arXiv subjects

G. Toledo

Publications and source records attributed to G. Toledo.

2 recordsLinked to original sources

arXiv2021

Unveiling the $K_1(1270)$ double-pole structure in the $\bar{B}\to J/ψρ\bar{K}$ and $\bar{B}\to J/ψ\bar{K}^*π$ decays

By looking at the pseudoscalar-vector meson spectra in the $\bar{B}\to J/ψρ\bar{K}$ and $\bar{B}\to J/ψ\bar{K}^*π$ weak decays, we theoretically investigate the double-pole structure of the $K_1(1270)$ resonance by using the Chiral Unitary approach to account for the final state interactions between the pseudoscalar and vector mesons. The $K_1(1270)$ resonance appears as dynamically generated through these interactions in coupled channels and influence the shape of the invariant mass distributions under consideration. We show how those shapes are affected by the $K_1(1270)$ double-pole structure to confront the results from our model with future experiments that might investigate the $PV$ spectra in these decays.

hep-ph↗

arXiv2020

$J/ψ\to γππ$, $γπ^0η$ reactions and the $f_0(980)$ and $a_0(980)$ resonances

We study the $J/ψ\to γπ^+ π^-$, $γπ^0 η$ reactions from the perspective that they come from the $J/ψ\to ϕ(ω) π^+ π^-, ρ^0π^0 η$ reactions, where the $ρ^0$, $ω$, and $ϕ$ get converted into a photon via vector meson dominance. Using models successfully used previously to study the $J/ψ\to ω(ϕ) ππ$ reactions, we make determinations of the invariant mass distributions for $π^+ π^-$ in the regions of the $f_0(500)$, $f_0(980)$, and for $π^0 η$ in the region of the $a_0(980)$. The integrated differential widths lead to branching ratios below present upper bounds, but they are sufficiently large for future check in updated facilities.

hep-ph↗