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- W2000234074 abstract "We evaluate differential distributions for exclusive scalar f0(1500) meson (glueball candidate) production for pp¯→N1N2f0 ([email protected]) and pp→ppf0 ([email protected]). Both QCD diffractive, pion–pion meson exchange current (MEC) components as well as double-diffractive mechanism with intermediate pionic loop are calculated for the first time in the literature. The pion–pion component, which can be reliably calculated, dominates close to the threshold while the diffractive component may take over only for larger energies. At the moment only upper limit for the QCD-diffractive component can be obtained. The diffractive component is calculated based on two-gluon impact factors as well as in the framework of Khoze–Martin–Ryskin approach proposed for diffractive Higgs boson production. Different unintegrated gluon distribution functions (UGDFs) from the literature are used. Rather large cross sections due to pion–pion fusion are predicted for PANDA energies, where the gluonic mechanism is shown to be negligible. The production of f0(1500) close to threshold could limit the so-called πNN form factor in the region of larger pion virtualities. We discuss in detail the two-pion background to the production of the f0(1500) meson." @default.
- W2000234074 created "2016-06-24" @default.
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- W2000234074 date "2009-07-01" @default.
- W2000234074 modified "2023-09-27" @default.
- W2000234074 title "Exclusive scalar meson production for energy ranges available at the GSI Facility for Antiproton and Ion Research (GSI-FAIR) and at the Japan Proton Accelerator Research Complex (J-PARC)" @default.
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- W2000234074 doi "https://doi.org/10.1016/j.nuclphysa.2009.05.072" @default.
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