$$K^{+}\Lambda $$ photoproduction at forward angles and low momentum transfer

Autor: P. Pedroni, P. Levi Sandri, A. V. Sarantsev, Patrick Bauer, M. Romaniuk, R. Messi, A. M. Lapik, Giuseppe Mandaglio, B.-E. Reitz, D. Elsner, R. Di Salvo, O. Freyermuth, A. Fantini, J. Hannappel, V. Tarakanov, Frank Frommberger, F. Ghio, N. G. Kozlenko, G. Scheluchin, V. G. Nedorezov, P. L. Cole, T. Zimmermann, D. Novinskiy, S. Goertz, D. Hammann, J. Bieling, K. Kohl, H. Schmieden, D. E. Bayadilov, A. B. Gridnev, A. Polonskiy, V. Lisin, S. Alef, V. V. Sumachev, V. A. Nikonov, A. Bella, R. Beck, T. C. Jude, V. Vegna, D. Moricciani, A. Stuglev, Francesco Messi, A. Braghieri

Publikováno v: The European Physical Journal A. 57

$\gamma p \rightarrow K^+ \Lambda$ differential cross sections and recoil polarisation data from threshold for extremely forward angles are presented. The measurements were performed at the BGOOD experiment at ELSA, utilising the high angular and mom

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1571516ff42c632650c470c943489b41
https://doi.org/10.1140/epja/s10050-021-00392-0

Observation of the pη′ Cusp in the New Precise Beam Asymmetry Σ Data for γp→pη

Autor: Cbelsa, F. Afzal, L Richter, S. Ciupka, U-G Meißner, V. Metag, W. Meyer, M. Grüner, K. Koop, T. Seifen, Lilian Witthauer, H. Kalinowsky, Matthew Lang, D. Piontek, N. Stausberg, M. Urban, I. V. Lopatin, A. V. Sarantsev, T. C. Jude, Frank Frommberger, M. Becker, B. Mitlasóczki, H. Schmieden, M. Dieterle, V. Sokhoyan, H. van Pee, D. E. Bayadilov, P. Klassen, K. Spieker, K. Nikonov, B. Krusche, A. B. Gridnev, Mariana Nanova, B. Salisbury, Wolfgang Hillert, J. Hannappel, C. Sowa, J. Hoff, E. Gutz, Ch. Honisch, J. Schultes, H. Dutz, G. Urff, Ch. Schmidt, Y. Wunderlich, Ulrich Wiedner, Frank Klein, V. Crede, U. Thoma, D. Elsner, S. Friedrich, A. Wilson, R. W. Novotny, Ph. Hoffmeister, A. Thiel, V. Novinskiy, P. Mahlberg, A. V. Anisovich, Francesco Messi, I. Keshelashvili, Ch. Wendel, F. Kalischewski, K.-T. Brinkmann, T. Triffterer, P. Kroenert, G. Reicherz, D. Walther, Jörg H. Müller, Jens Hartmann, D. Rönchen, T. Rostomyan, M. Gottschall, E. Blanke, D. Schaab, R. Beck, Ch. Hammann, A. Winnebeck, J. Müllers, Eberhard Klempt, V. A. Nikonov

Publikováno v: Physical Review Letters. 125

Data on the beam asymmetry Σ in the photoproduction of η mesons off protons are reported for tagged photon energies from 1130 to 1790 MeV (mass range from W=1748 MeV to W=2045 MeV). The data cover the full solid angle that allows for a precise mome

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8ed98e6814003dade4cb76c11e96a05f
https://doi.org/10.1103/physrevlett.125.152002

Strangeness photoproduction at the BGO-OD experiment

Autor: H. Schmieden, D. Elsner, A. B. Gridnev, N. G. Kozlenko, V. G. Nedorezov, Patrick Bauer, A. M. Lapik, T. C. Jude, G. Scheluchin, Christian Tillmanns, Valery Lisin, Alessandro Braghieri, S. Alef, Philip Cole, Paolo Levi Sandri, M. Romaniuk, B.-E. Reitz, V. Tarakanov, D. V. Novinsky, R. Messi, D. Hammann, F. Ghio, P. Pedroni, Rachele Di Salvo, D. Moricciani, O. Freyermuth, J. Hannappel, A. Polonski, K. Kohl, A. Fantini, Giuseppe Mandaglio, Reinhard Beck, V. V. Sumachev

Publikováno v: EPJ Web of Conferences, Vol 241, p 01008 (2020)

The BGO-OD experiment at the ELSA accelerator facility uses an energy tagged bremsstrahlung photon beam to investigate the excitation structure of the nucleon. The setup consists of a highly segmented BGO calorimeter surrounding the target, with a pa

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9322c679f2291d0a740e713dbf4d2571
http://arxiv.org/abs/2008.02023

Observation of a cusp-like structure in the γp → K+Σ0 cross section at forward angles and low momentum transfer

Autor: D. Elsner, P. Pedroni, N. G. Kozlenko, Giuseppe Mandaglio, R. Messi, V. G. Nedorezov, Patrick Bauer, V. A. Nikonov, P. Levi Sandri, R. Di Salvo, S. Alef, B.-E. Reitz, A. V. Sarantsev, J. Bieling, J. Hannappel, M. Romaniuk, R. Beck, F. Ghio, A. M. Lapik, V. V. Sumachev, V. Lisin, D. Hammann, Francesco Messi, H. Schmieden, D. E. Bayadilov, A. B. Gridnev, Frank Frommberger, A. Bella, A. Polonskiy, V. Tarakanov, O. Freyermuth, A. Fantini, D. Novinskiy, S. Goertz, A. Stuglev, P. L. Cole, K. Kohl, A. Braghieri, T. C. Jude, T. Zimmermann, G. Scheluchin, D. Moricciani, V. Vegna

Publikováno v: Physics Letters B, Vol 820, Iss, Pp 136559-(2021)

The γ p → K + Σ 0 differential cross section at extremely forward angles was measured at the BGOOD experiment. A three-quarter drop in strength over a narrow range in energy and a strong dependence on the polar angle of the K + in the centre-of-m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::07fa568b4ba8b3c4c5335744d0eb9cf3
https://doi.org/10.1016/j.physletb.2021.136559

New data on γ→p→→ηp with polarized photons and protons and their implications for N⁎ → Nη decays

Autor: P. Klassen, V. Hannen, J. Herick, Reinhard Beck, Ch. Wendel, S. Kammer, Jens Hartmann, V. Metag, H. van Pee, F. Dietz, P. Mahlberg, Ch. Honisch, Ch. Schmidt, Th. Challand, S. Böse, T. C. Jude, H. Kalinowsky, M. Bichow, K. Koop, T. Rostomyan, M. Becker, I. Jaegle, G. Reicherz, A. Berlin, A. Käser, Friedrich Klein, M. Gottschall, D. Kaiser, A. Wilson, R. Schmitz, T. Seifen, R. Ewald, C. Rosenbaum, Yasser Maghrbi, F. Afzal, H. Dutz, O. Jahn, H. Eberhardt, D. Elsner, A. Thiel, R. W. Novotny, Ph. Hoffmeister, V. Crede, S. Goertz, A. V. Anisovich, J. Müller, H. Schmieden, D. E. Bayadilov, A. B. Gridnev, Mariana Nanova, M. Grüner, B. Roth, Frank Frommberger, Matthew Lang, S. Friedrich, K. Makonyi, Francesco Messi, B. Bantes, J. Hannappel, Wolfgang Hillert, M. Kube, E. Gutz, Ulrich Wiedner, M. Urban, V. Kleber, U. Thoma, V. Sokhoyan, F. Kalischewski, I. Keshelashvili, W. Meyer, J. Müllers, Eberhard Klempt, K. Fornet-Ponse, C. Funke, D. V. Novinski, Lilian Witthauer, Ch. Hammann, B. Krusche, P. Drexler, A. Winnebeck, V. A. Nikonov, M. Dieterle, K.-T. Brinkmann, Yu. A. Beloglazov, A. V. Sarantsev, D. Piontek, I. V. Lopatin, D. Walther

Publikováno v: Physics Letters B. 803:135323

The polarization observables T , E , P , H , and G in photoproduction of η mesons off protons are measured for photon energies from threshold to W = 2400 MeV (T), 2280 MeV (E), 1620 MeV ( P , H ), or 1820 MeV (G), covering nearly the full solid angl

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::040a015fa3b1f8ab3a99f2f1b3e440ef
https://doi.org/10.1016/j.physletb.2020.135323