Probing scalar meson structures in ${\chi }_{c1}$ decays into pseudoscalar and scalar

Abstract

We evaluate the decay branching ratios of ${\chi }_{c1}\to PS$, in a quark model parametrization scheme, where $P$ and $S$ stand for pseudoscalar and scalar meson, respectively. An interesting feature of this decay process is that the $c\bar{c}$ annihilate via the pQCD hair-pin diagram is supposed to be dominant. Hence, this decay process should be sensitive to the quark components of the final-state light mesons, and would provide a great opportunity for testing the mixing relations among the scalar mesons, i.e. $f_0(1370)$, $f_0(1500)$ and $f_0(1710)$, by tagging the final state pseudoscalar mesons.

9 pages and 6 eps figures; Enhanced discussion on the dominance of hair-pin diagram is added. Revised version to appear in IJMPA

References in corpus (16)

• Heavy quarkonium: progress, puzzles, and opportunities
• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• Resonances in $J/\psi \to \varphi {\pi }^{+}{\pi }^{-}$ and $\varphi K^{+}{K}^{-}$
• Scalar nonet quarkonia and the scalar glueball: mixing and decays in an effective chiral approach
• Production of $f_0(1710)$, $f_0(1500)$, and $f_0(1370)$ in $J/\psi$ hadronic decays
• Scalar Glueball, Scalar Quarkonia, and their Mixing
• Mechanisms for ${\chi }_{cJ}\to \varphi \varphi$ Decays
• Partial Wave Analysis of ${\chi }_{c0}\to {\pi }^{+}{\pi }^{-}{K}^{+}{K}^{-}$
• Decays of $J/\psi$ and ${\psi }^{\prime }$ into vector and pseudoscalar meson and the pseudoscalar glueball-$q\bar{q}$ mixing
• Amplitude analyses of the decays chi_c1 -> eta pi+ pi- and chi_c1 -> eta' pi+ pi-
• A coherent study of ${\chi }_{c0,2}\to VV$, $PP$ and $SS$
• χ_{c0,2} decay into light meson pairs and its implication of the scalar meson structures
• Obervation of χ_{cJ}--> omega omega decays
• Measurements of $\psip$ decays into $\gamma K\bar{K}\pi$ and $γη\pipi$
• Observation of $K^{\ast }(892{)}^0{\bar{K}}^{\ast }(892{)}^0$ in ${\chi }_{cJ}$ Decays
• chi_c0 and chi_c2 Decays into eta eta, eta eta', and eta' eta' Final States

Cited by in corpus (3)

• Measurement of ${\chi }_{cJ}$ decaying into ${\eta }^{\prime }{K}^{+}{K}^{-}$
• Photoproduction of $f_0(980)$ and $f_0(1500)$ resonances off a proton target
• Study the decays of ${\chi }_{cJ}(J=0,1,2)$ to light meson pairs with SU(3) flavor symmetry/breaking analysis