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Status of the η′ (957) Meson
Author(s) -
Upadhyay P. N.
Publication year - 1980
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.19804920102
Subject(s) - physics , meson , particle physics , nuclear physics , quark , singlet state , excited state
According to the quark model, a singlet with I G J P = 0 + 0 − is predicted to exist. Experimentally observed, the η′(957) and the E (1420) mesons both have the same properties. However, the J P the η′ meson may be 0 − or 2 − . Recent experimental results along with some theoretical discussions on the production and the decay of the η′ meson are presented here. Its main decay modes are ππη, π + π − γ (via ϱ° γ) und γγ.