# XIIIth Quark Confinement and the Hadron Spectrum

31 July 2018 to 6 August 2018
Maynooth University
Europe/Dublin timezone

## On the origin of Y(4260) and the J^{PC}=1^{--} exotic mesons

3 Aug 2018, 17:00
20m
Hall H (Arts Bldg.)

### Hall H

#### Arts Bldg.

Talk C: Heavy quarks

### Speaker

Dr Sachiko Takeuchi (Japan College of Social Work)

### Description

The $q\bar q s\bar s$ and $q\bar q c\bar c$ $J^{PC}=1^{--}$ 4-body systems are investigated by a simplified quark cluster model, where the 14 relevant channels are coupled. In each of the systems, one or more poles have been found. For the $q\bar q c\bar c$, a pole appears close to the thresholds and its width is found to be small. The poles found in the $q\bar q s\bar s$ have rather larger width. We argue that they can be seeds of the observed exotic mesons like the $Y(4260)$.

### Primary authors

Dr Sachiko Takeuchi (Japan College of Social Work) Dr Makoto Takizawa (Showa Pharmaceutical University)