000001644 001__ 1644
000001644 005__ 20190827064533.0
000001644 037__ $$aBELLE2-TALK-CONF-2019-113
000001644 041__ $$aeng
000001644 088__ $$aBELLE2-TALK-DRAFT-2019-111
000001644 100__ $$aH. Hirata
000001644 245__ $$aSensitivity to the X(3872) total width at the Belle II experiment
000001644 260__ $$aHADRON2019$$c2019-08-17
000001644 300__ $$amult. p
000001644 500__ $$a20 min
000001644 520__ $$aThe Belle II experiment at the SuperKEKB energy-asymmetric $e^+ e^-$ collider is a substantial upgrade of the B factory facility at the Japanese KEK laboratory. The design luminosity of the machine is $8\times 10^{35}$ cm$^{-2}$s$^{-1}$ and the Belle II experiment aims to record 50 ab$^{-1}$ of data, a factor of 50 more than its predecessor. From February to July 2018, the machine has completed a commissioning run and main operation of SuperKEKB has started in March 2019. The X(3872) is an exotic hadron candidate and studying the X(3872) partial widths is a good probe for the internal structure of this hadronic state. However, in order to derive partial widths, a measurement of its total width is needed. The large Belle II data set will provide an ideal environment to measure the X(3872) total width since it will be possible to use the $X(3872)\to D^0 \bar{D}^0 \pi^0$ decay$, which has a better mass resolution than $X(3872)\to J/\psi\pi^+\pi^-$ used in earlier work. In this presentation, we will give an overview of the analysis and the expected sensitivity to the X(3872) total width.
000001644 8560_ $$fdoris.yangsoo.kim@desy.de
000001644 8564_ $$uhttps://docs.belle2.org/record/1644/files/BELLE2-TALK-CONF-2019-113.pdf