Determination of the real part of the η′ -Nb optical potential

M. Nanova; S. Friedrich; V. Metag; E. Ya Paryev; F. N. Afzal; D. Bayadilov; R. Beck; M. Becker; S. Böse; K. T. Brinkmann; V. Crede; D. Elsner; F. Frommberger; M. Grüner; E. Gutz; Ch Hammann; J. Hannappel; J. Hartmann; W. Hillert; P. Hoffmeister; Ch Honisch; T. Jude; F. Kalischewski; I. Keshelashvili; F. Klein; K. Koop; B. Krusche; K. Makonyi; F. Messi; J. Müller; J. Müllers; D. M. Piontek; T. Rostomyan; D. Schaab; C. Schmidt; H. Schmieden; R. Schmitz; T. Seifen; C. Sowa; K. Spieker; A. Thiel; U. Thoma; T. Triffterer; M. Urban; H. Van Pee; D. Walther; C. Wendel; U. Wiedner; L. Witthauer; CBELSA/TAPS Collaboration; Dominik Werthmüller

doi:10.1103/PhysRevC.94.025205

Determination of the real part of the η′ -Nb optical potential

M. Nanova, S. Friedrich, V. Metag, E. Ya Paryev, F. N. Afzal, D. Bayadilov, R. Beck, M. Becker, S. Böse, K. T. Brinkmann, V. Crede, D. Elsner, F. Frommberger, M. Grüner, E. Gutz, Ch Hammann, J. Hannappel, J. Hartmann, W. Hillert, P. HoffmeisterCh Honisch, T. Jude, F. Kalischewski, I. Keshelashvili, F. Klein, K. Koop, B. Krusche, K. Makonyi, F. Messi, J. Müller, J. Müllers, D. M. Piontek, T. Rostomyan, D. Schaab, C. Schmidt, H. Schmieden, R. Schmitz, T. Seifen, C. Sowa, K. Spieker, A. Thiel, U. Thoma, T. Triffterer, M. Urban, H. Van Pee, D. Walther, C. Wendel, U. Wiedner, L. Witthauer, CBELSA/TAPS Collaboration, Dominik Werthmüller

Physics

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Abstract

The excitation function and momentum distribution of η′ mesons have been measured in photoproduction off Nb93 in the energy range of 1.2-2.9 GeV. The experiment has been performed with the combined Crystal Barrel and MiniTAPS detector system, using tagged photon beams from the ELSA electron accelerator. Information on the sign and magnitude of the real part of the η′-Nb potential has been extracted from a comparison of the data with model calculations. An attractive potential of -(41±10(stat)±15(syst)) MeV depth at normal nuclear matter density is deduced within model uncertainties. This value is consistent with the potential depth of -(37±10(stat)±10(syst)) MeV obtained in an earlier measurement for a light nucleus (carbon). This relatively shallow η′-nucleus potential will make the search for η′-nucleus bound states more difficult.

Original language	English
Article number	025205
Journal	Physical Review C
Volume	94
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.94.025205
Publication status	Published - 31 Aug 2016

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PhysRevC.94.025205
©2016 American Physical Society
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Nanova, M., Friedrich, S., Metag, V., Paryev, E. Y., Afzal, F. N., Bayadilov, D., Beck, R., Becker, M., Böse, S., Brinkmann, K. T., Crede, V., Elsner, D., Frommberger, F., Grüner, M., Gutz, E., Hammann, C., Hannappel, J., Hartmann, J., Hillert, W., ... Werthmüller, D. (2016). Determination of the real part of the η′ -Nb optical potential. Physical Review C, 94(2), Article 025205. https://doi.org/10.1103/PhysRevC.94.025205

@article{74e924d8f89e4ec5a23b064f6e13b5fa,

title = "Determination of the real part of the η′ -Nb optical potential",

abstract = "The excitation function and momentum distribution of η′ mesons have been measured in photoproduction off Nb93 in the energy range of 1.2-2.9 GeV. The experiment has been performed with the combined Crystal Barrel and MiniTAPS detector system, using tagged photon beams from the ELSA electron accelerator. Information on the sign and magnitude of the real part of the η′-Nb potential has been extracted from a comparison of the data with model calculations. An attractive potential of -(41±10(stat)±15(syst)) MeV depth at normal nuclear matter density is deduced within model uncertainties. This value is consistent with the potential depth of -(37±10(stat)±10(syst)) MeV obtained in an earlier measurement for a light nucleus (carbon). This relatively shallow η′-nucleus potential will make the search for η′-nucleus bound states more difficult.",

author = "M. Nanova and S. Friedrich and V. Metag and Paryev, {E. Ya} and Afzal, {F. N.} and D. Bayadilov and R. Beck and M. Becker and S. B{\"o}se and Brinkmann, {K. T.} and V. Crede and D. Elsner and F. Frommberger and M. Gr{\"u}ner and E. Gutz and Ch Hammann and J. Hannappel and J. Hartmann and W. Hillert and P. Hoffmeister and Ch Honisch and T. Jude and F. Kalischewski and I. Keshelashvili and F. Klein and K. Koop and B. Krusche and K. Makonyi and F. Messi and J. M{\"u}ller and J. M{\"u}llers and Piontek, {D. M.} and T. Rostomyan and D. Schaab and C. Schmidt and H. Schmieden and R. Schmitz and T. Seifen and C. Sowa and K. Spieker and A. Thiel and U. Thoma and T. Triffterer and M. Urban and {Van Pee}, H. and D. Walther and C. Wendel and U. Wiedner and L. Witthauer and {CBELSA/TAPS Collaboration} and Dominik Werthm{\"u}ller",

note = "{\textcopyright}2016 American Physical Society",

year = "2016",

month = aug,

day = "31",

doi = "10.1103/PhysRevC.94.025205",

language = "English",

volume = "94",

journal = "Physical Review C",

issn = "2469-9985",

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Nanova, M, Friedrich, S, Metag, V, Paryev, EY, Afzal, FN, Bayadilov, D, Beck, R, Becker, M, Böse, S, Brinkmann, KT, Crede, V, Elsner, D, Frommberger, F, Grüner, M, Gutz, E, Hammann, C, Hannappel, J, Hartmann, J, Hillert, W, Hoffmeister, P, Honisch, C, Jude, T, Kalischewski, F, Keshelashvili, I, Klein, F, Koop, K, Krusche, B, Makonyi, K, Messi, F, Müller, J, Müllers, J, Piontek, DM, Rostomyan, T, Schaab, D, Schmidt, C, Schmieden, H, Schmitz, R, Seifen, T, Sowa, C, Spieker, K, Thiel, A, Thoma, U, Triffterer, T, Urban, M, Van Pee, H, Walther, D, Wendel, C, Wiedner, U, Witthauer, L, CBELSA/TAPS Collaboration & Werthmüller, D 2016, 'Determination of the real part of the η′ -Nb optical potential', Physical Review C, vol. 94, no. 2, 025205. https://doi.org/10.1103/PhysRevC.94.025205

TY - JOUR

T1 - Determination of the real part of the η′ -Nb optical potential

AU - Nanova, M.

AU - Friedrich, S.

AU - Metag, V.

AU - Paryev, E. Ya

AU - Afzal, F. N.

AU - Bayadilov, D.

AU - Beck, R.

AU - Becker, M.

AU - Böse, S.

AU - Brinkmann, K. T.

AU - Crede, V.

AU - Elsner, D.

AU - Frommberger, F.

AU - Grüner, M.

AU - Gutz, E.

AU - Hammann, Ch

AU - Hannappel, J.

AU - Hartmann, J.

AU - Hillert, W.

AU - Hoffmeister, P.

AU - Honisch, Ch

AU - Jude, T.

AU - Kalischewski, F.

AU - Keshelashvili, I.

AU - Klein, F.

AU - Koop, K.

AU - Krusche, B.

AU - Makonyi, K.

AU - Messi, F.

AU - Müller, J.

AU - Müllers, J.

AU - Piontek, D. M.

AU - Rostomyan, T.

AU - Schaab, D.

AU - Schmidt, C.

AU - Schmieden, H.

AU - Schmitz, R.

AU - Seifen, T.

AU - Sowa, C.

AU - Spieker, K.

AU - Thiel, A.

AU - Thoma, U.

AU - Triffterer, T.

AU - Urban, M.

AU - Van Pee, H.

AU - Walther, D.

AU - Wendel, C.

AU - Wiedner, U.

AU - Witthauer, L.

AU - CBELSA/TAPS Collaboration

AU - Werthmüller, Dominik

PY - 2016/8/31

Y1 - 2016/8/31

N2 - The excitation function and momentum distribution of η′ mesons have been measured in photoproduction off Nb93 in the energy range of 1.2-2.9 GeV. The experiment has been performed with the combined Crystal Barrel and MiniTAPS detector system, using tagged photon beams from the ELSA electron accelerator. Information on the sign and magnitude of the real part of the η′-Nb potential has been extracted from a comparison of the data with model calculations. An attractive potential of -(41±10(stat)±15(syst)) MeV depth at normal nuclear matter density is deduced within model uncertainties. This value is consistent with the potential depth of -(37±10(stat)±10(syst)) MeV obtained in an earlier measurement for a light nucleus (carbon). This relatively shallow η′-nucleus potential will make the search for η′-nucleus bound states more difficult.

AB - The excitation function and momentum distribution of η′ mesons have been measured in photoproduction off Nb93 in the energy range of 1.2-2.9 GeV. The experiment has been performed with the combined Crystal Barrel and MiniTAPS detector system, using tagged photon beams from the ELSA electron accelerator. Information on the sign and magnitude of the real part of the η′-Nb potential has been extracted from a comparison of the data with model calculations. An attractive potential of -(41±10(stat)±15(syst)) MeV depth at normal nuclear matter density is deduced within model uncertainties. This value is consistent with the potential depth of -(37±10(stat)±10(syst)) MeV obtained in an earlier measurement for a light nucleus (carbon). This relatively shallow η′-nucleus potential will make the search for η′-nucleus bound states more difficult.

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U2 - 10.1103/PhysRevC.94.025205

DO - 10.1103/PhysRevC.94.025205

M3 - Article

AN - SCOPUS:84989339584

SN - 2469-9985

VL - 94

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 025205

ER -

Determination of the real part of the η′ -Nb optical potential

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