Measurement of singly Cabibbo-suppressed decays D0 → π0π0π0, π0π0η, π0ηη and ηηη
Using a data sample of e+e- collision data corresponding to an integrated luminosity of 2.93 fb-1 collected with the BESIII detector at a center-of-mass energy of √s = 3.773 GeV, we search for the singly Cabibbo-suppressed decays D0 → π0π0π0, π0π0η, π0ηη and ηηη using the double tag method. The absolute branching fractions are measured to be B(D0 → π0π0π0) = (2.0 ± 0.4 ± 0.3) × 10-4, B(D0 → π0π0η) = (3.8 ± 1.1 ± 0.7) × 10-4 and B(D0 → π0ηη) = (7.3 ± 1.6 ± 1.5) × 10-4 with the statistical significances of 4.8σ, 3.8σ and 5.5σ, respectively, where the first uncertainties are statistical and the second ones systematic. No significant signal of D0 → ηηη is found, and the upper limit on its decay branching fraction is set to be B(D0 → ηηη) < 1.3 × 10-4 at the 90% confidence level.
- Research Organization:
- George Washington Univ., Washington, DC (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- Grant/Contract Number:
- FG02-05ER41374; SC-0010118; SC-0010504; SC-0012069; SC0016583
- OSTI ID:
- 1437861
- Alternate ID(s):
- OSTI ID: 1440807
- Journal Information:
- Physics Letters B, Journal Name: Physics Letters B Vol. 781 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
Measurement of singly Cabibbo-suppressed decays $D^0 → π^0 π^0 π^0 , π^0 π^0 η , π^0 ηη$ and $ηηη$
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text | January 2018 |
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