Open Access

Medina Ablikim, Mikhail N. Achasov, Patrik Adlarson, Samer Ahmed, Malte Albrecht, Riccardo Aliberti, Antonio Amoroso, Qi An, Anita, Xuhong Bai, Y. Bai, Olga Bakina, Rinaldo Baldini Ferroli, Ilaria Balossino, Yong Ban, Khurelbaatar Begzsuren, Niklaus Berger, Monica Bertani, Diego Bettoni, Fabrizio Bianchi, J Biernat, Johannes Bloms, Alberto Bortone, Igor R. Boyko, Roy A. Briere, H. Cai, Xiao Cai, Alessandro Calcaterra, G. F. Cao, Ning Cao, Serkant Ali Çetin, Jinfan Chang, W. L. Chang, Gueorgui A. Chelkov, D. Y. Chen, G. Chen, Hesheng Chen, M. L. Chen, S. J. Chen, X. R. Chen, Yuanbo Chen, Z. J Chen, W. S. Cheng, Gianluigi Cibinetto, Fabio Cossio, X. F. Cui, Hongliang Dai, Xinchen Dai, Alaa Dbeyssi, Remco E. de Boer, 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, X. Dong, Shuxian Du, J. Fang, Shuangshi Fang, Y. Fang, Riccardo Farinelli, Luciano Fava, Florian Feldbauer, Giulietto Felici, C. Q. Feng, Miriam Fritsch, Chengdong Fu, Ying Fu, Y. Gao, Y. Gao, Y. Gao, Y. G. Gao, I. Garzia, Evelina Gersabeck, Alexander Gilman, Klaus Goetzen, L. Gong, Wenxuan Gong, Wolfgang Gradl, M. Greco, L. M. Gu, Minhao Gu, S. Gu, Y. T. Gu, C. Y Guan, Aiqiang Guo, L. B. Guo, R. P. Guo, Yuping Guo, Yuping Guo, Alexey Guskov, T. T. Han, Xiqing Hao, F. A. Harris, K. L. He, Fritz-Herbert Heinsius, C. H. Heinz, T. Held, Yuekun Heng, Christoph Herold, Mathilde Himmelreich, Tobias Holtmann, Y. R. Hou, Zhilong Hou, Haiming Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Z. Huang, Nils Huesken, Tahir Hussain, Walter Ikegami Andersson, William Imoehl, M. Irshad, S. Jaeger, S. Janchiv, Quan Ji, Qingping Ji, X. B. Ji, X. L. Ji, H. B. Jiang, Xiaoshan Jiang, X. Y. Jiang, Y. Jiang, J. B. Jiao, Z. Jiao, Shan Jin, Y. Jin, Tord Johansson, Nasser Kalantar-Nayestanaki, Xiaolin Kang, Rosa Kappert, Myroslav O. Kavatsyuk, Bai-Cian Ke, Iman Keshk, Alfons Khoukaz, P. Kiese, Ryuta Kiuchi, Ralf Kliemt, Leonard Koch, Onur Bugra Kolcu, Bertram Kopf, M. Kuemmel, Meike Küßner, Andrzej Kupsc, M. G. Kurth, Wolfgang Kühn, John Jake Lane, Jens Sören Lange, Paul Larin, Lia Lavezzi, Z. H. Lei, H. Leithoff, Max Lellmann, Thomas Lenz, C. Li, Chunhua Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, H. Li, Haibo Li, Huijing Li, J. L. Li, J. Q. Li, Ke Li, L. K. Li, Lei Li, P. L. Li, Peirong Li, S. Y. Li, Weidong Li, Weiguo Li, X. H. Li, X. L. Li, Z. Y. Li, H. Liang, H. Liang, Y. F. Liang, Y. T. Liang, L. Z. Liao, J. Libby, C. X. Lin, B. J. Liu, C. X. Liu, D. Liu, Fu-Hu 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. Liu, Meihong Liu, Q. Liu, S. B. Liu, Shuai Liu, Tong Liu, Weimin Liu, X. Liu, Y. Liu, Y. B. Liu, Zhen-An Liu, Zhiqing Liu, Xinchou Lou, F. X. Lu, H. J. Lu, J. D. Lu, Junguang Lu, X. L. Lu, Y. Lu, Yunpeng Lu, Chenglin Luo, M. X. Luo, P. W. Luo, Tao Luo, X. L. Luo, S. Lusso, Xiao-Rui Lyu, Fengcai Ma, Hailong Ma, Lianliang Ma, M. M. Ma, Qiumei Ma, Runqiu Ma, R. T. Ma, X. N. Ma, X. X. Ma, Xiaoyan Ma, Frank E. Maas, Marco Maggiora, Stephan Maldaner, Sneha Malde, Qadeer Afzal Malik, Alessio Mangoni, Yajun Mao, Zepu Mao, Simonetta Marcello, Z. X. Meng, Johannes Gerhardus Messchendorp, Giulio Mezzadri, T. J. Min, Ryan Edward Mitchell, Xiaohu Mo, Y. J. Mo, Nikolai Yu. Muchnoi, H. Muramatsu, Simon Nakhoul, Yury Nefedov, Frank Nerling, Ivan Borisovich Nikolaev, Z. Ning, Shabana Nisar, Stephen L. Olsen, Qun Ouyang, Simone Pacetti, X. Pan, Y. Pan, A. Pathak, P. Patteri, Marc Pelizäus, H. P. Peng, Klaus Peters, J. Pettersson, J. L. Ping, R. G. Ping, A. Pitka, Ronald Poling, Vindhyawasini Prasad, H. Qi, H. R. Qi, K. H. Qi, Ming Qi, Tianyu Qi, Tianyu Qi, S. Qian, W. B. Qian, Z. Qian, Congfeng Qiao, L. Q. Qin, X. S. Qin, Zhonghua Qin, Jinfa Qiu, S. Q. Qu, K. H. Rashid, Krishnakumar Ravindran, Christoph Florian Redmer, Angelo Rivetti, Viktor Rodin, Manuel Dionisio Da Rocha Rolo, Gang Rong, Christoph Rosner, Marcel Andre Rump, H. S. Sang, Andrei V. Sarantsev, Yasemin Schelhaas, Claudius Schnier, Karin Schönning, Marco Scodeggio, D. C. Shan, Wei Shan, Xinyu Shan, M. Shao, Chengping Shen, P. X. Shen, X. Y. Shen, B. A. Shi, Huangchao Shi, Rongsheng Shi, X. Shi, X. D Shi, Weimin Song, Yunxuan Song, Stefano Sosio, Stefano Spataro, K. X. Su, F. F. Sui, Gongxing Sun, H. K. Sun, J. F. Sun, Liang Sun, S. S. Sun, T. Sun, Wenyu Sun, X Sun, Y. J. Sun, Y. K. Sun, Y. Z. Sun, Z. T. Sun, Y. H. Tan, Yaxing Tan, C. J. Tang, G. Y. Tang, J. Tang, J. X. Teng, Viktor Thoren, Ismail Uman, C. W. Wang, D. Y. Wang, H. J. Wang, H. P. Wang, K. Wang, Liangliang Wang, M. Wang, M. Z. Wang, Meng Wang, W. H. Wang, Weiping Wang, X. Wang, Xiongfei Wang, X. L. Wang, Y. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. Y. Wang, Ziyi Wang, Zongyuan Wang, D. H. Wei, P. Weidenkaff, Frederik Weidner, Shuopin Wen, D. J. White, Ulrich Wiedner, Guy Wilkinson, Magnus Wolke, Leonard Wollenberg, Jinfei Wu, Linghui Wu, Lianjin Wu, Xiao Wu, Z. Wu, L. Xia, H. Xiao, S. Y. Xiao, Y. J. Xiao, Zhenjun Xiao, X. H. Xie, Y. G. Xie, Y. H. Xie, T. Y. Xing, Guofa Xu, J. J. Xu, Q. J. Xu, W. Xu, Xinping Xu, Yingchao Xu, F. Yan, Liang Yan, Liang Yan, W. B. Yan, W. C. Yan, Xu Yan, H. J. Yang, Hongxun Yang, L. Yang, R. X. Yang, S. L. Yang, S. L. Yang, Y. H. Yang, Yongxu Yang, Yifan Yang, Zhi Yang, M. Ye, Minghan Ye, J. H. Yin, Z. Y. You, Boxiang Yu, C. X. Yu, G. Yu, J. S. Yu, T. Yu, Chang-Zheng Yuan, L. Yuan, W. Yuan, X. Q. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. Yuncu, A. A. Zafar, Y. Zeng, B. X. Zhang, Guangyi Zhang, H. Zhang, H. H. Zhang, Hongyu Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, Jianyong Zhang, J. Z. Zhang, Jianyu Zhang, Jiawei Zhang, Lei Zhang, S. Zhang, S. F. Zhang, Shulei Zhang, X. D. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Yateng Zhang, Yan Zhang, Yao Zhang, Yi Zhang, Z. H. Zhang, Z. Y. Zhang, G. Zhao, J. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, Ming-Gang Zhao, Q. Zhao, Shujun Zhao, Yubin Zhao, Y. X. Zhao, Zhengguo Zhao, Alexey Zhemchugov, Bo Zheng, Jianping Zheng, Y. Zheng, Y. H. Zheng, B. Zhong, C. Zhong, L. P. Zhou, Q. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, A. N. Zhu, J. Zhu, K. Zhu, Kejun Zhu, S. H. Zhu, T. J. Zhu, W. J. Zhu, X. L. Zhu, Y. C. Zhu, Zian Zhu, B. S. Zou, Jiaheng Zou

• We report a study of the processes of e+e−→K+(D−sD∗0+D∗−sD0) based on e+e− annihilation samples collected with the BESIII detector operating at BEPCII at five center-of-mass energies ranging from 4.628 to 4.698 GeV with a total integrated luminosity of 3.7 fb−1. An excess over the known contributions of the conventional charmed mesons is observed near the D−sD∗0 and D∗−sD0 mass thresholds in the K+ recoil-mass spectrum for events collected at s√=4.681 GeV. The structure matches a mass-dependent-width Breit-Wigner line shape, whose pole mass and width are determined as (3982.5+1.8−2.6±2.1) MeV/c2 and (12.8+5.3−4.4±3.0) MeV, respectively. The first uncertainties are statistical and the second are systematic. The significance of the resonance hypothesis is estimated to be 5.3 σ over the contributions only from the conventional charmed mesons. This is the first candidate of the charged hidden-charm tetraquark with strangeness, decaying into D−sD∗0 and D∗−sD0. However, the properties of the excess need further exploration with more statistics.