Search for $X(3872)$ and $X(3915)$ decay into ${\chi }_{c1}{\pi }^0$ in $B$ decays at Belle

Abstract

We report a search for $X(3872)$ and $X(3915)$ in $B^{+}\to {\chi }_{c1}{\pi }^0{K}^{+}$ decays. We set an upper limit of $\mathcal{B}(B^{+}\to X(3872)K^{+})\times \mathcal{B}(X(3872)\to {\chi }_{c1}{\pi }^0)$ $<8.1\times 10^{-6}$ and $\mathcal{B}(B^{+}\to X(3915)K^{+})\times \mathcal{B}(X(3915)\to {\chi }_{c1}{\pi }^0)$ $<3.8\times 10^{-5}$ at 90\% confidence level. We also measure $\mathcal{B}(X(3872)\to {\chi }_{c1}{\pi }^0)/\mathcal{B}(X(3872)\to J/\psi {\pi }^{+}{\pi }^{-})<0.97$ at 90\% confidence level. The results reported here are obtained from $772\times 10^6$ $B\overline{B}$ events collected at the ${\rm Y}(4S)$ resonance with the Belle detector at the KEKB asymmetric-energy $e^{+}{e}^{-}$ collider.

7 pages, 4 figures, submitted to PRD (RC)

Topics & keywords

References in corpus (5)

• Where is the χ_{c0}(2P)?
• Could the $X(3915)$ and the $X(3930)$ Be the Same Tensor State?
• Is the X(3915) the chi_{c0}(2P)?
• Pionic transitions from X(3872) to chi_{cJ}
• Observation of the decay $X(3872)\to {\pi }^0{\chi }_{c1}(1P)$

Cited by in corpus (8)

• A Phenomenological analysis on isospin-violating decay of $X(3872)$
• Correlation of the hidden-charm molecular tetraquarks and the charmoniumlike structures existing in the $B\to XYZ+K$
• Study of the lineshape of $X(3872)$ using $B$ decays to $D^0\overline{D}{}^{\ast 0}K$
• Study of charmonium and charmonium-like contributions in $B^{+}\to J/\psi \eta K^{+}$ decays
• Search for $X(3872)\to {\pi }^0{\chi }_{c0}$ and $X(3872)\to \pi \pi {\chi }_{c0}$ at BESIII
• Constrain the ${\chi }_{cJ}\to D^{(\ast )}{\bar{D}}^{(\ast )}$ effective couplings via the $X(3872)\to {\pi }^0{\chi }_{cJ}$ decays
• Exotic hadrons associated with $b$-quark
• Understanding $X(3872)$ and its decays in the extended Friedrichs scheme