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# 8th Workshop of the APS Topical Group on Hadronic Physics

10-12 April 2019
Denver, CO
US/Mountain timezone

## New determination of the lightest hybrid meson candidate

12 Apr 2019, 10:30
30m
Director's Row E (Denver, CO)

### Director's Row E

#### Denver, CO

Sheraton Denver Downtown Hotel, 1550 Court Pl. lobby level of the Plaza building
invited talk

### Speaker

Mr Arkaitz Rodas (Universidad Complutense de Madrid)

### Description

In this talk I will review the recent analyses and other activities carried out by the JPAC collaboration. In particular, the phenomenological analysis of the $\eta^{(')} \pi$ partial waves measured at COMPASS. We fit the data using a coupled-channel amplitude based on first principles, determining in a robust way the existence of only one hybrid meson candidate $\pi_1$, corresponding to the $\pi_1(1600)$. We also extract the parameters of the ordinary mesons $a_2(1320)$ and $a'_2(1700)$.

### Primary author

Mr Arkaitz Rodas (Universidad Complutense de Madrid)

 Slides