Unveiling the K-1(1270) double-pole structure in the (B)over-bar -> J/psi rho(K)over-bar and (B)over-bar -> J/psi(K)over-bar*pi decays
Dias
J
M
author
Toledo
G
author
Roca
L
author
Oset
E
author
2021
English
By looking at the pseudoscalar-vector meson spectra in the (B) over bar -> J/psi rho(K) over bar and (B) over bar -> J/psi(K) over bar*pi 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 (P) and vector (V) mesons. The K-1 (1270) resonance is dynamically generated through these interactions in coupled channels and influences the shape of the invariant mass distributions under consideration. We show how these 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.
WOS:000664520700018
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text
https://arxiv.org/abs/2102.08402
https://arxiv.org/abs/2102.08402
10.1103/PhysRevD.103.116019
Dias_etal2021
Physical Review D
Phys. Rev. D
2021
Amer Physical Soc
continuing
periodical
academic journal
103
11
116019
13pp
2470-0010