Search for $X(3872)\to {\pi }^0{\chi }_{c0}$ and $X(3872)\to \pi \pi {\chi }_{c0}$ at BESIII

Abstract

Using 9.9 fb${}^{-1}$ of $e^{+}{e}^{-}$ collision data collected by the BESIII detector at center-of-mass energies between 4.15 and 4.30 GeV, we search for the processes $e^{+}{e}^{-}\to \gamma X(3872)$ with $X(3872)\to {\pi }^0{\chi }_{c0}$ and $X(3872)\to \pi \pi {\chi }_{c0}$. Depending on the fitting model, the statistical significance for $X(3872)\to {\pi }^0{\chi }_{c0}$ ranges from 1.3$\sigma$ to 2.8$\sigma$. We set upper limits (at 90\% C.L.) of $\frac{\mathcal{B}(X(3872)\to {\pi }^0{\chi }_{c0})}{\mathcal{B}(X(3872)\to {\pi }^{+}{\pi }^{-}J/\psi )}<3.6$, $\frac{\mathcal{B}(X(3872)\to {\pi }^{+}{\pi }^{-}{\chi }_{c0})}{\mathcal{B}(X(3872)\to {\pi }^{+}{\pi }^{-}J/\psi )}<0.68$, and $\frac{\mathcal{B}(X(3872)\to {\pi }^0{\pi }^0{\chi }_{c0})}{\mathcal{B}(X(3872)\to {\pi }^{+}{\pi }^{-}J/\psi )}<1.7$. Combined with the BESIII measurement of $X(3872)\to {\pi }^0{\chi }_{c1}$, we also set an upper limit of $\frac{\mathcal{B}(X(3872)\to {\pi }^0{\chi }_{c0})}{\mathcal{B}(X(3872)\to {\pi }^0{\chi }_{c1})}<4.4$.

16 pages

References in corpus (14)

• Precise measurement of the $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}J/\psi$ cross section at center-of-mass energies from 3.77 to 4.60 GeV
• Study of the lineshape of the ${\chi }_{c1}(3872)$ state
• X(3872) as a hadronic molecule and its decays to charmonium states and pions
• Hadronic Decays of the X(3872) to chi_{cJ} in Effective Field Theory
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• Cross section measurements of $e^{+}{e}^{-}\to \omega {\chi }_{c0}$ from $\sqrt{s}=$4.178 to 4.278 GeV
• Pionic transitions from X(3872) to chi_{cJ}
• Study of the ${\psi }_2(3823)$ and ${\chi }_{c1}(3872)$ states in $B^{+}\to \left(J\psi {\pi }^{+}{\pi }^{-}\right)K^{+}$ decays
• Observation of the decay $X(3872)\to {\pi }^0{\chi }_{c1}(1P)$
• A Phenomenological analysis on isospin-violating decay of $X(3872)$
• Measurements of the center-of-mass energies of $e^{+}{e}^{-}$ collisions at BESIII
• Cross Section Measurement of $e^{+}{e}^{-}\to {\pi }^{+}{\pi }^{-}\psi (3686)$ from $\sqrt{s}=4.0076$~GeV to 4.6984~GeV
• Search for $X(3872)$ and $X(3915)$ decay into ${\chi }_{c1}{\pi }^0$ in $B$ decays at Belle
• Evidence for $e^{+}{e}^{-}\to \gamma {\eta }_c(1S)$ at center-of-mass energies between 4.01 and 4.60 GeV

Cited by in corpus (1)

• Exotic hadrons associated with $b$-quark