A study of f0(1500) decays into 4 π0 in [formula omitted] at rest

A Abele,P Giarritta,P Blüm,D Engelhardt,T Kiel,K Braune,J Adomeit,J Reißmann,J Lüdemann,W Röthel,S Resag,P Kammel,K Beuchert,C.J Batty,A Berdoz,W Dünnweber,H Matthäy,D Urner,R Hackmann,Č Zupančič,T Degener,M Tischhäuser,R Ouared,C Holtzhaußen,D Jamnik,J Zoll,T Case,C Regenfus,C Straßburger,D.V Bugg,R Mccrady,N Djaoshvili,U Strohbusch,H Stöck,M Lakata,M Benayoun,H Kalinowsky,J Brose,L Montanet,M Englert,O Cramer,B Kämmle,R Landua,R Seibert,C Völcker,M Herz,U Thoma,B Kalteyer,M Suffert,C Amsler ,C A Meyer ,M Faessler ,Werner Frank ,J Meier ,N P Hessey ,S Spanier ,Castulus Kolo ,Anthony R Cooper ,F H Heinsius ,P Hidas ,G Pintér ,C N Pinder ,Stefan Bischoff ,J Kisiel ,A J Noble ,I Scott ,D S Armstrong ,E Klempt ,K Peters ,F Ould-Saada ,Dirk Walther ,B S Zou ,B M Barnett ,U Wiedner ,H Koch ,K M Crowe ,C.a Baker ,H P Dietz ,M Kunze ,R P Haddock ,M Doser ,S Von Dombrowski ,P Schmidt

doi:10.1016/0370-2693(96)00574-6

Abstract

Crystal Barrel data on pp → 5π 0 at rest are presented. Mass spectra for 2 π 0 combinations, 3 π 0 and 4 π 0 and decay angular distributions all differ significantly from phase space. We present several ways of fitting the data. All agree on the definite presence of the f 0(1500), observed in its 4 π 0 decay mode. It can decay into ππ(1300) and into σσ where σ stands for the full ππ S-wave amplitude.

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