Few-body systems consisting of mesons
A Martinez Torres, KP Khemchandani, L Roca… - Few-Body Systems, 2020 - Springer
We present a work which is meant to inspire the few-body practitioners to venture into the
study of new, more exotic, systems and to hadron physicists, working mostly on two-body …
study of new, more exotic, systems and to hadron physicists, working mostly on two-body …
Two-pole structures as a universal phenomenon dictated by coupled-channel chiral dynamics
In the past two decades, one of the most puzzling phenomena discovered in hadron physics
is that a nominal hadronic state can actually correspond to two poles on the complex energy …
is that a nominal hadronic state can actually correspond to two poles on the complex energy …
Three-Body Dynamics of the Resonance from Lattice QCD
Resonant hadronic systems often exhibit a complicated decay pattern in which three-body
dynamics play a relevant or even dominant role. In this work we focus on the a 1 (1260) …
dynamics play a relevant or even dominant role. In this work we focus on the a 1 (1260) …
Pole position of the resonance in a three-body unitary framework
Masses, widths, and branching ratios of hadronic resonances are quantified by their pole
positions and residues with respect to transition amplitudes on the Riemann sheets of the …
positions and residues with respect to transition amplitudes on the Riemann sheets of the …
[HTML][HTML] Analysis of the η1 (1855) as a KK¯ 1 (1400) molecular state
F Yang, HQ Zhu, Y Huang - Nuclear Physics A, 2023 - Elsevier
In this work, we study the radiative and strong decay of S-wave KK¯ 1 (1400) molecular state
within the effective Lagrangians approach and find the relation between the KK¯ 1 (1400) …
within the effective Lagrangians approach and find the relation between the KK¯ 1 (1400) …
f1(1285) decays into a0(980)π0, f0(980)π0 and isospin breaking
F Aceti, JM Dias, E Oset - The European Physical Journal A, 2015 - Springer
We evaluate the decay width for the processes f 1 (1285)→ π 0 a 0 (980) and f 1 (1285)→ π
0 f 1 (980) taking into account that all three resonances are dynamically generated from the …
0 f 1 (980) taking into account that all three resonances are dynamically generated from the …
[HTML][HTML] Triangle singularity in the decays
WH Liang, HX Chen, E Oset, E Wang - The European Physical Journal C, 2019 - Springer
Abstract We study the\(J/\psi\rightarrow K^+ K^-f_0 (980)(a_0 (980))\) reaction and find that
the mechanism to produce this decay develops a triangle singularity around\(M_ {\mathrm …
the mechanism to produce this decay develops a triangle singularity around\(M_ {\mathrm …
Revising the resonance
VR Debastiani, F Aceti, WH Liang, E Oset - Physical Review D, 2017 - APS
We have studied the production and decay of the f 1 (1285) into π a 0 (980) and K* K¯ as a
function of the mass of the resonance and find a shoulder around 1400 MeV, tied to a …
function of the mass of the resonance and find a shoulder around 1400 MeV, tied to a …
Vertex corrections due to the triangle singularity mechanism in the light axial vector meson couplings to cc
MC Du, Y Cheng, Q Zhao - Physical Review D, 2022 - APS
The light axial vector mesons can couple to K* K¯+ cc in an S wave at the tree level.
Because of the near-threshold S-wave interactions, the couplings can be affected by the …
Because of the near-threshold S-wave interactions, the couplings can be affected by the …
Anomalous enhancement of the isospin-violating production by a triangle singularity in
LR Dai, R Pavao, S Sakai, E Oset - Physical Review D, 2018 - APS
The decay of Λ c+ into π+ π 0 Λ (1405) with the Λ (1405) decay into π 0 Σ 0 through a
triangle diagram is studied. This process is initiated by Λ c+→ π+ K¯* N, and then the K¯ …
triangle diagram is studied. This process is initiated by Λ c+→ π+ K¯* N, and then the K¯ …