Radiative Decays X(3872) -> psi(2S)+gamma and psi(4040) -> X(3872)+gamma in Effective Field Theory

Abstract

Heavy hadron chiral perturbation theory (HHchiPT) and XEFT are applied to the decays X(3872) -> psi(2S) + gamma and psi(4040) -> X(3872) + gamma under the assumption that the X(3872) is a molecular bound state of neutral charm mesons. In these decays the emitted photon energies are 181 MeV and 165 MeV, respectively, so HHchiPT can be used to calculate the underlying D^0 bar{D}^{0*}+ bar{D}^0 D^{0*} -> psi(2S) + gamma or psi(4040) -> (D^0 bar{D}^{0*}+ bar{D}^0 D^{0*}) + gamma transition. These amplitudes are matched onto XEFT to obtain decay rates. The decays receive contributions from both long distance and short distance processes. We study the polarization of the psi(2S) in the decay X(3872) -> psi(2S) + gamma and the angular distribution of X(3872) in the decay psi(4040) -> X(3872) + gamma and find they can be used to differentiate between different decay mechanisms as well as discriminate between 2^{-+} and 1^{++} quantum number assignments of the X(3872).

13 pages, 4 figures

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Cited by in corpus (45)

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• Evidence for the decay $X(3872)\to \psi (2S)\gamma$
• Production of the X(3872) in charmonia radiative decays
• Could the near-threshold $XYZ$ states be simply kinematic effects?
• Heavy Quark Symmetry Predictions for Weakly Bound B-Meson Molecules
• Heavy hadronic molecules with pion exchange and quark core couplings: a guide for practitioners
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• $T_{cc}^{+}$ decays: Differential spectra and two-body final states
• Quarkonium Contribution to Meson Molecules
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• Strong decays of higher charmonium states into open-charm meson pairs
• Study of open-charm decays and radiative transitions of the X(3872)
• A Phenomenological analysis on isospin-violating decay of $X(3872)$
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• Hadronic Loops versus Factorization in EFT calculations of $X(3872)\to {\chi }_{cJ}{\pi }^0$
• The decay of the X(3872) into χ_{cJ} and the Operator Product Expansion in XEFT
• Line shapes in Υ(5S) \to B^{(*)} \bar{B}^{(*)}πwith Z(10610) and Z(10650) using effective field theory
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• Unquenched quark-model calculation of X(3872) electromagnetic decays
• Using the decay ψ(4160) -> X(3872) γ to probe the molecular content of the X(3872)
• Revisiting $X(3872)\to D^0{\bar{D}}^0{\pi }^0$ in XEFT
• Threshold Effects and the Line Shape of the X(3872) in Effective Field Theory
• EM Decay of X(3872) as the $1{}^1{D}_2(2^{-+})$ charmonium
• Dimesonic states with the heavy-light flavour mesons
• Hadronic decays of the heavy-quark-spin molecular partner of $T_{cc}^{+}$
• The possibility of $X(4014)$ as a $D^{\ast }{\bar{D}}^{\ast }$ molecular state
• The nature of $Z_b$ states from a combined analysis of ${\rm Y}(5S)\to h_b(mP){\pi }^{+}{\pi }^{-}$ and ${\rm Y}(5S)\to B^{(\ast )}{\bar{B}}^{(\ast )}\pi$
• On the Role of Charmed Meson Loops in Charmonium Decays
• Possible precise measurements of the $X(3872)$ mass with the $e^{+}{e}^{-}\to {\pi }^0\gamma X(3872)$ and $p\bar{p}\to \gamma X(3872)$ reactions
• B-meson Semi-inclusive Decay to $2^{-+}$ Charmonium in NRQCD and X(3872)
• Charmonium description from a generalized screened potential model
• The role of electromagnetic interaction in the $X(3872)$ and its analogs
• Study of $e^{+}{e}^{-}\to \omega X(3872)$ and $\gamma X(3872)$ from 4.66 to 4.95 GeV
• The nature of near-threshold XYZ states
• Two-body strong decays of the hidden-charm tetraquark molecular states via the QCD sum rules
• ${\bar{D}}^0{D}^{0\ast }$ $(D^0{\bar{D}}^{0\ast })$ System in QCD-Improved Many Body Potential
• Exotic Quarkonium Spectroscopy: X(3872), Z_b(10610), and Z_b(10650) in Non-Relativistic Effective Theory
• Electromagnetic probes revealing the inner structure of the ${\Lambda }_c(2940)$