F. Antinori et al., A FURTHER STUDY OF THE CENTRALLY PRODUCED PI(-) AND PI(+)PI(-)PI(+)PI(-) CHANNELS IN PP INTERACTIONS AT 300 AND 450 GEV()PI()C/, Physics letters. Section B, 353(4), 1995, pp. 589-594
An analysis of the centrally produced pi(+)pi(-) and pi(+)pi(-)pi(+)pi
(-) mass spectra from the WA76 and WA91 experiments is presented, whic
h shows that in the pi(+)pi(-)pi(+)pi(-) channel there are two new sta
tes, the f(0)(1450) and f(2)(1900). There is another new state in the
pi(+)pi(-) channel with M = 1497 +/- 30 MeV and Gamma = 199 +/- 30 MeV
, which is compatible with the f(0)(1520) observed by the Crystal Barr
el experiment. Another interpretation is discussed, where the 1450 and
1497 GeV structures are explained as being due to an interference eff
ect between the f(0)(1365) and f(0)(1520).