Decay of light scalar mesons into vector-photon and into pseudoscalar mesons

• Verfasst von: Giacosa, Francesco [VerfasserIn]
• Verfasst von: Pagliara, Giuseppe [VerfasserIn]
• Titel: Decay of light scalar mesons into vector-photon and into pseudoscalar mesons
• Verf.angabe: Francesco Giacosa, Giuseppe Pagliara
• Jahr: 2010
• Umfang: 18 S.
• Fussnoten: Available online 16 December 2009 ; Gesehen am 09.03.2023
• Titel Quelle: Enthalten in: Nuclear physics <Amsterdam> / A
• Ort Quelle: Amsterdam : North-Holland Publ. Co., 1967
• Jahr Quelle: 2010
• Band/Heft Quelle: 833(2010), 1, Seite 138-155
• ISSN Quelle: 1873-1554
• DOI: doi:10.1016/j.nuclphysa.2009.12.007
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Light scalar mesons
• Sach-SW: Radiative decays
• Sach-SW: Tetraquark states
• K10plus-PPN: 1838766154

Abstract

The decays of a light scalar meson into a vector meson and a photon (S→Vγ) are evaluated in the tetraquark and quarkonium assignments of the scalar states. A link with the radiative decays ϕ→Sγ is established: experimental results for S→Vγ will make it possible to decide if the direct, quark-loop contribution to ϕ→Sγ or the kaon-loop contribution is dominant. Also strong decays S→PP - where P denotes a pseudoscalar meson - are investigated: within our scheme, the tetraquark assignment works better than the quarkonium one.