On the possibility of f 0 observation in low energy pp collisions

Abstract

Abstract. Within the meson-exchange model we calculate f0-meson production cross section in πN and N N reactions and investigate the possibility for f0 observation via the KK decay mode in pp collisions. Our studies indicate that an extraction of the f0 signal is unlikely due to the large background from other reaction channels.PACS. 13.75.Cs Nucleon-nucleon interactions -13.75.Gx Pion-baryon interactions

Perspectives of production in , and Be reactions at SIS energies

“…[34] since our studies in Ref. [50] have indicated that the multiplicity of scalar mesons in pp reactions is very small in the energy regime of interest.…”

Combined analysis of theK+K−interaction using near-thresholdpp→ppK+Silarski1, Moskal2 2013Phys. Rev. C121190View full textAdd to dashboardCite

“…In fact, up to now in these reactions there has not been found any signal of these particles. The theoretical estimations result in negligible cross sections for the pp → f 0 pp → K + K − pp resonant contribution with respect to the non-resonant one [37] (the upper limit of the cross section for this reaction is estimated to be about 1 × 10 −4 nb/MeV at Q = 5 MeV and 4 × 10 −2 nb/MeV at 50 MeV [37]). Also the branching ratios of f 0 (980) and a 0 (980) are very poorly known.…”

“…According to Ref. [37] for energies up to Q = 115 MeV (DISTO measurement [19]) the production of resonant K + K − pairs should not produce any significant enhancement in the K + K − invariant mass.…”

Nucleon pole contribution in the $pp\to ppK^+K^-$ reaction below the $ϕ$ meson threshold

“…This approach has been used in the investigation of the FSI of mesons in different processes in order to get a better understanding of the nature of the meson resonances as shown in Refs. [24][25][26][27] It has been suggested that the Λ(1405) could play an essential role on the kaon pair production through the pp → pK + (Λ(1405) → K − p) process [28] and this process seems more important than the contributions from the scalar mesons [11,29]. Indeed, the role played by the Λ(1405) state is crucial for reproducing the K − p mass distribution [12,30].…”