The evasion of helicity selection rule in ${\chi }_{c1}\to VV$ and ${\chi }_{c2}\to VP$ via intermediate charmed meson loops

Abstract

The hadronic decays of ${\chi }_{c1}\to VV$ and ${\chi }_{c2}\to VP$ are supposed to be suppressed by the helicity selection rule in the pQCD framework. With an effective Lagrangian method, we show that the intermediate charmed meson loops can provide a mechanism for the evasion of the helicity selection rule, and result in sizeable decay branching ratios in some of those channels. The theoretical predictions can be examined by the forthcoming BES-III data in the near future.

arXiv comment9 pages, 5 figures; minor changes: modified introduction, references added

References in corpus (24)

• Rigorous QCD Analysis of Inclusive Annihilation and Production of Heavy Quarkonium
• Automatized One-Loop Calculations in 4 and D dimensions
• Phenomenology of Heavy Meson Chiral Lagrangians
• Charmonium
• Final State Interactions in Hadronic B Decays
• Color-octet quarkonia production
• Charming penguins in B => K* pi, K (rho,omega,phi) decays
• Rigorous QCD Predictions for Decays of P-Wave Quarkonia
• Charming Penguins in B decays
• First Measurement of Gamma(D*+) and Precision Measurement of m_D*+ - m_D0
• Nonfactorizable contributions in B decays to charmonium: the case of $B^{-}\to K^{-}{h}_c$
• Production of $f_0(1710)$, $f_0(1500)$, and $f_0(1370)$ in $J/\psi$ hadronic decays
• $B^{-}\to K^{-}{\chi }_{c0}$ decay from charmed meson rescattering
• Intrinsic Charm of Vector Mesons: A Possible Solution of the "rho pi" Puzzle
• Towards a dynamical understanding of the non-$D\bar{D}$ decay of $\psi (3770)$
• The hidden charm decay of Y(4140) by the rescattering mechanism
• Decays of $J/\psi$ and ${\psi }^{\prime }$ into vector and pseudoscalar meson and the pseudoscalar glueball-$q\bar{q}$ mixing
• Psi'' decays to charmless final states
• Implications of light-quark admixtures on charmonium decays into meson pairs
• Charming penguin contributions to B => K π
• Exclusive $et{a}_b$ decay to double $J/\psi$ at next-to-leading order in $alph{a}_s$
• Charming penguin contributions to charmless B decays into two pseudoscalar mesons
• 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

Cited by in corpus (35)

• More hidden heavy quarkonium molecules and their discovery decay modes
• Further study of the helicity selection rule evading mechanism in ${\eta }_c$, ${\chi }_{c0}$ and $h_c$ decaying to baryon anti-baryon pairs
• Investigating possible decay modes of $Y(4260)$ under the $D_1(2420)\bar{D}+c.c$ molecular state ansatz
• Hidden-charmonium decays of $Z_c(3900)$ and $Z_c(4025)$ in intermediate meson loops model
• Open charm effects in the explanation of the long-standing "$\rho \pi$ puzzle"
• Further understanding of the non-$D\bar{D}$ decays of $\psi (3770)$
• Explaining the anomalous ${\rm Y}(5S)\to {\chi }_{bJ}\omega$ decays through the hadronic loop effect
• Long-distant contribution and ${\chi }_{c1}$ radiative decays to light vector meson
• Observation of ${\chi }_{c1}$ decays into vector meson pairs $\varphi \varphi$, $\omega \omega$, and $\omega \varphi$
• Open charm effects in $e^{+}{e}^{-}\to J/\psi \eta$, $J/\psi {\pi }^0$ and $\varphi {\eta }_c$
• Understanding the branching ratios of χ_{c1}\toϕϕ, ωω, ωϕobserved at BES-III
• Updated study of the ${\eta }_c$ and ${\eta }_c^{\prime }$ decays into light vector mesons
• Anomalous radiative transitions between $h_b(nP)$ and ${\eta }_b(mS)$ and hadronic loop effect
• Understanding the radiative decays of vector charmonia to light pseudoscalar mesons
• Radiative decays of $f_1(1285)$ as the $K^{\ast }\bar{K}$ molecular state
• Hidden-charm decays of $X(3915)$ and $Z(3930)$ as the P-wave charmonia
• Search for ${\eta }_c^{\prime }$ decays into vector meson pairs
• Detecting the polarization in ${\chi }_{cJ}\to \varphi \varphi$ decays to probe hadronic loop effect
• Puzzles in charmonium decays
• Study of the processes ${\chi }_{cJ}\to {\Xi }^{-}{\bar{\Xi }}^{+}$ and ${\Xi }^0{\bar{\Xi }}^0$
• Observation of OZI suppressed decays ${\chi }_{cJ}\to \omega \varphi$
• Observation of ${\eta }_c$ decay into ${\Sigma }^{+}{\bar{\Sigma }}^{-}$ and ${\Xi }^{-}{\bar{\Xi }}^{+}$ final states
• Observation of the decay ${\chi }_{cJ}\to {\Omega }^{-}{\bar{\Omega }}^{+}$
• First Measurements of ${\chi }_{cJ}\to {\Sigma }^{-}{\bar{\Sigma }}^{+}(J=0,1,2)$ Decays
• Improved measurements of ${\chi }_{cJ}\to {\Sigma }^{+}{\bar{\Sigma }}^{-}$ and ${\Sigma }^0{\bar{\Sigma }}^0$ decays
• Experimental study of psi' decays to K+K- pi^0 and K+K- eta
• Observation of the helicity-selection-rule suppressed decay of the ${\chi }_{c2}$ charmonium state
• Improved measurements of branching fractions for ${\eta }_c\to \varphi \varphi$ and $\omega \varphi$
• Evasion of HSR in the charmless decays of excited $P$-wave charmonia
• Combined study of the isospin-violating decay $D_s^{\ast }\to D_s{\pi }^0$ and radiative decay $D_s^{\ast }\to D_s\gamma$ with intermediate meson loops
• Novel insights into the $\gamma {\gamma }^{\ast }\to {\pi }^0$ transition form factor
• Exclusive decays ${\chi }_{cJ}\to K^{\ast }(892)K$ within the effective field theory framework
• Measurements of charmonia decays from BESIII
• Study the decays of ${\chi }_{cJ}(J=0,1,2)$ to light meson pairs with SU(3) flavor symmetry/breaking analysis
• Open charm scenarios