Budzanowski A.Chatterjee A.Hawranek P.Jahn R.Jain B.K.Jha V.Kailas S.Kilian K.Kliczewski S.Kirillov D.Kirillov D.Kolev D.Kravcikova M.Lesiak M.Lieb J.Liu L.C.MacHner H.Magiera A.Maier R.Martinska G.Nedev S.Piskunov N.Protić D.Ritman J.Von Rossen P.Roy B.J.Shukla P.Sitnik I.Siudak R.Tsenov R.Urban J.Vankova G.2024-07-102024-07-102024-07-102024-07-102009-01-051089-490X0556-281310.1103/PhysRevC.79.012201SCOPUS_ID:58249100188https://rlib.uctm.edu/handle/123456789/153We have studied the reaction p+Al27 → He3+p+π-+X at recoil-free kinematics. An η meson possibly produced in this reaction would be thus almost at rest in the laboratory system and could therefore be bound with high probability, if nuclear η states exist. The decay of such a state through the N*(1535) resonance would lead to a proton-π- pair emitted in opposite directions. For these conditions we find some indication of such a bound state. An upper limit of ≈0.5 nb is found. © 2009 The American Physical Society.enArticle