Inclusive e$^+$e$^-$ production in collisions of pions with protons and nuclei in the second resonance region of baryons

Autor: Yassine, R. Abou, Adamczewski-Musch, J., Arnold, O., Atomssa, E. T., Becker, M., Behnke, C., Berger-Chen, J. C., Blanco, A., Blume, C., Böhmer, M., Chlad, L., Chudoba, P., Ciepał, I., Deb, S., Deveaux, C., Dittert, D., Dreyer, J., Epple, E., Fabbietti, L., Fonte, P., Franco, C., Friese, J., Fröhlich, I., Förtsch, J., Galatyuk, T., Garzón, J. A., Gernhäuser, R., Greifenhagen, R., Grunwald, M., Gumberidze, M., Harabasz, S., Heinz, T., Hennino, T., Höhne, C., Hojeij, F., Holzmann, R., Idzik, M., Kämpfer, B., Kampert, K-H., Kardan, B., Kedych, V., Koenig, I., Koenig, W., Kohls, M., Kolas, J., Kolb, B. W., Korcyl, G., Kornakov, G., Kotte, R., Krueger, W., Kugler, A., Kunz, T., Lalik, R., Lapidus, K., Linev, S., Linz, F., Lopes, L., Lorenz, M., Mahmoud, T., Maier, L., Malige, A., Markert, J., Maurus, S., Metag, V., Michel, J., Mihaylov, D. M., Mikhaylov, V., Molenda, A., Müntz, C., Münzer, R., Nabroth, M., Naumann, L., Nowakowski, K., Orliński, J., Otto, J. -H., Parpottas, Y., Parschau, M., Pauly, C., Pechenov, V., Pechenova, O., Piasecki, K., Pietraszko, J., Povar, T., Prościnki, P., Prozorov, A., Przygoda, W., Pysz, K., Ramstein, B., Rathod, N., Rodriguez-Ramos, P., Rost, A., Rustamov, A., Salabura, P., Scheib, T., Schild, N., Schmidt-Sommerfeld, K., Schuldes, H., Schwab, E., Scozzi, F., Seck, F., Sellheim, P., Siebenson, J., Silva, L., Singh, U., Smyrski, J., Spataro, S., Spies, S., Stefaniak, M., Ströbele, H., Stroth, J., Sturm, C., Sumara, K., Svoboda, O., Szala, M., Tlusty, P., Traxler, M., Tsertos, H., Vazquez-Doce, O., Wagner, V., Weber, A. A., Wendisch, C., Wiebusch, M. G., Wirth, J., Wladyszewska, A, Zbroszczyk, H. P., Zherebtsova, E., Zielinski, M., Zumbruch, P.

Inclusive e$^+$e$^-$ production has been studied with HADES in $\pi^-$ + p, $\pi^-$ + C and $\pi^- + \mathrm{CH}_2$ reactions, using the GSI pion beam at $\sqrt{s_{\pi p}}$ = 1.49 GeV. Invariant mass and transverse momentum distributions have been me

Externí odkaz: http://arxiv.org/abs/2309.13357

A Curriculum-Training-Based Strategy for Distributing Collocation Points during Physics-Informed Neural Network Training

Autor: Münzer, Marcus, Bard, Chris

Publikováno v: Machine Learning and the Physical Sciences Workshop, NeurIPS 2022

Physics-informed Neural Networks (PINNs) often have, in their loss functions, terms based on physical equations and derivatives. In order to evaluate these terms, the output solution is sampled using a distribution of collocation points. However, den

Externí odkaz: http://arxiv.org/abs/2211.11396

First measurement of massive virtual photon emission from N* baryon resonances

Autor: Yassine, R. Abou, Adamczewski-Musch, J., Arnold, O., Atomssa, E. T., Becker, M., Behnke, C., Berger-Chen, J. C., Blanco, A., Blume, C., Böhmer, M., Chlad, L., Chudoba, P., Ciepał, I., Deb, S., Deveaux, C., Dittert, D., Dreyer, J., Epple, E., Fabbietti, L., Fonte, P., Franco, C., Friese, J., Fröhlich, I., Fortsch, J., Galatyuk, T., Garzón, J. A., Gernhäuser, R., Greifenhagen, R., Grunwald, M., Gumberidze, M., Harabasz, S., Heinz, T., Hennino, T., Höhne, C., Hojeij, F., Holzmann, R., Idzik, M., Kämpfer, B., Kampert, K-H., Kardan, B., Kedych, V., Koenig, I., Koenig, W., Kohls, M., Kolas, J., Kolb, B. W., Korcyl, G., Kornakov, G., Kotte, R., Krueger, W., Kugler, A., Kunz, T., Lalik, R., Lapidus, K., Linev, S., Linz, F., Lopes, L., Lorenz, M., Mahmoud, T., Maier, L., Malige, A., Markert, J., Maurus, S., Metag, V., Michel, J., Mihaylov, D. M., Mikhaylov, V., Molenda, A., Müntz, C., Münzer, R., Nabroth, M., Naumann, L., Nowakowski, K., Orliński, J., Otto, J. -H., Parpottas, Y., Parschau, M., Pauly, C., Pechenov, V., Pechenova, O., Piasecki, K., Pietraszko, J., Povar, T., Prościński, K., Prozorov, A., Przygoda, W., Pysz, K., Ramstein, B., Rathod, N., Rodriguez-Ramos, P., Rost, A., Rustamov, A., Salabura, P., Scheib, T., Schild, N., Schmidt-Sommerfeld, K., Schuldes, H., Schwab, E., Scozzi, F., Seck, F., Sellheim, P., Siebenson, J., Silva, L., Singh, U., Smyrski, J., Spataro, S., Spies, S., Stefaniak, M., Ströbele, H., Stroth, J., Sturm, C., Sumara, K., Svoboda, O., Szala, M., Tlusty, P., Traxler, M., Tsertos, H., Udrea, I. C., Vazquez-Doce, O., Wagner, V., Weber, A. A., Wendisch, C., Wiebusch, M. G., Wirth, J., Władyszewska, A., Zbroszczyk, H. P., Zherebtsova, E., Zieliński, M., Zumbruch, P., Zetenyi, M.

First information on the time-like electromagnetic structure of baryons in the second resonance region has been obtained from measurements of dielectron (e+ e-) invariant-mass and angular distributions in the quasi-free reaction $\pi-$ p $\rightarrow

Externí odkaz: http://arxiv.org/abs/2205.15914

Impact of the Coulomb field on charged-pion spectra in few-GeV heavy-ion collisions

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

In nuclear collisions the incident protons generate a Coulomb field which acts on produced charged particles. The impact of these interactions on charged pion transverse-mass and rapidity spectra, as well as on pion-pion momentum correlations is inve

Externí odkaz: http://arxiv.org/abs/2202.12750

Directed, elliptic and higher order flow harmonics of protons, deuterons and tritons in Au+Au collisions at $\sqrt{s_{NN}} = 2.4$ GeV

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

Publikováno v: Phys. Rev. Lett. 125, 262301 (2020)

Flow coefficients $v_{n}$ 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 $

Externí odkaz: http://arxiv.org/abs/2005.12217