This title appears in the Scientific Report :
2011
Please use the identifier:
http://dx.doi.org/10.1088/1742-6596/295/1/012136 in citations.
Please use the identifier: http://hdl.handle.net/2128/25192 in citations.
Precision measurement of the eta-mass at COSY-ANKE
Precision measurement of the eta-mass at COSY-ANKE
Measurements on the mass of the -meson performed at different experimental facilities over the last decade have resulted in very precise results but differ by up to 0.5 MeV/c(2) i e, more than eight standard deviations. In order to clarify this situation a new high precision measurement of the dp -&...
Saved in:
Personal Name(s): | Khoukaz, A. |
---|---|
Goslawski, P. / ANKE Collaboration | |
Contributing Institute: |
Experimentelle Hadrondynamik; IKP-2 |
Published in: | Journal of physics / Conference Series, 295 (2011) |
Published in: |
for the ANKE collaboration |
Imprint: |
Bristol
IOP Publ.
2011
|
DOI: |
10.1088/1742-6596/295/1/012136 |
Document Type: |
Journal Article |
Research Program: |
Physik der Hadronen und Kerne |
Series Title: |
Journal of Physics : Conference Series
295 |
Link: |
Get full text OpenAccess OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25192 in citations.
Measurements on the mass of the -meson performed at different experimental facilities over the last decade have resulted in very precise results but differ by up to 0.5 MeV/c(2) i e, more than eight standard deviations. In order to clarify this situation a new high precision measurement of the dp -> (3)He reaction was conducted at the COoler SYnchrotron - COSY - of the Forschungszentrum Juelich using the ANKE magnetic spectrometer, with the aim to achieve a mass resolution of m < 50 keV/c( 2). In order to measure the meson mass with high accuracy through the dp -> (3)He reaction, both the momentum of the circulating deuteron beam in COSY as well as of the emitted (3)He nucleus has to be determined with high precision. The experimenta lly achieved resolution for the momenta of the (3)He nuclei and the beam deuterons will allow to reach the envisaged -meson mass resolution. |