Measurement of Differential Cross Sections and Integrated Luminosity using Proton-Proton Elastic Scattering with HADES at T = 4.53 GeV and T = 1.60 GeV
Year: 2026
Type: preprint
Abstract: This work presents an investigation of elastic proton-proton scattering based on data collected with the recently upgraded HADES detector using beams of protons with kinetic energies of $T = 4.53$ GeV and $T = 1.60$ GeV impinging on a liquid hydrogen target. This is the first measurement emerging from the upgraded detector setup, including a Forward Detector with straw-tube tracking planes designed for the PANDA experiment. The well-constrained two-body kinematic relations of elastic scattering have been exploited to study the detector alignment, the beam alignment, and to provide the final measurement of the beam energy. In addition, the recorded luminosity of the experiment has been determined by normalizing the HADES data in a range of the squared four-momentum transfer $t$ that overlaps with measurements by previous experiments worldwide. Furthermore, the differential cross sections have been determined over a large range of $t$ from which the slope parameter $B$ is extracted, yielding $B = 8.98 \pm 0.3$ (GeV/$c$)$^{-2}$ and $7.3 \pm 0.1$ (GeV/$c$)$^{-2}$ at $T = 4.53$ GeV and $1.60$ GeV, respectively. This contribution to the world database on elastic proton-proton scattering provides input to theoretical modeling and serves as a reference for luminosity determinations by future experiments in the same energy range.
Source: arXiv (Cornell University)
Authors: HADES Collaboration, Yassine, R. Abou, Adamczewski-Musch, J., Appagere, G. A., Becker, M., Blanco, A., Blume, C., Bohman, M., Bondar, Y., Chlad, L., Ciepał, I., Deb, S., Monasterio, M. D. Doncel, Duerr, M., Esmail, W., Fabbietti, L., Firlej, M., Fiutowski, T., Foda, A. M., Förtsch, J., Fonte, P., Friese, J., Fröhlich, I., Galatyuk, T., Gernhäuser, R., Grunwald, M., Grzonka, D., Gumberidze, M., Harabasz, S., Heinz, T., Höhne, C., Hojeij, F., Holzmann, R., Idzik, M., Kämpfer, B., Kampert, K. -H., Kardan, B., Kedych, V., Kim, S., Kladov, V., Kodym, A., Kohls, M., Kolas, J., Korcyl, G., Kornakov, G., Krueger, W., Kugler, A., Lalik, R., Lebedev, S., Leontiou, T., Linev, S., Linz, F., Lopes, L., Lorenz, M., Malige, A., Marciniewski, P., Markert, J., Matulewicz, T., Messchendorp, J. G., Metag, V., Michel, J., Molenda, A., Moron, J., Müntz, C., Mukherjee, A., Nabroth, M., Op\'ıchal, A., Orliński, J., Otto, J. -H., Papenbrock, M., Parpottas, Y., Parschau, M., Pattnaik, S., Pauly, C., Pawlowska-Szymanska, D., Pechenov, V., Pechenova, O., Andrade, G. Perez, Phan, J., Piasecki, K., Pietraszko, J., Povar, T., Predota, M., Prościński, K., Prozorov, A., Przygoda, W., Ramstein, B., Rathod, N., Rieger, J. T., Ritman, J., Rost, A., Rustamov, A., Sahu, S., Salabura, P., Saraiva, J., Scharmann, K., Schild, N., Schönning, K., Schwab, E., Seck, F., Selyuzhenkov, I., Smyrski, J., Sobiella, M., Spies, S., Sreejith, A., Strach, A., Ströbele, H., Stroth, J., Subramani, P., Sumara, K., Svoboda, O., Swientek, K., Taylor, J., Tegner, P. E., Tlusty, P., Traxler, M., Treliński, S., Udrea, I. C., Ulrich-Pur, F., Wagner, V., Weber, A. A., Wendisch, C., Wielanek, D., Wintz, P., Władyszewska, A., Zbroszczyk, H. P., Zieliński, M., Zumbruch, P.
Institutions: Technische Universität Darmstadt, GSI Helmholtz Centre for Heavy Ion Research, Stockholm University, Justus-Liebig-Universität Gießen, Centre National de la Recherche Scientifique, Université Paris-Saclay, LIP - Laboratory of Instrumentation and Experimental Particle Physics, Institut National de Physique Nucléaire et de Physique des Particules, Laboratoire de Physique des 2 Infinis Irène Joliot-Curie, Uppsala University, Institute of Nuclear Physics, Polish Academy of Sciences, Czech Academy of Sciences, Czech Academy of Sciences, Nuclear Physics Institute, Czech Technical University in Prague, Technical University of Munich, AGH University of Krakow, University of Wuppertal, Universidade Politécnica de Coimbra, Goethe University Frankfurt, Warsaw University of Technology, Ruhr University Bochum, Helmholtz-Zentrum Dresden-Rossendorf, Technische Universität Dresden, Jagiellonian University, Frederick University, University of Warsaw, Charles University
Language: English
Subfield: Nuclear and High Energy Physics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: Deutsche Forschungsgemeinschaft, Bundesministerium für Bildung und Forschung, Knut och Alice Wallenbergs Stiftelse, Vetenskapsrådet, Narodowym Centrum Nauki, Centre National de la Recherche Scientifique, Technische Universität Darmstadt, Emberi Eroforrások Minisztériuma, Institut National de Physique Nucléaire et de Physique des Particules
Awards: Verbundprojekt 05P2018 (ErUM-FSP T06) - Aufbau von CBM bei FAIR: Aufbau und Inbetriebnahme einer Kalorimeter-Ausleseelektronik für HADES, G196419191, G2549944193, G296130331, G3004082049, G3197976005, G3403230537, G3613939221, G457569294, G4700745511, GSI-HADES: HADES, G6649312515, G6670173520, G7340645830, Verbundprojekt 05P2024 (ErUM-FSP T06) - Aufbau von CBM bei FAIR: Bau und Betrieb des RICH-Detektors für das CBM/HADES Experiment an FAIR und Dileptonen Analyse, Verbundprojekt 05P2024 (ErUM-FSP T06) - Aufbau von CBM bei FAIR: Bau des RICH-Detektors für das CBM/HADES Experiment an FAIR und Methodenentwicklung zur Dileptonenanalyse, G994175583
OpenAlex ID: W7208717573