Zobrazeno 1 - 10
of 44
pro vyhledávání: '"Feijoo, Albert."'
Autor:
Feijoo, Albert, Vidaña, Isaac
We analyze the possible existence of a strangeness $S=-3$, isospin $I=1$ pentaquark state $P_{sss}$ generated dynamically from the $\bar{K}\Xi$ interaction. We employ a unitarized scheme in coupled channels based on the chiral Lagrangian expanded up
Externí odkaz:
http://arxiv.org/abs/2411.18248
We have calculated the femtoscopic correlation functions of meson-baryon pairs in the strangeness $S=-1$ sector, employing a unitarized chiral interaction model up to next-to-leading order. We will show preliminary results for the $\pi^-\Lambda$ corr
Externí odkaz:
http://arxiv.org/abs/2410.21058
Autor:
Feijoo, Albert, Wang, Wen-Fei, Xiao, Chu-Wen, Wu, Jia-Jun, Oset, Eulogio, Nieves, Juan, Zou, Bing-Song
Publikováno v:
Physics Letters B 839 (2023) 137760
We have a look at the $P_{cs}$ states generated from the interaction of $\bar D^{(*)} \Xi^{(\prime*)}_c$ coupled channels. We consider the blocks of pseudoscalar-baryon $({\frac12}^+, {\frac32}^+)$ and vector-baryon $({\frac12}^+, {\frac32}^+)$, and
Externí odkaz:
http://arxiv.org/abs/2212.12223
Publikováno v:
PhysRevD.106, 116004 (2022)
We study the interaction of meson-baryon coupled channels carrying quantum numbers of $\Omega_{cc}$ , $\Omega_{bb}$ and $\Omega_{bc}$ presently under investigation by the LHCb collaboration. The interaction is obtained from an extension of the local
Externí odkaz:
http://arxiv.org/abs/2208.14858
We present a chiral ${\bar K}N$ interaction model that has been developed and optimized in order to account for the experimental data of inelastic ${\bar K}N$ reaction channels that open at higher energies. In particular, we study the effect of the h
Externí odkaz:
http://arxiv.org/abs/2107.10560
We study for the first time the $p\Sigma^-\to K^-d$ and $K^-d\to p\Sigma^-$ reactions close to threshold and show that they are driven by a triangle mechanism, with the $\Lambda(1405)$, a proton and a neutron as intermediate states, which develops a
Externí odkaz:
http://arxiv.org/abs/2105.09654
A vector meson exchange model based on effective Lagrangians is used to build the meson--baryon interaction in the charm $+1$, strangeness $-2$ and isospin $0$ sector. The s-wave scattering amplitudes resulting from the unitarization in coupled-chann
Externí odkaz:
http://arxiv.org/abs/1812.03898
Publikováno v:
Journal of Physics: Conf. Series 1137 (2019) 012040
A meson-baryon interaction in the charm $+1$, strangeness $-2$ and isospin $0$ sector is built from a t-channel vector meson exchange model employing effective Lagrangians. The implementation of coupled-channel unitarization in the s-wave scattering
Externí odkaz:
http://arxiv.org/abs/1812.03890
Publikováno v:
Phys. Rev. C 99, 035211 (2019)
A study of the meson-baryon interaction in the $S=-1$ sector is performed, employing a chiral SU(3) lagrangian up to next-to-leading order (NLO) and implementing unitarization in coupled channels. The model is constrained by a large set of experiment
Externí odkaz:
http://arxiv.org/abs/1810.07600
We explore the possibility that some of the five narrow $\Omega_c$ resonances recently observed at LHCb could correspond to pentaquark states, structured as meson-baryon bound states or molecules. The interaction of the low-lying pseudoscalar mesons
Externí odkaz:
http://arxiv.org/abs/1709.08737