Measurement of the transverse target and beam-target asymmetries in η meson photoproduction at MAMI.
Phys Rev Lett
; 113(10): 102001, 2014 Sep 05.
Article
in En
| MEDLINE
| ID: mdl-25238349
ABSTRACT
We present new data for the transverse target asymmetry T and the very first data for the beam-target asymmetry F in the γ[over â]p[over â]âηp reaction up to a center-of-mass energy of W=1.9 GeV. The data were obtained with the Crystal-Ball/TAPS detector setup at the Glasgow tagged photon facility of the Mainz Microtron MAMI. All existing model predictions fail to reproduce the new data indicating a significant impact on our understanding of the underlying dynamics of η meson photoproduction. The peculiar nodal structure observed in existing T data close to threshold is not confirmed.
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Collection:
01-internacional
Database:
MEDLINE
Type of study:
Prognostic_studies
Language:
En
Journal:
Phys Rev Lett
Year:
2014
Document type:
Article
Affiliation country:
United States