Observation of an alternative $chi_{c0}(2P)$ candidate in $e^+e^- to J/psi Dbar{D}$

Chilikin, K.*; Tanida, Kiyoshi ; Belle Collaboration*; 167 of others*

We perform a full amplitude analysis of the process $e^+e^- to J/psi Dbar{D}$ , where refers to either or . A new charmonium-like state that decays to is observed with a significance of . Its mass is $(3862^{+26}_{-32}{}^{+40}_{-13})$ MeV/ and width is $(201^{+154}_{-67}{}^{+88}_{-82})$ MeV. The $J^{PC}=0^{++}$ hypothesis is favored over the $2^{++}$ hypothesis at the level of . The analysis is based on the 980 fb $^{-1}$ data sample collected by the Belle detector at the asymmetric-energy collider KEKB.

Language	:	English
Journal	:	Physical Review D
Volume	:	95
Number	:	11
Pages	:	p.112003_1 - 112003_17
Publication Year/Month	:	2017/06
Meeting title	:
Held date	:
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Patent information	:
PDF	:	AA2017-0237.pdf:0.72MB
Paper URL	:	https://doi.org/10.1103/PhysRevD.95.112003
DOI for research data	:
Keywords	:	ハドロン分光
Research Facility	:
Press Release	:
Article of JAEA R&D Review	:
Cooperating Institute	:	高エネルギー加速器研究機構

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Registration No. : AA20170237
JAEA Abstracts No. : 46000151
Paper Submission No. : 19780

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Observation of an alternative candidate in

Observation of an alternative $chi_{c0}(2P)$ candidate in $e^+e^- to J/psi Dbar{D}$