Measurement of singly Cabibbo-suppressed decays D0 →π0 π0 π0, π0 π0 η , π0 ηη and ηηη

Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E.; Boyko, I.; Briere, R. A.; Cai, H.; Cai, X.; Cakir, O.; Calcaterra, A.; Cao, G. F.; Cetin, S. A.; Chai, J.; Chang, J. F.; Chelkov, G.; Chen, G.; Chen, H. S.; Chen, J. C.; Chen, M. L.; Chen, P. L.; Chen, S. J.; Chen, X. R.; Chen, Y. B.; Chu, X. K.; Cibinetto, G.; Dai, H. L.; Dai, J. P.; Dbeyssi, A.; Dedovich, D.; Deng, Z. Y.; Denig, A.; Denysenko, I.; Destefanis, M.; De Mori, F.; Ding, Y.; Dong, C.; Dong, J.; Dong, L. Y.; Dong, M. Y.; Dou, Z. L.; Du, S. X.; Duan, P. F.; Fang, J.; Fang, S. S.; Fang, Y.; Farinelli, R.; Fava, L.; Fegan, S.; Feldbauer, F.; Felici, G.; Feng, C. Q.; Fioravanti, E.; Fritsch, M.; Fu, C. D.; Gao, Q.; Gao, X. L.; Gao, Y.; Gao, Y. G.; Gao, Z.; Garillon, B.; Garzia, I.; Goetzen, K.; Gong, L.; Gong, W. 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doi:10.1016/j.physletb.2018.04.017

Title: Measurement of singly Cabibbo-suppressed decays D⁰ →π⁰ π⁰ π⁰, π⁰ π⁰ η , π⁰ ηη and ηηη

Journal Article · 10 April 2018 · Physics Letters B

DOI: https://doi.org/10.1016/j.physletb.2018.04.017 · OSTI ID:1437861

Ablikim, M.; Achasov, M. N.; Ahmed, S.; Albrecht, M.; Amoroso, A.; An, F. F.; An, Q.; Bai, J. Z.; Bai, Y.; Bakina, O.; Baldini Ferroli, R.; Ban, Y.; Bennett, D. W.; Bennett, J. V.; Berger, N.; Bertani, M.; Bettoni, D.; Bian, J. M.; Bianchi, F.; Boger, E. more »

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.

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Research Organization:: George Washington Univ., Washington, DC (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Nuclear Physics (NP)

Grant/Contract Number:: SC0016583; FG02-05ER41374; SC-0010118; SC-0010504; SC-0012069

OSTI ID:: 1437861

Alternate ID(s):: OSTI ID: 1440807

Journal Information:: Physics Letters B, Vol. 781, Issue C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 3 works

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