  Decays into two charged pions of the f0(1370) are the main source of an
isolated structure localized between 1.2 and 1.5 GeV in the two charged pions
mass spectrum measured in pp Central Exclusive Production (CEP) at 200 GeV at
very low four momentum transfer ltl by the STAR experiment. These data confirm
in the two charged pions decay channel the existence of the f0(1370) as an
isolated well identified structure previously observed in K+K-, KsKs, 4 charged
pions, two charged and two neutral pions and 4 neutral pions decays measured in
antiproton annihilations at rest. The ensemble of these data point at a high
gluon content of the f0(1370). CEP interactions at higher energies favour
production of 0++ and 2++ mesons. Selection of events with lower ltl at both
proton vertices suppresses 2++ structures. LHC runs dedicated to pp CEP
measurements at low ltl could then provide a unique source of all the low
energy scalars. This would make it clear if and where scalar gluonium is
resident and the nature (composition in terms of quarks, antiquarks and gluons)
of f0(500), f0(980), f0(1370), f0(1500) and f0(1710).
