Measurement of the $\mathrm{{}^{12}C}(e,e')$ cross sections at $Q^2=0.8\,\mathrm{GeV}^2/c^2$

Autor: Mihovilovič, M., Doria, L., Achenbach, P., Ankowski, A. M., Bacca, S., Bosnar, D., Denig, A., Distler, M. O., Esser, A., Friščić, I., Giusti, C., Hoek, M., Kegel, S., Littich, M., Megias, G. D., Merkel, H., Muller, U., Pochodzalla, J., Schlimme, B. S., Schoth, M., Sfienti, C., Širca, S., Sobczyk, J. E., Stottinger, Y., Thiel, M.

We present the findings of a study based on a new inelastic electron-scattering experiment on the ${}^{12}\mathrm{C}$ nucleus focusing on the kinematic region of $Q^2=0.8\,\mathrm{GeV}^2/{c}^2$. The measured cross section is sensitive to the transver

Externí odkaz: http://arxiv.org/abs/2406.16059

Evaluation of the E2/M1 ratio in the $N\to \Delta(1232)$ transition from the $ \vec{\gamma} \vec{p} \to p \pi^0 $ reaction

Autor: Mornacchi, E., Pedroni, P., Afzal, F., Wunderlich, Y., Abt, S., Achenbach, P., Annand, J. R. M., Arends, H. J., Bashkanov, M., Biroth, M., Beck, R., Borisov, N., Braghieri, A., Briscoe, W. J., Cividini, F., Collicott, C., Denig, A., Dolzhikov, A. S., Downie, E., Fegan, S., Fix, A., Ghosal, D., Gorodnov, I., Gradl, W., Gurevich, D., Heijkenskjoeld, L., Hornidge, D., Huber, G. M., Kashevarov, V. L., Kay, S. J. D., Korolija, M., Lazarev, A., Livingston, K., Lutterer, S., MacGregor, I. J. D., Manley, D. M., Martel, P. P., Miskimen, R., Mocanu, M., Mullen, C., Neganov, A., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Paudyal, D., Powell, A., Rostomyan, T., Sokhoyan, V., Spieker, K., Steffen, O., Strakovsky, I. I., Thiel, M., Thomas, A., Usov, Yu. A., Wagner, S., Watts, D. P., Werthmueller, D., Wettig, J., Witthauer, L., Wolfes, M., Zachariou, N.

A new data set for the helicity-dependent differential cross section of the single-meson photoproduction reaction $\gamma p \to p \pi^{0}$ was obtained for the photon energy interval 150-400 MeV. The experiment was performed at the A2 tagged photon f

Externí odkaz: http://arxiv.org/abs/2312.08211

Helicity dependent cross sections for the photoproduction of $\pi^0\pi^{\pm}$ pairs from quasi-free nucleons

Autor: A2 Collaboration, Ghosal, D., Sokhoyan, V., Fix, A., Lutterer, S., Abt, S., Achenbach, P., Afzal, F., Ahmed, Z., Annand, J. R. M., Bashkanov, M., Beck, R., Biroth, M., Borisov, N., Braghieri, A., Briscoe, W. J., Cividini, F., Collicot, C., Costanza, S., Denig, A., Dieterle, M., Dolzhikov, A. S., Downie, E. J., Drexler, P., Fegan, S., Gardner, S., Glazier, D. I., Gorodnov, I., Gradl, W., Günther, M., Gurevich, D., Heijkenskjöld, L., Hornidge, D., Huber, G. M., Jermann, N., Käser, A., Kashevarov, V. L., Korolija, M., Krusche, B., Lazarev, A., Livingston, K., MacGregor, I. J. D., Manley, D. M., Martel, P. P., Meier, Ch., Miskimen, R., Mocanu, M., Mornacchi, E., Mullen, C., Neganov, A., Neiser, A., Ostrick, M., Otte, P., Paudyal, D., Pedroni, P., Powell, A., Reicherz, G., Rostomyan, T., Spieker, K., Steffen, O., Strakovsky, I. I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Yu. A., Wagner, S., Walford, N. K., Watts, D. P., Werthmüller, D., Wettig, J., Witthauer, L., Wolfes, M., Zachariou, N.

Publikováno v: Physics Letters B, Volume 847, 10 December 2023, 138273

Photoproduction of $\pi^0\pi^{\pm}$-pairs from quasifree nucleons bound in the deuteron has been investigated to study the helicity dependence of this reaction. Measurements with a liquid deuterium target were used to extract the unpolarized cross se

Externí odkaz: http://arxiv.org/abs/2308.15240

Measurement of polarization transfer in the quasi-elastic $^{40}{\rm Ca}(\vec{e},e' \vec{p})$ process

Autor: Kolar, T., Achenbach, P., Christmann, M., Distler, M. O., Doria, L., Eckert, P., Esser, A., Giusti, C., Geimer, J., Gülker, P., Hoek, M., Klag, P., Lichtenstadt, J., Littich, M., Manoussos, T., Markus, D., Merkel, H., Mihovilovič, M., Müller, J., Müller, U., Pätschke, J., Paul, S. J., Plura, E. Piasetzky S., Pochodzalla, J., Požun, M., Ron, G., Schlimme, B. S., Sfienti, C., Stengel, S., Stephan, E., Strauch, S., Szyszka, C., Širca, S., Thiel, M., Wilczek, A.

Polarization transfer to a bound proton in polarized electron knock-out reactions, $\mathrm{A}(\vec{e},e^{\prime}\vec{p})$, is a powerful tool to look for in-medium modification of the bound proton. It requires comparison to calculations which consid

Externí odkaz: http://arxiv.org/abs/2306.05565

Machine Learning based tool for CMS RPC currents quality monitoring

Autor: Shumka, E., Samalan, A., Tytgat, M., Sawy, M. El, Alves, G. A., Marujo, F., Coelho, E. A., Da Costa, E. M., Nogima, H., Santoro, A., De Souza, S. Fonseca, Damiao, D. De Jesus, Thiel, M., Amarilo, K. Mota, Filho, M. Barroso Ferreira, Aleksandrov, A., Hadjiiska, R., Iaydjiev, P., Rodozov, M., Shopova, M., Soultanov, G., Dimitrov, A., Litov, L., Pavlov, B., Petkov, P., Petrov, A., Qian, S. J., Kou, H., Liu, Z. -A., Zhao, J., Song, J., Hou, Q., Diao, W., Cao, P., Avila, C., Barbosa, D., Cabrera, A., Florez, A., Fraga, J., Reyes, J., Assran, Y., Mahmoud, M. A., Mohammed, Y., Crotty, I., Laktineh, I., Grenier, G., Gouzevitch, M., Mirabito, L., Shchablo, K., Bagaturia, I., Lomidze, I., Tsamalaidze, Z., Amoozegar, V., Boghrati, B., Ebraimi, M., Najafabadi, M. Mohammadi, Zareian, E., Abbrescia, M., Iaselli, G., Pugliese, G., Loddo, F., De Filippis, N., Aly, R., Ramos, D., Elmetenawee, W., Leszki, S., Margjeka, I., Paesani, D., Benussi, L., Bianco, S., Piccolo, D., Meola, S., Buontempo, S., Carnevali, F., Lista, L., Paolucci, P., Fienga, F., Braghieri, A., Salvini, P., Montagna, P., Riccardi, C., Vitulo, P., Asilar, E., Choi, J., Kim, T. J., Choi, S. Y., Hong, B., Lee, K. S., Oh, H. Y., Goh, J., Yu, I., Estrada, C. Uribe, Pedraza, I., Castilla-Valdez, H., Sanchez-Hernandez, A., Fernandez, R. L., Ramirez-Garcia, M., Vazquez, E., Shah, M. A., Zaganidis, N., Radi, A., Hoorani, H., Muhammad, S., Ahmad, A., Asghar, I., Khan, W. A., Eysermans, J., De Araujo, F. Torres Da Silva

The muon system of the CERN Compact Muon Solenoid (CMS) experiment includes more than a thousand Resistive Plate Chambers (RPC). They are gaseous detectors operated in the hostile environment of the CMS underground cavern on the Large Hadron Collider

Externí odkaz: http://arxiv.org/abs/2302.02764