Open Access

Medina Ablikim, Mikhail N. Achasov, Samer Ahmed, Malte Albrecht, Antonio Amoroso, F.F. An, Q. An, J.Z. Bai, Y. Bai, Olga Bakina, Rinaldo Baldini Ferroli, Yong Ban, D.W. Bennett, J.V. Bennett, Niklaus Berger, Monica Bertani, Diego Bettoni, J.M. Bian, Fabrizio Bianchi, E. Boger, Igor R. Boyko, Roy A. Briere, H. Cai, X. Cai, O. Cakir, Alessandro Calcaterra, G.F. Cao, Serkant Ali Çetin, J. Chai, Jinfan Chang, Gueorgui A. Chelkov, G. Chen, Hesheng Chen, J.C. Chen, M.L. Chen, P.L. Chen, S.J. Chen, X.R. Chen, Yuanbo Chen, X.K. Chu, Gianluigi Cibinetto, Hongliang Dai, J.P. Dai, Alaa Dbeyssi, Dmitri V. Dedovich, Ziyan Deng, Achim Denig, Igor Denysenko, Marco Giovanni Maria Destefanis, Francesca De Mori, Y. Ding, C. Dong, J. Dong, Liaoyuan Dong, Mingyi Dong, Z.L. Dou, Shuxian Du, P.F. Duan, J. Fang, Shuangshi Fang, Y. Fang, Riccardo Farinelli, Luciano Fava, S. Fegan, Florian Feldbauer, Giulietto Felici, C.Q. Feng, Elisa Fioravanti, Miriam Fritsch, Chengdong Fu, Q. Gao, X.L. Gao, Y. Gao, Y.G. Gao, Z. Gao, B. Garillon, I. Garzia, Klaus Goetzen, L. Gong, Wenxuan Gong, Wolfgang Gradl, M. Greco, Minhao Gu, Y.T. Gu, Aiqiang Guo, R.P. Guo, Yuping Guo, Z. Haddadi, S. Han, Xiqing Hao, F.A. Harris, K.L. He, X.Q. He, Fritz-Herbert Heinsius, T. Held, Yuekun Heng, Tobias Holtmann, Zhilong Hou, Haiming Hu, T. Hu, Y. Hu, G.S. Huang, J.S. Huang, Xingtao Huang, X.Z. Huang, Z.L. Huang, Tahir Hussain, Walter Ikegami Andersson, Quan Ji, Qingping Ji, X.B. Ji, X.L. Ji, Xiaoshan Jiang, X.Y. Jiang, J.B. Jiao, Z. Jiao, D.P. Jin, Shan Jin, Y. Jin, Tord Johansson, A. Julin, Nasser Kalantar-Nayestanaki, Xiaolin Kang, X.S. Kang, Myroslav O. Kavatsyuk, B.C. Ke, T. Khan, Alfons Khoukaz, P. Kiese, Ralf Kliemt, L. Koch, Onur Bugra Kolcu, Bertram Kopf, M. Kornicer, M. Kuemmel, Meike Küßner, M. Kuhlmann, Andrzej Kupsc, Wolfgang Kühn, Jens Sören Lange, M. Lara, Paul Larin, Lia Lavezzi, H. Leithoff, C. Leng, C. Li, Cheng Li, D.M. Li, F. Li, F.Y. Li, G. Li, Haibo Li, H.J. Li, J.C. Li, Jin Li, K.J. Li, Kang Li, Ke Li, Lei Li, P.L. Li, P.R. Li, Q.Y. Li, Weidong Li, Weiguo Li, X.L. Li, X.N. Li, X.Q. Li, Z.B. Li, H. Liang, Y.F. Liang, Y.T. Liang, G.R. Liao, D.X. Lin, B. Liu, B.J. Liu, C.X. Liu, D. Liu, F.H. Liu, Fang Liu, Feng Liu, H.B. Liu, H.M. Liu, Huanhuan Liu, Huihui Liu, J.B. Liu, J.Y. Liu, K. Liu, K.Y. Liu, Ke Liu, L.D. Liu, P.L. Liu, Q. Liu, S.B. Liu, X. Liu, Y.B. Liu, Zhen-An Liu, Zhiqing Liu, Y.F. Long, Xinchou Lou, H.J. Lu, Junguang Lu, Y. Lu, Yunpeng Lu, Chenglin Luo, M.X. Luo, X.L. Luo, Xiao-Rui Lyu, Fengcai Ma, H.L. Ma, Lianliang Ma, M.M. Ma, Qiumei Ma, T. Ma, X.N. Ma, Xiaoyan Ma, Y.M. Ma, Frank E. Maas, Marco Maggiora, Q.A. Malik, Yajun Mao, Zepu Mao, Simonetta Marcello, Z.X. Meng, Johannes Gerhardus Messchendorp, Giulio Mezzadri, J. Min, T.J. Min, Ryan Edward Mitchell, Xiaohu Mo, Y.J. Mo, C. Morales Morales, Nikolai Yu. Muchnoi, H. Muramatsu, A. Mustafa, Yury Nefedov, Frank Nerling, Ivan Borisovich Nikolaev, Z. Ning, Shabana Nisar, S.L. Niu, X.Y. Niu, Stephen L. Olsen, Qun Ouyang, Simone Pacetti, Y. Pan, Michael Papenbrock, P. Patteri, Marc Pelizäus, Jacopo Pellegrino, H.P. Peng, Klaus Peters, J. Pettersson, J.L. Ping, R.G. Ping, A. Pitka, Ronald Poling, Vindhyawasini Prasad, H.R. Qi, Ming Qi, S. Qian, Congfeng Qiao, N. Qin, X.S. Qin, Zhonghua Qin, Jinfa Qiu, K.H. Rashid, Christoph Florian Redmer, M. Richter, M. Ripka, Manuel Dionisio Da Rocha Rolo, Gang Rong, Christoph Rosner, Andrei V. Sarantsev, M. Savrié, Claudius Schnier, Karin Schönning, W. Shan, M. Shao, C.P. Shen, P.X. Shen, X.Y. Shen, H.Y. Sheng, J.J. Song, W.M. Song, X.Y. Song, Stefano Sosio, C. Sowa, Stefano Spataro, Gongxing Sun, J.F. Sun, L. Sun, S.S. Sun, X.H. Sun, Y.J. Sun, Y.K. Sun, Y.Z. Sun, Z.J. Sun, Z.T. Sun, C.J. Tang, G.Y. Tang, X. Tang, I. Tapan, M. Tiemens, B. Tsednee, Ismail Uman, G.S. Varner, B. Wang, B.L. Wang, D. Wang, D.Y. Wang, Dan Wang, K. Wang, L.L. Wang, L.S. Wang, M. Wang, Meng Wang, P. Wang, P.L. Wang, W.P. Wang, X.F. Wang, Y. Wang, Y.D. Wang, Y.F. Wang, Y.Q. Wang, Z. Wang, Z.G. Wang, Z.Y. Wang, Zongyuan Wang, T. Weber, D.H. Wei, P. Weidenkaff, Shuopin Wen, Ulrich Wiedner, Magnus Wolke, L.H. Wu, L.J. Wu, Z. Wu, L. Xia, Y. Xia, D. Xiao, H. Xiao, Y.J. Xiao, Zhenjun Xiao, Y.G. Xie, Y.H. Xie, X.A. Xiong, Q.L. Xiu, Guofa Xu, J.J. Xu, L. Xu, Q.J. Xu, Q.N. Xu, Xinping Xu, L. Yan, W.B. Yan, W.C. Yan, Y.H. Yan, H.J. Yang, Hongxun Yang, L. Yang, Y.H. Yang, Yongxu Yang, M. Ye, Minghan Ye, J.H. Yin, Z.Y. You, Boxiang Yu, C.X. Yu, J.S. Yu, Chang-Zheng Yuan, Y. Yuan, A. Yuncu, A.A. Zafar, Y. Zeng, Z. Zeng, B.X. Zhang, B.Y. Zhang, C.C. Zhang, D.H. Zhang, H.H. Zhang, Hongyu Zhang, J. Zhang, J.L. Zhang, J.Q. Zhang, J.W. Zhang, Jianyong Zhang, J.Z. Zhang, K. Zhang, L. Zhang, S.Q. Zhang, X.Y. Zhang, Y.H. Zhang, Y.T. Zhang, Yang Zhang, Yao Zhang, Yu Zhang, Z.H. Zhang, Z.P. Zhang, Z.Y. Zhang, G. Zhao, J.W. Zhao, J.Y. Zhao, J.Z. Zhao, Lei Zhao, Ling Zhao, Ming-Gang Zhao, Q. Zhao, S.J. Zhao, T.C. Zhao, Yubin Zhao, Zhengguo Zhao, Alexey Zhemchugov, B. Zheng, J.P. Zheng, Y.H. Zheng, B. Zhong, L. Zhou, X. Zhou, X.K. Zhou, X.R. Zhou, X.Y. Zhou, J. Zhu, J. Zhu, K. Zhu, Kejun Zhu, S. Zhu, S.H. Zhu, X.L. Zhu, Y.C. Zhu, Y.S. Zhu, Zian Zhu, J. Zhuang, B.S. Zou, Jiaheng Zou

• 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=3.773GeV, 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.