Photoproduction of η′;-mesons off the deuteron

I. Jaegle, T. Mertens, A. Fix, F. Huang, K. Nakayama, L. Tiator, A. V. Anisovich, J. C S Bacelar, B. Bantes, O. Bartholomy, D. E. Bayadilov, R. Beck, Y. A. Beloglazov, R. Castelijns, V. Crede, H. Dutz, D. Elsner, R. Ewald, F. Frommberger, C. Funke & 45 others R. Gregor, A. B. Gridnev, E. Gutz, W. Hillert, S. Höffgen, J. Junkersfeld, H. Kalinowsky, S. Kammer, V. Kleber, Frank Klein, Friedrich Klein, E. Klempt, M. Kotulla, B. Krusche, M. Lang, H. Löhner, I. V. Lopatin, S. Lugert, D. Menze, J. G. Messchendorp, V. Metag, V. A. Nikonov, M. Nanova, D. V. Novinski, R. Novotny, M. Ostrick, L. M. Pant, H. van Pee, M. Pfeiffer, A. Roy, A. V. Sarantsev, S. Schadmand, C. Schmidt, H. Schmieden, B. Schoch, S. V. Shende, V. Sokhoyan, A. Süle, V. V. Sumachev, T. Szczepanek, U. Thoma, D. Trnka, R. Varma, D. Walther, C. Wendel

Research output: Contribution to journalArticle

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Abstract

Quasi-free photoproduction of η′-mesons off nucleons bound in the deuteron has been measured with the combined Crystal Barrel - TAPS detector. The experiment was done at a tagged photon beam of the ELSA electron accelerator in Bonn for incident photon energies from the production threshold up to 2.5 GeV. The η′-mesons have been detected in coincidence with recoil protons and recoil neutrons. The quasi-free proton data are in good agreement with the results for free protons, indicating that nuclear effects have no significant impact. The coincidence with recoil neutrons provides the first data for the γn → nη′ reaction. In addition, also first estimates for coherent η′-production off the deuteron have been obtained. In agreement with model predictions, the total cross-section for this channel is found to be very small, at most at the level of a few nb. The data are compared to model calculations taking into account contributions from nucleon resonances and t-channel exchanges.

Original languageEnglish
Article number11
Pages (from-to)1-18
Number of pages18
JournalEuropean Physical Journal A
Volume47
Issue number1
DOIs
Publication statusPublished - Jan 2011

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photoproduction
deuterons
mesons
neutrons
recoil protons
electron accelerators
protons
photon beams
nucleons
thresholds
detectors
cross sections
photons
estimates
predictions
crystals
energy

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Jaegle, I., Mertens, T., Fix, A., Huang, F., Nakayama, K., Tiator, L., ... Wendel, C. (2011). Photoproduction of η′;-mesons off the deuteron. European Physical Journal A, 47(1), 1-18. [11]. https://doi.org/10.1140/epja/i2011-11011-x

Photoproduction of η′;-mesons off the deuteron. / Jaegle, I.; Mertens, T.; Fix, A.; Huang, F.; Nakayama, K.; Tiator, L.; Anisovich, A. V.; Bacelar, J. C S; Bantes, B.; Bartholomy, O.; Bayadilov, D. E.; Beck, R.; Beloglazov, Y. A.; Castelijns, R.; Crede, V.; Dutz, H.; Elsner, D.; Ewald, R.; Frommberger, F.; Funke, C.; Gregor, R.; Gridnev, A. B.; Gutz, E.; Hillert, W.; Höffgen, S.; Junkersfeld, J.; Kalinowsky, H.; Kammer, S.; Kleber, V.; Klein, Frank; Klein, Friedrich; Klempt, E.; Kotulla, M.; Krusche, B.; Lang, M.; Löhner, H.; Lopatin, I. V.; Lugert, S.; Menze, D.; Messchendorp, J. G.; Metag, V.; Nikonov, V. A.; Nanova, M.; Novinski, D. V.; Novotny, R.; Ostrick, M.; Pant, L. M.; van Pee, H.; Pfeiffer, M.; Roy, A.; Sarantsev, A. V.; Schadmand, S.; Schmidt, C.; Schmieden, H.; Schoch, B.; Shende, S. V.; Sokhoyan, V.; Süle, A.; Sumachev, V. V.; Szczepanek, T.; Thoma, U.; Trnka, D.; Varma, R.; Walther, D.; Wendel, C.

In: European Physical Journal A, Vol. 47, No. 1, 11, 01.2011, p. 1-18.

Research output: Contribution to journalArticle

Jaegle, I, Mertens, T, Fix, A, Huang, F, Nakayama, K, Tiator, L, Anisovich, AV, Bacelar, JCS, Bantes, B, Bartholomy, O, Bayadilov, DE, Beck, R, Beloglazov, YA, Castelijns, R, Crede, V, Dutz, H, Elsner, D, Ewald, R, Frommberger, F, Funke, C, Gregor, R, Gridnev, AB, Gutz, E, Hillert, W, Höffgen, S, Junkersfeld, J, Kalinowsky, H, Kammer, S, Kleber, V, Klein, F, Klein, F, Klempt, E, Kotulla, M, Krusche, B, Lang, M, Löhner, H, Lopatin, IV, Lugert, S, Menze, D, Messchendorp, JG, Metag, V, Nikonov, VA, Nanova, M, Novinski, DV, Novotny, R, Ostrick, M, Pant, LM, van Pee, H, Pfeiffer, M, Roy, A, Sarantsev, AV, Schadmand, S, Schmidt, C, Schmieden, H, Schoch, B, Shende, SV, Sokhoyan, V, Süle, A, Sumachev, VV, Szczepanek, T, Thoma, U, Trnka, D, Varma, R, Walther, D & Wendel, C 2011, 'Photoproduction of η′;-mesons off the deuteron', European Physical Journal A, vol. 47, no. 1, 11, pp. 1-18. https://doi.org/10.1140/epja/i2011-11011-x
Jaegle I, Mertens T, Fix A, Huang F, Nakayama K, Tiator L et al. Photoproduction of η′;-mesons off the deuteron. European Physical Journal A. 2011 Jan;47(1):1-18. 11. https://doi.org/10.1140/epja/i2011-11011-x
Jaegle, I. ; Mertens, T. ; Fix, A. ; Huang, F. ; Nakayama, K. ; Tiator, L. ; Anisovich, A. V. ; Bacelar, J. C S ; Bantes, B. ; Bartholomy, O. ; Bayadilov, D. E. ; Beck, R. ; Beloglazov, Y. A. ; Castelijns, R. ; Crede, V. ; Dutz, H. ; Elsner, D. ; Ewald, R. ; Frommberger, F. ; Funke, C. ; Gregor, R. ; Gridnev, A. B. ; Gutz, E. ; Hillert, W. ; Höffgen, S. ; Junkersfeld, J. ; Kalinowsky, H. ; Kammer, S. ; Kleber, V. ; Klein, Frank ; Klein, Friedrich ; Klempt, E. ; Kotulla, M. ; Krusche, B. ; Lang, M. ; Löhner, H. ; Lopatin, I. V. ; Lugert, S. ; Menze, D. ; Messchendorp, J. G. ; Metag, V. ; Nikonov, V. A. ; Nanova, M. ; Novinski, D. V. ; Novotny, R. ; Ostrick, M. ; Pant, L. M. ; van Pee, H. ; Pfeiffer, M. ; Roy, A. ; Sarantsev, A. V. ; Schadmand, S. ; Schmidt, C. ; Schmieden, H. ; Schoch, B. ; Shende, S. V. ; Sokhoyan, V. ; Süle, A. ; Sumachev, V. V. ; Szczepanek, T. ; Thoma, U. ; Trnka, D. ; Varma, R. ; Walther, D. ; Wendel, C. / Photoproduction of η′;-mesons off the deuteron. In: European Physical Journal A. 2011 ; Vol. 47, No. 1. pp. 1-18.
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abstract = "Quasi-free photoproduction of η′-mesons off nucleons bound in the deuteron has been measured with the combined Crystal Barrel - TAPS detector. The experiment was done at a tagged photon beam of the ELSA electron accelerator in Bonn for incident photon energies from the production threshold up to 2.5 GeV. The η′-mesons have been detected in coincidence with recoil protons and recoil neutrons. The quasi-free proton data are in good agreement with the results for free protons, indicating that nuclear effects have no significant impact. The coincidence with recoil neutrons provides the first data for the γn → nη′ reaction. In addition, also first estimates for coherent η′-production off the deuteron have been obtained. In agreement with model predictions, the total cross-section for this channel is found to be very small, at most at the level of a few nb. The data are compared to model calculations taking into account contributions from nucleon resonances and t-channel exchanges.",
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AU - Jaegle, I.

AU - Mertens, T.

AU - Fix, A.

AU - Huang, F.

AU - Nakayama, K.

AU - Tiator, L.

AU - Anisovich, A. V.

AU - Bacelar, J. C S

AU - Bantes, B.

AU - Bartholomy, O.

AU - Bayadilov, D. E.

AU - Beck, R.

AU - Beloglazov, Y. A.

AU - Castelijns, R.

AU - Crede, V.

AU - Dutz, H.

AU - Elsner, D.

AU - Ewald, R.

AU - Frommberger, F.

AU - Funke, C.

AU - Gregor, R.

AU - Gridnev, A. B.

AU - Gutz, E.

AU - Hillert, W.

AU - Höffgen, S.

AU - Junkersfeld, J.

AU - Kalinowsky, H.

AU - Kammer, S.

AU - Kleber, V.

AU - Klein, Frank

AU - Klein, Friedrich

AU - Klempt, E.

AU - Kotulla, M.

AU - Krusche, B.

AU - Lang, M.

AU - Löhner, H.

AU - Lopatin, I. V.

AU - Lugert, S.

AU - Menze, D.

AU - Messchendorp, J. G.

AU - Metag, V.

AU - Nikonov, V. A.

AU - Nanova, M.

AU - Novinski, D. V.

AU - Novotny, R.

AU - Ostrick, M.

AU - Pant, L. M.

AU - van Pee, H.

AU - Pfeiffer, M.

AU - Roy, A.

AU - Sarantsev, A. V.

AU - Schadmand, S.

AU - Schmidt, C.

AU - Schmieden, H.

AU - Schoch, B.

AU - Shende, S. V.

AU - Sokhoyan, V.

AU - Süle, A.

AU - Sumachev, V. V.

AU - Szczepanek, T.

AU - Thoma, U.

AU - Trnka, D.

AU - Varma, R.

AU - Walther, D.

AU - Wendel, C.

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N2 - Quasi-free photoproduction of η′-mesons off nucleons bound in the deuteron has been measured with the combined Crystal Barrel - TAPS detector. The experiment was done at a tagged photon beam of the ELSA electron accelerator in Bonn for incident photon energies from the production threshold up to 2.5 GeV. The η′-mesons have been detected in coincidence with recoil protons and recoil neutrons. The quasi-free proton data are in good agreement with the results for free protons, indicating that nuclear effects have no significant impact. The coincidence with recoil neutrons provides the first data for the γn → nη′ reaction. In addition, also first estimates for coherent η′-production off the deuteron have been obtained. In agreement with model predictions, the total cross-section for this channel is found to be very small, at most at the level of a few nb. The data are compared to model calculations taking into account contributions from nucleon resonances and t-channel exchanges.

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