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The charged $Z_c$ and $Z_b$ structures in a constituent quark model approach
by P. G. Ortega, J. Segovia, D. R. Entem and F. Fernández
This Submission thread is now published as SciPost Phys. Proc. 3, 013 (2020)
Submission summary
As Contributors: | Pablo G. Ortega |
Preprint link: | scipost_201910_00022v2 |
Date accepted: | 2020-01-27 |
Date submitted: | 2019-12-19 01:00 |
Submitted by: | G. Ortega, Pablo |
Submitted to: | SciPost Physics Proceedings |
Proceedings issue: | 24th European Few Body Conference (University of Surrey, U.K.) |
Academic field: | Physics |
Specialties: |
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Approach: | Theoretical |
Abstract
The nature of the recently discovered $Z_c$ and $Z_b$ structures is intriguing. Their charge forces its minimal quark content to be $Q\bar Q q\bar q$ (where $Q=\{c,b\}$ and $q=\{u,d\}$). In this work we perform a molecular coupled-channels calculation of the $I^G(J^{PC})=1^+(1^{+-})$ charm and bottom sectors in the framework of a constituent quark model which satisfactorily describes a wide range of properties of (non-)conventional hadrons containing heavy quarks. All the relevant channels are included for each sector, i.e.: The $D^{(\ast)}\bar D^{\ast}+h.c.$, $\pi J/\psi$ and $\rho\eta_c$ channels for the $Z_c$ and $B^{(\ast)}B^{\ast}$ and $\Upsilon(nS)\pi$ ($n=1,2,3$) channels for the $Z_b$ analysis. Possible structures of these resonances will be discussed
Published as SciPost Phys. Proc. 3, 013 (2020)