Observation of an alternative χc0 (2P) candidate in e+e- →j /ψD D OBSERVATION of AN ALTERNATIVE χc0 (2P) ... K. CHILIKIN et al.

(Belle Collaboration)

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

We perform a full amplitude analysis of the process e+e-→J/ψDD, where D refers to either D0 or D+. A new charmoniumlike state X∗(3860) that decays to DD is observed with a significance of 6.5σ. Its mass is (3862-32+26 -13+40) MeV/c2, and its width is (201-67+154 -82+88) MeV. The JPC=0++ hypothesis is favored over the 2++ hypothesis at the level of 2.5σ. The analysis is based on the 980 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB.

Original languageEnglish
Article number112003
JournalPhysical Review D
Volume95
Issue number11
DOIs
Publication statusPublished - 2017 Jun 1

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ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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Observation of an alternative χc0 (2P) candidate in e+e- →j /ψD D OBSERVATION of AN ALTERNATIVE χc0 (2P) ... K. CHILIKIN et al. / (Belle Collaboration).

In: Physical Review D, Vol. 95, No. 11, 112003, 01.06.2017.

Research output: Contribution to journalArticle

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abstract = "We perform a full amplitude analysis of the process e+e-→J/ψDD, where D refers to either D0 or D+. A new charmoniumlike state X∗(3860) that decays to DD is observed with a significance of 6.5σ. Its mass is (3862-32+26 -13+40) MeV/c2, and its width is (201-67+154 -82+88) MeV. The JPC=0++ hypothesis is favored over the 2++ hypothesis at the level of 2.5σ. The analysis is based on the 980 fb-1 data sample collected by the Belle detector at the asymmetric-energy e+e- collider KEKB.",
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