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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
  • High-Energy Physics - Phenomenology
Approach: Theoretical


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)

Submission & Refereeing History

Published as SciPost Phys. Proc. 3, 013 (2020)

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Resubmission scipost_201910_00022v2 on 19 December 2019

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