%0 Journal Article
%T Transparency ratio in gamma A -> eta ' A ' and the in-medium eta ' width
%A Nanova, M. et al
%A Oset, E.
%J Physics Letters B
%D 2012
%V 710
%N 4-5
%I Elsevier Science Bv
%@ 0370-2693
%G English
%F Nanova+Oset2012
%O WOS:000303221800012
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1008), last updated on Thu, 01 Nov 2012 19:57:34 +0000
%X The photoproduction of eta'-mesons off different nuclei has been measured with the CBELSA/TAPS detector system for incident photon energies between 1500-2200 MeV. The transparency ratio has been deduced and compared to theoretical calculations describing the propagation of eta'-mesons in nuclei. The comparison indicates a width of the eta'-meson of the order of Gamma = 15-25 MeV at rho = rho(0) for an average momentum p(eta') = 1050 MeV/c, at which the eta'-meson is produced in the nuclear rest frame. The inelastic eta'N cross section is estimated to be 3-10 mb. Parameterizing the photoproduction cross section of eta'-mesons by sigma(A) = sigma(0)A(alpha), a value of alpha = 0.84 +/- 0.03 has been deduced.
%R 10.1016/j.physletb.2012.03.039
%U http://arxiv.org/abs/1204.2914
%U https://doi.org/10.1016/j.physletb.2012.03.039
%P 600-606