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FIZIKA B 20 (2011) 3, 223-236
 
STUDIES OF THE η MESON WITH WASA AT COSY AND KLOE-2 AT DAΦNE
PAWEL MOSKAL
for and on behalf of the KLOE-2 and WASA-at-COSY Collaborations
Institute of Physics, Jagiellonian University, PL-30-059 Cracow, Poland, and
Institut für Kernphysik, Forschungszentrum
Jülich, D-52425 Jülich, Germany
Received 7 February 2011; Accepted 21 December 2011
Online 3 February 2012
One of the basic motivations of the KLOE-2 and WASA-at-COSY
experiments is the test of fundamental symmetries and the
search for phenomena beyond the Standard Model in the
hadronic and leptonic decays of ground-state mesons and in
particular in decays of the η meson. At COSY these
mesons are produced in collisions of proton or deuteron beam
with hydrogen or deuterium pellet target, and at
DAΦNE η mesons originate from radiative decays of
ϕ meson or from the fusion of virtual gamma quanta
exchanged between colliding electrons and positrons. This
contribution includes brief description of experimental
techniques used by KLOE-2 and WASA-at-COSY as well as some
of physics aspects motivating investigations of production
and decays of η mesons.
PACS numbers: 14.40.Be, 11.30 Er, 13.25.-k, 13.20.-v,
13.75.-n, 13.66. Bc, 21.85.+d, 95.35.+d
UDC 539.126
Keywords: discrete symmetries, meson decays, meson production, mesic nuclei, dark matter
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