Study of hadronicJ/ψdecays involvingφandωproduction

Abstract

Hadronic decays of the J / $ involving I$ and w production are investigated: J/+-+&+a-, $ K + K -, +K!Kg, w K + K -, ~K~O K ; , I$K*x, 4pp. Except I$K * E and $pp, these three-body final states are dominated by quasi-two-body productions. A detailed study of the fo(975) production is presented. The analysis shows evidence for the f2(1720) being associated to both o and 4. An upper limit is given for the I$q( 1440) branching ratio.

Parameters of scalar resonances from the combined analysis of data on processesππ→ππ,KK¯Surovtsev1, Bydžovský2, Kamiński3 et al. 2014Phys. Rev. D84110View full textAdd to dashboardCite

“…This suggestion was verified in the model-independent two-channel analysis of data on ππ → ππ, KK [6]. In the presented article we confirm this assumption in the three-channel analysis of data on ππ → ππ, KK, ηη and decays J/ψ → φππ, φKK from the DM2, Mark III, and BES II Collaborations [7][8][9]. This is necessary, especially, as the wide states provoke many questions which should be answered.…”

“…In the combined analysis of data on the isoscalar S waves of processes ππ → ππ, KK, ηη [18][19][20][21][22]24] we added data on decays J/ψ → φππ, φKK from the Mark III [7], DM2 [8] and BES II [9] Collaborations. Formalism for calculating the di-meson mass distributions of these decays can be found in Refs.…”

Unitary chiral dynamics in decays and the role of scalar mesons

“…The experimental data J/Ψ → φK + K − has been taken from DM2 [9] and MARK-III [10] experiments. There are large uncertainties in the total normalization of the experimental data given the smallness of the phase space region considered.…”

Structure of the scalar mesonsf0(980) anda0(980)

“…In order to discriminate between different models Morgan and Pennington [4,5] recently investigated new data on the decay J/ψ → φππ/φKK [6,7] concluding that a conventional Breit-Wigner (i.e. qq) structure is most probable for the f 0 (975).…”