A study of up in-night annihilations is presented. The 4 pi invariant mass spectrum resulting from the analysis of the five-prong exclusive events, following the annihilation of similar to(100-297) MeV/c ($) over bar n, reveals, besides a large structure centred at similar to 1500 MeV/c(2), some evidences for a new state around 1660 MeV/c(2). RI Galli, Domenico/A-1606-2012; Iazzi, Felice/F-4490-2012; Botta, Elena/G-9742-2012; Villa, Mauro/C-9883-2009; Fontana, Andrea/I-4375-2012; Filippi, Alessandra/I-9530-2012
EVIDENCE OF A NEW STATE AT SIMILAR-TO-1660-MEV/C(2) OBSERVED IN NP-ANNIHILATIONS
USAI, GIANLUCA;
1994-01-01
Abstract
A study of up in-night annihilations is presented. The 4 pi invariant mass spectrum resulting from the analysis of the five-prong exclusive events, following the annihilation of similar to(100-297) MeV/c ($) over bar n, reveals, besides a large structure centred at similar to 1500 MeV/c(2), some evidences for a new state around 1660 MeV/c(2). RI Galli, Domenico/A-1606-2012; Iazzi, Felice/F-4490-2012; Botta, Elena/G-9742-2012; Villa, Mauro/C-9883-2009; Fontana, Andrea/I-4375-2012; Filippi, Alessandra/I-9530-2012
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