Heavy Meson Production at COSY - 11

The COSY-11 collaboration has measured the total cross section for the pp→ppη′ and pp→ppη reactions in the excess energy range from Q=1.5 MeV to Q=23.6 MeV and from Q=0.5 MeV to Q=5.4 MeV, respectively. Measurements have been performed with the total luminosity of 73 nb−1 for the pp→ppη reaction and 1360 nb−1 for the pp→ppη′ one. Recent results are presented and discussed.