Theoretical study in the ${\bar{B}}^0\to J/\psi {\bar{K}}^{\ast 0}{K}^0$ and ${\bar{B}}^0\to J/\psi f_1(1285)$ decays

Abstract

We study the decay processes of ${\bar{B}}^0\to J/\psi {\bar{K}}^{\ast 0}{K}^0$ and ${\bar{B}}^0\to J/\psi f_1(1285)$ to analyse the $f_1(1285)$ resonance. By the calculation within chiral unitary approach where $f_1(1285)$ resonance is dynamically generated from the $K^{\ast }\bar{K}-c.c.$ interaction, we find that the ${\bar{K}}^{\ast 0}{K}^0$ invariant mass distribution has a clear broad peak. Such broad peak has been understood as the signal of the $f_1(1285)$. Finally, we obtain a theoretical result $R_t={\Gamma }_{{\bar{B}}^0\to J/\psi {\bar{K}}^{\ast 0}{K}^0}/{\Gamma }_{{\bar{B}}^0\to J/\psi f_1(1285)}$ which is expected to be compared with the experimental data.

5 figures, 7 pages

References in corpus (13)

• Glueballs, Hybrids, Multiquarks. Experimental facts versus QCD inspired concepts
• $B^0$ and $B_s^0$ decays into $J/\psi$ $f_0(980)$ and $J/\psi$ $f_0(500)$ and the nature of the scalar resonances
• $S$-wave resonance contributions to the $B_{(s)}^0\to J/\psi {\pi }^{+}{\pi }^{-}$ and $B_s\to {\pi }^{+}{\pi }^{-}{\mu }^{+}{\mu }^{-}$ decays
• Predictions for the ${\Lambda }_b\to J/\psi \Lambda (1405)$ decay
• $f_1(1285)$ decays into $a_0(980){\pi }^0$, $f_0(980){\pi }^0$ and isospin breaking
• Pseudocalar meson and vector meson interactions and dynamically generated axial-vector mesons
• Role of scalar $a_0(980)$ in the single Cabibbo Suppressed process $D^{+}\to {\pi }^{+}{\pi }^0\eta$
• Revising the $f_1(1420)$ resonance
• The scalar $f_0(500)$ and $f_0(980)$ resonances and vector mesons in the single Cabibbo-suppressed decays ${\Lambda }_c\to p{K}^{+}{K}^{-}$ and $p{\pi }^{+}{\pi }^{-}$
• $B^0$ and $B_s^0$ decays into $J/\psi$ plus a scalar or vector meson
• Theoretical study of the $D^0\to K^{-}{\pi }^{+}\eta$ reaction
• Hidden charm pentaquark and $\Lambda (1405)$ in the ${\Lambda }_b^0\to {\eta }_c{K}^{-}p(\pi \Sigma )$ reaction
• Observation of the $B_s^0\to J/\psi K_{\mathrm{S}}^0{K}^{\pm }{\pi }^{\mp }$ decay