Abstract
We report the first determination of the absolute branching fractions of the X(3872) decays by globally analyzing the measurements provided by the Belle, BaBar, BESIII, and LHCb experiments. The branching fractions of X(3872) to pi^+pi^- J/psi and D*0D0bar+c.c. are found to be (4.1^{+1.9}_{-1.1})% and (52.4^{+25.3}_{-14.3})%, respectively. The branching fractions of the decays X(3872) to gamma J/psi, gamma psi', omega J/psi, and pi^0 chi_{c1} are also determined. The global fit implies that the fraction of X(3872) decays which are not observed in experiments is (31.9_{-31.5}^{+18.1})%, which indicates that there is still a lot of room for searching for new decay modes of the X(3872). With the branching fraction, we determine the production cross section of e+e- to gamma X(3872) at center-of-mass energy 4.226 GeV.
Highlights
Observed in 2003 by the Belle experiment [1], the Xð3872Þ has been the most puzzling state among all the so-called charmoniumlike XYZ states for all these years [2]
We report the first determination of the absolute branching fractions of the Xð3872Þ decays by globally analyzing the measurements provided by the Belle, BABAR, BESIII, and LHCb experiments
The global fit implies that the fraction of Xð3872Þ decays which are not observed in experiments is ð31.9þ−3118..51Þ%, which indicates that there is still a lot of room for searching for new decay modes of the Xð3872Þ
Summary
; ð1Þ where i is the index (from 1 to 25) listed in Table I, xi are the 25 measured values, x is the corresponding values
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