Exclusive scalar glueball $f_0(1500)$ production for FAIR and J-PARC energy range

Details Exclusive scalar glueball $f_0(1500)$ production for FAIR and J-PARC energy range Exclusive scalar glueball $f_0(1500)$ production for FAIR and J-PARC energy range

2008-06-30

arxiv.org/abs/0806.4896v1

Physics

Nuclear Physics

Nuclear Theory

19 pages, 12 figures

Scientific paper

We evaluate differential distributions for exclusive scalar $f_0(1500)$ production for $p \bar p \to N_1 N_2 f_0$ (FAIR@GSI) and $p p \to p p f_0$ (J-PARC@Tokai). Both QCD diffractive and pion-pion meson exchange current (MEC) components are included. Rather large cross sections are predicted. The pion-pion component, never discussed in the literature, dominates close to the threshold while the diffractive component takes over for larger energies. 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. The production of $f_0(1500)$ close to threshold could limit the so-called $\pi NN$ form factor in the region of larger pion virtualities.

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