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A study of the centrally produced eta pi0 and eta pi- systems in pp interactions at 450 GeV/c

The WA102 collaboration Barberis, D. ; Binon, F.G. ; Close, F.E. ; et al.
Phys.Lett.B 488 (2000) 225-233, 2000.
Inspire Record 529900 DOI 10.17182/hepdata.41733

A partial wave analysis of the centrally produced eta pi0 and eta pi- channels has been performed in pp collisions using an incident beam momentum of 450 GeV/c. Clear a0(980) and a2(1320) signals have been observed in S and D+ waves respectively. The dPT, phi and |t| distributions of these resonances are presented.

2 data tables
Table 1

The variable ABS(PT(P=3)-PT(P=4)) is used as a glueball-QUARK QUARKBAR filter (see F.E.Close and A.Krik, PL 397B, 333 (1997)). SIG(C=TOT) stands for the cross section for the whole ABS(PT(P=3)-PT(P=4))interval.

Table 2

The variable ABS(PT(P=3)-PT(P=4)) is used as a glueball-QUARK QUARKBAR filter (see F.E.Close and A.Krik, PL 397B, 333 (1997)).


A Study of the centrally produced pi+ pi- pi0 channel in p p interactions at 450-GeV/c

The WA102 collaboration Barberis, D. ; Beusch, W. ; Binon, F.G. ; et al.
Phys.Lett.B 422 (1998) 399-404, 1998.
Inspire Record 466032 DOI 10.17182/hepdata.41629

The reaction pp -> pf (pi+pi-pi0) ps has been studied at 450 GeV/c in an experiment designed to search for gluonic states. A spin analysis has been performed and the dPT filter applied. The analysis confirms the previous observation that all undisputed qqbar states are suppressed at small dPT. In addition, a clear difference is observed in the production mechanism for the eta and omega.

1 data table
Table 1

SIG(C=TOT) denotes the total cross section for each resonance. The variable ABS(PT(P=3)-PT(P=4)) is used as a glueball-QUARK QUARKBAR filter (see F.E.Close and A.Krik, PL 397B, 333 (1997)).