2015
DOI: 10.48550/arxiv.1505.03087
|View full text |Cite
Preprint
|
Sign up to set email alerts
|

Search for $D^0\toγγ$ and improved measurement of the branching fraction for $D^0 \to π^0π^0$

M. Ablikim,
M. N. Achasov,
X. C. Ai
et al.

Abstract: Using 2.92 fb −1 of electron-positron annihilation data collected at √ s = 3.773 GeV with the BESIII detector, we report the results of a search for the flavor-changing neutral current process D 0 → γγ using a doubletag technique. We find no signal and set an upper limit at 90% confidence level for the branching fraction of B(D 0 → γγ) < 3.8×10 −6 . We also investigate D 0 -meson decay into two neutral pions, obtaining a branching fraction of B(D 0 → π 0 π 0 ) = (8.24 ± 0.21(stat.) ± 0.30(syst.)) × 10 −4 , the… Show more

Help me understand this report
View published versions

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

0
0
0

Publication Types

Select...

Relationship

0
0

Authors

Journals

citations
Cited by 0 publications
references
References 16 publications
0
0
0
Order By: Relevance

No citations

Set email alert for when this publication receives citations?