Determination of the real part of the η′ -Nb optical potential
(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.
(Less)
- author
- Nanova, M.
; Friedrich, S.
; Metag, V.
; Paryev, E. Ya
; Afzal, F. N.
; Bayadilov, D.
; Beck, R.
; Becker, M.
LU
; Böse, S.
; Brinkmann, K. T.
; Crede, V.
; Elsner, D.
; Frommberger, F.
; Grüner, M.
; Gutz, E.
; Hammann, Ch
; Hannappel, J.
; Hartmann, J.
; Hillert, W.
; Hoffmeister, P.
; Honisch, Ch
; Jude, T.
; Kalischewski, F.
; Keshelashvili, I.
; Klein, F.
; Koop, K.
; Krusche, B.
; Lang, M.
LU
; Makonyi, K.
; Messi, F.
LU
; Müller, J.
; Müllers, J.
; Piontek, D. M.
; Rostomyan, T.
; Schaab, D.
; Schmidt, C.
; Schmieden, H.
; Schmitz, R.
; Seifen, T.
; Sowa, C.
; Spieker, K.
; Thiel, A.
LU
; Thoma, U.
; Triffterer, T.
; Urban, M.
; Van Pee, H.
; Walther, D.
LU
; Wendel, C.
; Werthmüller, D.
and Wilson, A.
(Less) - author collaboration
- publishing date
- 2016-08-31
- 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
- 2022-04-06 11:34:44
@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}},
}