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

Nanova, M. ; Friedrich, S. ; Metag, V. ; Paryev, E. Ya ; Afzal, F. N. ; Bayadilov, D. ; Beck, R. ; Becker, M. LU ; Böse, S. and Brinkmann, K. T. , et al. (2016) In Physical Review C 94(2).
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... (More)

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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author collaboration
publishing date
type
Contribution to journal
publication status
published
subject
in
Physical Review C
volume
94
issue
2
article number
025205
publisher
American Physical Society
external identifiers
  • scopus:84989339584
ISSN
2469-9985
DOI
10.1103/PhysRevC.94.025205
language
English
LU publication?
no
id
7712a97d-5f0b-48d1-adc6-bed584aee8eb
date added to LUP
2019-03-11 13:31:08
date last changed
2020-11-22 03:48:02
@article{7712a97d-5f0b-48d1-adc6-bed584aee8eb,
  abstract     = {<p>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.</p>},
  author       = {Nanova, M. and Friedrich, S. and Metag, V. and Paryev, E. Ya and Afzal, F. N. and Bayadilov, D. and Beck, R. and Becker, M. and Böse, S. and Brinkmann, K. T. and Crede, V. and Elsner, D. and Frommberger, F. and Grüner, M. and Gutz, E. and Hammann, Ch and Hannappel, J. and Hartmann, J. and Hillert, W. and Hoffmeister, P. and Honisch, Ch and Jude, T. and Kalischewski, F. and Keshelashvili, I. and Klein, F. and Koop, K. and Krusche, B. and Lang, M. and Makonyi, K. and Messi, F. and Müller, J. and Müllers, J. and Piontek, D. M. and Rostomyan, T. and Schaab, D. and Schmidt, C. and Schmieden, H. and Schmitz, R. and Seifen, T. and Sowa, C. and Spieker, K. and Thiel, A. and Thoma, U. and Triffterer, T. and Urban, M. and Van Pee, H. and Walther, D. and Wendel, C. and Werthmüller, D. and Wilson, A.},
  issn         = {2469-9985},
  language     = {eng},
  month        = {08},
  number       = {2},
  publisher    = {American Physical Society},
  series       = {Physical Review C},
  title        = {Determination of the real part of the η′ -Nb optical potential},
  url          = {http://dx.doi.org/10.1103/PhysRevC.94.025205},
  doi          = {10.1103/PhysRevC.94.025205},
  volume       = {94},
  year         = {2016},
}