Mikhail Korzhik, A. Boukharov, D. Klostermann, S. Orfanitski, E. Pyata, P. P. Natali, G. Golovanov, M. Pesek, Ch. Hammann, C. Schnier, J. G. Messchendorp, P. Semenov, V. Rodin, Valentino Rigato, B. Kopf, Keval Gandhi, Daniel Duda, Andrea Bianconi, D. I. Glazier, A. Gillitzer, A. Akram, H. Flemming, M. Kümmel, M. Steinke, I. A. Kuyanov, N. Rathod, D. Calvo, D. Wölbing, R. Böhm, Ali Yilmaz, F. Schupp, Sean A Dobbs, J. Pochodzalla, U. Lynen, S. Chernichenko, B. Krusche, Felice Iazzi, Richard Wheadon, X. Y. Shen, L. Jokhovets, S.G. Pivovarov, R. Kappert, A. Lehmann, Ayut Limphirat, P. Kulessa, I. Lehmann, Andrea Lavagno, N. Kristi, T. Nasawad, A. Dolgolenko, M. Peskova, J. Płażek, Tomasz Fiutowski, L. Nogach, G. V. Fedotov, E. Luschevskaya, E. Maslova, R. Lalik, K. Khosonthongkee, C. Wenzel, M. Pfaffinger, Grzegorz Korcyl, O. Miklukho, A. N. Skachkova, Edward Lisowski, V. Jary, M. Kavatsyuk, M. Himmelreich, H. Deppe, A. G. Denig, A. Vasiliev, A. Derichs, J. Frech, A. Hayrapetyan, W. Zhu, Chinorat Kobdaj, P. Brand, E. Rosenthal, S. Belostotski, Ulrich Wiedner, A.S. Vodopianov, J. Kellers, U. Keskin, U. Thoma, R. Kliemt, A. Yu. Barnyakov, Bo Cederwall, K. Götzen, A. Meschanin, Michael Düren, Johann Marton, V. Chernetsky, Gianni Barucca, H. Loehner, Vaclav Vrba, M. Sachs, I. K. Keshk, Xi-Guang Cao, M. Traxler, S. Diehl, Andrew Levin, M.P. Bussa, S. Yerlikaya, Nicola Paone, A. Samartsev, P. Jiang, A. Fechtchenko, L. Schmitt, Michael Papenbrock, Bernd Voss, B. Hetz, Daniele Rinaldi, V. Moiseev, Magnus Wolke, V. Varentsov, M. Schmidt, N. Minaev, A. Balashoff, Mohammed Al-Turany, Andrzej Kupsc, P. Orsich, M. Steinacher, M. Finger, V. Panjushkin, H. Xu, M. Michałek, S. Bökelmann, S. Wronka, Andrey V. Izotov, M. Bukharova, G. Neue, R. Schubert, M. Tomasek, D. A. Morozov, S. Zimmermann, J. Grochowski, P. Wieczorek, S. Ryzhikov, M. Hoek, A. Gerhardt, H. Qi, Jens Hartmann, B. Seitz, S. Bukreeva, X. Zhou, G. Kesik, I. Prochazka, Mario Bragadireanu, K. Pysz, S. Coen, O. Korchak, K. Kalita, M. Küßner, O. Corell, T. Johansson, A. Ryazantsev, Y. Melnik, V. A. Matveev, S.A. Kononov, H. Orth, Hans Calén, M. Urban, G. Zhao, Witold Przygoda, T. Simantathammakul, J. Moron, J. Li, Oleg V. Missevitch, Frank Goldenbaum, Ajay Kumar Rai, M. Strickert, M. Böhm, Grzegorz Filo, M. Kunze, W. Ikegami Andersson, R. Klasen, S. Vestrick, Paul Alois Buhler, J. Lühning, J. Novy, Valery Dormenev, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay

Subjects
Nuclear and High Energy Physics, hyperon: particle source, Hadron, Type (model theory), [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, decay modes, Combinatorics, Tree (descriptive set theory), excited state: spectrum, 0103 physical sciences, ddc:530, structure, 010306 general physics, Nuclear Experiment, Physics, 010308 nuclear & particles physics, baryon: excited state, Spectrum (functional analysis), Hyperon, anti-p, Baryon, statistics, efficiency, Excited state, Production (computer science), acceptance
Abstract

The European physical journal / A 57(4), 149 (2021). doi:10.1140/epja/s10050-021-00444-5, Published by Springer, Heidelberg

Published
2021

11. PANDA Phase One: PANDA collaboration

Author

R. Klasen, S. Vestrick, Grzegorz Filo, S. Diehl, M. Kunze, W. Ikegami Andersson, A. V. Stavinskiy, Yupeng Yan, Felice Iazzi, D. Rodríguez Piñeiro, J. Müllers, Andrew Levin, Paul Alois Buhler, J. Lühning, J. Novy, Valery Dormenev, James Ritman, Piotr Lebiedowicz, L. Montalto, M. Küßner, A. Scholl, Frank Goldenbaum, Ali Yilmaz, Yan Liang, W. Esmail, M.P. Bussa, A. Ali, L. Jokhovets, S.G. Pivovarov, D. Bonaventura, A. Verkheev, S. Rimjaem, M. Preston, A. T. Olgun, Konstantin Beloborodov, P. Fedorets, A. Hamdi, M. Volf, S. Yerlikaya, S. Nakhoul, J. Kannika, O. Corell, A. Vasiliev, G. Mazza, E. Antokhin, A. Gerasimov, Egle Tomasi-Gustafsson, J. Hofmann, R. Karabowicz, V.Kh. Dodokhov, A. E. Blinov, P.-E. Tegnér, Andrey Uzunian, S. Wolff, M. Steinen, L. Linzen, Y. Zhou, F. H. Heinsius, Zhengtai Liu, P. De Remigis, C. J. Schmidt, I. Lehmann, H. Denizli, H. Deppe, Ajay Kumar Rai, T. Johansson, T. Holtmann, A. G. Denig, V. Panjushkin, J. Frech, A. Hayrapetyan, W. Zhu, L. Nogach, E. Vishnevsky, D. Melnychuk, Q. Hu, I. Köseoglu, Andrea Bianconi, J. Pereira-de-Lira, A. Derevschikov, A. Belias, O. Malyshev, D. Miehling, Nicola Paone, K. Pysz, A. Ryazantsev, D. I. Glazier, G. Reicherz, R. Hagdorn, M. Strickert, M. Böhm, Chinorat Kobdaj, P. Brand, Vladimir Blinov, P. Wüstner, X. Y. Shen, Paolo Mengucci, Christoph Herold, M. Pelizäus, G. V. Fedotov, T. Nasawad, A. Dolgolenko, N. B. Skachkov, S. Pongampai, S. Coen, Y. Melnik, V. A. Matveev, U. Kurilla, V. Jary, B. Zwieglinski, F. Khalid, A. Gillitzer, D. Calvo, Andreas Martin Heinz, M. Kavatsyuk, Mariana Nanova, S. Belostotski, K. Nowakowski, Claude Amsler, T. Erlen, K. Kalita, M. Domagala, A. Derichs, Ulrich Wiedner, E. Prencipe, L. Brück, R. Schmitz, Antonin Kveton, V. Mochalov, A.S. Vodopianov, J. Kellers, J. Rieger, G. Huang, N. Wongprachanukul, Bo Cederwall, K. Götzen, A. N. Skachkova, Edward Lisowski, J. Pütz, U. Müller, C. Motzko, K.-T. Brinkmann, S.A. Kononov, Dirk Grunwald, G. Neue, U. Thoma, R. Lalik, A. Kantsyrev, S. Sun, M. Virius, B. Salisbury, J. Oppotsch, Jize Zhao, R. Dzhygadlo, T. Held, F. Nerling, G. D. Alexeev, M. Bölting, A. Boukharov, G. Golovanov, I. Zimmermann, N. Er, A. Malige, S. Godre, Ting Xiao, M. Wojciechowski, Ch. Schmidt, T. Simantathammakul, B. Seitz, P. Balanutsa, B. J. Liu, V. Crede, M. Krebs, E. Rosenthal, Y. K. Sun, D. G. Ireland, W. Kühn, V. Abramov, Z. Tavukoglu, Mikhail Korzhik, A. Kripko, S. Spataro, D. Bumrungkoh, V. M. Abazov, R. Schubert, H. Flemming, Vaclav Vrba, S. I. Manaenkov, S. Kegel, A. Lehmann, U. Keskin, Hans-Georg Zaunick, R. Kliemt, V. Uzhinsky, Karin Schönning, X. Zhou, R. Böhm, S. Maldaner, J. Moron, D. P. Watts, E.K. Koshurnikov, M. Slunecka, P. Poznański, M. Firlej, P. Srisawad, A. Yu. Barnyakov, D. Kazlou, M. Yu. Barabanov, J. Płażek, V. Chauhan, R. W. Novotny, S. Schlimme, C. Schwarz, Y. Goncharenko, Lennart Isaksson, P. Eugenio, Kamal K. Seth, Concettina Sfienti, Harald Merkel, H. Xu, A. Meschanin, Marek Idzik, Mario Bragadireanu, Kazem Azizi, M. Lattery, C. Yu, G. Perez-Andrade, G. Boca, C. Liu, A. Chlopik, Johann Marton, Jens Hartmann, A. Samartsev, M. O. Distler, Dan Pantea, W. Eyrich, P. Gianotti, J. Li, E. Ladygina, Michael Düren, M. Albrecht, M. Tomasek, J. Regina, Michaela Thiel, I. Shein, L. Capozza, V. Chernetsky, Y. A. Tikhonov, Oleg V. Missevitch, V. Lucherini, Lorenzo Scalise, Fabrizio Daví, J. Petersen, F. E. Maas, A. Filippi, Gianni Barucca, T. Wasem, J. Reher, J. Schwiening, P. Wintz, O. Korchak, M. Marcisovsky, Volker Metag, S. Zimmermann, N. Hüsken, S. Pankonin, P. Jiang, Antoni Szczurek, C. Schnier, H. Orth, S. Bukreeva, H. Loehner, S. Orfanitski, D. Lehmann, C. Mannweiler, V. Ferapontov, D. Y. Kirin, M. Moritz, C. Hahn, D. A. Morozov, J. Grochowski, A. A. Piskun, Hans Calén, Christoph Hanhart, S. Bodenschatz, J. Tarasiuk, Christian S. Fischer, M. Urban, G. Zhao, T. Sefzick, A. Demekhin, P. Wieczorek, Giovanni Lancioni, Daniel Duda, M. Hoek, A. Akram, S. Ryzhikov, Yu. Yu. Lobanov, E. A. Strokovsky, A. Galoyan, F. Feldbauer, S. Shimanski, A.A. Efremov, Paweł Moskal, H. Peng, G. Kesik, S. Schadmand, B. Kopf, G. Schepers, B. Krusche, J. G. Messchendorp, V. V. Tokmenin, K. Manasatitpong, A. Dbeyssi, M. Fritsch, Witold Przygoda, S. Poslavskiy, Valentino Rigato, A. Khoukaz, M. Kümmel, D. Klostermann, S. Koch, E. A. Kravchenko, M. Sachs, Ayut Limphirat, L. Tomasek, I. K. Keshk, D. Liu, P. P. Natali, A. Gerhardt, H. Qi, I. A. Kuyanov, Patrick Achenbach, Alexander Olshevskiy, W. Alkakhi, N. Kristi, H. H. Leithoff, N. I. Zhuravlev, P. Semenov, V. Rodin, Keval Gandhi, E. Maslova, Xi-Guang Cao, M. Traxler, Herbert Koch, A. Täschner, Grzegorz Korcyl, Krisztian Peters, P. Kulessa, Sinead M. Ryan, F. Schupp, Sean A Dobbs, J. Pochodzalla, M. Himmelreich, S. Chernichenko, O. Noll, T. Triffterer, F. Lisowski, P. Salabura, Krzysztof Swientek, Pawel Marciniewski, D. Veretennikov, W. Lauth, Xuan Zhang, I. Prochazka, D. Prasuhn, Johann Haidenbauer, S. Pflüger, W. Schäfer, A. Golubev, Tobias Stockmanns, S. Bleser, V. Serdyuk, M. Michałek, B. Ketzer, Jerzy Smyrski, S. Bökelmann, V. Freudenreich, A. Ehret, S. Wronka, R. Kappert, Andrey V. Izotov, M. Bukharova, E. Luschevskaya, K. Khosonthongkee, C. Wenzel, M. Pfaffinger, E. Pyata, Ch. Hammann, M. Steinke, A. Fechtchenko, L. Schmitt, Michael Papenbrock, N. Rathod, D. Wölbing, Richard Wheadon, U. Lynen, Andrea Lavagno, M.F.M. Lutz, Bernd Voss, B. Hetz, Daniele Rinaldi, Tomasz Fiutowski, V. Moiseev, Magnus Wolke, V. Varentsov, M. Schmidt, N. Minaev, A. Balashoff, Mohammed Al-Turany, Andrzej Kupsc, P. Orsich, M. Steinacher, M. Finger, I. Augustin, Mathias Fink, P. Terlecki, A. E. Yakutin, R. Beck, Krzysztof Korcyl, Gianangelo Bracco, R. Dosdall, and O. Miklukho

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Physics::Instrumentation and Detectors, Physics beyond the Standard Model, Hadron, Detector, Strong interaction, 01 natural sciences, Antiproton, 0103 physical sciences, Facility for Antiproton and Ion Research, 010306 general physics, Nuclear Experiment, Storage ring
Abstract

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or $$\overline{\mathrm{P}}$$ P ¯ ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper.

Published
2021

12. A systematic study of LYSO:Ce, LuAG:Ce and GAGG:Ce scintillating fibers properties

Author

Aleksandra Wrońska, K. Rusiecka, W. Migdał, A. Stahl, M.L. Wong, A. Magiera, R. Hetzel, M. Kołodziej, M. Kazemi Kozani, M. Rafecas, J. Kasper, R. Lalik, V. Urbanevych, and N. Kohlhase

Subjects
Materials science, Physics::Instrumentation and Detectors, Instrumentation, Mathematical Physics, Lyso
Abstract

Properties of different scintillating fibers were examined and compared, as a part of the design optimization of the SiFi-CC detector, currently under development for proton therapy monitoring. Three scintillating materials were considered as candidates to constitute the active part of the detector: LYSO:Ce, LuAG:Ce and GAGG:Ce. All investigated samples had an elongated, fiber-like shape and were read out on both ends using silicon photomultipliers (SiPMs). Samples of LYSO:Ce material provided by four different manufacturers were included in the survey. Additionally, different types of optical coupling media, wrapping and coating materials were investigated. The following properties of the scintillating fibers were determined: attenuation length, position-, energy-, timing resolution and light collection. Two models were used to describe the propagation of scintillating light in the fiber and quantify the light attenuation: exponential light attenuation model (ELA) and exponential light attenuation model with light reflection (ELAR). Energy and position reconstruction were also performed using the two above methods. It was shown, that the ELAR model performs better in terms of description of the light attenuation process. However, energy and position reconstruction results are comparable for the two proposed methods. Based on the results of measurements with scintillating fibers in different configurations we concluded that LYSO:Ce fibers wrapped in Al foil (bright side facing towards the fiber) provided the best trade-off between the energy- (8.56% at 511 keV) and position (32 mm) resolutions and thus will be the optimal choice for the SiFi-CC detector. Additionally, the study of different optical coupling media showed, that the silicone pads coupling ensures good stability of the system performance and parameters.

Published
2021

13. Directed, Elliptic, and Higher Order Flow Harmonics of Protons, Deuterons, and Tritons inAu+AuCollisions atsNN=2.4 GeV

Author

M. Lorenz, S. Spataro, A. Malige, Roman Gernhäuser, A. Kugler, J. Dreyer, I. Fröhlich, Alexander Belyaev, Tatiana Karavicheva, T. Hennino, C. Behnke, P. Tlusty, L. Chlad, C. Wendisch, T. Heinz, Kirill Lapidus, S. Spies, Yu. G. Sobolev, J. A. Garzón, C. Müntz, F. Seck, A. Blanco, P. Fonte, B. Kämpfer, I. Koenig, Laura Fabbietti, Ilya Selyuzhenkov, L. Lopes, P. Zumbruch, Eliane Epple, A. Ivashkin, R. Kotte, K. Pysz, T. Scheib, O. Pechenova, P. Bordalo, C. Deveaux, H. Ströbele, M. Gumberidze, J. Pietraszko, Fedor Guber, R. Greifenhagen, Andrey Reshetin, M. Mamaev, C. Sturm, Oliver Werner Arnold, N. Rathod, V. Wagner, R. H. Munzer, D. M. Mihaylov, P. Rosier, S. Maurus, Y. Parpottas, O. Svoboda, J. Stroth, L. Silva, J. Friese, F. Scozzi, J. Adamczewski-Musch, V. Pechenov, K. Nowakowski, Sergey V. Morozov, B. Kardan, O. Petukhov, Grzegorz Korcyl, T. Mahmoud, B. W. Kolb, R. Lalik, A. K. Kurilkin, Krzysztof Piasecki, T. Kunz, P. Sellheim, A. Rost, Udai Pratap Singh, Christoph Blume, P. Filip, Yu.V. Zanevsky, Witold Przygoda, C. Franco, M. B. Golubeva, P. Rodriguez-Ramos, W. Koenig, G. Kornakov, B. Ramstein, T. Matulewicz, D. Wójcik, S. P. Chernenko, Volker Metag, A. Sadovsky, J. Michel, A. Lebedev, J. Wirth, M. Szala, A. Belounnas, A. B. Kurepin, S. Harabasz, M. Traxler, Jerzy Smyrski, M. Böhmer, A. Mangiarotti, T. Galatyuk, Piotr Salabura, L. Naumann, L. Maier, P. K. Kurilkin, C. Höhne, M. G. Wiebusch, E. Usenko, H. Schuldes, Izabela Ciepał, J. C. Berger-Chen, R. Holzmann, J. Markert, S. Ramos, S. Hlavac, V. P. Ladygin, O. V. Fateev, O. Golosov, F. Kornas, M. Kohls, J. Siebenson, E. Schwab, A.P. Ierusalimov, A. Rustamov, and H. Tsertos

Subjects
Physics, Equation of state, Spectrometer, Nuclear Theory, Elliptic flow, General Physics and Astronomy, 01 natural sciences, 7. Clean energy, Baryon, Nuclear physics, Deuterium, Flow (mathematics), Harmonics, 0103 physical sciences, Rapidity, Nuclear Experiment, 010306 general physics
Abstract

Flow coefficients vn of the orders n=1-6 are measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI for protons, deuterons, and tritons as a function of centrality, transverse momentum, and rapidity in Au+Au collisions at sNN=2.4 GeV. Combining the information from the flow coefficients of all orders allows us to construct for the first time, at collision energies of a few GeV, a multidifferential picture of the angular emission pattern of these particles. It reflects the complicated interplay between the effect of the central fireball pressure on the emission of particles and their subsequent interaction with spectator matter. The high precision information on higher order flow coefficients is a major step forward in constraining the equation of state of dense baryonic matter.

Published
2020

14. Charged-pion production in $$\mathbf {Au+Au}$$ collisions at $$\sqrt{\mathbf {s}_{\mathbf {NN}}} = 2.4~{\mathbf {GeV}}$$

Author

L. Silva, C. Wendisch, K. Nowakowski, Tatiana Karavicheva, C. Behnke, J. A. Garzón, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, T. Galatyuk, E. Epple, S. Maurus, Piotr Salabura, L. Naumann, P. Rosier, P. Bordalo, Laura Fabbietti, C. Höhne, M. G. Wiebusch, E. Usenko, L. Maier, Christoph Blume, B. Kardan, V. Pechenov, M. Lorenz, Y. Parpottas, W. Koenig, H. Schuldes, S. Harabasz, O. Petukhov, M. Böhmer, A. Mangiarotti, A. K. Kurilkin, B. W. Kolb, E. Schwab, B. Kämpfer, A. Malige, Fedor Guber, P. Filip, A. Rost, M. Gumberidze, Yu. G. Sobolev, C. Müntz, R. Holzmann, J. Markert, S. Ramos, V. P. Ladygin, I. Koenig, Yu.V. Zanevsky, T. Heinz, P. Zumbruch, F. Scozzi, Izabela Ciepał, P. K. Kurilkin, Ilya Selyuzhenkov, T. Hennino, Oliver Werner Arnold, J. Adamczewski-Musch, M. B. Golubeva, P. Rodriguez-Ramos, A.P. Ierusalimov, F. Kornas, Grzegorz Korcyl, L. Chlad, H. Tsertos, O. Pechenova, A. Lebedev, Roman Gernhäuser, B. Ramstein, S. Hlavac, T. Matulewicz, A. Kugler, J. Pietraszko, A. Belounnas, A. B. Kurepin, M. Traxler, J. Dreyer, Alexander Belyaev, A. Sadovsky, A. Rustamov, J. C. Berger-Chen, S. Spies, C. Sturm, N. Rathod, S. Gläßel, C. Franco, Sergey V. Morozov, F. Seck, K. Pysz, T. Scheib, Witold Przygoda, M. Kohls, J. Siebenson, G. Kornakov, J. Friese, Udai Pratap Singh, C. Deveaux, R. Greifenhagen, O. Svoboda, R. Lalik, L. Lopes, Joachim Stroth, S. Spataro, I. Fröhlich, P. Tlusty, T. Mahmoud, P. Sellheim, H. Ströbele, V. Wagner, Andrey Reshetin, R. H. Munzer, D. M. Mihaylov, S. P. Chernenko, Volker Metag, J. Michel, J. Wirth, Krzysztof Piasecki, T. Kunz, M. Szala, Jerzy Smyrski, K. Lapidus, D. Wójcik, and O. V. Fateev

Subjects
Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Hadron, 01 natural sciences, ddc, Nuclear physics, Pion, 0103 physical sciences, Transverse mass, Rapidity, Impact parameter, Multiplicity (chemistry), 010306 general physics, Nucleon, Centrality
Abstract

We present high-statistic data on charged-pion emission from Au + Au collisions at $$\sqrt{s_{\mathrm{NN}}} = 2.4~\hbox {GeV}$$ s NN = 2.4 GeV (corresponding to $$E_{beam} = 1.23~\hbox {A GeV}$$ E beam = 1.23 A GeV ) in four centrality classes in the range 0–40% of the most central collisions. The data are analyzed as a function of transverse momentum, transverse mass, rapidity, and polar angle. Pion multiplicity per participating nucleon decreases moderately with increasing centrality. The polar angular distributions are found to be non-isotropic even for the most central event class. Our results on pion multiplicity fit well into the general trend of the available world data, but undershoot by $$2.5~\sigma $$ 2.5 σ data from the FOPI experiment measured at slightly lower beam energy. We compare our data to state-of-the-art transport model calculations (PHSD, IQMD, PHQMD, GiBUU and SMASH) and find substantial differences between the measurement and the results of these calculations.

Published
2020

15. Proton-number fluctuations in sNN=2.4 GeV Au + Au collisions studied with the High-Acceptance DiElectron Spectrometer (HADES)

Author

H. Tsertos, N. Rathod, E. Schwab, J. Stroth, A. Sadovsky, Roman Gernhäuser, A. Kugler, A.P. Ierusalimov, L. Silva, Laura Fabbietti, S. Spies, G. Korcyl, Oliver Werner Arnold, W. Koenig, K. Nowakowski, Yu.V. Zanevsky, F. Scozzi, T. Galatyuk, J. Adamczewski-Musch, R. Lalik, A. Rustamov, V. P. Ladygin, F. Kornas, A. Lebedev, O. V. Fateev, A. Belounnas, M. Traxler, L. Chlad, P. Rodriguez-Ramos, B. W. Kolb, C. Sturm, P. Tlusty, Kirill Lapidus, V. Pechenov, Sergey V. Morozov, L. Lopes, F.F. Guber, L. Maier, A. K. Kurilkin, M. Szala, M. Böhmer, Yiannis Parpottas, E. Usenko, I. Koenig, A. Mangiarotti, Ilya Selyuzhenkov, B. Kämpfer, P. Filip, K. Pysz, T. Scheib, Alexey Kurepin, B. Kardan, O. Petukhov, J. A. Garzón, T. Hennino, A. Blanco, P. Fonte, H. Schuldes, M. Kohls, J. Siebenson, A. Rost, A. Ivashkin, B. Ramstein, S. Harabasz, C. Wendisch, M. Gumberidze, T. Matulewicz, R. Kotte, S. Spataro, Witold Przygoda, I. Fröhlich, P. Bordalo, O. Pechenova, Krzysztof Piasecki, T. Kunz, Izabela Ciepał, Jerzy Smyrski, T. Heinz, C. Höhne, J. C. Berger-Chen, J. Pietraszko, M. G. Wiebusch, Christoph Blume, M.B. Golubeva, Andrey Reshetin, V. Metag, H. Ströbele, Yu. G. Sobolev, R. H. Munzer, D. M. Mihaylov, C. Müntz, R. Holzmann, J. Markert, M. Lorenz, V. Wagner, P. Rosier, S. Maurus, Tatiana Karavicheva, S. Ramos, C. Behnke, P. K. Kurilkin, L. Naumann, Udai Pratap Singh, S. Hlavac, T. Mahmoud, A. Malige, D. Wójcik, P. Sellheim, S. P. Chernenko, P. Zumbruch, P. Salabura, J. Dreyer, Alexander Belyaev, J. Friese, J. Michel, J. Wirth, F. Seck, Eliane Epple, G. Kornakov, C. Franco, C. Deveaux, R. Greifenhagen, and O. Svoboda

Subjects
Physics, Proton, Spectrometer, 010308 nuclear & particles physics, Position and momentum space, 01 natural sciences, 7. Clean energy, Nuclear physics, Isospin, Phase space, 0103 physical sciences, Rapidity, Atomic number, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

We present an analysis of proton-number fluctuations in sNN=2.4 GeV Au197+Au197 collisions measured with the High-Acceptance DiElectron Spectrometer (HADES) at GSI Helmholtzzentrum fur Schwerionenforschung, Darmstadt. With the help of extensive detector simulations done with Isospin Quantum Molecular Dynamics (IQMD) transport model events including nuclear clusters, various nuisance effects influencing the observed proton cumulants have been investigated. Acceptance and efficiency corrections have been applied as a function of fine-grained rapidity and transverse momentum bins, as well as considering local track density dependencies. Next, the effects of volume changes within particular centrality selections have been considered and beyond-leading-order corrections have been applied to the data. The efficiency and volume-corrected proton number moments and cumulants Kn of orders n=1, 2, 3, and 4 have been obtained as a function of centrality and phase-space bin, as well as the corresponding correlators Cn. We find that the observed correlators show a power-law scaling with the mean number of protons, i.e., Cn∞«N»n, indicative of mostly long-range multiparticle correlations in momentum space. We also present a comparison of our results with Au + Au collision data obtained at the Relativistic Heavy Ion Collider (RHIC) at similar centralities but higher √sNN.

Published
2020

16. Two-pion production in the second resonance region in π−p collisions with the High-Acceptance Di-Electron Spectrometer (HADES)

Author

J. Stroth, Sergey V. Morozov, F.F. Guber, E. Schwab, B. Kämpfer, A. Sadovsky, Yiannis Parpottas, G. Korcyl, R. Lalik, O. V. Fateev, M. Böhmer, Alexey Kurepin, D. Dittert, A.P. Ierusalimov, W. Koenig, M. Gumberidze, C. Franco, H. Ströbele, V. Wagner, T. Mahmoud, A. Prozorov, P. Sellheim, S. Spataro, V. P. Ladygin, L. Silva, I. Fröhlich, H. Schuldes, Roman Gernhäuser, K. Nowakowski, J. Dreyer, A. Kugler, Alexander Belyaev, C. Müntz, C. Wendisch, Oliver Werner Arnold, T. Galatyuk, Yu.V. Zanevsky, J. Kuboś, C. Höhne, L. Lopes, T. Kunz, F. Kornas, M. G. Wiebusch, Izabela Ciepał, Piotr Salabura, C. Sturm, S. Spies, F. Scozzi, J. A. Garzón, E. T. Atomssa, L. Chlad, G. Kornakov, J. Adamczewski-Musch, L. Maier, Laura Fabbietti, J. Siebenson, B. Ramstein, P. Strzempek, M.B. Golubeva, P. Rodriguez-Ramos, P. Chudoba, J. Biernat, A. K. Kurilkin, S. Linev, A. Lebedev, B. W. Kolb, Andrey Reshetin, R. Holzmann, J. Markert, V. Metag, V. Pechenov, A. Rost, A. Belounnas, S. Maurus, T. Heinz, M. Traxler, R. H. Munzer, D. M. Mihaylov, M. Lorenz, B. Kardan, O. Petukhov, O. Vazquez-Doce, A. V. Sarantsev, C. Behnke, J. C. Berger-Chen, P. Tlusty, Kirill Lapidus, V. Mikhaylov, A. Malige, F. Seck, H. Tsertos, V. A. Nikonov, P. Zumbruch, I. Koenig, Eliane Epple, S. Harabasz, O. Pechenova, N. Rathod, J. Pietraszko, C. Deveaux, R. Greifenhagen, O. Svoboda, K. Schmidt-Sommerfeld, Udai Pratap Singh, Witold Przygoda, J. Friese, T. Scheib, C. Ungethüm, P. K. Kurilkin, L. Naumann, T. Hennino, D. Wójcik, M. Szala, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Christoph Blume, Jerzy Smyrski, S. P. Chernenko, J. Michel, and J. Wirth

Subjects
Physics, Excitation function, Particle physics, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, Nuclear Theory, Resonance, Coupling (probability), 7. Clean energy, 01 natural sciences, Baryon, Pion, 0103 physical sciences, Production (computer science), Nuclear Experiment, 010306 general physics
Abstract

Pion induced reactions provide unique opportunities for an unambiguous description of baryonic resonances and their coupling channels by means of a partial wave analysis. Using the secondary pion beam at SIS18, the two pion production in the second resonance region has been investigated to unravel the role of the $N(1520) \frac{3}{2}^-$ resonance in the intermediate $\rho$ production. Results on exclusive channels with one pion ($\pi^{-}p$) and two pions ($\pi^{+}\pi^{-}n$, $\pi^{0}\pi^{-}p$) in the final state measured in the $\pi^{-}-p$ reaction at four different pion beam momenta (0.650, 0.685, 0.733, and 0.786 GeV/c) are presented. The excitation function of the different partial waves and $\Delta\pi$, $N\sigma$ and $N\rho$ isobar configurations is obtained, using the Bonn-Gatchina partial wave analysis. The $N(1520) \frac{3}{2}^-$ resonance is found to dominate the $N\rho$ final state with the branching ratio $BR=12.2 \pm 1.9\%$.

Published
2020

17. The SiFi-CC project - Feasibility study of a scintillation-fiber-based Compton camera for proton therapy monitoring

Author

Majid Kazemi Kozani, A. Magiera, J. Kasper, Achim Stahl, Aleksandra Wrońska, R. Hetzel, R. Lalik, and K. Rusiecka

Subjects
Computer science, Fiber (computer science), Physics::Medical Physics, Biophysics, General Physics and Astronomy, range verification, Optics, proton therapy, Proton Therapy, Radiology, Nuclear Medicine and imaging, Proton therapy, Compton camera, Range (particle radiation), Scintillation, business.industry, Phantoms, Imaging, Detector, General Medicine, Proton (rocket family), prompt-gamma imaging, Gamma Rays, Feasibility Studies, Granularity, business, Monte Carlo Method, Beam (structure)
Abstract

One of the big challenges for proton therapy is the development of tools for online monitoring of the beam range, which are suited to operate in clinical conditions and can be included in the clinical practice. A Compton camera based on stacks of heavy scintillating fibers used for prompt-gamma imaging is a promising approach for this task. It provides full, three-dimensional information on the deposited dose distribution while showing a high detection efficiency and rate capability due to its high granularity. The investigation of the rate capability and detection efficiency of such a camera under clinical conditions by means of Geant4 simulations is presented along with the event construction algorithm. The results hint towards a very low pile-up rate in the detector and a relatively high detection efficiency, so that imaging of a single proton beam spot appears to be an achievable goal.

Published
2020

18. Identical pion intensity interferometry at $\sqrt{s_{\mathrm{NN}}}=2.4~\hbox {GeV}$: HADES collaboration

Author

Christoph Blume, Marek Palka, O. V. Fateev, I. Koenig, S. Harabasz, F. Seck, Ilya Selyuzhenkov, P. Tlusty, P. Strzempek, C. Franco, A. Dybczak, J. C. Berger-Chen, J. Biernat, Tatiana Karavicheva, C. Behnke, C. Wendisch, J. Dreyer, B. W. Kolb, Alexander Belyaev, B. Ramstein, L. Silva, A. Blanco, P. Fonte, S. Spataro, T. Matulewicz, S. Hlavac, Laura Fabbietti, A. Ivashkin, R. Kotte, K. Nowakowski, C. Deveaux, R. Greifenhagen, I. Fröhlich, C. Höhne, M. G. Wiebusch, T. Heinz, A. Sadovsky, O. Svoboda, P. Zumbruch, P. Salabura, H. Tsertos, E. Usenko, L. Chlad, M. Lorenz, Andrey Reshetin, L. Lopes, J. Siebenson, Joachim Stroth, Roman Gernhäuser, E. Epple, S. Maurus, A. Kugler, G. Kornakov, H. Schuldes, R. H. Munzer, D. M. Mihaylov, J. Friese, A. Rost, T. Galatyuk, F. Kornas, F. Scozzi, J. Adamczewski-Musch, E. Schwab, L. Naumann, R. Holzmann, P. Rosier, L. Maier, J. Markert, Krzysztof Piasecki, T. Kunz, S. Ramos, B. Kämpfer, S. Spies, J. A. Garzón, Witold Przygoda, G. Korcyl, R. Lalik, A.P. Ierusalimov, M. Gumberidze, T. Scheib, C. Sturm, T. Hennino, B. Kardan, M. Böhmer, A. Mangiarotti, Sergey V. Morozov, O. Petukhov, Fedor Guber, Oliver Werner Arnold, V. P. Ladygin, Yu.V. Zanevsky, S. P. Chernenko, Volker Metag, J. Michel, J. Wirth, M. B. Golubeva, P. Rodriguez-Ramos, Yu. G. Sobolev, M. Szala, C. Müntz, A. K. Kurilkin, O. Pechenova, J. Pietraszko, P. Filip, K. Lapidus, V. Pechenov, P. Bordalo, D. Wójcik, Y. Parpottas, A. Lebedev, A. Belounnas, A. B. Kurepin, M. Traxler, W. Koenig, H. Ströbele, V. Wagner, T. Mahmoud, P. Sellheim, P. K. Kurilkin, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and HADES

Subjects
Nuclear and High Energy Physics, dimension: 3, media_common.quotation_subject, interferometer, transverse momentum: low, Extrapolation, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, beam: energy, energy dependence, Nuclear physics, Pion, 0103 physical sciences, Perpendicular, correlation function, Eccentricity (behavior), 010306 general physics, Nuclear Experiment, impact parameter, media_common, pi pi, Physics, energy: high, 010308 nuclear & particles physics, Plane (geometry), Transverse plane, Correlation function (statistical mechanics), 2.4 GeV-cms/nucleon, HADES, space-time, Impact parameter
Abstract

High-statistics $$\pi ^-\pi ^-$$π-π- and $$\pi ^+\pi ^+$$π+π+ femtoscopy data are presented for Au + Au collisions at $$\sqrt{s_\mathrm{NN}} = 2.4~\hbox {GeV}$$sNN=2.4GeV, measured with HADES at SIS18/GSI. The experimental correlation functions allow the determination of the space-time extent of the corresponding emission sources via a comparison to models. The emission source, parametrized as three-dimensional Gaussian distribution, is studied in dependence on pair transverse momentum, azimuthal emission angle with respect to the reaction plane, collision centrality and beam energy. For all centralities and transverse momenta, a geometrical distribution of ellipsoidal shape is found in the plane perpendicular to the beam direction with the larger extension perpendicular to the reaction plane. For large transverse momenta, the corresponding eccentricity approaches the initial eccentricity. The eccentricity is smallest for most central collisions, where the shape is almost circular. The magnitude of the tilt angle of the emission ellipsoid in the reaction plane decreases with increasing centrality and increasing transverse momentum. All source radii increase with centrality, largely exhibiting a linear rise with the cube root of the number of participants. A substantial charge-sign difference of the source radii is found, appearing most pronounced at low transverse momentum. The extracted source parameters are consistent with the extrapolation of their energy dependence down from higher energies.

Published
2020

19. Correlated pion-proton pair emission off hot and dense QCD matter

Author

S. Spataro, I. Fröhlich, A. K. Kurilkin, R. Holzmann, J. Markert, S. Ramos, C. Franco, V. P. Ladygin, L. Lopes, H. Ströbele, V. Wagner, P. Filip, C. Wendisch, Joachim Stroth, Tatiana Karavicheva, C. Behnke, E. Usenko, O. Pechenova, O. V. Fateev, M. Böhmer, A. Mangiarotti, E. Schwab, P. Bordalo, L. Fabbietti, S. Harabasz, J. Pietraszko, A.P. Ierusalimov, Witold Przygoda, C. Deveaux, F. Kornas, C. Sturm, Y. Parpottas, H. Schuldes, R. Greifenhagen, L. Silva, O. Svoboda, K. Pysz, T. Scheib, T. Galatyuk, A. Lebedev, C. Höhne, M. G. Wiebusch, F. Scozzi, K. Nowakowski, A. Belounnas, A. B. Kurepin, M. Traxler, T. Heinz, Yu. G. Sobolev, J. Adamczewski-Musch, J. Dreyer, Alexander Belyaev, L. Naumann, H. Tsertos, B. W. Kolb, C. Müntz, J. Friese, Izabela Ciepał, P. Zumbruch, P. Salabura, M. Lorenz, W. Koenig, B. Kämpfer, Sergey V. Morozov, P. K. Kurilkin, V. Pechenov, Yu.V. Zanevsky, G. Kornakov, M. B. Golubeva, P. Rodriguez-Ramos, A. Malige, G. Korcyl, R. Lalik, E. Epple, P. Rosier, L. Maier, S. Hlavac, J. A. Garzón, Udai Pratap Singh, J. C. Berger-Chen, F. Seck, M. Kohls, J. Siebenson, S. Maurus, M. Gumberidze, Roman Gernhäuser, A. Kugler, I. Koenig, Ilya Selyuzhenkov, S. Spies, L. Chlad, N. Rathod, B. Kardan, O. Petukhov, Fedor Guber, Oliver Werner Arnold, B. Ramstein, T. Matulewicz, A. Sadovsky, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Christoph Blume, M. Szala, T. Mahmoud, P. Sellheim, A. Rost, Jerzy Smyrski, K. Lapidus, T. Hennino, D. Wójcik, S. P. Chernenko, Volker Metag, J. Michel, J. Wirth, Krzysztof Piasecki, T. Kunz, P. Tlusty, Andrey Reshetin, R. H. Munzer, D. M. Mihaylov, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)

Subjects
energy [excited state], Proton, Freezeout, transverse momentum dependence, 01 natural sciences, energy [hadron], Invariant mass, heavy-ion reactions, Nuclear Experiment (nucl-ex), Nuclear Experiment, mass [Delta(1232)], Physics, Baryonic resonances, Heavy-ion reactions, education.field_of_study, fireball, Breit-Wigner, hadron: energy, pi p: correlation, kinetic [energy], ddc, Isospin, Nucleon, Nuclear and High Energy Physics, 2.42 GeV-cms/nucleon, QC1-999, Population, correlation [pi p], FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], transverse momentum, Kinetic energy, Nuclear physics, isospin, Pion, 0103 physical sciences, Delta(1232): mass, matter [quantum chromodynamics], ddc:530, 010306 general physics, education, quantum chromodynamics: matter, energy: kinetic, 010308 nuclear & particles physics, background, excited state: energy, rapidity, HADES, freezeout, Energy (signal processing)
Abstract

In this letter we report the first multi-differential measurement of correlated pion-proton pairs from 2 billion Au+Au collisions at \sqrt{s_{NN}} = 2.42 GeV collected with HADES. In this energy regime the population of \Delta(1232) resonances plays an important role in the way energy is distributed between intrinsic excitation energy and kinetic energy of the hadrons in the fireball. The triple differential d3N/dM{\pi}pdpTdy distributions of correlated {\pi}p pairs have been determined by subtracting the {\pi}p combinatorial background using an iterative method. The invariant-mass distributions in the \Delta(1232) mass region show strong deviations from a Breit-Wigner function with vacuum width and mass. The yield of correlated pion-proton pairs exhibits a complex isospin, rapidity and transverse-momentum dependence. In the invariant mass range 1.1 < Minv (GeV/c2) < 1.4, the yield is found to be similar for {\pi}+p and {\pi}-p pairs, and to follow a power law ^{\alpha}, where is the mean number of participating nucleons. The exponent {\alpha} depends strongly on the pair transverse momentum (pT) while its pT-integrated and charge-averaged value is {\alpha} = 1.5 \pm 0.08stat \pm 0.2sys., Comment: 9 pages, 9 figures

Published
2020
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20. Low Gain Avalanche Detectors for the HADES reaction time (T$_0$) detector upgrade

Author

Christian Schmidt, M. Traxler, K. Sumara, W. Koenig, Ch. Wendisch, M. Träger, Michal Koziel, T. Galatyuk, V. Kedych, S. Moneta, J. Pietraszko, S. Linev, R. Lalik, W. Krüger, M. Kis, A. Rost, J. Michel, A. Schemm, Laboratoire de physique subatomique et des technologies associées (SUBATECH), Université de Nantes - UFR des Sciences et des Techniques (UN UFR ST), Université de Nantes (UN)-Université de Nantes (UN)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-IMT Atlantique Bretagne-Pays de la Loire (IMT Atlantique), and Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT)

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Proton, Physics::Instrumentation and Detectors, Hadron, Nuclear Theory, FOS: Physical sciences, irradiation [p], [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 7. Clean energy, 01 natural sciences, Timing detectors, law.invention, Nuclear physics, design [semiconductor detector], Pion, LGAD, UFSD, law, 0103 physical sciences, Nuclear fusion, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det], Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, time resolution, p: irradiation, Physics, Spectrometer, 010308 nuclear & particles physics, Detector, Instrumentation and Detectors (physics.ins-det), Synchrotron, Upgrade, HADES, 13. Climate action, avalanche, Silicon detectors, Physics::Accelerator Physics, Avalanche multiplication, performance, semiconductor detector: design
Abstract

Low Gain Avalanche Detector (LGAD) technology has been used to design and construct prototypes of time-zero detector for experiments utilizing proton and pion beams with High Acceptance Di-Electron Spectrometer (HADES) at GSI Darmstadt, Germany. LGAD properties have been studied with proton beams at the COoler SYnchrotron (COSY) facility in J\"ulich, Germany. We have demonstrated that systems based on a prototype LGAD operated at room temperature and equipped with leading-edge discriminators reach a time precision below 50 ps. The application in the HADES, experimental conditions, as well as the test results obtained with proton beams are presented., Comment: published in Eur. Phys. J. A 56, 183 (2020)

Published
2020
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21. Exploring time like tranistions in pp, πp and AA reactions with HADES

Author

Roman Gernhäuser, A. Kugler, S. Spies, P. Chudoba, Sergey V. Morozov, R. Greifenhagen, Vikram Patel, M. Lorenz, M. B. Golubeva, P. Rodriguez-Ramos, C. Müntz, P. Wintz, Krzysztof Piasecki, J. Stumm, T. Mahmoud, Christoph Blume, T. Galatyuk, B. Kardan, Burkhard Kampfer, B. Ramstein, A. Kozela, J. Dreyer, Alexander Belyaev, A. Prozorov, T. Matulewicz, O. Petukhov, J. Friese, A. Malige, US Singh, D. Dittert, A. Lebedev, A. Rost, G. Kornakov, V. Pechenov, Piotr Salabura, K. H. Kampert, A. Zhilin, S. Maurus, L. Naumann, C. Wendisch, P. Tlusty, M. Gumberidze, F. Scozzi, J. Adamczewski-Musch, F. Seck, C. Höhne, M. G. Wiebusch, A. Belounnas, Fedor Guber, S. Harabasz, M. Traxler, O. Pechenova, A.A. Weber, F. Kornas, Izabela Ciepał, S. Fateev, J. Pietraszko, M. Böhmer, A.P. Ierusalimov, K. Nowakowski, O. Svoboda, W. Koenig, S. Lebedev, Laura Fabbietti, J. Kuboś, Oleg Golosov, P. Kulesa, C. Pauly, S. Borisenko, L. Chlad, N. Rathod, W.A. Esmail, H. Ströbele, L. Ritman, P. Zumbruch, P. Salabura, Andrey Reshetin, V. Wagner, R. Holzmann, A. Blanco, I. Kres, J. Förtsch, P. Fonte, J. Markert, A. Ivashkin, R. Kotte, Gennady Lykasov, V. P. Ladygin, S. Linev, K. Pysz, B. Arnoldi-Meadows, C. Ungethüm, O. Vazquez-Doce, H. Huck, D. Pfeifer, Witold Przygoda, R. Hensch, L. Lopes, Joachim Stroth, J.-H. Otto, I. Shabanov, R. Lalik, I. Fröhlich, I. Selyuzhenkov, I. Koenig, Volker Metag, J. Michel, J. Wirth, M. Szala, Michael Dürr, Jerzy Smyrski, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and HADES

Subjects
p p: scattering, Photon, heavy ion: scattering, Meson, pi p: scattering, QC1-999, Nuclear Theory, Astrophysics::Cosmology and Extragalactic Astrophysics, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, dilepton, Nuclear physics, photon: massive, meson: coupling, 0103 physical sciences, transition: electromagnetic, ddc:530, Vector meson, 010306 general physics, Nuclear Experiment, enhancement, QCD matter, quantum chromodynamics: matter, Physics, form factor: transition, 010308 nuclear & particles physics, Scattering, Computer Science::Information Retrieval, High Energy Physics::Phenomenology, vector meson, Baryon, baryon, HADES, Excited state, High Energy Physics::Experiment, Nucleon
Abstract

NSTAR 2019, Bonn, Germany, 10 Jun 2019 - 14 Jun 2019; The European physical journal / Web of Conferences 241, 01013 (2020). doi:10.1051/epjconf/202024101013, Published by EDP Sciences, Les Ulis

Published
2020

23. Production and electromagnetic decay of hyperons: a feasibility study with HADES as a Phase-0 experiment at FAIR

Author

Burkhard Kampfer, G. Kornakov, H.P. Zbroszczyk, K. Nowakowski, O. Svoboda, J. Saraiva, R. Greifenhagen, H. Huck, L. Chlad, J. Kuboś, C. Wendisch, M. Strikhanov, J. Szewczyk, M. Wasiluk, A.A. Weber, P. Chudoba, T. Matulewicz, T. Galatyuk, M. Szala, K. Pysz, S. Linev, I. Koenig, L. Naumann, Ilya Selyuzhenkov, F. Kornas, M. Kohls, Witold Przygoda, Manfred Sobiella, Sergey V. Morozov, V. Kedych, B. Kardan, E. Schwab, T. Heinz, O. Petukhov, B. Ramstein, Krzysztof Piasecki, J. Adamczewski-Musch, A. Prozorov, F. Scozzi, M. Grunwald, J. Ritman, C. Müntz, M. Lorenz, P. Kulessa, D. Grzonka, D. Pfeifer, A. Zhilin, N. Schild, Fedor Guber, A.P. Ierusalimov, J. Friese, V. Khomyakov, V. Serdyuk, J. Regina, G. I. Lykasov, Jerzy Smyrski, N. Rathod, P. Wintz, A. Shabanov, Arkadiy Taranenko, A. Kugler, M. Gumberidze, J. Rieger, I. Fröhlich, G. Perez Andrade, A. Rost, H. Ströbele, J. Michel, B. Heybeck, S. Spies, A. Malige, A. Rustamov, B. Włoch, I. Georgadze, C. Charlotte, V. Wagner, A. Blanco, P. Fonte, Andrey Reshetin, O. Pechenova, Udai Pratap Singh, A. Ivashkin, R. Kotte, J. Pietraszko, Christoph Blume, K. Sumara, S. Reznikov, A. Kozela, Karin Schönning, S. Orfanitsky, V. Pechenov, D. Dittert, A.I. Zinchenko, W. Koenig, P. Tlusty, D.S. Borisenko, A. Derichs, C. Pauly, W.A. Esmail, S. Lebedev, V. Kozlov, C. Le Galliard, I. Kres, J. Förtsch, R. Lalik, L. Lopes, M. Imre, Joachim Stroth, M. B. Golubeva, P. Rodriguez-Ramos, J.-H. Otto, Izabela Ciepał, M. Holona, A. Lebedev, M. Traxler, Vikram Patel, J. Dreyer, Alexander Belyaev, K. H. Kampert, F. Seck, Oleg Golosov, P. Zumbruch, P. Salabura, C. Höhne, E. Zherebzova, R. Holzmann, J. Markert, V. P. Ladygin, O. V. Fateev, S. Harabasz, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), HADES, and PANDA

Subjects
Lambda(1520): electromagnetic decay, p p: scattering, Nuclear and High Energy Physics, Particle physics, hyperon: electromagnetic decay, hydrogen: liquid, Physics::Instrumentation and Detectors, polymer, Hadron, FOS: Physical sciences, Elementary particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Lambda, 01 natural sciences, Subatomär fysik, Particle decay, Subatomic Physics, 0103 physical sciences, Lambda(1405): electromagnetic decay, ddc:530, Darmstadt GSI FAIR, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, Xi-: production, Regular Article - Experimental Physics, Nuclear Physics, Heavy Ions, Hadrons, Particle and Nuclear Physics, Nuclear Fusion, p p: interaction, hydrogen: target, Physics, forward spectrometer, Sigma(1385): electromagnetic decay, energy: kinetic, 010308 nuclear & particles physics, Lambda(1405), PANDA, Hyperon, Order (ring theory), 4.5 GeV/nucleon, ddc, Baryon, HADES, Sigma(1385), upgrade, Production (computer science), High Energy Physics::Experiment, performance, acceptance
Abstract

A feasibility study has been performed in order to investigate the performance of the HADES detector to measure the electromagnetic decays of the hyperon resonances $\Sigma(1385)^0$, $\Lambda(1405)$ and $\Lambda{\Lambda}(1520)$ as well as the production of double strange baryon systems $\Xi^-$ and $\Lambda\Lambda$ in p+p reactions at a beam kinetic energy of 4.5 GeV. The existing HADES detector will be upgraded by a new Forward Detector, which extends the detector acceptance into a range of polar angles that plays a crucial role for these investigations. The analysis of each channel is preceded by a consideration of the production cross-sections. Afterwards the expected signal count rates using a target consisting of either liquid hydrogen or polyethylene are summarized., Comment: Draft prepared by Rafa{\l} Lalik, James Ritman, Piotr Salabura, 19 pages, 21 figures, 4 tables

Published
2020
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24. Strong Absorption of Hadrons with Hidden and Open Strangeness in Nuclear Matter

Author

Grzegorz Korcyl, S. P. Chernenko, V. Metag, L. Chlad, T. Hennino, O. V. Fateev, J. A. Garzón, J. Michel, T. Mahmoud, D. Dittert, L. Silva, A. Blanco, P. Fonte, P. Chudoba, M. Lorenz, Yu.V. Zanevsky, V. P. Ladygin, A. Ivashkin, J. Dreyer, Alexander Belyaev, R. Kotte, A. Prozorov, K. Nowakowski, S. Spataro, S. Linev, P. Sellheim, V. Pechenov, J. Wirth, T. Kunz, T. Heinz, T. Galatyuk, H. Tsertos, P. Zumbruch, P. Rodriguez-Ramos, J. Kuboś, C. Behnke, P. Salabura, A. Rost, S. Harabasz, H. Schuldes, I. Fröhlich, M.B. Golubeva, A. K. Kurilkin, M. Szala, Sergey V. Morozov, P. Tlusty, Kirill Lapidus, O. Vazquez Doce, T. Scheib, V. Mikhaylov, Christoph Blume, H. Ströbele, Izabela Ciepał, L. Maier, O. Pechenova, A. Malige, B. Kämpfer, V. Wagner, W. Koenig, F. Seck, L. Lopes, Andrey Reshetin, Yiannis Parpottas, J. Pietraszko, C. Ungethüm, S. Maurus, Oliver Werner Arnold, Eliane Epple, M. Gumberidze, C. Höhne, M. G. Wiebusch, C. Wendisch, R. H. Munzer, D. M. Mihaylov, Roman Gernhäuser, Alexey Kurepin, A. Kugler, E. T. Atomssa, Jerzy Smyrski, B. Ramstein, S. Spies, J. Siebenson, E. Schwab, B. Kardan, Laura Fabbietti, C. Müntz, O. Petukhov, A. Sadovsky, P. Strzempek, J. Biernat, R. Holzmann, N. Rathod, J. Stroth, J. Markert, A.P. Ierusalimov, P. K. Kurilkin, R. Lalik, A. Lebedev, F. Kornas, A. Belounnas, M. Traxler, F.F. Guber, M. Böhmer, Catalina Curceanu, B. W. Kolb, F. Scozzi, J. Adamczewski-Musch, Alessandro Scordo, I. Koenig, J. C. Berger-Chen, G. Kornakov, C. Franco, C. Deveaux, R. Greifenhagen, O. Svoboda, K. Schmidt-Sommerfeld, J. Friese, Witold Przygoda, K. Piscicchia, L. Naumann, D. Wójcik, C. Sturm, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), HADES, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
Meson, Hadron, FOS: Physical sciences, General Physics and Astronomy, Strangeness, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], meson, 01 natural sciences, Nuclear physics, Momentum, strangeness, K-: absorption, 0103 physical sciences, strong coupling, Nuclear Experiment (nucl-ex), 010306 general physics, Absorption (electromagnetic radiation), Nuclear Experiment, Physics, nucleus, hadron: absorption, Coupling (probability), Nuclear matter, Neutron star, Automatic Keywords, HADES, nuclear matter, beam: momentum, Elementary Particles and Fields, acceptance
Abstract

We present the first observation of K- and \phi absorption within nuclear matter by means of \pi- -induced reactions on C and W targets at an incident beam momentum of 1.7 GeV/c studied with HADES at SIS18/GSI. The double ratio (K-/K+)W / (K-/K+)C is found to be 0.319 \pm 0.009(stat)+0.014-0.012 (syst) indicating a larger absorption of K- in heavier targets as compared to lighter ones. The measured \phi/K- ratios in \pi-+C and \pi^- +W reactions within the HADES acceptance are found to be equal to $0.55 \pm 0.03(stat)+0.06-0.07$ (syst) and to $0.63 \pm 0.05(stat)-0.11+0.11$ (syst), respectively. The similar ratios measured in the two different reactions demonstrate for the first time experimentally that the dynamics of the \phi meson in nuclear medium is strongly coupled to the K- dynamics. The large difference in the \phi production off C and W nuclei is discussed in terms of a strong \phiN in-medium coupling., Comment: 6 pages, 3 figures

Published
2019

25. Time-like baryon transitions studies with HADES

Author

A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, V. Kushpil, C. Wendisch, A. Lebedev, P. Wintz, L. Silva, S. Morozov, K. Nowakowski, A. Belounnas, A. B. Kurepin, J. Kuboś, Manfred Sobiella, C. Müntz, M. Traxler, C. Deveaux, P. Tlusty, R. Greifenhagen, E. Schwab, Christoph Blume, S. Spataro, Arkadiy Taranenko, V. Mikhaylov, T. Heinz, H. Tsertos, I. Fröhlich, O. Svoboda, M. Liu, A.I. Zinchenko, B. Kardan, F. Kornas, A. Kozela, D. Pfeifer, K. H. Kampert, B. Kämpfer, R. Lalik, O. Petukhov, M. Lorenz, V. Pechenov, B. Włoch, L. Lopes, M. Gumberidze, A.P. Ierusalimov, T. Galatyuk, F. Seck, W. Koenig, C. Pauly, P. K. Kurilkin, Fedor Guber, Joachim Stroth, P. Chudoba, S. Harabasz, C. Franco, L. Naumann, P. Bordalo, Oliver Werner Arnold, M. Zuschke, Laura Fabbietti, R. Holzmann, H. Schuldes, J. Pietraszko, J. Markert, T. Hennino, I. Koenig, Vikram Patel, Andrey Reshetin, D. Dittert, Roman Gernhäuser, G. Kornakov, A. Kugler, Ilya Selyuzhenkov, Grzegorz Korcyl, V. Khomyakov, Y. Parpottas, S. Ramos, D. M. Mihaylov, M. Kajetanowicz, L. Chlad, Anna Carolina Toledo da Cunha Pereira, M. Böhmer, J. Dreyer, Alexander Belyaev, Izabela Ciepał, V. Petousis, S. Spies, A. Rost, V. P. Ladygin, S. Linev, Witold Przygoda, A. Gillitzer, L. Ritman, P. Zumbruch, O. V. Fateev, Victor Ivanov, P. Salabura, A. Zhilin, T. Kunz, H. Ströbele, B. Ramstein, F. Scozzi, M. B. Golubeva, Gennady Lykasov, J. Adamczewski-Musch, P. Rodriguez-Ramos, A. Sadovsky, M. Himmelreich, V. Wagner, C. Höhne, T. Mahmoud, M. G. Wiebusch, J. Friese, P. Sellheim, S. Maurus, P. Strzempek, J. Biernat, J. A. Garzón, Tatiana Karavicheva, A. Troyan, K. Pysz, T. Scheib, B. Arnoldi-Meadows, Volker Metag, J. Michel, J. Wirth, O. Pechenova, M. Szala, Jerzy Smyrski, Alexander Malakhov, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), HADES, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
p p: scattering, Meson, QC1-999, Nuclear Theory, off-shell, hyperon, 01 natural sciences, Resonance (particle physics), electron: pair production, Nuclear physics, transition: electromagnetic, 0103 physical sciences, Elementary reaction, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], talk: Krakow 2018/06/07, ddc:530, structure, pi: beam, Vector meson, Nuclear Experiment, 010306 general physics, Physics, Range (particle radiation), 1-3.5 GeV-cms/nucleon, 010308 nuclear & particles physics, nucleon, Hyperon, matter: effect, vector meson, Darmstadt Lab, Baryon, HADES, kinematics, baryon resonance: production, Physics::Accelerator Physics, High Energy Physics::Experiment, Nucleon, experimental results
Abstract

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.

Published
2019

26. Probing dense baryon-rich matter with virtual photons

Author

I. Koenig, J. Dreyer, Alexander Belyaev, Yiannis Parpottas, Christian Sturm, Alexey Kurepin, M. Szala, Andrey Reshetin, Christoph Blume, Yu.V. Zanevsky, Vladimir Pechenov, F.F. Guber, F. Seck, Eliane Epple, L. Silva, D. M. Mihaylov, A. Kugler, L. Lopes, V. P. Ladygin, K. Nowakowski, A. Mangiarotti, Joachim Stroth, S. Spies, A. Sadovsky, Laura Fabbietti, P. Rodriguez-Ramos, B. W. Kolb, A.P. Ierusalimov, V. Wagner, T. Scheib, J. Pietraszko, Olga Pechenova, H. Tsertos, M. Boehmer, C. Muentz, V. Metag, P. Rosier, P. Bordalo, R. Gernhaeuser, A. Dybczak, S. Maurus, S. Spataro, C. Hoehne, B. Ramstein, R. Muenzer, T. Mahmoud, J. C. Berger-Chen, Sergey V. Morozov, M. Lorenz, Malgorzata Gumberidze, L. Maier, D. Dittert, Tetyana Galatyuk, P. Sellheim, Oliver Werner Arnold, Behruz Kardan, H. Stroebele, R. Holzmann, S. Hlavac, A. Rost, S. Ramos, P. Salabura, G. Korcyl, J. A. Garzón, R. Lalik, A. K. Kurilkin, Yu. G. Sobolev, Jörn Adamczewski-Musch, Marek Palka, Wolfgang Koenig, Tatiana Karavicheva, Ilya Selyuzhenkov, Erwin Schwab, J. Siebenson, C. Behnke, T. Hennino, P. K. Kurilkin, P. Filip, M. G. Wiebusch, B. Kaempfer, E. Usenko, P. Strzempek, O. Petukhov, J. Biernat, A. Blanco, P. Fonte, H. Schuldes, A. Ivashkin, Torsten Heinz, L. Chlad, R. Kotte, F. Scozzi, O. V. Fateev, C. Franco, I. Froehlich, Peter Zumbruch, S. Harabasz, A. Lebedev, G. Kornakov, A. Belounnas, M. Traxler, Jochen Markert, Christian Wendisch, C. Deveaux, R. Greifenhagen, L. Naumann, O. Svoboda, Witold Przygoda, J. Friese, T. Kunz, M.B. Golubeva, P. Tlusty, Kirill Lapidus, S. P. Chernenko, J. Michel, J. Wirth, Institut de Physique Nucléaire d'Orsay (IPNO), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), HADES, and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Big Bang, radiation: electromagnetic, Photon, heavy ion: scattering, Strong interaction, General Physics and Astronomy, Virtual particle, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, 010305 fluids & plasmas, Nuclear physics, decoupling, pressure, photon: emission, 0103 physical sciences, 010306 general physics, neutron star, QCD matter, quantum chromodynamics: matter, Quantum chromodynamics, Physics, electron positron, matter: strong interaction, High Energy Physics::Phenomenology, big bang, Baryon, 13. Climate action, Quark–gluon plasma, spectral, High Energy Physics::Experiment, photon: virtual
Abstract

International audience; About 10 μs after the Big Bang, the universe was filled—in addition to photons and leptons—with strong-interaction matter consisting of quarks and gluons, which transitioned to hadrons at temperatures close to kT = 150 MeV and densities several times higher than those found in nuclei. This quantum chromodynamics (QCD) matter can be created in the laboratory as a transient state by colliding heavy ions at relativistic energies. The different phases in which QCD matter may exist depend for example on temperature, pressure or baryochemical potential, and can be probed by studying the emission of electromagnetic radiation. Electron–positron pairs emerge from the decay of virtual photons, which immediately decouple from the strong interaction, and thus provide information about the properties of QCD matter at various stages. Here, we report the observation of virtual photon emission from baryon-rich QCD matter. The spectral distribution of the electron–positron pairs is nearly exponential, providing evidence for a source of temperature in excess of 70 MeV with constituents whose properties have been modified, thus reflecting peculiarities of strong-interaction QCD matter. Its bulk properties are similar to the dense matter formed in the final state of a neutron star merger, as apparent from recent multimessenger observation.

Published
2019

27. Identical pion intensity interferometry in central Au + Au collisions at 1.23 A GeV

Author

I. Koenig, O. V. Fateev, P. Bordalo, P. K. Kurilkin, Laura Fabbietti, B. Kämpfer, Y. Parpottas, C. Deveaux, R. Greifenhagen, E. Usenko, O. Svoboda, A. Dybczak, Yu.V. Zanevsky, J. C. Berger-Chen, R. Lalik, Roman Gernhäuser, C. Wendisch, M. Gumberidze, H. Schuldes, O. Pechenova, A. Kugler, R. Holzmann, J. Markert, B. Ramstein, G. Kornakov, P. Tlusty, S. Ramos, T. Galatyuk, J. Dreyer, Alexander Belyaev, F. Scozzi, A. Blanco, P. Fonte, M. B. Golubeva, S. P. Chernenko, S. Spataro, I. Fröhlich, P. Rodriguez-Ramos, A. Ivashkin, A. Lebedev, R. Kotte, J. Pietraszko, V. P. Ladygin, S. Spies, Volker Metag, L. Naumann, P. Rosier, Witold Przygoda, L. Maier, M. Böhmer, A. Mangiarotti, C. Höhne, M. G. Wiebusch, A. K. Kurilkin, E. Epple, L. Lopes, S. Maurus, J. Michel, L. Silva, Joachim Stroth, F. Seck, A. Belounnas, A. B. Kurepin, J. Friese, C. Franco, M. Traxler, K. Nowakowski, B. W. Kolb, M. Lorenz, C. Sturm, S. Hlavac, P. Filip, A. Rost, J. Adamczewski-Musch, S. Morozov, J. Wirth, T. Mahmoud, J. Siebenson, E. Schwab, P. Strzempek, M. Szala, J. A. Garzón, Andrey Reshetin, P. Sellheim, J. Biernat, A.P. Ierusalimov, R. H. Munzer, D. M. Mihaylov, T. Scheib, T. Heinz, W. Koenig, P. Zumbruch, P. Salabura, Tatiana Karavicheva, C. Behnke, Krzysztof Piasecki, T. Kunz, H. Ströbele, Christoph Blume, V. Wagner, K. Lapidus, D. Wójcik, I. Selyuzhenkov, H. Tsertos, B. Kardan, Marek Palka, O. Petukhov, S. Harabasz, Fedor Guber, T. Hennino, Oliver Werner Arnold, Grzegorz Korcyl, L. Chlad, T. Matulewicz, A. Sadovsky, Yu. G. Sobolev, C. Müntz, V. Pechenov, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), HADES, and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)

Subjects
correlation: two-particle, Nuclear and High Energy Physics, heavy ion: scattering, dimension: 3, Gaussian, interferometer, transverse momentum: low, potential: Coulomb, Extrapolation, pi, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, Computer Science::Digital Libraries, energy dependence, Nuclear physics, symbols.namesake, Pion, Correlation function, 0103 physical sciences, correlation function: two-particle, Nuclear Experiment (nucl-ex), 010306 general physics, Nuclear Experiment, energy: low, Physics, 010308 nuclear & particles physics, Radius, Hanbury-Brown-Twiss effect, lcsh:QC1-999, Intensity (physics), Interferometry, HADES, symbols, lcsh:Physics, Excitation, experimental results
Abstract

We investigate identical pion HBT intensity interferometry for central Au+Au collisions at 1.23A GeV. High-statistics $\pi^-\pi^-$ and $\pi^+\pi^+$ data are measured with HADES at SIS18/GSI. The radius parameters, derived from the correlation function depending on relative momenta in the longitudinal-comoving system and parametrized as three-dimensional Gaussian distribution, are studied as function of transverse momentum. A substantial charge-sign difference of the source radii is found, particularly pronounced at low transverse momentum. The extracted Coulomb-corrected source parameters agree well with a smooth extrapolation of the center-of-mass energy dependence established at higher energies, extending the corresponding excitation functions down towards a very low energy. Our data would thus rather disfavour any strong energy dependence of the radius parameters in the low energy region., Comment: 7 pages, 5 figures, updated author and grant lists

Published
2019

29. HADES Collaboration

Author

J. Adamczewski-Musch, A. Belyaev, A. Blanco, C. Blume, M. Böhmer, C. Asal, L. Chlad, P. Chudoba, I. Ciepał, D. Dittert, J. Dreyer, W.A. Esmail, L. Fabbietti, O. Fateev, P. Fonte, J. Friese, I. Fröhlich, J. Förtsch, T. Galatyuk, R. Gernhäuser, O. Golosov, M. Golubeva, R. Greifenhagen, M. Grunwald, D. Grzonka, F. Guber, M. Gumberidze, S. Harabasz, B. Heybeck, C. Höhne, R. Holzmann, H. Huck, A. Ierusalimov, A. Ivashkin, B. Kämpfer, K-H. Kampert, B. Kardan, V. Kedych, V. Khomyakov, I. Koenig, W. Koenig, M. Kohls, G. Korcyl, G. Kornakov, F. Kornas, R. Kotte, A. Kozela, I. Kres, W. Krueger, J. Kuboś, A. Kugler, P. Kulessa, V. Ladygin, R. Lalik, A. Lebedev, S. Lebedev, S. Linev, L. Lopes, M. Lorenz, G. Lykasov, A. Malige, J. Markert, T. Matulewicz, S. Maurus, V. Metag, J. Michel, S. Morozov, C. Müntz, L. Naumann, K. Nowakowski, J.-H. Otto, V. Patel, C. Pauly, V. Pechenov, O. Pechenova, G.P. Perez Andrade, O. Petukhov, D. Pfeifer, K. Piasecki, J. Pietraszko, A. Prozorov, W. Przygoda, K. Pysz, B. Ramstein, N. Rathod, A. Reshetin, S. Reznikov, J. Ritman, P. Rodriguez-Ramos, A. Rost, A. Rustamov, P. Salabura, J. Saraiva, N. Schild, F. Scozzi, F. Seck, I. Selyuzhenkov, A. Shabanov, U. Singh, J. Smyrski, S. Spies, M. Strikhanov, H. Ströbele, J. Stroth, K. Sumara, O. Svoboda, M. Szala, J. Szewczyk, A. Taranenko, P. Tlusty, M. Traxler, V. Wagner, M. Wasiluk, A.A. Weber, C. Wendisch, P. Wintz, J. Wirth, B. Włoch, H.P. Zbroszczyk, E. Zherebzova, A. Zhilin, A. Zinchenko, and P. Zumbruch

Subjects
Nuclear and High Energy Physics
Published
2021

30. Reconstruction of γγ mass spectra in Ag+Ag collisions at 1.23 and 1.58 AGeV beam energies with ECal detector of the HADES experiment

Author

Andrey Reshetin, M. Gumberidze, Petr Chudoba, Piotr Salabura, A. Ivashkin, J. Pietraszko, T. Galatyuk, R. Lalik, S. Morozov, A. Shabanov, V. Pechenov, O. Petukhov, F. Guber, A. Prozorov, A. Rost, O. Svoboda, P. Tlusty, N. Rathod, and A. Kugler

Subjects
Physics, Nuclear physics, History, Thesaurus (information retrieval), Detector, Mass spectrum, Beam (structure), Computer Science Applications, Education
Abstract

HADES is a high acceptance di-electron spectrometer operating at SIS18, GSI, Germany aimed at study of hadron-proton, hadron-nucleus and nucleus-nucleus collisions at 1-4 AGeV beam energies. The new electromagnetic calorimeter (ECal) was added to the experimental setup in order to measure γ-quanta and thus extend its capabilities in study of π 0-, η-mesons, production of neutral hyperons and to improve electron-to-hadron separation for the partcles with momenta p > 300 MeV/c. The first data taking with the ECal detector was carried out in March 2019 when Ag+Ag collisions at 1.23 AGeV and 1.58 AGeV beam energies were studied. The methods of reconstruction of the γγ invariant mass spectra from these data are discussed. The analysis includes several steps: calibration of each module of the ECal detector, identification of γ-quanta, reconstruction of γγ invariant mass spectra and subtraction of combinatorial background. The obtained results show experimental capabilities of the new detector and, after efficiency corrections, will allow to normalize yields of other particles.

Published
2020

31. Calibration of the electromagnetic calorimeter ECal of the HADES experiment

Author

S. Morozov, M. Gumberidze, D. Borisenko, J. Pietraszko, T. Galatyuk, A. Reshetin, V. Pechenov, A. Shabanov, A. Kugler, O. Petukhov, R. Lalik, N. Rathod, Petr Chudoba, A. Ivashkin, O. Svoboda, P. Tlusty, A. Rost, A. Prozorov, Piotr Salabura, and F. Guber

Subjects
Physics, History, Physics::Instrumentation and Detectors, business.industry, Calibration (statistics), Computer Science Applications, Education, Electromagnetic calorimeter, Optics, ddc:530, High Energy Physics::Experiment, Nuclear Experiment, business
Abstract

FARNESS 2019, Genova, Italy, 20 May 2019 - 25 May 2019; Journal of physics / Conference series 1667, 012039 (2020). doi:10.1088/1742-6596/1667/1/012039, Published by IOP Publ.39969, Bristol

Published
2020

32. Development of Forward Tracker

Author

G. Korcyl, A. Malige, P. Salabura, N. Rathod, and R. Lalik

Subjects
Physics, History, Development (topology), Systems engineering, Computer Science Applications, Education
Abstract

The High Acceptence DiElectron Spectrometer has experienced many years of successful operation which revealed high capability of measuring resonance production in proton-proton and pion-proton reactions. Since many of the production channels that are crucial for the understanding of the resonance production are highly anisotropic, that a large part of the signal would be located in the most forward and backward phase space regions, a new opportunity to an upgrade to the detector for improving the phase-space acceptance in this region has been proposed. The Forward Tracker (FT) will cover the polar angle in the detector system between 0°and 6.5°, which significantly will increase the detection acceptance. The FT is in construction with the synergy with PANDA Central Tracker, and is realized by groups from Jagellionian University, FZ Jülich and LIP Coimbra. The development of the new and faster readout electronics (DAQ) to cope with higher data rates, track reconstruction and the results from the beam time at Forschungszentrum Jülich are discussed.

Published
2020

33. Characterisation of Components of a Scintillation-fiber-based Compton Camera

Author

A. Magiera, R. Lalik, K. Rusiecka, Aleksandra Wrońska, R. Hetzel, J. Kasper, and A. Stahl

Subjects
Physics, Scintillation, Optics, business.industry, General Physics and Astronomy, Fiber, Compton camera, business
Abstract

The next awaited breakthrough in proton therapy is the inclusion of the tools for online monitoring of beam range into clinical practice. Full, three-dimensional information on the deposited dose distribution can be obtained by means of prompt gamma imaging using Compton cameras. Large gamma detection efficiency and high-rate capacity can be achieved using detectors of high granularity made of a heavy scintillator. One of the possible design options is a stack of scintillating fibers. As the overall performance of such a camera depends on the position, time and energy resolution of the fibers, we investigate those properties both experimentally in measurements with a test bench as well as via Monte Carlo simulations. The obtained results point at LYSO:Ce as the best candidate for a sensitive material of a Compton camera of the discussed type.

Published
2020

34. Pressure stabilized straw tube modules for the PANDA Forward Tracker

Author

M. Kajetanowicz, Edward Lisowski, Aleksandra Wrońska, W. Migdał, P. Wintz, Piotr Salabura, A. Heczko, A. Misiak, Witold Przygoda, J. Ritman, Marek Idzik, Jerzy Smyrski, Bartłomiej Korzeniak, R. Lalik, Krzysztof Swientek, Tomasz Fiutowski, Paola Gianotti, M. Savrie, Grzegorz Korcyl, and A. Malarz

Subjects
Straw tube, 010308 nuclear & particles physics, Computer science, 0103 physical sciences, Detector, Frame (networking), Mechanical engineering, Straw, 010306 general physics, 01 natural sciences, Instrumentation, Mathematical Physics, Overpressure
Abstract

The design of straw tube detector modules developed for the PANDA Forward Tracker is presented. One module consists of 32 straws with 10 mm diameter, arranged in two staggered layers, and has a very low material budget of only 8.8⋅10^{−4}X_{0}. The overpressure of the working gas mixture of 1 bar makes the module self-supporting and enables the use of lightweight and compact support frames. Detection planes in the Forward Tracker consist of modules mounted closely, without gaps, next to each other on a support frame. A module can be mounted and dismounted from the frame without the need to remove the neighboring modules, enabling fast repairs. Technical details of the detector design and the assembly procedure of the straw tubes and the straw modules as well as results of performed tests of the modules are given.

Published
2018

35. HADES Collaboration

Author

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

Subjects
Nuclear and High Energy Physics
Published
2019

36. Δ(1232) Dalitz decay in proton-proton collisions at T=1.25 GeV measured with HADES at GSI

Author

V. Pechenov, C. Höhne, M. G. Wiebusch, O. Petukhov, T. Heinz, Christoph Blume, M. Lorenz, J. Siebenson, A. Dybczak, V. Petousis, S. Hlavac, E. Schwab, O. V. Fateev, J. C. Berger-Chen, A. Rost, L. Chlad, W. Kühn, B. Ramstein, E. Usenko, A. K. Kurilkin, H. Schuldes, P. Rosier, J. Pietraszko, S. Harabasz, A.P. Ierusalimov, B. Kämpfer, W. Koenig, A. Sadovsky, F. Scozzi, L. Lopes, Marek Palka, J. Adamczewski-Musch, J. A. Garzón, P. Filip, C. Sturm, M. Gumberidze, B. W. Kolb, Fedor Guber, E. Morinière, Yu. G. Sobolev, C. Müntz, C. Wendisch, T. Scheib, I. Koenig, P. Bordalo, T. Galatyuk, A. Lebedev, Oliver Werner Arnold, R. Holzmann, L. Naumann, M. Böhmer, A. Mangiarotti, L. Silva, J. Markert, B. Kardan, L. Maier, A. Belounnas, A. B. Kurepin, A. V. Sarantsev, M. Traxler, S. Ramos, K. Nowakowski, C. Deveaux, V. P. Ladygin, T. Hennino, Roman Gernhäuser, Yu.V. Zanevsky, A. Blanco, P. Fonte, A. Kugler, A. Ivashkin, R. Kotte, P. K. Kurilkin, M. B. Golubeva, P. Rodriguez-Ramos, Sergey V. Morozov, J. Stroth, R. Lalik, T. Liu, O. Svoboda, S. Spataro, I. Fröhlich, G. Kornakov, Andrey Reshetin, C. Franco, R. H. Munzer, D. M. Mihaylov, Grzegorz Korcyl, H. Tsertos, Laura Fabbietti, T. Kunz, P. Tlusty, Kirill Lapidus, Tatiana Karavicheva, C. Behnke, Witold Przygoda, S. P. Chernenko, Volker Metag, Yiannis Parpottas, J. Michel, J. Wirth, O. Pechenova, J. Friese, H. Ströbele, V. Wagner, T. Mahmoud, P. Sellheim, P. Strzempek, E. T. Atomssa, J. Biernat, Paolo Finocchiaro, S. Maurus, F. Seck, Eliane Epple, J. Dreyer, Alexander Belyaev, P. Zumbruch, and P. Salabura

Subjects
Physics, Quark, Particle physics, Proton, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, Nuclear Theory, Hadron, Kinetic energy, 01 natural sciences, Particle identification, Nuclear physics, Particle decay, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

We report on the investigation of Δ(1232) production and decay in proton-proton collisions at a kinetic energy of 1.25 GeV measured with HADES. Exclusive dilepton decay channels ppe+e− and ppe+e−γ have been studied and compared with the partial-wave analysis of the hadronic ppπ0 channel. They allow to access both Δ+→pπ0(e+e−γ) and Δ+→pe+e− Dalitz decay channels. The perfect reconstruction of the well-known π0 Dalitz decay serves as a proof of the consistency of the analysis. The Δ Dalitz decay is identified for the first time and the sensitivity to N-Δ transition form factors is tested. The Δ(1232) Dalitz decay branching ratio is also determined for the first time; our result is (4.19 ± 0.62 syst. ± 0.34 stat.) ×10−5, albeit with some model dependence.

Published
2017

37. pK+Λ final state: Towards the extraction of the ppK− contribution

Author

J. Wüstenfeld, C. Sturm, B. Ramstein, T. Hennino, Alexander Belyaev, B. Kämpfer, Tetyana Galatyuk, L. Lopes, M. Gumberidze, P. Cabanelas, Joachim Stroth, P. Huck, H. Schuldes, P. Tlusty, Kirill Lapidus, J. Friese, A. Sadovsky, K. Teilab, P. K. Kurilkin, J. Siebenson, G. Kornakov, W. Koenig, Y. Parpottas, R. Holzmann, J. Markert, A.P. Ierusalimov, A. Dybczak, D. Belver, J. C. Berger-Chen, T. A. Vasiliev, V. P. Ladygin, Yu.V. Zanevsky, R. Lalik, S. Lang, D. González-Díaz, C. Höhne, A. Krása, Tatiana Karavicheva, C. Behnke, S. P. Chernenko, A. Lebedev, Volker Metag, S. Spataro, I. Fröhlich, I. Koenig, J. Michel, M. B. Golubeva, Andrey Reshetin, A. B. Kurepin, A. Rustamov, H. Ströbele, M. Traxler, Marek Palka, M. Lorenz, Piotr Salabura, L. Naumann, O. V. Fateev, R. H. Munzer, O. Svoboda, A. K. Kurilkin, V. Wagner, L. Maier, B. W. Kolb, S. Harabasz, O. Pechenova, Laura Fabbietti, Fedor Guber, P. Strzempek, K. Gill, H. Kuc, L. Rehnisch, Grzegorz Korcyl, H. Tsertos, Michael Weber, Witold Przygoda, G. Agakishiev, E. Epple, S. Yurevich, A. Tarantola, E. Krebs, M. Böhmer, A. Mangiarotti, Yu. G. Sobolev, C. Müntz, A. Kugler, M. Jurkovic, J. A. Garzón, J. Pietraszko, V. Pechenov, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Christoph Blume, T. Scheib, C. Wendisch, Filip Krizek, and C. Dritsa

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Partial wave analysis, Hadron, Hyperon, Lambda baryon, 01 natural sciences, Resonance (particle physics), 0103 physical sciences, Bound state, 010306 general physics, Nucleon
Abstract

The reaction p ( @ 3.5 GeV ) + p → p + Λ + K + can be studied to search for the existence of kaonic bound states like p p K − leading to this final state. This effort has been motivated by the assumption that in p + p collisions the Λ ( 1405 ) resonance can act as a doorway to the formation of the kaonic bound states. The status of this analysis within the HADES Collaboration, with particular emphasis on the comparison to simulations, is shown in this work and the deviation method utilized by the DISTO Collaboration in a similar analysis is discussed. The outcome suggests the employment of a partial wave analysis do disentangle the different contributions to the measured p K + Λ final state.

Published
2013

38. Λpinteraction studied via femtoscopy inp+Nbreactions atsNN=3.18GeV

Author

A. Sadovsky, A.P. Ierusalimov, V. Petousis, R. Holzmann, V. P. Ladygin, A. Rost, J. Markert, S. Ramos, G. Kornakov, V. Metag, S. P. Chernenko, Christoph Blume, A. Rustamov, M. Lorenz, J. Michel, W. Koenig, C. Höhne, T. Galatyuk, C. Franco, L. Maier, C. Deveaux, J. Wüstenfeld, O. Svoboda, J. Wirth, Marek Palka, J. Friese, Eliane Epple, T. Scheib, P. K. Kurilkin, S. Spataro, I. Fröhlich, O. V. Fateev, J. Siebenson, Tatiana Karavicheva, C. Behnke, C. Wendisch, L. Silva, S. Harabasz, E. Krebs, Laura Fabbietti, B. W. Kolb, A. Lebedev, E. T. Atomssa, K. Teilab, A. Kugler, M. Traxler, A. Dybczak, J. Stroth, J. C. Berger-Chen, Witold Przygoda, T. Mahmoud, S. Hlavac, F.F. Guber, T. Hennino, A. Krása, M. Böhmer, A. Blanco, P. Fonte, A. Mangiarotti, P. Sellheim, A. Ivashkin, R. Kotte, K. Schmidt-Sommerfeld, I. Koenig, J. A. Garzón, C. Sturm, M. Jurkovic, J. Adamczewski-Musch, K. Gill, G. Korcyl, H. Ströbele, H. Kuc, R. Lalik, A. Tarantola, L. Lopes, L. Naumann, H. Schuldes, T. A. Vasiliev, B. Kämpfer, P. Strzempek, V. Wagner, J. Biernat, B. Ramstein, M. Gumberidze, B. Kardan, G. Agakishiev, Yiannis Parpottas, S. Maurus, Alexey Kurepin, Oliver Werner Arnold, P. Zumbruch, P. Salabura, V. Pechenov, O. Pechenova, J. Pietraszko, H. Tsertos, Yu. G. Sobolev, P. Tlusty, Kirill Lapidus, C. Müntz, T. Kunz, L. Rehnisch, M.B. Golubeva, Yu.V. Zanevsky, Andrey Reshetin, R. H. Munzer, P. Bordalo, and A. K. Kurilkin

Subjects
Physics, Nuclear physics, 010308 nuclear & particles physics, 0103 physical sciences, 010306 general physics, 01 natural sciences
Published
2016

39. Production of in reactions at 3.5 GeV beam energy

Author

J. Otwinowski, P. Tlusty, Kirill Lapidus, A. Dybczak, J. C. Berger-Chen, A. Krása, Burkhard Kampfer, B. Spruck, A. M. Schmah, E. Schwab, S. Lang, A.P. Ierusalimov, T. Christ, A. Rustamov, I. Iori, B. Michalska, Michael Weber, Tatiana Karavicheva, T. Hennino, H. Kuc, B. W. Kolb, R. Holzmann, J. Markert, H. Ströbele, S. Yurevich, A. Tarantola, I. Koenig, C. Wendisch, Filip Krizek, V. Pechenov, Laura Fabbietti, V. Wagner, Y. C. Pachmayer, M. Gumberidze, M. Böhmer, A. Mangiarotti, S. P. Chernenko, Tetyana Galatyuk, J. S. Lange, A. Sadovsky, Andrey Reshetin, M. Lorenz, Volker Metag, Witold Przygoda, J. Michel, G. Agakishiev, W. Kühn, Marek Palka, Yu. G. Sobolev, R. H. Munzer, Fedor Guber, O. V. Fateev, C. Müntz, Y. Parpottas, Paolo Finocchiaro, O. Pechenova, K. Teilab, M. Destefanis, J. Friese, Yu.V. Zanevsky, D. González-Díaz, J. Pietraszko, D. Belver, T. Heinz, M. B. Golubeva, A. Balanda, C. Gilardi, Roman Gernhäuser, A. Kugler, A. Blanco, J. A. Garzón, M. Jurkovic, W. Koenig, L. Naumann, R. Trebacz, L. Maier, P. Fonte, K. Kanaki, A. Ivashkin, Jehad Mousa, R. Kotte, E. Castro, P. Salabura, Alexander Belyaev, F. Dohrmann, Eliane Epple, A. B. Kurepin, C. Sturm, B. Ramstein, J. Wüstenfeld, P. Cabanelas, J. Siebenson, J. L. Boyard, L. Lopes, Joachim Stroth, R. Krücken, E. Morinière, S. Spataro, I. Fröhlich, M. Traxler, R. Lalik, T. Liu, and H. Tsertos

Subjects
Physics, Nuclear and High Energy Physics, Angular distribution, 010308 nuclear & particles physics, 0103 physical sciences, Resonance, Production (computer science), Atomic physics, 010306 general physics, Kinetic energy, 01 natural sciences, Beam energy
Abstract

We study the production of Σ ± π ∓ p K + particle quartets in p + p reactions at 3.5 GeV kinetic beam energy. The data were taken with the HADES experiment at GSI. This report evaluates the contribution of resonances like Λ ( 1405 ) , Σ ( 1385 ) 0 , Λ ( 1520 ) , Δ ( 1232 ) , N ⁎ and K ⁎ 0 to the Σ ± π ∓ p K + final state. The resulting simulation model is compared to the experimental data in several angular distributions and it shows itself as suitable to evaluate the acceptance corrections properly.

Published
2012

40. HADES Collaboration

Author

J. Adamczewski-Musch, O. Arnold, C. Behnke, A. Belounnas, A. Belyaev, J.C. Berger-Chen, J. Biernat, A. Blanco, C. Blume, M. Böhmer, P. Bordalo, S. Chernenko, L. Chlad, C. Deveaux, J. Dreyer, A. Dybczak, E. Epple, L. Fabbietti, O. Fateev, P. Filip, P. Fonte, C. Franco, J. Friese, I. Fröhlich, T. Galatyuk, J.A. Garzón, R. Gernhäuser, M. Golubeva, F. Guber, M. Gumberidze, S. Harabasz, T. Heinz, T. Hennino, S. Hlavac, C. Höhne, R. Holzmann, A. Ierusalimov, A. Ivashkin, B. Kämpfer, T. Karavicheva, B. Kardan, I. Koenig, W. Koenig, B.W. Kolb, G. Korcyl, G. Kornakov, R. Kotte, W. Kühn, A. Kugler, T. Kunz, A. Kurepin, A. Kurilkin, P. Kurilkin, V. Ladygin, R. Lalik, K. Lapidus, A. Lebedev, L. Lopes, M. Lorenz, T. Mahmoud, L. Maier, A. Mangiarotti, J. Markert, S. Maurus, V. Metag, J. Michel, D.M. Mihaylov, S. Morozov, C. Müntz, R. Münzer, L. Naumann, K.N. Nowakowski, M. Palka, Y. Parpottas, V. Pechenov, O. Pechenova, O. Petukhov, J. Pietraszko, W. Przygoda, S. Ramos, B. Ramstein, A. Reshetin, P. Rodriguez-Ramos, P. Rosier, A. Rost, A. Sadovsky, P. Salabura, T. Scheib, H. Schuldes, E. Schwab, F. Scozzi, F. Seck, P. Sellheim, J. Siebenson, L. Silva, Yu.G. Sobolev, S. Spataro, H. Ströbele, J. Stroth, P. Strzempek, C. Sturm, O. Svoboda, P. Tlusty, M. Traxler, H. Tsertos, E. Usenko, V. Wagner, C. Wendisch, M.G. Wiebusch, J. Wirth, Y. Zanevsky, and P. Zumbruch

Subjects
Nuclear and High Energy Physics
Published
2017

41. K*(892)+production in proton-proton collisions atEbeam=3.5GeV

Author

Filip Krizek, V. Metag, M. Lorenz, F.F. Guber, P. Tlusty, R. Holzmann, J. Markert, Kirill Lapidus, M. Böhmer, A. Mangiarotti, P. Cabanelas, B. W. Kolb, T. Hennino, J. L. Boyard, A. Lebedev, V. Pechenov, O. Svoboda, A. M. Schmah, S. P. Chernenko, J. Michel, Kathrin Göbel, J. Siebenson, E. Schwab, J. Friese, J. Wüstenfeld, Roman Gernhäuser, G. Kornakov, A. Sadovsky, A. Blanco, T. A. Vasiliev, M. Traxler, A. Kugler, P. Fonte, A. Ivashkin, A.P. Ierusalimov, H. Tsertos, R. Kotte, T. Kunz, A. Dybczak, V. P. Ladygin, B. Kämpfer, Oliver Werner Arnold, J. C. Berger-Chen, W. Kühn, H. Kuc, O. Pechenova, L. Naumann, M.B. Golubeva, H. Ströbele, M. Weber, O. V. Fateev, J. A. Garzón, A. Krása, A. Rustamov, Andrey Reshetin, C. Wendisch, Yu.V. Zanevsky, M. Gumberidze, M. Jurkovic, D. Belver, J. Pietraszko, V. Wagner, R. H. Munzer, D. M. Mihaylov, I. Koenig, S. Yurevich, Yiannis Parpottas, Yu. G. Sobolev, Alexey Kurepin, D. González-Díaz, L. Maier, C. Müntz, W. Koenig, C. Sturm, Witold Przygoda, T. Heinz, A. Tarantola, S. Spataro, I. Fröhlich, J. Stroth, G. Korcyl, R. Lalik, L. Lopes, R. Krücken, G. Agakishiev, Paolo Finocchiaro, Tatiana Karavicheva, P. Salabura, Laura Fabbietti, B. Spruck, I. Iori, Tetyana Galatyuk, Eliane Epple, Alexander Belyaev, Marek Palka, K. Teilab, Yvonne Chiara Pachmayer, and B. Ramstein

Subjects
Physics, Excitation function, Nuclear and High Energy Physics, Proton, 010308 nuclear & particles physics, Nuclear Theory, Hyperon, 7. Clean energy, 01 natural sciences, Resonance (particle physics), Spectral line, Nuclear physics, Cross section (physics), Excited state, 0103 physical sciences, Atomic physics, Nuclear Experiment, 010306 general physics, Spin-½
Abstract

We present results on the K∗(892)+ production in proton-proton collisions at a beam energy of E=3.5 GeV, which is hitherto the lowest energy at which this mesonic resonance has been observed in nucleon-nucleon reactions. The data are interpreted within a two-channel model that includes the three-body production of K∗(892)+ associated with the Λ or Σ hyperon. The relative contributions of both channels are estimated. Besides the total cross section σ(p+p→K∗(892)++X)=9.5±0.9-0.9+1.1±0.7μb, which adds a new data point to the excitation function of the K∗(892)+ production in the region of low excess energy, transverse momenta and angular spectra are extracted and compared with the predictions of the two-channel model. The spin characteristics of K∗(892)+ are discussed as well in terms of the spin-alignment.

Published
2015

42. SubthresholdΞ−Production in Collisions ofp(3.5 GeV)+Nb

Author

S. P. Chernenko, Volker Metag, T. Heinz, J. Michel, O. Pechenova, J. Pietraszko, Laura Fabbietti, Yu.V. Zanevsky, D. González-Díaz, M. B. Golubeva, A. Balanda, Piotr Salabura, L. Naumann, P. Tlusty, Y. Parpottas, C. Wendisch, Kirill Lapidus, C. Müntz, A. Tarantola, L. Maier, Filip Krizek, B. Spruck, Eliane Epple, R. Müntzer, Yu. G. Sobolev, T. Hennino, H. Tsertos, A. M. Schmah, S. Yurevich, Y. C. Pachmayer, Kathrin Göbel, A. Lebedev, W. Kühn, G. Kornakov, P. Cabanelas, J. Stroth, B. Ramstein, Witold Przygoda, S. Lang, I. Koenig, V. Pechenov, D. Belver, Andrey Reshetin, M. Lorenz, H. Kuc, Tatiana Karavicheva, A. B. Kurepin, M. Traxler, Alexander Belyaev, T. A. Vasiliev, B. W. Kolb, J. Friese, O. V. Fateev, Tetyana Galatyuk, J. Siebenson, M. Böhmer, A. Mangiarotti, C. Sturm, W. Koenig, E. Schwab, A.P. Ierusalimov, B. Kämpfer, A. Rustamov, J. Wüstenfeld, R. Lalik, T. Liu, J. L. Boyard, L. Lopes, M. Gumberidze, Roman Gernhäuser, R. Krücken, R. Holzmann, J. Markert, G. Agakishiev, Paolo Finocchiaro, A. Kugler, V. P. Ladygin, B. Michalska, S. Spataro, I. Fröhlich, A. Dybczak, J. C. Berger-Chen, A. Krása, J. A. Garzón, A. Blanco, P. Fonte, M. Jurkovic, A. Ivashkin, R. Kotte, Fedor Guber, Oliver Werner Arnold, Michael Weber, R. Trebacz, I. Iori, H. Ströbele, V. Wagner, K. Teilab, Marek Palka, and A. Sadovsky

Subjects
Nuclear physics, Baryon, Physics, Particle physics, Subthreshold conduction, Hyperon, General Physics and Astronomy, Heavy ion, 7. Clean energy, Beam energy
Abstract

Results on the production of the double strange cascade hyperon Ξ^{-} are reported for collisions of p(3.5 GeV)+Nb, studied with the High Acceptance Di-Electron Spectrometer (HADES) at SIS18 at GSI Helmholtzzentrum for Heavy-Ion Research, Darmstadt. For the first time, subthreshold Ξ^{-} production is observed in proton-nucleus interactions. Assuming a Ξ^{-} phase-space distribution similar to that of Λ hyperons, the production probability amounts to P_{Ξ^{-}}=[2.0±0.4(stat)±0.3(norm)±0.6(syst)]×10^{-4} resulting in a Ξ^{-}/(Λ+Σ^{0}) ratio of P_{Ξ^{-}}/P_{Λ+Σ^{0}}=[1.2±0.3(stat)±0.4(syst)]×10^{-2}. Available model predictions are significantly lower than the measured Ξ^{-} yield.

Published
2015

43. CERBEROS: A tracking system for secondary pion beams at the HADES spectrometer

Author

L. Maier, R. Lalik, Alessandro Scordo, J. Wirth, and Laura Fabbietti

Subjects
Physics, Nuclear and High Energy Physics, Spectrometer, 010308 nuclear & particles physics, business.industry, Tracking system, Tracking (particle physics), 01 natural sciences, Momentum, Nuclear physics, Data acquisition, Pion, 0103 physical sciences, Calibration, Nuclear Experiment, 010306 general physics, business, Instrumentation, Beam (structure)
Abstract

In 2014 the HADES collaboration performed two successful physics production runs with secondary pion beams. Since secondary pion beams are strongly defocussed in position and momentum, two fast tracking stations were installed along the pion beam chicane following the pion production target providing the momentum measurement of each individual pion. The momentum is reconstructed using the position information of every hit detected by the tracking stations and the beam optics transport calculation with a resolution below 0.5% playing an important role in terms of the exclusive analysis of investigated reactions. Both tracking stations consist of a double-sided silicon strip sensor with a large active area ( 10 × 10 cm 2 ) . To guarantee fast tracking, the sensors are read out with the n-XYTER ASIC chip. Due to its self-triggering architecture and local storage capability, the chip enables on-line tracking at high rates ( dN / dt > 10 6 part / s ) . The TRB3 read out board on which the trigger logic is implemented integrates the system into the HADES DAQ. In this report we are showing the results obtained during the calibration experiment with a monochromatic proton beam set at seven different momenta centred around 2.68 GeV/c. Also the excellent performance achieved during the production campaign with a pion beam are presented.

Published
2016

44. A Continuously Running High-Rate GEM-TPC for

Author

Matthew Lang, D. Soyk, S. Dørheim, S. Schwab, R. Averbeckt, J. Hehner, Ch. Höppner, S. Neubert, Christian Schmidt, Friedemann Zenke, X. Zhang, J. Voss, R. Beck, H. Angerer, Johann Zmeskal, V. Kleipa, R. Schmitz, Bernd Voss, Alexander Winnebeck, R. Lalik, L. Fabbietti, D. Walther, M. Vandenbroucke, Soumen Paul, M. Berger, I. Konorov, F. Cusanno, Y. Leifelst, R. Arora, N. Herrmannt, K. Mladen, D. Kaiser, F.V. Böhmer, J. Kunkel, B. Ketzer, and J. Weinert

Subjects
Physics, High rate, Quantum chromodynamics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Momentum (technical analysis), Antiproton beam, Annihilation rate, Atomic and Molecular Physics, and Optics
Abstract

The P ¯ ANDA fixed target experiment planned at FAIR will investigate fundamental questions of non-perturbative QCD. It makes use of a cooled antiproton beam (momentum: 1.5 to 15 GeV / c ) and will reach luminosities of up to 2 ⋅ 10 32 cm − 2 s − 1 , yielding a p ¯ p -annihilation rate of 2 ⋅ 10 7 s − 1 . One option for the central tracker of P ¯ ANDA is a cylindrical, ungated , continuously running TPC with GEM-based gas amplification stage.

Published
2011

45. AssociateK0production inp+pcollisions at 3.5 GeV: The role ofΔ(1232)++

Author

Yu. G. Sobolev, C. Müntz, G. Kornakov, I. Koenig, B. Spruck, B. Kämpfer, Filip Krizek, E. Schwab, T. Kunz, A. Sadovsky, Alexander Belyaev, I. Iori, A.P. Ierusalimov, H. Ströbele, M.B. Golubeva, A. Dybczak, M. Gumberidze, V. Wagner, J. L. Boyard, J. C. Berger-Chen, A. Krása, Andrey Reshetin, T. Heinz, A. Rustamov, R. H. Munzer, L. Lopes, R. Krücken, P. Tlusty, P. Cabanelas, Kirill Lapidus, V. P. Ladygin, B. W. Kolb, A. M. Schmah, Kathrin Göbel, Yiannis Parpottas, J. Siebenson, Alexey Kurepin, D. González-Díaz, C. Sturm, B. Ramstein, A. Tarantola, J. A. Garzón, Eliane Epple, M. Jurkovic, Marc Weber, V. Metag, T. A. Vasiliev, M. Lorenz, K. Teilab, G. Agakishiev, W. Kühn, H. Tsertos, Paolo Finocchiaro, J. Stroth, F.F. Guber, Roman Gernhäuser, M. Böhmer, A. Mangiarotti, A. Kugler, Yvonne Chiara Pachmayer, D. Belver, C. Wendisch, Marek Palka, J. Friese, T. Galatyuk, G. Korcyl, S. Yurevich, R. Lalik, L. Maier, P. Salabura, I. Fröhlich, O. V. Fateev, Witold Przygoda, T. Hennino, R. Holzmann, J. Markert, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Tatiana Karavicheva, Laura Fabbietti, Oliver Werner Arnold, H. Kuc, L. Naumann, O. Pechenova, J. Pietraszko, S. P. Chernenko, V. Pechenov, J. Michel, A. Lebedev, J. Wüstenfeld, M. Traxler, W. Koenig, and Yu.V. Zanevsky

Subjects
Physics, Nuclear physics, Event selection, Nuclear and High Energy Physics, Angular distribution, Phase space, Mass spectrum, Invariant mass, Production (computer science), Atomic physics, Kinetic energy
Abstract

An exclusive analysis of the four-body final states Λ+p+π++K0 and Σ0+p+π++K0 measured with HADES for p+p collisions at a beam kinetic energy of 3.5 GeV is presented. The analysis uses various phase space variables, such as missing mass and invariant mass distributions, in the four-particle event selection (p,π+,π+,π-) to find cross sections of the different production channels, contributions of the intermediate resonances Δ++ and Σ(1385)+, and corresponding angular distributions. A dominant resonant production is seen, where the reaction Λ+Δ+++K0 has a cross section about ten times higher (29.45±0.08-1.46+1.67±2.06μb) than the analogous nonresonant reaction (2.57±0.02-1.98+0.21±0.18μb). A similar result is obtained in the corresponding Σ0 channels with 9.26±0.05-0.31+1.41±0.65μb in the resonant and 1.35±0.02-1.35+0.10±0.09μb in the nonresonant reactions. © 2014 American Physical Society.

Published
2014

46. Opportunistic infections and AIDS malignancies early after initiating combination antiretroviral therapy in high-income countries

Author

Lodi, S. Del Amo, J. Moreno, S. Bucher, H.C. Furrer, H. Logan, R. Sterne, J. Pérez-Hoyos, S. Jarrín, I. Phillips, A. Olson, A. Van Sighem, A. Reiss, P. Sabin, C. Jose, S. Justice, A. Goulet, J. Miró, J.M. Ferrer, E. Meyer, L. Seng, R. Vourli, G. Antoniadou, A. Dabis, F. Vandenhede, M.-A. Costagliola, D. Abgrall, S. Hernán, M.A. Hernan, M. Bansi, L. Hill, T. Sabin, C. Dunn, D. Porter, K. Glabay, A. Orkin, C. Thomas, R. Jones, K. Fisher, M. Perry, N. Pullin, A. Churchill, D. Gazzard, B. Nelson, M. Asboe, D. Bulbeck, S. Mandalia, S. Clarke, J. Delpech, V. Anderson, J. Munshi, S. Post, F. Easterbrook, P. Khan, Y. Patel, P. Karim, F. Duffell, S. Gilson, R. Man, S.-L. Williams, I. Gompels, M. Dooley, D. Schwenk, A. Ainsworth, J. Johnson, M. Youle, M. Lampe, F. Smith, C. Grabowska, H. Chaloner, C. Ismajani Puradiredja, D. Bansi, L. Hill, T. Phillips, A. Sabin, C. Walsh, J. Weber, J. Kemble, C. Mackie, N. Winston, A. Leen, C. Wilson, A. Bezemer, D.O. Gras, L.A.J. Kesselring, A.M. Van Sighem, A.I. Zaheri, S. Van Twillert, G. Kortmann, W. Branger, J. Prins, J.M. Kuijpers, T.W. Scherpbier, H.J. Van Der Meer, J.T.M. Wit, F.W.M.N. Godfried, M.H. Reiss, P. Van Der Poll, T. Nellen, F.J.B. Lange, J.M.A. Geerlings, S.E. Van Vugt, M. Pajkrt, D. Bos, J.C. Van Der Valk, M. Grijsen, M.L. Wiersinga, W.J. Brinkman, K. Blok, W.L. Frissen, P.H.J. Schouten, W.E.M. Van Den Berk, G.E.L. Veenstra, J. Lettinga, K.D. Mulder, J.W. Vrouenraets, S.M.E. Lauw, F.N. Van Eeden, A. Verhagen, D.W.M. Van Agtmael, M.A. Perenboom, R.M. Claessen, F.A.P. Bomers, M. Peters, E.J.G. Richter, C. Van Der Berg, J.P. Gisolf, E.H. Schippers, E.F. Van Nieuwkoop, C. Van Elzakker, E.P. Leyten, E.M.S. Gelinck, L.B.S. Pronk, M.J.H. Bravenboer, B. Kootstra, G.J. Delsing, C.E. Sprenger, H.G. Doedens, R. Scholvinck, E.H. Van Assen, S. Bierman, W.F.W. Soetekouw, R. Ten Kate, R.W. Van Vonderen, M.G.A. Van Houte, D.P.F. Kroon, F.P. Van Dissel, J.T. Arend, S.M. De Boer, M.G.J. Jolink, H. Ter Vollaard, H.J.M. Bauer, M.P. Weijer, S. El Moussaoui, R. Lowe, S. Schreij, G. Oude Lashof, A. Posthouwer, D. Koopmans, P.P. Keuter, M. Van Der Ven, A.J.A.M. Ter Hofstede, H.J.M. Dofferhoff, A.S.M. Warris, A. Van Crevel, R. Van Der Ende, M.E. De Vries-Sluijs, T.E.M.S. Schurink, C.A.M. Nouwen, J.L. Nispen Tot Pannerden, M.H. Verbon, A. Rijnders, B.J.A. Van Gorp, E.C.M. Hassing, R.J. Smeulders, A.W.M. Hartwig, N.G. Driessen, G.J.A. Den Hollander, J.G. Pogany, K. Juttmann, J.R. Van Kasteren, M.E.E. Hoepelman, A.I.M. Mudrikova, T. Schneider, M.M.E. Jaspers, C.A.J.J. Ellerbroek, P.M. Oosterheert, J.J. Arends, J.E. Wassenberg, M.W.M. Barth, R.E. Geelen, S.P.M. Wolfs, T.F.W. Bont, L.J. Van Den Berge, M. Stegeman, A. Groeneveld, P.H.P. Alleman, M.A. Bouwhuis, J.W. Barin, F. Burty, C. Duvivier, C. Enel, P. Fredouille-Heripret, L. Gasnault, J. Khuong, M.A. Mahamat, A. Pilorgé, F. Tattevin, P. Salomon, V. Jacquemet, N. Abgrall, S. Costagliola, D. Grabar, S. Guiguet, M. Lanoy, E. Lièvre, L. Mary-Krause, M. Selinger-Leneman, H. Lacombe, J.M. Potard, V. Bricaire, F. Herson, S. Katlama, C. Simon, A. Desplanque, N. Girard, P.M. Meynard, J.L. Meyohas, M.C. Picard, O. Cadranel, J. Mayaud, C. Pialoux, G. Clauvel, J.P. Decazes, J.M. Gerard, L. Molina, J.M. Diemer, M. Sellier, P. Bentata, M. Honoré, P. Jeantils, V. Tassi, S. Mechali, D. Taverne, B. Bouvet, E. Crickx, B. Ecobichon, J.L. Matheron, S. Picard-Dahan, C. Yeni, P. Berthé, H. Dupont, C. Chandemerle, C. Mortier, E. De Truchis, P. Tisne-Dessus, D. Weiss, L. Salmon, D. Auperin, I. Gilquin, J. Roudière, L. Viard, J.P. Boué, F. Fior, R. Delfraissy, J.F. Goujard, C. Jung, C. Lesprit, Ph. Vittecoq, D. Fraisse, P. Lang, J.M. Rey, D. Beck-Wirth, G. Stahl, J.P. Lecercq, P. Gourdon, F. Laurichesse, H. Fresard, A. Lucht, F. Bazin, C. Verdon, R. Chavanet, P. Arvieux, C. Michelet, C. Choutet, P. Goudeau, A. Maître, M.F. Hoen, B. Eglinger, P. Faller, J.P. Borsa-Lebas, F. Caron, F. Reynes, J. Daures, J.P. May, T. Rabaud, C. Berger, J.L. Rémy, G. Arlet-Suau, E. Cuzin, L. Massip, P. Thiercelin Legrand, M.F. Pontonnier, G. Viget, N. Yasdanpanah, Y. Dellamonica, P. Pradier, C. Pugliese, P. Aleksandrowicz, K. Quinsat, D. Ravaux, I. Tissot-Dupont, H. Delmont, J.P. Moreau, J. Gastaut, J.A. Poizot-Martin, I. Retornaz, F. Soubeyrand, J. Galinier, A. Ruiz, J.M. Allegre, T. Blanc, P.A. Bonnet-Montchardon, D. Lepeu, G. Granet-Brunello, P. Esterni, J.P. Pelissier, L. Cohen-Valensi, R. Nezri, M. Chadapaud, S. Laffeuillade, A. Billaud, E. Raffi, F. Boibieux, A. Peyramond, D. Livrozet, J.M. Touraine, J.L. Cotte, L. Trepo, C. Strobel, M. Bissuel, F. Pradinaud, R. Sobesky, M. Cabié, A. Gaud, C. Contant, M. Aubert, V. Barth, J. Battegay, M. Bernasconi, E. Böni, J. Bucher, H.C. Burton-Jeangros, C. Calmy, A. Cavassini, M. Egger, M. Elzi, L. Fehr, J. Fellay, J. Furrer, H. Haerry, D. Fux, C.A. Gorgievski, M. Günthard, H. Hasse, B. Hirsch, H.H. Hösli, I. Kahlert, C. Kaiser, L. Keiser, O. Klimkait, T. Kovari, H. Ledergerber, B. Martinetti, G. Martinez De Tejada, B. Metzner, K. Müller, N. Nadal, D. Pantaleo, G. Rauch, A. Regenass, S. Rickenbach, M. Rudin, C. Schmid, P. Schultze, D. Schöni-Affolter, F. Schüpbach, J. Speck, R. Taffé, P. Tarr, P. Telenti, A. Trkola, A. Vernazza, P. Weber, R. Yerly, S. Casabona, J. Gallois, A. Esteve, A. Podzamczer, D. Murillas, J. Gatell, J.M. Manzardo, C. Tural, C. Clotet, B. Ferrer, E. Riera, M. Segura, F. Navarro, G. Force, L. Vilaró, J. Masabeu, A. García, I. Guadarrama, M. Cifuentes, C. Dalmau, D. Jaen, À. Agustí, C. Montoliu, A. Pérez, I. Gargoulas, F. Blanco, J.L. Garcia-Alcaide, F. Martínez, E. Mallolas, J. López-Dieguez, M. García-Goez, J.F. Sirera, G. Romeu, J. Jou, A. Negredo, E. Miranda, C. Capitan, M.C. Saumoy, M. Imaz, A. Tiraboschi, J.M. Murillo, O. Bolao, F. Peña, C. Cabellos, C. Masó, M. Vila, A. Sala, M. Cervantes, M. Jose Amengual, Ma. Navarro, M. Penelo, E. Barrufet, P. Bejarano, G. Molina, J. Guadarrama, M. Alvaro, M. Mercadal, J. Fernandez, J. Ospina, J.E. Muñoz, M.A. Caro-Murillo, A.M. Sobrino, P. Jarrín, I. Gomez Sirvent, J.L. Rodríguez, P. Aleman, M.R. Alonso, M.M. Lopez, A.M. Hernandez, M.I. Soriano, V. Labarga, P. Barreiro, P. Medrano, J. Rivas, P. Herrero, D. Blanco, F. Vispo, M.E. Martín, L. Ramírez, G. De Diego, M. Rubio, R. Pulido, F. Moreno, V. Cepeda, C. Hervás, Rl. Iribarren, J.A. Arrizabalaga, J. Aramburu, M.J. Camino, X. Rodrí-guez-Arrondo, F. Von Wichmann, M.A. Pascual, L. Goenaga, M.A. Gutierrez, F. Masia, M. Ramos, J.M. Padilla, S. Sanchez-Hellín, V. Bernal, E. Escolano, C. Montolio, F. Peral, Y. Berenguer, J. Lopez, J.C. Miralles, P. Cosín, J. Sanchez, M. Gutierrez, I. Ramírez, M. Padilla, B. Vidal, F. Sanjuan, M. Peraire, J. Veloso, S. Vilades, C. Lopez-Dupla, M. Olona, M. Vargas, M. Aldeguer, J.L. Blanes, M. Lacruz, J. Salavert, M. Montero, M. Cuéllar, S. De Los Santos, I. Sanz, J. Oteo, J.A. Blanco, J.R. Ibarra, V. Metola, L. Sanz, M. Pérez-Martínez, L. Sola, J. Uriz, J. Castiello, J. Reparaz, J. Arriaza, M.J. Irigoyen, C. Moreno, S. Antela, A. Casado, J.L. Dronda, F. Moreno, A. Pérez, M.J. López, D. Gutiérrez, C. Hernández, B. Pumares, M. Martí, P. García, L. Page, C. García, F. Hernández, J. Peña, A. Muñoz, L. Parra, J. Viciana, P. Leal, M. López-Cortés, L.F. Trastoy, M. Mata, R. Justice, A.C. Fiellin, D.A. Rimland, D. Jones-Taylor, C. Oursler, K.A. Titanji, R. Brown, S. Garrison, S. Rodriguez-Barradas, M. Masozera, N. Goetz, M. Leaf, D. Simberkoff, M. Blumenthal, D. Leung, J. Butt, A. Hoffman, E. Gibert, C. Peck, R. Mattocks, K. Braithwaite, S. Brandt, C. Bryant, K. Cook, R. Conigliaro, J. Crothers, K. Chang, J. Crystal, S. Day, N. Erdos, J. Freiberg, M. Kozal, M. Gandhi, N. Gaziano, M. Gerschenson, M. Good, B. Gordon, A. Goulet, J.L. Kraemer, K. Lim, J. Maisto, S. Miller, P. Mole, L. O'Connor, P. Papas, R. Robins, J.M. Rinaldo, C. Roberts, M. Samet, J. Tierney, B. Whittle, J. Babiker, A. Brettle, R. Darbyshire, J. Gilson, R. Goldberg, D. Hawkins, D. Jaffe, H. Johnson, A. McLean, K. Pillay, D. Cursley, A. Ewings, F. Fairbrother, K. Louisa Gnatiuc, S.L. Murphy, B. Douglas, G. Kennedy, N. Pritchard, J. Andrady, U. Rajda, N. Maw, R. McKernan, S. Drake, S. Gilleran, G. White, D. Ross, J. Toomer, S. Hewart, R. Wilding, H. Woodward, R. Dean, G. Heald, L. Horner, P. Glover, S. Bansaal, D. Eduards, S. Carne, C. Browing, M. Das, R. Stanley, B. Estreich, S. Magdy, A. O'Mahony, C. Fraser, P. Hayman, B. Jebakumar, S.P.R. Joshi, U. Ralph, S. Wade, A. Mette, R. Lalik, J. Summerfield, H. El-Dalil, A. France, J.A. White, C. Robertson, R. Gordon, S. McMillan, S. Morris, S. Lean, C. Vithayathil, K. McLean, L. Winter, A. Gale, D. Jacobs, S. Tayal, S. Short, L. Roberts, M. Green, S. Williams, G. Sivakumar, K. Bhattacharyya, N.D. Monteiro, E. Minton, J. Dhar, J. Nye, F. De Souza, C.B. Isaksen, A. McDonald, L. McLean, K. Franca, A. Hawkins, D. William, L. Jendrulek, I. Peters, B. Shaunak, S. El-Gadi, S. Easterbrook, P.J. Mazhude, C. Gilson, R. Johnstone, R. Fakoya, A. McHale, J. Waters, A. Kegg, S. Mitchell, S. Byrne, P. Johnson, M. Rice, P. Fidler, S. Mullaney, S.A. McCormack, S. David, D. Melville, R. Phillip, K. Balachandran, T. Mabey-Puttock, S. Sukthankar, A. Murphy, C. Wilkins, E. Ahmad, S. Tayal, S. Haynes, J. Evans, E. Ong, E. Das, R. Grey, R. Meaden, J. Bignell, C. Loay, D. Peacock, K. Girgis, M.R. Morgan, B. Palfreeman, A. Wilcox, J. Tobin, J. Tucker, L. Saeed, A.M. Chen, F. Deheragada, A. Williams, O. Lacey, H. Herman, S. Kinghorn, D. Devendra, V.S. Wither, J. Dawson, S. Rowen, D. Harvey, J. Wilkins, E. Bridgwood, A. Singh, G. Chauhan, M. Kellock, D. Young, S. Dannino, S. Kathir, Y. Rooney, G. Currie, J. Fitzgerald, M. Devendra, S. Keane, F. Booth, G. Green, T. Arumainayyagam, J. Chandramani, S. Rajamanoharan, S. Robinson, T. Curless, E. Gokhale, R. Tariq, A. Roberts, M. Williams, O. Luzzi, G. FitzGerald, M. Fairley, I. Wallis, F. Smit, E. Ward, F. Molina, J.M. Loze, B. Morlat, P. Bonarek, M. Bonnet, F. Nouts, C. Louis, I. Raffi, F. Reliquet, V. Sauser, F. Biron, C. Mounoury, O. Hue, H. Brosseau, D. Delfraissy, J.F. Goujard, C. Ghosn, J. Rannou, M.T. Bergmann, J.F. Badsi, E. Rami, A. Diemer, M. Parrinello, M. Girard, P.M. Samanon-Bollens, D. Campa, P. Tourneur, M. Desplanques, N. Livrozet, J.M. Jeanblanc, F. Chiarello, P. Makhloufi, D. Blanc, A.P. Allègre, T. Reynes, J. Baillat, V. Lemoing, V. Merle De Boever, C. Tramoni, C. Cabié, A. Sobesky, G. Abel, S. Beaujolais, V. Pialoux, G. Slama, L. Chakvetadze, C. Berrebi, V. Yeni, P. Bouvet, E. Fournier, I. Gerbe, J. Trepo, C. Koffi, K. Augustin-Normand, C. Miailhes, P. Thoirain, V. Brochier, C. Thomas, R. Souala, F. Ratajczak, M. Beytoux, J. Jacomet, C. Gourdon, F. Rouveix, E. Morelon, S. Dupont, C. Olivier, C. Lortholary, O. Dupont, B. Viard, J.P. Maignan, A. Ragnaud, J.M. Raymond, I. Leport, C. Jadand, C. Jestin, C. Longuet, P. Boucherit, S. Sereni, D. Lascoux, C. Prevoteau, F. Sobel, A. Levy, Y. Lelièvre, J.D. Lascaux, A.S. Dominguez, S. Dumont, C. Aumâitre, H. Delmas, B. Saada, M. Medus, M. Guillevin, L. Salmon, D. Tahi, T. Yazdanpanah, Y. Pavel, S. Marien, M.C. Drenou, B. Beck-Wirth, G. Beck, C. Benomar, M. Katlama, C. Tubiana, R. Ait Mohand, H. Chermak, A. Ben Abdallah, S. Bentata, M. Touam, F. Hoen, B. Drobacheff, C. Folzer, A. Massip, P. Obadia, M. Prudhomme, L. Bonnet, E. Balzarin, F. Pichard, E. Chennebault, J.M. Fialaire, P. Loison, J. Galanaud, P. Boué, F. Bornarel, D. Verdon, R. Bazin, C. Six, M. Ferret, P. Weiss, L. Batisse, D. Gonzales-Canali, G. Tisne-Dessus, D. Devidas, A. Chevojon, P. Turpault, I. Lafeuillade, A. Cheret, A. Philip, G. Morel, P. Timsit, J. Herson, S. Amirat, N. Simon, A. Brancion, C. Cabane, J. Picard, O. Tredup, J. Stein, A. Ravault, I. Chavanet, C. Buisson, M. Treuvetot, S. Choutet, P. Nau, P. Bastides, F. May, T. Boyer, L. Wassoumbou, S. Oksenhendeler, E. Gérard, L. Bernard, L. De Truchis, P. Berthé, H. Domart, Y. Merrien, D. Greder Belan, A. Gayraud, M. Bodard, L. Meudec, A. Beuscart, C. Daniel, C. Pape, E. Vinceneux, P. Simonpoli, A.M. Zeng, A. Fournier, L. Fuzibet, J.G. Sohn, C. Rosenthal, E. Quaranta, M. Dellamonica, P. Chaillou, S. Sabah, M. Audhuy, B. Schieber, A. Moreau, P. Niault, M. Vaillant, O. Huchon, G. Compagnucci, A. De Lacroix Szmania, I. Richier, L. Lamaury, I. Saint-Dizier, F. Garipuy, D. Gastaut, J.A. Drogoul, M.P. Poizot Martin, I. Fabre, G. Lambert De Cursay, G. Abraham, B. Perino, C. Lagarde, P. David, F. Roche-Sicot, J. Saraux, J.L. Leprêtre, A. Fampin, B. Uludag, A. Morin, A.S. Bletry, O. Zucman, D. Regnier, A. Girard, J.J. Quinsat, D.T. Heripret, L. Grihon, F. Houlbert, D. Ruel, M. Chemlal, K. Caron, F. Debab, Y. Tremollieres, F. Perronne, V. Lepeu, G. Slama, B. Perré, P. Miodovski, C. Guermonprez, G. Dulioust, A. Boudon, P. Malbec, D. Patey, O. Semaille, C. Deville, J. Remy, G. Béguinot, I. Galanaud, P. Boue, F. Chambrin, V. Pignon, C. Estocq, G.A. Levy, A. Delfraissy, J.F. Goujard, C. Duracinsky, M. Le Bras, P. Ngussan, M.S. Peretti, D. Medintzeff, N. Lambert, T. Segeral, O. Lezeau, P. Laurian, Y. Weiss, L. Buisson, M. Piketty, C. Karmochkine, M. Batisse, D. Eliaszewitch, M. Jayle, D. Tisne-Dessus, D. Kazatchkine, M. Leport, C. Colasante, U. Jadand, C. Jestin, C. Duval, X. Nouaouia, W. Boucherit, S. Vilde, J.L. Girard, P.M. Bollens, D. Binet, D. Diallo, B. Meyohas, M.C. Fonquernie, L. Lagneau, J.L. Salmon, D. Guillevin, L. Tahi, T. Launay, O. Pietrie, M.P. Sicard, D. Stieltjes, N. Michot, J. Sobel, A. Levy, Y. Bourdillon, F. Lascaux, A.S. Lelievre, J.D. Dumont, C. Dupont, B. Obenga, G. Viard, J.P. Maignan, A. Vittecoq, D. Escaut, L. Bolliot, C. Bricaire, F. Katlama, C. Schneider, L. Herson, S. Simon, A. Iguertsira, M. Stein, A. Tomei, C. Ravaux, I. Dhiver, C. Tissot Dupont, H. Vallon, A. Gallais, J. Gallais, H. Gastaut, J.A. Drogoul, M.P. Fabre, G. Dellamonica, P. Durant, J. Mondain, V. Perbost, I. Cassuto, J.P. Karsenti, J.M. Venti, H. Fuzibet, J.G. Rosenthal, E. Ceppi, C. Quaranta, M. Krivitsky, J.A. Bentata, M. Bouchaud, O. Honore, P. Sereni, D. Lascoux, C. Delgado, J. Rouzioux, C. Burgard, M. Boufassa, L. Peynet, J. Pérez-Hoyos, S. Del Amo, J. Alvarez, D. Monge, S. Muga, R. Sanvisens, A. Clotet, B. Tor, J. Bolao, F. Rivas, I. Vallecillo, G. Del Romero, J. Raposo, P. Rodríguez, C. Vera, M. Hurtado, I. Belda, J. Fernandez, E. Alastrue, I. Santos, C. Tasa, T. Juan, A. Trullen, J. Garcia De Olalla, P. Cayla, J. Masdeu, E. Knobel, H. Mirò, J.M. Sambeat, M.A. Guerrero, R. Rivera, E. Guerrero, R. Marco, A. Quintana, M. Gonzalez, C. Castilla, J. Guevara, M. De Mendoza, C. Zahonero, N. Ortíz, M. Paraskevis, D. Touloumi, G. Pantazis, N. Bakoyannis, G. Gioukari, V. Antoniadou, A. Papadopoulos, A. Petrikkos, G. Daikos, G. Psichogiou, M. Gargalianos-Kakolyris, P. Xylomenos, G. Katsarou, O. Kouramba, A. Ioannidou, P. Kordossis, T. Kontos, A. Lazanas, M. Chini, M. Tsogas, N. Panos, G. Paparizos, V. Leuow, K. Kourkounti, S. Sambatakou, H. Mariolis, I. Skoutelis, A. Papastamopoulos, V. Baraboutis, I. The HIV-CAUSAL Collaboration

Subjects
virus diseases
Abstract

Background: There is little information on the incidence of AIDS-defining events which have been reported in the literature to be associated with immune reconstitution inflammatory syndrome (IRIS) after combined antiretroviral therapy (cART) initiation. These events include tuberculosis, mycobacterium avium complex (MAC), cytomegalovirus (CMV) retinitis, progressive multifocal leukoencephalopathy (PML), herpes simplex virus (HSV), Kaposi sarcoma, non-Hodgkin lymphoma (NHL), cryptococcosis and candidiasis. Methods: We identified individuals in the HIV-CAUSAL Collaboration, which includes data from six European countries and the US, who were HIV-positive between 1996 and 2013, antiretroviral therapy naive, aged at least 18 years, hadCD4+ cell count and HIV-RNA measurements and had been AIDS-free for at least 1 month between those measurements and the start of follow-up. For each AIDS-defining event, we estimated the hazard ratio for no cART versus less than 3 and at least 3 months since cART initiation, adjusting for time-varying CD4+ cell count and HIV-RNA via inverse probability weighting. Results: Out of 96 562 eligible individuals (78% men) with median (interquantile range) follow-up of 31 [13,65] months, 55 144 initiated cART. The number of cases varied between 898 for tuberculosis and 113 for PML. Compared with non-cART initiation, the hazard ratio (95% confidence intervals) up to 3 months after cART initiation were 1.21 (0.90-1.63) for tuberculosis, 2.61 (1.05-6.49) for MAC, 1.17 (0.34-4.08) for CMV retinitis, 1.18 (0.62-2.26) for PML, 1.21 (0.83-1.75) for HSV, 1.18 (0.87-1.58) for Kaposi sarcoma, 1.56 (0.82-2.95) for NHL, 1.11 (0.56-2.18) for cryptococcosis and 0.77 (0.40-1.49) for candidiasis. Conclusion: With the potential exception of mycobacterial infections, unmasking IRIS does not appear to be a common complication of cART initiation in high-income countries. © 2014 Wolters Kluwer Health | Lippincott Williams & Wilkins.

Published
2014

47. Inclusive pion andηproduction inp+Nb collisions at 3.5 GeV beam energy

Author

M.B. Golubeva, B. Spruck, Yu.V. Zanevsky, J. A. Garzón, P. Tlusty, Kirill Lapidus, Andrey Reshetin, M. Jurkovic, A. M. Schmah, C. Wendisch, Kathrin Göbel, I. Koenig, Laura Fabbietti, A. Balanda, S. Lang, R. Trebacz, F.F. Guber, S. Spataro, H. Ströbele, K. Teilab, S. Yurevich, Yu. G. Sobolev, B. Kämpfer, I. Iori, G. Agakishiev, C. Sturm, I. Fröhlich, M. Böhmer, A. Mangiarotti, V. Wagner, C. Müntz, J. L. Boyard, V. Metag, M. Lorenz, T. Heinz, E. Epple, Paolo Finocchiaro, Yvonne Chiara Pachmayer, Alexander Belyaev, V. P. Ladygin, L. Maier, R. Holzmann, J. Markert, M. Gumberidze, B. W. Kolb, J. Stroth, J. Friese, T. Hennino, W. Koenig, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, Roman Gernhäuser, H. Kuc, G. Kornakov, O. V. Fateev, A. Kugler, Yiannis Parpottas, Tatiana Karavicheva, L. Naumann, V. Pechenov, P. Cabanelas, Alexey Kurepin, D. González-Díaz, Marc Weber, W. Kühn, P. Salabura, H. Tsertos, A. Tarantola, Tetyana Galatyuk, R. Lalik, T. Liu, A. Lebedev, B. Ramstein, L. Lopes, S. P. Chernenko, Filip Krizek, R. Krücken, A. Dybczak, D. Belver, J. Michel, J. C. Berger-Chen, J. Wüstenfeld, M. Traxler, A. Krása, J. Siebenson, T. A. Vasiliev, Witold Przygoda, O. Pechenova, Marek Palka, E. Schwab, A. Sadovsky, J. Pietraszko, A.P. Ierusalimov, B. Michalska, and A. Rustamov

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Nuclear Theory, Transport theory, Kinetic energy, 01 natural sciences, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, Production (computer science), Nuclear Experiment, 010306 general physics, Beam energy, Energy (signal processing)
Abstract

Data on inclusive pion and $\ensuremath{\eta}$ production measured with the dielectron spectrometer HADES in the reaction $p+{}^{93}\mathrm{Nb}$ at a kinetic beam energy of 3.5 GeV are presented. Our results, obtained with the photon-conversion method, supplement the rather sparse information on neutral-meson production in proton-nucleus reactions existing for this bombarding energy regime. The reconstructed ${e}^{+}{e}^{\ensuremath{-}}{e}^{+}{e}^{\ensuremath{-}}$ transverse-momentum and rapidity distributions are confronted with transport-model calculations, which account fairly well for both ${\ensuremath{\pi}}^{0}$ and $\ensuremath{\eta}$ production.

Published
2013

48. New data on the differential cross section of dp-elastic scattering at 2.5 GeV with HADES Detector

Author

F.F. Guber, M. Böhmer, A. Mangiarotti, B. Kämpfer, J. A. Garzón, M. Gumberidze, A. Sadovsky, Yiannis Parpottas, P. Huck, H. Schuldes, M. Jurkovic, J. Friese, C. Höhne, A. K. Kurilkin, T. A. Vasiliev, A.P. Ierusalimov, Alexey Kurepin, D. González-Díaz, D. Belver, C. Wendisch, V. Pechenov, M.B. Golubeva, L. Lopes, C. Sturm, Yu.V. Zanevsky, P. K. Kurilkin, T. Galatyuk, Piotr Salabura, L. Maier, A. Rustamov, A. Lebedev, K. Gill, H. Kuc, Andrey Reshetin, S. Yurevich, R. Holzmann, L. Naumann, M. Weber, Filip Krizek, R. H. Munzer, J. Markert, O. Pechenova, B. Ramstein, L. Rehnisch, C. Dritsa, M. Traxler, V. Metag, J. Pietraszko, M. Lorenz, P. Cabanelas, A. Tarantola, H. Ströbele, S. P. Chernenko, K. Teilab, O. V. Fateev, V. Wagner, J. Michel, Yu. G. Sobolev, A. Kugler, S. Harabasz, E. Krebs, P. Tlusty, C. Müntz, J. Wüstenfeld, Kirill Lapidus, J. Siebenson, T. Scheib, H. Tsertos, J. Stroth, Marek Palka, O. Svoboda, G. Korcyl, W. Koenig, R. Lalik, Laura Fabbietti, S. Spataro, I. Fröhlich, S. Lang, G. Kornakov, Tatiana Karavicheva, C. Behnke, Eliane Epple, Alexander Belyaev, G. Agakishiev, T. Hennino, I. Koenig, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, P. Strzempek, Christoph Blume, A. Dybczak, J. C. Berger-Chen, A. Krása, B. W. Kolb, Witold Przygoda, and V. P. Ladygin

Subjects
Physics, Elastic scattering, Nuclear physics, Spectrometer, Deuterium, Scattering, Nuclear Theory, Detector, Center of mass, Nuclear Experiment, Wave function, Kinetic energy
Abstract

New results on the differential cross section in deuteron-proton elastic scattering are obtained at the deuteron kinetic energy of 2.5 GeV with the HADES spectrometer. The angular range of 69°-125° in the center of mass system is covered. The obtained results are compared with the relativistic multiple scattering model calculation using the CD-Bonn deuteron wave function. The data at fixed scattering angles in the c.m. are in qualitative agreement with the constituent counting rules prediction.

Published
2013

49. Baryonic resonances close to theK¯Nthreshold: The case ofΣ(1385)+inppcollisions

Author

T. Hennino, C. Gilardi, Jacek Tomasz Otwinowski, Marek Palka, A. Blanco, P. Fonte, A. Ivashkin, R. Kotte, B. Kämpfer, W. Kühn, L. Lopes, J. A. Garzón, I. Koenig, R. Krücken, Yu.V. Zanevsky, Tatiana Karavicheva, E. Schwab, M. Jurkovic, M. Gumberidze, Laura Fabbietti, D. Belver, A. Sadovsky, B. Ramstein, F. Dohrmann, R. Trebacz, V. Pechenov, Andrey Reshetin, Alexander Belyaev, C. Sturm, A.P. Ierusalimov, H. Kuc, A. Balanda, K. Teilab, J. S. Lange, R. H. Munzer, S. Spataro, I. Fröhlich, R. Holzmann, J. Markert, L. Naumann, M. Weber, H. Ströbele, B. Spruck, W. Koenig, Yvonne Chiara Pachmayer, A. Dybczak, T. Galatyuk, J. C. Berger-Chen, T. Christ, C. Wendisch, V. Wagner, Eliane Epple, Jehad Mousa, O. Pechenova, L. Maier, A. Krása, S. P. Chernenko, A. Rustamov, J. Michel, J. Pietraszko, M. Destefanis, T. Heinz, I. Iori, J. Wüstenfeld, J. Stroth, Yiannis Parpottas, Roman Gernhäuser, A. Kugler, S. Yurevich, E. Morinière, Yu. G. Sobolev, Alexey Kurepin, D. González-Díaz, P. Cabanelas, C. Müntz, Kalliopi Kanaki, H. Tsertos, V. Metag, O. V. Fateev, M. Traxler, M. Lorenz, R. Lalik, T. Liu, M.B. Golubeva, P. Tlusty, B. W. Kolb, Kirill Lapidus, J. Siebenson, A. M. Schmah, E. Castro, P. Salabura, Filip Krizek, S. Lang, J. L. Boyard, G. Agakishiev, Paolo Finocchiaro, J. Friese, B. Michalska, Witold Przygoda, F.F. Guber, M. Böhmer, A. Mangiarotti, and A. Tarantola

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, 010308 nuclear & particles physics, Hyperon, Sigma, 01 natural sciences, Baryon, Angular distribution, 0103 physical sciences, Production (computer science), Invariant mass, Atomic physics, 010306 general physics, Beam energy, Bar (unit)
Abstract

We present results of an exclusive measurement of the first-excited state of the $\ensuremath{\Sigma}$ hyperon, $\ensuremath{\Sigma}{(1385)}^{+}$, produced in $p+p\ensuremath{\rightarrow}{\ensuremath{\Sigma}}^{+}+{K}^{+}+n$ at $3.5\phantom{\rule{0.28em}{0ex}}\mathrm{GeV}$ beam energy. The extracted data allow the detailed study of the invariant mass distribution of the $\ensuremath{\Sigma}{(1385)}^{+}$. The mass distribution is well described by a relativistic Breit-Wigner function with a maximum at ${m}_{0}=1383.2\ifmmode\pm\else\textpm\fi{}0.9\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}/{c}^{2}$ and a width of $40.2\ifmmode\pm\else\textpm\fi{}2.1\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}/{c}^{2}$. The exclusive production cross section comes out to be $22.27\ifmmode\pm\else\textpm\fi{}0.89\ifmmode\pm\else\textpm\fi{}1.{56}_{\ensuremath{-}2.10}^{+3.07}\phantom{\rule{0.28em}{0ex}}\ensuremath{\mu}b$. Angular distributions of the $\ensuremath{\Sigma}{(1385)}^{+}$ in different reference frames are found to be compatible with the hypothesis that $33%$ of $\ensuremath{\Sigma}{(1385)}^{+}$ result from the decay of an intermediate broad ${\ensuremath{\Delta}}^{++}$ excitation at about $2000\phantom{\rule{0.28em}{0ex}}\mathrm{MeV}/{c}^{2}$.

Published
2012

50. Determination of the Σ(1385)0/Λ(1405) ratio in p+p collisions at 3.5 GeV

Author

E. Schwab, O. V. Fateev, M. Lorenz, A. Dybczak, S. P. Chernenko, Volker Metag, J. Michel, J. C. Berger-Chen, A.P. Ierusalimov, Michael Weber, M. Böhmer, Y. V. Zanevsky, A. Krása, A. Sadovsky, A. B. Kurepin, I. Iori, H. Kuc, V. Pechenov, C. Wendisch, M. B. Golubeva, A. Balanda, J. A. Garzón, Alexander Belyaev, S. Yurevich, R. Gernhäuser, J. S. Lange, Marek Palka, E. Castro, J. Friese, T. Christ, A. Rustamov, Burkhard Kampfer, E. Morinière, Yu. G. Sobolev, Fedor Guber, I. Koenig, Tatiana Karavicheva, D. González-Díaz, L. Fabbietti, Y. Parpottas, Wolfgang Kuhn, R. Holzmann, J. Markert, I. Fröhlich, Luis Lopes, A. Kugler, M. Jurkovic, V. Wagner, H. Ströbele, A. Mangiarotti, D. Belver, C. Gilardi, Jacek Tomasz Otwinowski, J. Pietraszko, Andrey Reshetin, C. Sturm, B. W. Kolb, T. Heinz, Witold Przygoda, P. Fonte, R. Trebacz, Yvonne Chiara Pachmayer, O. Pechenova, J. L. Boyard, T. Hennino, A. Ivashkin, R. Kotte, M. Traxler, C. Müntz, B. Spruck, G. Agakishiev, F. Krizek, E. Epple, F. Dohrmann, Piotr Salabura, Paolo Finocchiaro, S. Spataro, L. Naumann, Kalliopi Kanaki, P. Cabanelas, L. Maier, A. Tarantola, A. Blanco, Tetyana Galatyuk, B. Ramstein, W. Koenig, Joachim Stroth, R. Krücken, Jehad Mousa, M. Gumberidze, J. Siebenson, M. Destefanis, H. Tsertos, P. Tlusty, Kirill Lapidus, J. Wüstenfeld, R. Lalik, K. Teilab, T. Liu, A. M. Schmah, S. Lang, and B. Michalska

Subjects
Physics, Sigma, Production (computer science), Atomic physics, Lambda
Abstract

The aim of the present analysis is to determine the relative production cross sections of the Λ(1405) and Σ(1385)0 resonances in p+p collisions at Ekin = 3.5 GeV measured with HADES. Upper and lower limits have been determined for the ratio \(\sigma_{(\Sigma(1385)^{0}+p+K^{+})}/\sigma_{(\Lambda(1405)+p+K^{+})}=0.76_{-0.26}^{+0.54}\). The knowledge of this ratio is an essential input for the analysis of the decay Λ(1405)→Σ± π ∓ , where an unambiguous separation of the Λ(1405) and Σ(1385)0 signals is not possible.

Published
2012

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