Search for a scalar partner of the $X(3872)$ via $ψ(3770)$ decays into $γηη'$ and $γπ^{+}π^{-}J/ψ$
X(3872)
DOI:
10.48550/arxiv.2305.11682
Publication Date:
2023-01-01
AUTHORS (624)
ABSTRACT
Using a data sample corresponding to an integrated luminosity of 2.93 fb$^{-1}$ collected at center-of-mass energy 3.773~GeV with the BESIII detector BEPCII collider, we search for scalar partner $X(3872)$, denoted as $X(3700)$, via $ψ(3770)\to γηη'$ and $γπ^{+}π^{-}J/ψ$ processes. No significant signals are observed upper limits product branching fractions $ {\cal B}(ψ(3770)\toγX(3700))\cdot B}(X(3700)\to ηη')$ ${\cal B}(X(3700)\toπ^{+}π^{-}J/ψ)$ determined 90\% confidence level, narrow $X(3700)$ mass ranging from 3710 3740 MeV/$c^2$, which 0.8 1.8 $(\times 10^{-5})$ 0.9 3.4 10^{-5})$, respectively.
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