Evidence of Q2Q2 mesons in pn annihilations and reactions

K. F. Liu, B. A. Li

Research output: Contribution to journalArticlepeer-review

37 Scopus citations


A new resonance at 1480 MeV with a width of 110 MeV is found in pn annihilations in the channel pn-X0(1480)-00. Its mass, width, spin, and parity are shown to be consistent with the 00 enhancement observed in reactions. Together with the suppression in the +- data which requires the admixture of an isotensor structure, this 00 resonance in pn annihilation and reactions and their small branching ratios represent the best evidence yet for Q2Q2 states. A - resonance in pn annihilations which would betray the exotic isotensor nature of the resonance is predicted.

Original languageEnglish
Pages (from-to)2288-2291
Number of pages4
JournalPhysical Review Letters
Issue number22
StatePublished - 1987

ASJC Scopus subject areas

  • General Physics and Astronomy


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