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  • Measurement of singly Cabib...
    An, F. F.; Berger, N.; Bianchi, F.; Boyko, I.; Cai, X.; Calcaterra, A.; Chelkov, G.; Chen, P. L.; Dou, Z. L.; Felici, G.; Feng, C. Q.; Gao, Y. G.; Gong, W. X.; Gu, Y. T.; Guo, A. Q.; Han, S.; He, K. L.; Holtmann, T.; Hou, Z. L.; Hu, H. M.; Hu, Y.; Huang, G. S.; Huang, X. Z.; Huang, Z. L.; Hussain, T.; Jiang, X. Y.; Jiao, J. B.; Jiao, Z.; Jin, S.; Kavatsyuk, M.; Ke, B. C.; Kornicer, M.; Kuemmel, M.; Kuhlmann, M.; Lange, J. S.; Larin, P.; Li, F.; Li, G.; Li, H. J.; Li, P. L.; Li, Q. Y.; Li, X. N.; Li, X. Q.; Liang, Y. F.; Liao, G. R.; Liu, B.; Liu, J. B.; Liu, J. Y.; Liu, K. Y.; Liu, P. L.; Ma, Y. M.; Mao, Z. P.; Meng, Z. X.; Messchendorp, J. G.; Mezzadri, G.; Nerling, F.; Pellegrino, J.; Qi, H. R.; Qi, M.; Qin, X. S.; Qiu, J. F.; Ripka, M.; Schnier, C.; Shan, W.; Sun, Y. J.; Sun, Z. J.; Sun, Z. T.; Tang, G. Y.; Varner, G. S.; Wang, B.; Wang, D. Y.; Wang, P. L.; Wang, Y.; Wang, Z.; Wang, Zongyuan; Weber, T.; Wei, D. H.; Wolke, M.; Xiong, X. A.; Xu, Q. N.; Xu, X. P.; Yan, L.; Yan, W. B.; Yang, L.; Yin, J. H.; Yuan, Y.; Zeng, Z.; Zhang, B. Y.; Zhang, H. Y.; Zhang, J. Y.; Zhang, L.; Zhang, X. Y.; Zhang, Z. P.; Zhao, Lei; Zhao, S. J.; Zhao, T. C.; Zheng, B.; Zheng, Y. H.; Zhu, K.; Zhu, Z. A.

    Physics letters. B, 04/2018, Letnik: 781, Številka: C
    Journal Article

    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.