Zobrazeno 1 - 10
of 563
pro vyhledávání: '"Middleton, P. G."'
Autor:
Mihovilovič, M., Weber, A. B., Achenbach, P., Bajec, M., Beranek, T., Beričič, J., Bernauer, J. C., Bosnar, D., Böhm, R., Cardinali, M., Correa, L., Debenjak, L., Denig, A., Distler, M. O., Esser, A., Bondy, M. I. Feretti, Fonvieille, H., Friedrich, J. M., Friščić, I., Griffioen, K., Hoek, M., Kegel, S., Middleton, D. G., Merkel, H., Müller, U., Nungesser, L., Pochodzalla, J., Rohrbeck, M., Majos, S. Sánchez, Schlimme, B. S., Schoth, M., Schulz, F., Sfienti, C., Širca, S., Štajner, S., Stöttinger, Y., Thiel, M., Tyukin, A., Vanderhaeghen, M., Weinriefer, M.
Radiative corrections to elastic scattering represent an important part of the interpretation of electron-induced nuclear reactions at small energy transfers, where they make for a dominant part of background. Here we present and validate a new event
Externí odkaz:
http://arxiv.org/abs/2303.12196
Autor:
Garni, S., Kashevarov, V. L., Fix, A., Abt, S., Afzal, F., Bartolome, P. Aguar, Ahmed, Z., Ahrens, J., Annand, J. R. M., Arends, H. J., Bashkanov, M., Beck, R., Biroth, M., Borisov, N., Braghieri, A., Briscoe, W. J., Cherepnya, S., Cividini, F., Collicott, C., Costanza, S., Denig, A., Downie, E. J., Dolzhikov, A. S., Drexler, P., Filkov, L. V., Glazier, D. I., Gorodnov, I., Gradl, W., Günther, M., Gurevich, G., Heijkenskjöld, L., Hornidge, D., Huber, G. M., Käser, A., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A., Lisin, V., Livingston, K., Lutterer, S., MacGregor, I. J. D., Maghrbi, Y., Manley, D. M., Martel, P. P., McGeorge, J. C., Middleton, D. G., Miskimen, R., Mornacchi, E., Mushkarenkov, A., Neganov, A., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Oussena, B., Paudyal, D., Pedroni, P., Pheron, F., Polonski, A., Prakhov, S. N., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Sokhoyan, V., Spieker, K., Steffen, O., Strakovsky, I. I., Supek, I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Yu. A., Wagner, S., Walford, N. K., Watts, D. P., Wettig, J., Wolfes, M., Zana, L. A., Zehr, F.
Background: Photoproduction of pion pairs allows to study sequential decays of nucleon resonances via excited intermediate states. Such decays are important e.g. for states which in the quark model have both oscillators excited and de-excite them in
Externí odkaz:
http://arxiv.org/abs/2207.14079
Measurements of the electron-helicity asymmetry in the quasi-elastic ${\rm A}(\vec{e},e' p)$ process
Autor:
Kolar, Tim, Paul, Sebouh J., Achenbach, Patrick, Arenhövel, Hartmuth, Ashkenazi, Adi, Beričič, Jure, Böhm, Ralph, Bosnar, Damir, Brecelj, Tilen, Cline, Ethan, Cohen, Erez O., Distler, Michael O., Esser, Anselm, Friščić, Ivica, Gilman, Ronald, Giusti, Carlotta, Heilig, Matthias, Hoek, Matthias, Izraeli, David, Kegel, Simon, Klag, Pascal, Korover, Igor, Lichtenstadt, Jechiel, Mardor, Israel, Merkel, Harald, Middleton, Duncan G., Mihovilovič, Miha, Müller, Julian, Müller, Ulrich, Olivenboim, Mor, Piasetzky, Eliezer, Pochodzalla, Josef, Ron, Guy, Schlimme, Björn S., Schoth, Matthias, Schulz, Florian, Sfienti, Concettina, Širca, Simon, Spreckels, Rouven, Štajner, Samo, Stöttinger, Yvonne, Strauch, Steffen, Thiel, Michaela, Tyukin, Alexey, Weber, Adrian, Yaron, Israel
We present measurements of the electron helicity asymmetry in quasi-elastic proton knockout from $^{2}$H and $^{12}$C nuclei by polarized electrons. This asymmetry depends on the fifth structure function, is antisymmetric with respect to the scatteri
Externí odkaz:
http://arxiv.org/abs/2107.00763
Autor:
Fonvieille, H., Beričič, J., Correa, L., Benali, M., Achenbach, P., Gayoso, C. Ayerbe, Bernauer, J. C., Blomberg, A., Böhm, R., Bosnar, D., Debenjak, L., Denig, A., Distler, M. O., Downie, E. J., Esser, A., Friščić, I., Kegel, S., Kohl, Y., Makek, M., Merkel, H., Middleton, D. G., Mihovilovič, M., Müller, U., Nungesser, L., Paolone, M., Pochodzalla, J., Majos, S. Sánchez, Schlimme, B. S., Schoth, M., Schulz, F., Sfienti, C., Širca, S., Sparveris, N., Štajner, S., Thiel, M., Tyukin, A., Weber, A., Weinriefer, M.
Publikováno v:
Phys. Rev. C 103, 025205 (2021)
Background: Generalized polarizabilities (GPs) are important observables to describe the nucleon structure, and measurements of these observables are still scarce. Purpose: This paper presents details of a virtual Compton scattering (VCS) experiment,
Externí odkaz:
http://arxiv.org/abs/2008.08958
Autor:
Paul, Sebouh J., Kolar, Tim, Brecelj, Tilen, Achenbach, Patrick, Arenhövel, Hartmuth, Ashkenazi, Adi, Beričič, Jure, Böhm, Ralph, Bosnar, Damir, Cline, Ethan, Cohen, Erez O., Debenjak, Luka, Distler, Michael O., Esser, Anselm, Friščić, Ivica, Gilman, Ronald, Giusti, Carlotta, Heilig, Matthias, Hoek, Matthias, Izraeli, David, Kegel, Simon, Klag, Pascal, Kohl, Yvonne, Korover, Igor, Lichtenstadt, Jechiel, Mardor, Israel, Merkel, Harald, Middleton, Duncan G., Mihovilovič, Miha, Müller, Julian, Müller, Ulrich, Olivenboim, Mor, Piasetzky, Eliezer, Pochodzalla, Josef, Ron, Guy, Schlimme, Björn S., Schoth, Matthias, Schulz, Florian, Sfienti, Concettina, Širca, Simon, Spreckels, Rouven, Štajner, Samo, Strauch, Steffen, Thiel, Michaela, Tyukin, Alexey, Weber, Adrian, Yaron, Israel
We report measurements of the induced polarization $\vec P$ of protons knocked out from $^2$H and $^{12}$C via the $A(e,e'\vec p\,)$ reaction. We have studied the dependence of $\vec P$ on two kinematic variables: the missing momentum $p_{\rm miss}$
Externí odkaz:
http://arxiv.org/abs/2008.04209
Autor:
Dieterle, M., Witthauer, L., Fix, A., Abt, S., Achenbach, P., Adlarson, P., Afzal, F., Bartolome, P. Aguar, Ahmed, Z., Annand, J. R. M., Arends, H. J., Bashkanov, M., Beck, R., Biroth, M., Borisov, N., Braghieri, A., Briscoe, W. J., Cividini, F., Collicott, C., Costanza, S., Denig, A., Dolzhikov, A. S., Downie, E. J., Drexler, P., Gardner, S., Ghosal, D., Glazier, D. I., Gorodnov, I., Gradl, W., G{ü, M., nther, Gurevich, D., Heijkenskj{ö, L., ld, Hornidge, D., Huber, G. M., K{ä, A., ser, Kashevarov, V. L., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A., Lisin, V., Livingston, K., Lutterer, S., MacGregor, I. J. D., Manley, D. M., Martel, P. P., Metag, V., Meyer, W., Middleton, D. G., Miskimen, R., Mornacchi, E., Mullen, C., Mushkarenkov, A., Neganov, A., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Paudyal, D., Pedroni, P., Polonski, A., Powell, A., Prakhov, S. N., Reicherz, G., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Sokhoyan, V., Spieker, K., Steffen, O., Strakovsky, I. I., Strub, T., Supek, I., Thiel, A., Thiel, M., Thomas, A., Unverzagt, M., Usov, Yu. A., Wagner, S., Walford, N. K., Watts, D. P., Werthmüller, D., Wettig, J., Wolfes, M., Zana, L. A.
Publikováno v:
Phys. Rev. Lett. 125, 062001 (2020)
The double-polarization observable $E$ and helicity-dependent cross sections $\sigma_{1/2}$, $\sigma_{3/2}$ have been measured for the photoproduction of $\pi^0$ pairs off quasi-free protons and neutrons at the Mainz MAMI accelerator with the Crystal
Externí odkaz:
http://arxiv.org/abs/2007.06079
Akademický článek
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Autor:
Briscoe, W. J., Hadzimehmedovi, M., Kudryavtsev, A. E., Kulikov, V. V., Martemianov, M. A., Strakovsky, I. I., Svarc, A., Tarasov, V. E., Workman, R. L., Abt, S., Achenbach, P., Akondi, C. S., Afzal, F., Aguar-Bartolome, P., Ahmed, Z., Annand, J. R. M., Arends, H. J., Bantawa, K., Bashkanov, M., Beck, R., Biroth, M., Borisov, N., Braghieri, A., Bulychjov, S. A., Cividini, F., Collicott, C., Costanza, S., Denig, A., Downie, E. J., Drexler, P., Fegan, S., Bondy, M. I. Ferretti, Gardner, S., Ghosal, D., Glazier, D. I., Gorodnov, I., Gradl, W., Gunther, M., Gurevich, D., Heijkenskjold, L., Hornidge, D., Huber, G. M., Kaeser, M., Kashevarov, V. L., Kay, S., Korolija, M., Krusche, B., Lazarev, A., Livingston, K., Lutterer, S., MacGregor, I. J. D., Macrae, R., Manley, D. M., Martel, P. P., McGeorge, J. C., Middleton, D. G., Miskimen, R., Mornacchi, E., Mushkarenkov, A., Mullen, C., Neganov, A., Neiser, A., Ostrick, M., Otte, P. B., Osmanovic, H., Oussena, R. Omerovic B., Paudyal, D., Pedroni, P., Powell, A., Prakhov, S. N., Ron, G., Rostomyan, T., Sarty, A., Senti, C., Sokhoyan, V., Spieker, K., Stahov, J., Steffen, O., Supek, I., Thiel, A., Thiel, M., Thomas, A., Tiator, L., Unverzagt, M., Usov, Yu. A., Walford, N. K., Watts, D. P., Wagner, S., Werthmueller, D., Wettig, J., Wolfes, M., Zachariou, N.
Publikováno v:
Phys. Rev. C 100, 065205 (2019)
The $\gamma n \to \pi^0 n$ differential cross section evaluated for 27 energy bins span the photon-energy range 290-813 MeV (W = 1.195-1.553 GeV) and the pion c.m. polar production angles, ranging from 18 deg to 162 deg, making use of model-dependent
Externí odkaz:
http://arxiv.org/abs/1908.02730
Autor:
Beričič, J., Correa, L., Benali, M., Achenbach, P., Gayoso, C. Ayerbe, Bernauer, J. C., Blomberg, A., Böhm, R., Bosnar, D., Debenjak, L., Denig, A., Distler, M. O., Downie, E. J., Esser, A., Fonvieille, H., Friščić, I., Kegel, S., Kohl, Y., Makek, M., Merkel, H., Middleton, D. G., Mihovilovič, M., Müller, U., Nungesser, L., Paolone, M., Pochodzalla, J., Majos, S. Sánchez, Schlimme, B. S., Schoth, M., Schulz, F., Sfienti, C., Širca, S., Sparveris, N., Štajner, S., Thiel, M., Tyukin, A., Weber, A., Weinriefer, M.
Publikováno v:
Phys. Rev. Lett. 123, 192302 (2019)
Virtual Compton scattering on the proton has been investigated at three yet unexplored values of the four-momentum transfer $Q^2$: 0.10, 0.20 and 0.45 GeV$^2$, at the Mainz Microtron. Fits performed using either the low-energy theorem or dispersion r
Externí odkaz:
http://arxiv.org/abs/1907.09954
Autor:
Sokhoyan, V., Prakhov, S., Fix, A., Abt, S., Achenbach, P., Adlarson, P., Afzal, F., Aguar-Bartolomé, P., Ahmed, Z., Altangerel, K., Annand, J. R. M., Arends, H. J., Bantawa, K., Bashkanov, M., Beck, R., Biroth, M., Borisov, N. S., Braghieri, A., Briscoe, W. J., Cherepnya, S., Cividini, F., Collicott, C., Costanza, S., Denig, A., Dieterle, M., Downie, E. J., Drexler, P., Bondy, M. I. Ferretti, Fil'kov, L. V., Gardner, S., Garni, S., Glazier, D. I., Gorodnov, I., Gradl, W., Günther, M., Gurevich, G. M., Heijkenskjöld, L., Hornidge, D., Huber, G. M., Käser, A., Kashevarov, V. L., Kay, S., Keshelashvili, I., Kondratiev, R., Korolija, M., Krusche, B., Lazarev, A., Livingston, K., Lutterer, S., MacGregor, I. J. D., Macrae, R., Manley, D. M., Martel, P. P., McGeorge, J. C., Middleton, D. G., Miskimen, R., Mornacchi, E., Mullen, C., Mushkarenkov, A., Neganov, A., Neiser, A., Oberle, M., Ostrick, M., Otte, P. B., Paudyal, D., Pedroni, P., Powell, A., Rickert, E., Ron, G., Rostomyan, T., Sarty, A., Sfienti, C., Spieker, K., Steffen, O., Strakovsky, I. I., Strandberg, B., Strub, Th., Supek, 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.
The beam-helicity asymmetry was measured, for the first time, in photoproduction of $\pi^{0}\eta$ pairs on carbon, aluminum, and lead, with the A2 experimental setup at MAMI. The results are compared to an earlier measurement on a free proton and to
Externí odkaz:
http://arxiv.org/abs/1907.00232