3 years ago

Search for $h_{c}\rightarrow\pi^+\pi^-J/\psi$ via $\psi(3686)\rightarrow \pi^0\pi^+\pi^-J/\psi$.

A. Denig, J. V. Bennett, G. Chelkov, S. A. Cetin, A. Amoroso, M. L. Chen, E. Boger, X. K. Chu, F. Bianchi, Y. Ban, D. Bettoni, P. L. Chen, H. Cai, R. Farinelli, Z. Y. Deng, X. Cai, N. Berger, X. R. Chen, D. Dedovich, M. Bertani, J. Z. Bai, M. Ablikim, P. F. Duan, H. S. Chen, X. C. Ai, Z. L. Dou, D. J. Ambrose, M. N. Achasov, C. Dong, Y. Ding, S. X. Du, I. Denysenko, S. Fegan, Y. Fang, S. J. Chen, A. Calcaterra, A. Dbeyssi, F. Feldbauer, M. Albrecht, O. Cakir, C. Q. Feng, R. A. Briere, J. C. Chen, J. F. Chang, G. F. Cao, F. De Mori, BESIII Collaboration, J. P. Dai, J. Chai, S. Ahmed, G. Felici, J. Fang, L. Fava, S. S. Fang, R. Baldini Ferroli, L. Y. Dong, M. Y. Dong, G. Chen, Q. An, I. Boyko, J. M. Bian, F. F. An, Y. B. Chen, H. L. Dai, G. Cibinetto, M. Destefanis, J. Dong, D. W. Bennett, O. Bakina

Using a data sample of $448.1\times10^6$ $\psi(3686)$ events collected with the BESIII detector operating at the BEPCII, we perform search for the hadronic transition $h_c\rightarrow\pi^+\pi^-J/\psi$ via $\psi(3686)\rightarrow\pi^0h_c$. No signals of the transition are observed, and the upper limit on the product branching fraction $\mathcal{B}(\psi(3686)\rightarrow\pi^0h_c)\mathcal{B}(h_c\rightarrow\pi^+\pi^-J/\psi)$ at the 90% confidence level is determined to be $2.0\times10^{-6}$. This is the most stringent upper limit to date.

Publisher URL: http://arxiv.org/abs/1801.03485

DOI: arXiv:1801.03485v1

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