Search for the decay D+s → a0 (980)0e + νe

Using 6.32 fb−1 of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we present the first search for the decay D+s → a0 (980)0e + νe, a0 (980)0 → π0η, which could proceed via a0(980) − f0(980) mixing. No significant signal is obs...

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Bibliographic Details
Published in:Physical review. D 2021-05, Vol.103 (9), p.1
Main Author: Ablikim, M
Format: Article
Language:English
Subjects:
Confidence intervals
Decay
Online Access:Get full text
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Summary:Using 6.32 fb−1 of electron-positron collision data recorded by the BESIII detector at center-of-mass energies between 4.178 and 4.226 GeV, we present the first search for the decay D+s → a0 (980)0e + νe, a0 (980)0 → π0η, which could proceed via a0(980) − f0(980) mixing. No significant signal is observed. An upper limit of 1.2 × 10−4 at the 90% confidence level is set on the product of the branching fractions of D+s → a0 (980)0e+νe and a0(980)0 → π0η decays.
ISSN:2470-0010
2470-0029
DOI:10.1103/PhysRevD.103.092004