Study of Open-Charm Decays and Radiative Transitions of the $$\textit{X}$$(3872)
The processes $$\textit{X}(3872) → D^{\ast0}\bar{D}^0 + \text{c.c.,}γJ/ψ,γψ(2S)$$, and $γD^+D^–$ are searched for in a 9.0 fb$$^{–1}$$ data sample collected at center-of-mass energies between 4.178 and 4.278 GeV with the BESIII detector. We observe $$\textit{X}(3872) → D^{\ast0}\bar{D}^0 + \text{c.c.}$$ and find evidence for $$\textit{X}(3872) → γJ/ψ$$ with statistical significances of 7.4σ and 3.5σ, respectively. No evident signals for $$\textit{X}(3872) → γψ(2S)$$ and $γD^+D^–$ are found, and the upper limit on the relative branching ratio $$R_{γψ} ≡ \{B[X(3872) → γψ(2S)]\}/\{B[X(3872) → γJ/ψ]\} < 0.59$$ is set at 90% confidence level. Measurements of branching ratios relative to decay $$\textit{X}(3872) → π^+π^– J/ψ$$ are also reported for decays $$\textit{X}(3872) → D^{\ast0}\bar{D}^0 + \text{c.c.,}γψ(2S),γJ/ψ$$, and $γD^+D^–$, as well as the non-$$D^{\ast0}\bar{D}^0$$ three-body decays $$π^0D^0\bar{D}^0$$ and $$γD^0\bar{D}^0$$.
- Research Organization:
- Indiana Univ., Bloomington, IN (United States); Carnegie Mellon Univ., Pittsburgh, PA (United States); Univ. of Minnesota, Minneapolis, MN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC)
- Contributing Organization:
- BESIII Collaboration
- Grant/Contract Number:
- FG02-05ER41374; SC0010118; SC0012069; SC-0010118; SC-0012069; DPT2006K-120470
- OSTI ID:
- 1634135
- Alternate ID(s):
- OSTI ID: 1800297
- Journal Information:
- Physical Review Letters, Vol. 124, Issue 24; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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