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Article ; Online: Measurement of polarization observables

Jermann, N / Krusche, B / Metag, V / Afzal, F / Badea, M / Beck, R / Bielefeldt, P / Bieling, J / Biroth, M / Blanke, E / Borisov, N / Bornstein, M / Brinkmann, K-T / Ciupka, S / Crede, V / Dolzhikov, A / Drexler, P / Dutz, H / Elsner, D /

Fedorov, A / Frommberger, F / Gardner, S / Ghosal, D / Goertz, S / Gorodnov, I / Grüner, M / Hammann, C / Hartmann, J / Hillert, W / Hoffmeister, P / Honisch, C / Jude, T C / Kalischewski, F / Ketzer, B / Klassen, P / Klein, F / Klempt, E / Knaust, J / Kolanus, N / Kreit, J / Krönert, P / Lang, M / Lazarev, A B / Livingston, K / Lutterer, S / Mahlberg, P / Meier, C / Meyer, W / Mitlasoczki, B / Müllers, J / Nanova, M / Neganov, A / Nikonov, K / Noël, J F / Ostrick, M / Ottnad, J / Otto, B / Penman, G / Poller, T / Proft, D / Reicherz, G / Reinartz, N / Richter, L / Runkel, S / Salisbury, B / Sarantsev, A V / Schaab, D / Schmidt, C / Schmieden, H / Schultes, J / Seifen, T / Spieker, K / Stausberg, N / Steinacher, M / Taubert, F / Thiel, A / Thoma, U / Thomas, A / Urban, M / Urff, G / Usov, Y / van Pee, H / Wang, Y C / Wendel, C / Wiedner, U / Wunderlich, Y

The European physical journal. A, Hadrons and nuclei

2023 Volume 59, Issue 10, Page(s) 232

Abstract: The target ... ...

Abstract	The target asymmetry
Language	English
Publishing date	2023-10-17
Publishing country	France
Document type	Journal Article
ZDB-ID	1459066-9
ISSN	1434-601X ; 1434-6001
ISSN (online)	1434-601X
ISSN	1434-6001
DOI	10.1140/epja/s10050-023-01134-0
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Thesis: Messung der links-rechts Asymmetrie in der Elektrospaltung des Deuterons

Frommberger, Frank

1993

Author's details	von Frank Frommberger
Language	German
Size	2 Mikrofiches, graph. Darst
Document type	Book ; Thesis
Thesis / German Habilitation thesis	@Bonn, Univ., Diss. : 1993
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Book ; Thesis: Messung der links-rechts Asymmetrie in der Elektrospaltung des Deuterons

Frommberger, Frank

1993

Author's details	Frank Frommberger
Keywords	Deuteron ; Asymmetrie ; Elektrospaltung
Language	Undetermined
Size	II, 114 S, graph. Darst, 30 cm
Document type	Book ; Thesis
Thesis / German Habilitation thesis	@Bonn, Univ., Diss. : 1993
Note	Mikroreprod. e. Ms. II, 114 Bl. : graph. Darst
Database	Former special subject collection: coastal and deep sea fishing

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Book ; Thesis: Messung der links-rechts Asymmetrie in der Elektrospaltung des Deuterons

Frommberger, Frank

(Physikalisches Institut, Universität Bonn. BONN-IR ; 93-63)

1993

Author's details	von Frank Frommberger. Universität Bonn, Physikalisches Institut
Series title	Physikalisches Institut, Universität Bonn. BONN-IR ; 93-63
Language	Undetermined
Size	II, 113 S, Ill., graph. Darst, 30 cm
Publisher	Physikalisches Inst
Publishing place	Bonn
Document type	Book ; Thesis
Thesis / German Habilitation thesis	Zugl.: Bonn, Univ., Diss. : 1993
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Book ; Thesis: Messung der links-rechts Asymmetrie in der Elektrospaltung des Deuterons

Frommberger, Frank

1993

Author's details	von Frank Frommberger
Language	Undetermined
Size	II, 114 S, graph. Darst
Document type	Book ; Thesis
Thesis / German Habilitation thesis	@Bonn, Univ., Diss. : 1993
Note	Mikrofiche-Ausg.: 1993. 2 Mikrofiches : 24x, neg
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Book: Simulationsrechnungen zum Proton- und Neutronnachweis am ELAN-Experiment

Frommberger, Frank

(Physikalisches Institut, Universität Bonn. BONN-IR ; 89-35)

1989

Institution	Physikalisches Institut, Universität Bonn
Author's details	Frank Frommberger. Physikalisches Institut, Universität Bonn
Series title	Physikalisches Institut, Universität Bonn. BONN-IR ; 89-35
Size	61 S
Publishing place	Bonn
Document type	Book
Note	Bonn, Univ., Mathemat.-Naturwiss. Fak., Diplomarb. 1989
Database	Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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Article ; Online: Measurement of the helicity asymmetry

Gottschall, M / Afzal, F / Anisovich, A V / Bayadilov, D / Beck, R / Bichow, M / Brinkmann, K Th / Crede, V / Dieterle, M / Dietz, F / Dutz, H / Eberhardt, H / Elsner, D / Ewald, R / Fornet-Ponse, K / Friedrich, St / Frommberger, F / Gridnev, A / Grüner, M /

Gutz, E / Hammann, Ch / Hannappel, J / Hartmann, J / Hillert, W / Hoffmeister, Ph / Honisch, Ch / Jude, T / Kammer, S / Kalinowsky, H / Keshelashvili, I / Klassen, P / Klein, F / Klempt, E / Koop, K / Krusche, B / Kube, M / Lang, M / Lopatin, I / Mahlberg, P / Makonyi, K / Metag, V / Meyer, W / Müller, J / Müllers, J / Nanova, M / Nikonov, V / Novotny, R / Piontek, D / Reicherz, G / Rostomyan, T / Sarantsev, A / Schmidt, Ch / Schmieden, H / Seifen, T / Sokhoyan, V / Spieker, K / Thiel, A / Thoma, U / Urban, M / Pee, H van / Walther, D / Wendel, Ch / Werthmüller, D / Wiedner, U / Wilson, A / Winnebeck, A / Witthauer, L / Wunderlich, Y

The European physical journal. A, Hadrons and nuclei

2021 Volume 57, Issue 1, Page(s) 40

Abstract: A measurement of the double-polarization ... ...

Abstract	A measurement of the double-polarization observable
Language	English
Publishing date	2021-01-28
Publishing country	France
Document type	Journal Article
ZDB-ID	1459066-9
ISSN	1434-601X ; 1434-6001
ISSN (online)	1434-601X
ISSN	1434-6001
DOI	10.1140/epja/s10050-020-00334-2
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Observation of the pη^{'} Cusp in the New Precise Beam Asymmetry Σ Data for γp→pη.

Afzal, F / Wunderlich, Y / Anisovich, A V / Bayadilov, D / Beck, R / Becker, M / Blanke, E / Brinkmann, K-Th / Ciupka, S / Crede, V / Dieterle, M / Dutz, H / Elsner, D / Friedrich, S / Frommberger, F / Gridnev, A / Gottschall, M / Grüner, M / Gutz, E /

Hammann, C / Hannappel, J / Hartmann, J / Hillert, W / Hoff, J / Hoffmeister, P / Honisch, C / Jude, T / Kalinowsky, H / Kalischewski, F / Keshelashvili, I / Klassen, P / Klein, F / Klempt, E / Koop, K / Kroenert, P / Krusche, B / Lang, M / Lopatin, I / Mahlberg, P / Meißner, U-G / Messi, F / Metag, V / Meyer, W / Mitlasóczki, B / Müller, J / Müllers, J / Nanova, M / Nikonov, K / Nikonov, V / Novinskiy, V / Novotny, R / Piontek, D / Reicherz, G / Richter, L / Rönchen, D / Rostomyan, T / Salisbury, B / Sarantsev, A / Schaab, D / Schmidt, C / Schmieden, H / Schultes, J / Seifen, T / Sokhoyan, V / Sowa, C / Spieker, K / Stausberg, N / Thiel, A / Thoma, U / Triffterer, T / Urban, M / Urff, G / van Pee, H / Walther, D / Wendel, Ch / Wiedner, U / Wilson, A / Winnebeck, A / Witthauer, L

Physical review letters

2020 Volume 125, Issue 15, Page(s) 152002

Abstract: 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 moment ... ...

Abstract	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 moment analysis. For the first time, a strong cusp effect in a polarization observable has been observed that is an effect of a branch-point singularity at the pη^{'} threshold [E_{γ}=1447 MeV (W=1896 MeV)]. The latest BnGa partial wave analysis includes the new beam asymmetry data and yields a strong indication for the N(1895)1/2^{-} nucleon resonance, demonstrating the importance of including all singularities for a correct determination of partial waves and resonance parameters.
Language	English
Publishing date	2020-10-22
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.125.152002
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Three-body nature of N() and Δ() resonances from sequential decay chains.

Thiel, A / Sokhoyan, V / Gutz, E / van Pee, H / Anisovich, A V / Bacelar, J C S / Bantes, B / Bartholomy, O / Bayadilov, D / Beck, R / Beloglazov, Yu / Castelijns, R / Crede, V / Dutz, H / Elsner, D / Ewald, R / Frommberger, F / Fuchs, M / Funke, Ch /

Gregor, R / Gridnev, A / Hillert, W / Hoffmeister, Ph / Horn, I / Jaegle, I / Junkersfeld, J / Kalinowsky, H / Kammer, S / Kleber, V / Klein, Frank / Klein, Friedrich / Klempt, E / Kotulla, M / Krusche, B / Lang, M / Löhner, H / Lopatin, I / Lugert, S / Mertens, T / Messchendorp, J G / Metag, V / Metsch, B / Nanova, M / Nikonov, V / Novinski, D / Novotny, R / Ostrick, M / Pant, L / Pfeiffer, M / Piontek, D / Roy, A / Sarantsev, A V / Schmidt, Ch / Schmieden, H / Shende, S / Süle, A / Sumachev, V V / Szczepanek, T / Thoma, U / Trnka, D / Varma, R / Walther, D / Wendel, Ch / Wilson, A

Physical review letters

2015 Volume 114, Issue 9, Page(s) 91803

Abstract: The Nπ^{0}π^{0} decays of positive-parity N^{*} and Δ^{*} resonances at about 2 GeV are studied at ELSA by photoproduction of two neutral pions off protons. The data reveal clear evidence for several intermediate resonances: Δ(1232), N(1520)3/2^{-}, and ... ...

Abstract	The Nπ^{0}π^{0} decays of positive-parity N^{} and Δ^{} resonances at about 2 GeV are studied at ELSA by photoproduction of two neutral pions off protons. The data reveal clear evidence for several intermediate resonances: Δ(1232), N(1520)3/2^{-}, and N(1680)5/2^{+}, with spin parities J^{P}=3/2^{+}, 3/2^{-}, and 5/2^{+}. The partial wave analysis (within the Bonn-Gatchina approach) identifies N(1440)1/2^{+} and the N(ππ)_{S wave} (abbreviated as Nσ here) as further isobars and assigns the final states to the formation of nucleon and Δ resonances and to nonresonant contributions. We observe the known Δ(1232)π decays of Δ(1910)1/2^{+}, Δ(1920)3/2^{+}, Δ(1905)5/2^{+}, Δ(1950)7/2^{+}, and of the corresponding spin-parity series in the nucleon sector, N(1880)1/2^{+}, N(1900)3/2^{+}, N(2000)5/2^{+}, and N(1990)7/2^{+}. For the nucleon resonances, these decay modes are reported here for the first time. Further new decay modes proceed via N(1440)1/2^{+}π, N(1520)3/2^{-}π, N(1680)5/2^{+}π, and Nσ. The latter decay modes are observed in the decay of N^{} resonances and at most weakly in Δ^{} decays. It is argued that these decay modes provide evidence for a 3-quark nature of N^{*} resonances rather than a quark-diquark structure.
Language	English
Publishing date	2015-03-06
Publishing country	United States
Document type	Journal Article
ZDB-ID	208853-8
ISSN	1079-7114 ; 0031-9007
ISSN (online)	1079-7114
ISSN	0031-9007
DOI	10.1103/PhysRevLett.114.091803
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Momentum dependence of the imaginary part of the $\omega$- and $\eta^\prime$-nucleus optical potential

Friedrich, S. / Nanova, M. / Metag, V. / Afzal, F. N. / Bayadilov, D. / Bantes, B. / Beck, R. / Becker, M. / Böse, S. / Brinkmann, K. -T. / Crede, V. / Drexler, P. / Eberhardt, H. / Elsner, D. / Frommberger, F. / Funke, Ch. / Gottschall, M. / Grüner, M. / Gutz, E. /

Hammann, Ch. / Hannappel, J. / Hartmann, J. / Hillert, W. / Hoffmeister, Ph. / Honisch, Ch. / Jude, T. / Kaiser, D. / Kalischewski, F. / Keshelashvili, I. / Klein, F. / Koop, K. / Krusche, B. / Lang, M. / Makonyi, K. / Messi, F. / Müller, J. / Müllers, J. / Piontek, D. -M. / Rostomyan, T. / Schaab, D. / Schmidt, Ch. / Schmieden, H. / Schmitz, R. / Seifen, T. / Sokhoyan, V. / Sowa, C. / Spieker, K. / Thiel, A. / Thoma, U. / Triffterer, T. / Urban, M. / van Pee, H. / Walther, D. / Wendel, Ch. / Werthmüller, D. / Wiedner, U. / Wilson, A. / Witthauer, L. / Wunderlich, Y. / Zaunick, H. -G.

2016

Abstract: The photoproduction of $\omega$ and $\eta^\prime$ mesons off carbon and niobium nuclei has been measured as a function of the meson momentum for incident photon energies of 1.2-2.9 GeV at the electron accelerator ELSA. The mesons have been identified via ...

Abstract	The photoproduction of $\omega$ and $\eta^\prime$ mesons off carbon and niobium nuclei has been measured as a function of the meson momentum for incident photon energies of 1.2-2.9 GeV at the electron accelerator ELSA. The mesons have been identified via the $\omega \rightarrow \pi^0 \gamma \rightarrow 3 \gamma$ and $\eta^\prime\rightarrow \pi^0 \pi^0\eta \rightarrow 6 \gamma$ decays, respectively, registered with the CBELSA/TAPS detector system. From the measured meson momentum distributions the momentum dependence of the transparency ratio has been determined for both mesons. Within a Glauber analysis the in-medium $\omega$ and $\eta^\prime$ widths and the corresponding absorption cross sections have been deduced as a function of the meson momentum. The results are compared to recent theoretical predictions for the in-medium $\omega$ width and $\eta^\prime$-N absorption cross sections. The energy dependence of the imaginary part of the $\omega$- and $\eta^\prime$-nucleus optical potential has been extracted. The finer binning of the present data compared to the existing data allows a more reliable extrapolation towards the production threshold. The modulus of the imaginary part of the $\eta^\prime$ nucleus potential is found to be about three times smaller than recently determined values of the real part of the $\eta^\prime$-nucleus potential, which makes the $\eta^\prime$ meson a suitable candidate for the search for meson-nucleus bound states. For the $\omega$ meson, the modulus of the imaginary part near threshold is comparable to the modulus of the real part of the potential. As a consequence, only broad structures can be expected which makes the observation of $\omega$ mesic states very difficult experimentally. Comment: 10 pages, 8 figures
Keywords	Nuclear Experiment
Subject code	551
Publishing date	2016-08-22
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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