000001458 001__ 1458
000001458 005__ 20190610081718.0
000001458 037__ $$aBELLE2-TALK-CONF-2019-053
000001458 041__ $$aeng
000001458 088__ $$aBELLE2-TALK-DRAFT-2019-047
000001458 100__ $$aHikari Hirata
000001458 245__ $$aSensitivity to the X(3872) total width at the Belle II experiment
000001458 260__ $$aFPCP 2019$$c2019-05-10
000001458 300__ $$amult. p
000001458 500__ $$a15 min
000001458 520__ $$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.
000001458 8560_ $$fdoris.yangsoo.kim@desy.de
000001458 8564_ $$uhttps://docs.belle2.org/record/1458/files/BELLE2-TALK-CONF-2019-053.pdf