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1. Search for hidden-charm tetraquark with strangeness in *

Author

M. Ablikim, M. N. Achasov, P. Adlarson, M. Albrecht, R. Aliberti, A. Amoroso, M. R. An, Q. An, Y. Bai, O. Bakina, R. Baldini Ferroli, I. Balossino, Y. Ban, V. Batozskaya, D. Becker, K. Begzsuren, N. Berger, M. Bertani, D. Bettoni, F. Bianchi, E. Bianco, J. Bloms, A. Bortone, I. Boyko, R. A. Briere, A. Brueggemann, H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, S. A. Cetin, J. F. Chang, W. L. Chang, G. R. Che, G. Chelkov, C. Chen, Chao Chen, G. Chen, H. S. Chen, M. L. Chen, S. J. Chen, S. M. Chen, T. Chen, X. R. Chen, X. T. Chen, Y. B. Chen, Z. J. Chen, W. S. Cheng, S. K. Choi, X. Chu, G. Cibinetto, F. Cossio, J. J. Cui, H. L. Dai, J. P. Dai, A. Dbeyssi, R. E. de Boer, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, Y. Ding, J. Dong, L. Y. Dong, M. Y. Dong, X. Dong, S. X. Du, Z. H. Duan, P. Egorov, Y. L. Fan, J. Fang, S. S. Fang, W. X. Fang, Y. Fang, R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, J. H. Feng, K Fischer, M. Fritsch, C. Fritzsch, C. D. Fu, H. Gao, Y. N. Gao, Yang Gao, S. Garbolino, I. Garzia, P. T. Ge, Z. W. Ge, C. Geng, E. M. Gersabeck, A Gilman, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, M. Greco, L. M. Gu, M. H. Gu, Y. T. Gu, C. Y Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. P. Guo, A. Guskov, W. Y. Han, X. Q. Hao, F. A. Harris, K. K. He, K. L. He, F. H. Heinsius, C. H. Heinz, Y. K. Heng, C. Herold, G. Y. Hou, Y. R. Hou, Z. L. Hou, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, K. X. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, Z. Huang, T. Hussain, N Hüsken, W. Imoehl, M. Irshad, J. Jackson, S. Jaeger, S. Janchiv, E. Jang, J. H. Jeong, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, Y. Y. Ji, Z. K. Jia, P. C. Jiang, S. S. Jiang, X. S. Jiang, Y. Jiang, J. B. Jiao, Z. Jiao, S. Jin, Y. Jin, M. Q. Jing, T. Johansson, S. Kabana, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, R. Kappert, M. Kavatsyuk, B. C. Ke, I. K. Keshk, A. Khoukaz, R. Kiuchi, R. Kliemt, L. Koch, O. B. Kolcu, B. Kopf, M. Kuemmel, M. Kuessner, A. Kupsc, W. Kühn, J. J. Lane, J. S. Lange, P. Larin, A. Lavania, L. Lavezzi, T. T. Lei, Z. H. Lei, H. Leithoff, M. Lellmann, T. Lenz, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, H. B. Li, H. J. Li, H. N. Li, J. Q. Li, J. S. Li, J. W. Li, Ke Li, L. J Li, L. K. Li, Lei Li, M. H. Li, P. R. Li, S. X. Li, S. Y. Li, T. Li, W. D. Li, W. G. Li, X. H. Li, X. L. Li, Xiaoyu Li, Y. G. Li, Z. X. Li, Z. Y. Li, C. Liang, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, L. Z. Liao, J. Libby, A. Limphirat, C. X. Lin, D. X. Lin, T. Lin, B. J. Liu, C. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, G. M. Liu, H. Liu, H. B. Liu, H. M. Liu, Huanhuan Liu, Huihui Liu, J. B. Liu, J. L. Liu, J. Y. Liu, K. Liu, K. Y. Liu, Ke Liu, L. Liu, Lu Liu, M. H. Liu, P. L. Liu, Q. Liu, S. B. Liu, T. Liu, W. K. Liu, W. M. Liu, X. Liu, Y. Liu, Y. B. Liu, Z. A. Liu, Z. Q. Liu, X. C. Lou, F. X. Lu, H. J. Lu, J. G. Lu, X. L. Lu, Y. Lu, Y. P. Lu, Z. H. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, Y. F. Lyu, F. C. Ma, H. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, R. Q. Ma, R. T. Ma, X. Y. Ma, Y. Ma, F. E. Maas, M. Maggiora, S. Maldaner, S. Malde, Q. A. Malik, A. Mangoni, Y. J. Mao, Z. P. Mao, S. Marcello, Z. X. Meng, J. G. Messchendorp, G. Mezzadri, H. Miao, T. J. Min, R. E. Mitchell, X. H. Mo, N. Yu. Muchnoi, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, X. Pan, Y. Pan, A. Pathak, Y. P. Pei, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, S. Plura, S. Pogodin, V. Prasad, F. Z. Qi, H. Qi, H. R. Qi, M. Qi, T. Y. Qi, S. Qian, W. B. Qian, Z. Qian, C. F. Qiao, J. J. Qin, L. Q. Qin, X. P. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, S. Q. Qu, K. H. Rashid, C. F. Redmer, K. J. Ren, A. Rivetti, V. Rodin, M. Rolo, G. Rong, Ch. Rosner, S. N. Ruan, A. Sarantsev, Y. Schelhaas, C. Schnier, K. Schoenning, M. Scodeggio, K. Y. Shan, W. Shan, X. Y. Shan, J. F. Shangguan, L. G. Shao, M. Shao, C. P. Shen, H. F. Shen, W. H. Shen, X. Y. Shen, B. A. Shi, H. C. Shi, J. Y. Shi, q. q. Shi, R. S. Shi, X. Shi, J. J. Song, W. M. Song, Y. X. Song, S. Sosio, S. Spataro, F. Stieler, P. P. Su, Y. J. Su, G. X. Sun, H. Sun, H. K. Sun, J. F. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, Y. J. Sun, Y. Z. Sun, Z. T. Sun, Y. H. Tan, Y. X. Tan, C. J. Tang, G. Y. Tang, J. Tang, L. Y. Tao, Q. T. Tao, M. Tat, J. X. Teng, V. Thoren, W. H. Tian, Y. Tian, I. Uman, B. Wang, B. L. Wang, C. W. Wang, D. Y. Wang, F. Wang, H. J. Wang, H. P. Wang, K. Wang, L. L. Wang, M. Wang, M. Z. Wang, Meng Wang, S. Wang, T. Wang, T. J. Wang, W. Wang, W. H. Wang, W. P. Wang, X. Wang, X. F. Wang, X. L. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. H. Wang, Y. Q. Wang, Yaqian Wang, Z. Wang, Z. Y. Wang, Ziyi Wang, D. H. Wei, F. Weidner, S. P. Wen, D. J. White, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, X. H. Wu, Y. Wu, Y. J Wu, Z. Wu, L. Xia, T. Xiang, D. Xiao, G. Y. Xiao, H. Xiao, S. Y. Xiao, Y. L. Xiao, Z. J. Xiao, C. Xie, X. H. Xie, Y. Xie, Y. G. Xie, Y. H. Xie, Z. P. Xie, T. Y. Xing, C. F. Xu, C. J. Xu, G. F. Xu, H. Y. Xu, Q. J. Xu, X. P. Xu, Y. C. Xu, Z. P. Xu, F. Yan, L. Yan, W. B. Yan, W. C. Yan, H. J. Yang, H. L. Yang, H. X. Yang, Tao Yang, Y. F. Yang, Y. X. Yang, Yifan Yang, M. Ye, M. H. Ye, J. H. Yin, Z. Y. You, B. X. Yu, C. X. Yu, G. Yu, T. Yu, X. D. Yu, C. Z. Yuan, L. Yuan, S. C. Yuan, X. Q. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. A. Zafar, F. R. Zeng, X. Zeng, Y. Zeng, X. Y. Zhai, Y. H. Zhan, A. Q. Zhang, B. L. Zhang, B. X. Zhang, D. H. Zhang, G. Y. Zhang, H. Zhang, H. H. Zhang, H. Q. Zhang, H. Y. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. X. Zhang, J. Y. Zhang, J. Z. Zhang, Jianyu Zhang, Jiawei Zhang, L. M. Zhang, L. Q. Zhang, Lei Zhang, P. Zhang, Q. Y. Zhang, Shuihan Zhang, Shulei Zhang, X. D. Zhang, X. M. Zhang, X. Y. Zhang, Y. Zhang, Y. T. Zhang, Y. H. Zhang, Yan Zhang, Yao Zhang, Z. H. Zhang, Z. L. Zhang, Z. Y. Zhang, G. Zhao, J. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, S. J. Zhao, Y. B. Zhao, Y. X. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, C. Zhong, X. Zhong, H. Zhou, L. P. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, Y. Z. Zhou, J. Zhu, K. Zhu, K. J. Zhu, L. X. Zhu, S. H. Zhu, S. Q. Zhu, T. J. Zhu, W. J. Zhu, Y. C. Zhu, Z. A. Zhu, J. H. Zou, J. Zu, and null (BESIII Collaboration)

Subjects
Nuclear and High Energy Physics, Astronomy and Astrophysics, Instrumentation
Abstract

We report a search for a heavier partner of the recently observed state, denoted as , in the process , based on collision data collected at the center-of-mass energies of , 4.682 and 4.699 GeV with the BESIII detector. The is of interest as it is expected to be a candidate for a hidden-charm and open-strange tetraquark. A partial-reconstruction technique is used to isolate recoil-mass spectra, which are probed for a potential contribution from ( ). We find an excess of ( ) candidates with a significance of , after considering systematic uncertainties, at a mass of . As the data set is limited in size, the upper limits are evaluated at the 90% confidence level on the product of the Born cross sections ( ) and the branching fraction ( ) of , under different assumptions of the mass from 4.120 to 4.140 MeV and of the width from 10 to 50 MeV at the three center-of-mass energies. The upper limits of are found to be at the level of pb at each energy. Larger data samples are needed to confirm the state and clarify its nature in the coming years.

Published
2023

2. Evidence for the decays of and *

Author

Bibo Ke, W. B. Yan, G. A. Chelkov, Guangshun Huang, L. Yan, G. R. Liao, M. Qi, V. Prasad, M. Kuessner, S. Han, H. J. Yang, S. Pacetti, S. L. Niu, H. J. Lu, F. De Mori, J. Min, L. H. Wu, Kai Liu, J. F. Chang, A. Yuncu, M. Savrie, X. Liu, H. R. Qi, Yuxin Zhang, Ke Li, Huanhuan Liu, S. Qian, A. Q. Guo, C. W. Wang, G. Rong, G. Felici, Meng Wang, Yi Jin, N. Hü sken, J. W. Li, L. Xia, Z. H. Qin, M. Y. Dong, S. B. Liu, L. Zhang, Y. Nefedov, S. X. Du, Z. L. Dou, X. Y. Zhou, M. Richter, H. J. Li, F. E. Maas, T. Hu, Jun-Yi Zhang, Y. P. Guo, Y. J. Xiao, Xiaolu Ji, Serkant Ali Cetin, H. B. Liu, Z. P. Zhang, W. P. Wang, Y. Zhang, M. Kuemmel, Matthew Glenn Kurth, W. Shan, P. L. Wang, Zongyuan Wang, J. H. Zou, Yunlong Zhang, S. Nisar, A. Calcaterra, Z. G. Zhao, S. Fegan, K. Begzsuren, F. Bianchi, O. Bakina, L. Z. Liao, J. Q. Zhang, D. Y. Liu, H. L. Liu, F. Y. Li, S. S. Sun, J. Libby, Q. Ouyang, P. L. Chen, D. W. Bennett, M. Albrecht, S. S. Fang, Y. Bai, D. Bettoni, X. Q. Li, Y. F. Long, X. F. Wang, X. S. Qin, Shuangli Yang, X. N. Ma, Y. B. Liu, Y. T. Liang, H. H. Zhang, P. X. Shen, M. Greco, Xiao Cai, Xiao-Rui Lyu, Yaquan Fang, A. Pitka, Y. H. Xie, J. Pellegrino, Z. H. Wang, W. G. Li, W. D. Li, B. T. Tsednee, Tao Luo, Cui Li, Q. M. Ma, Y. K. Sun, R. Farinelli, Xiaoyu Zhou, A. Mustafa, R. E. Mitchell, L. J. Wu, Q. An, Jialun Ping, X. K. Zhou, Fang Liu, S. Maldaner, Q. L. Xiu, K. Zhang, X. Y. Zhang, Zhiqing Zhang, B. Wang, J. H. Yin, M. Maggiora, Ling Zhao, W. X. Gong, W. M. Song, J. Zhuang, B. Kopf, C. F. Redmer, J. D. Lu, H. L. Ma, Y. G. Gao, Dan Wang, D. M. Li, S. Zhu, Zhiqing Liu, I. Denysenko, W. C. Yan, M. Kavatsyuk, Y. J. Mo, J. B. Liu, J. C. Li, Xiao-yan Li, H. Muramatsu, K. Y. Liu, C. Sowa, B. X. Yu, Y. Yuan, Y. S. Zhu, Yu Zhang, T. Johansson, Lei Zhao, Z. L. Hou, Y. H. Zheng, Cong-Feng Qiao, A. Zhemchugov, X. T. Huang, Q. P. Ji, S. Spataro, X. P. Xu, Lei Li, K. L. He, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, K. Peters, Magnus Wolke, K. Schoenning, Q. Y. Li, N. Yu. Muchnoi, Z. Wu, Y. Fu, B. S. Zou, M. Z. Wang, Y. J. Sun, Yifan Yang, J. G. Lu, Y. F. Wang, Y. F. Liang, M. Pelizaeus, M. X. Luo, Y. P. Lu, M. G. Zhao, Y. H. Yang, I. Tapan, D. V. Dedovich, X. X. Ma, Xu Zhou, J. Dong, M. Shao, Y. T. Gu, D. P. Jin, O. B. Kolcu, T. J. Min, X. S. Kang, G. F. Cao, P. Kiese, J. F. Hu, Y. H. Yan, J. F. Sun, Niklaus Berger, H. S. Chen, R. P. Guo, J. Zhu, B. X. Zhang, X D Shi, Y. C. Zhu, P. L. Li, S. L. Olsen, R. A. Briere, L. Lavezzi, Y. J. Mao, Z. X. Meng, X. A. Xiong, J. Y. Liu, C. J. Tang, Y. Hu, Igor Boyko, J. B. Jiao, Liqing Xu, X. Y. Shen, A. A. Zafar, H. X. Yang, N. Qin, I. Garzia, Muhammad Irshad, Zhiyong Zhang, C. Z. Yuan, Z. Y. Wang, X. S. Jiang, L. Koch, A. Khoukaz, M. Destefanis, X. Q. Hao, Q. Liu, S. Marcello, Y. Zeng, Zhe Sun, S. Lusso, Y. Ding, B. J. Liu, H. Liang, Yi Chen, T. Held, S. J. Zhao, X. L. Gao, B. Garillon, R. Baldini Ferroli, Huihui Liu, L. L. Ma, L. Gong, A. Amoroso, H. B. Li, A. G. Denig, C. L. Luo, X. Xia, Q. Zhou, D. Xiao, X. Y. Jiang, M. M. Ma, C. C. Zhang, B. Zhong, L. B. Guo, K. H. Rashid, W. Kühn, Z. Y. You, Z. A. Zhu, Michael Papenbrock, F. Yan, M. Bertani, Bo Zhang, Z. Ning, Xiaofeng Zhu, J. Z. Zhang, Z. Haddadi, M. L. Chen, Q. Gao, Y. N. Gao, K. Wang, J. Z. Fan, J. L. Zhang, Jian Fang, R. Kiuchi, H. Y. Sheng, I. B. Nikolaev, C. X. Yu, J. G. Messchendorp, O. Cakir, J. P. Dai, A. Dbeyssi, A. N. Zhu, S. J. Chen, Y. Pan, T. Weber, C. P. Shen, Z. J. Xiao, L. Yang, C. Dong, J. Chai, J. J. Song, S. Sosio, L. Sun, A. Sarantsev, Q. J. Xu, M. Fritsch, B. Zheng, R. G. Ping, Qiunan Xu, Haiping Peng, T. Khan, W. L. Chang, D. H. Wei, P. R. Li, J. S. Lange, M. Kornicer, Jiajun Zheng, Ulrich Wiedner, Angelo Rivetti, J. C. Chen, Tao Zhang, Xuanhong Lou, R. X. Yang, G. X. Sun, J. V. Bennett, H. L. Dai, S. F. Zhang, F. Li, S. Leiber, S. Ahmed, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Y. X. Yang, Z. A. Liu, Nasser Kalantar-Nayestanaki, T. Hussain, H. Y. Zhang, F. Feldbauer, F. A. Harris, A. Julin, R. Poling, C. Morales Morales, Xu Shan, Z. L. Huang, Feng Liu, P. F. Duan, X. Y. Ma, H. Leithoff, Y. Ban, P. Weidenkaff, F. H. Heinsius, Y. T. Tan, Fenfen An, S. P. Wen, M. Ablikim, B. L. Wang, Xiaozhong Huang, T. C. Zhao, Haiwen Liu, Joachim Pettersson, Ke Liu, W. Gradl, M. Ripka, X. R. Zhou, Cheng Li, Q. A. Malik, G. Mezzadri, Q. Zhao, Y. Z. Sun, G. F. Chen, D. Y. Wang, X. H. Sun, J. Y. Zhang, X. H. Mo, L. S. Wang, Yuguang Xie, Xiang Zhou, I. K. Keshk, Andrzej Kupsc, M. Ye, L. M. Gu, M. N. Achasov, L. P. Zhou, C. X. Lin, M. Rump, Gang Zhao, X. Tang, Y. M. Ma, Z. P. Mao, F. C. Ma, Y. K. Heng, Z. J. Sun, Tao Li, L. L. Wang, H. Cai, M. Rolo, Z. Gao, Ch. Rosner, M. H. Ye, J. Z. Zhao, F. Cossio, K. J. Zhu, M. H. Gu, L. Y. Dong, W. J. Zheng, J. F. Qiu, X. B. Ji, M. Tiemens, L. Fava, P. Patteri, Yang Zhang, R. Kliemt, A. Mangoni, A. Guskov, S. Nakhoul, Jie Yu, G. Cibinetto, Bingxuan Liu, W. S. Cheng, Yao Zhang, G. Li, A. Gilman, C. D. Fu, C. Q. Feng, Z. Y. Deng, Xingguo Li, T. Y. Qi, Y. X. Xia, S. H. Zhu, Jiawei Zhao, G. Y. Tang, Jie Zhao, D. X. Lin, H. M. Hu, Yongke Zhao, J. W. Zhang, F. Nerling, M. Alekseev, I. Uman, P. Larin, Shan Jin, K. Goetzen, Ziwei Wang, G. F. Xu, X. L. Luo, X. Y. Song, J. J. Xu, Z. Q. Yang, J. S. Huang, and C. X. Liu

Subjects
Hadronic decay, Physics, Nuclear and High Energy Physics, 010308 nuclear & particles physics, Branching fraction, Hadron, Astronomy and Astrophysics, Lambda, 01 natural sciences, Omega, Combinatorics, 0103 physical sciences, 010306 general physics, Instrumentation
Abstract

We study the hadronic decays of to the final states and , using an annihilation data sample of 567 pb-1 taken at a center-of-mass energy of 4.6 GeV with the BESIII detector at the BEPCII collider. We find evidence for the decays and with statistical significance of and , respectively. Normalizing to the reference decays and , we obtain the ratios of the branching fractions and to be and , respectively. The upper limits at the 90% confidence level are set to be and . Using BESIII measurements of the branching fractions of the reference decays, we determine % ( % ( is consistent with the previous measurement, and the branching fraction of is measured for the first time.

Published
2019

3. Observation of ${{e^+e^- \rightarrow D_s^+} \overline{ D}^{\bf (*)0} {K^-}}$ and study of the P -wave ${{D_s}}$ mesons

Author

M. Richter, Z. Ning, Q. Liu, L. L. Ma, L. Gong, S. J. Zhao, A. Amoroso, G. R. Liao, G. F. Xu, S. Gu, A. Dbeyssi, Q. J. Xu, B. Q. Wang, X. Y. Jiang, P. L. Wang, Angelo Rivetti, Muhammad Irshad, X. Y. Song, J. C. Chen, X. Tang, Xuanhong Lou, M. Qi, Dean Liu, M. Rolo, H. J. Yang, Nasser Kalantar-Nayestanaki, W. L. Chang, H. J. Li, Michael Papenbrock, F. Yan, F. De Mori, C. Morales Morales, H. Leithoff, L. Zhang, Y. Pan, J. Chai, Meng Wang, Y. H. Zheng, Shan Jin, K. Goetzen, Q. A. Malik, G. Mezzadri, F. Cossio, K. J. Zhu, J. H. Yin, Cong-Feng Qiao, Z. Q. Yang, F. Li, F. C. Ma, J. F. Hu, J. F. Sun, J. S. Huang, Y. Nefedov, C. X. Liu, N. Yu. Muchnoi, X. S. Kang, Zhiqing Liu, Y. H. Zhang, G. X. Sun, J. V. Bennett, Zhiyong Zhang, R. Farinelli, X. F. Wang, X. L. Ji, G. A. Chelkov, S. Marcello, M. Shao, Y. T. Gu, Y. Zeng, S. L. Olsen, Zhe Sun, S. Lusso, I. K. Keshk, L. J. Wu, M. Y. Dong, Q. M. Ma, Y. Zhang, A. Mustafa, Yunlong Zhang, H. L. Liu, Z. Jiao, Fu-Hu Liu, D. H. Zhang, D. Bettoni, Z. Y. Wang, W. G. Li, H. L. Ma, M. N. Achasov, L. P. Zhou, P. R. Li, J. L. Zhang, Y. J. Mo, F. F. Sui, M. H. Gu, R. Kiuchi, H. B. Liu, J. F. Qiu, S. B. Liu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, R. Poling, H. L. Jiang, L. Fava, Y. F. Wang, Y. Yuan, Y. S. Zhu, L. Sun, Jianping Zheng, Yu Zhang, H. Y. Sheng, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, Z. X. Meng, C. X. Yu, T. Johansson, J. F. Chang, C. Sowa, Y. B. Zhao, D. M. Li, H. Muramatsu, Y. M. Ma, Z. P. Mao, J. H. Zou, Tao Luo, T. J. Min, Y. K. Sun, B. Zheng, R. G. Ping, W. Imoehl, Z. J. Xiao, O. B. Kolcu, J. Dong, H. J. Lu, J. G. Lu, M. Pelizaeus, J. Fang, Z. G. Wang, S. S. Sun, H. Y. Zhang, X. N. Ma, Haiwen Liu, Y. T. Liang, Cui Li, M. Destefanis, Z. Gao, Xiaoyu Zhou, B. X. Yu, X. A. Xiong, Yang Zhang, M. Bertani, Z. Haddadi, L. Yang, Qiang Zhao, Z. A. Liu, Q. P. Ji, M. Kuemmel, Matthew Glenn Kurth, Ch. Rosner, S. Ahmed, Y. X. Yang, F. E. Maas, X. S. Qin, X. Cai, L. Lavezzi, S. Nisar, G. F. Chen, S. Spataro, X. L. Gao, X. P. Xu, W. Shan, C. J. Tang, A. A. Zafar, Y. Hu, A. Sarantsev, Y. P. Lu, Kai Liu, T. Hu, Y. Ban, P. Weidenkaff, F. H. Heinsius, J. Y. Zhang, Huanhuan Liu, M. Albrecht, A. Calcaterra, Z. G. Zhao, Minglin Ma, C. Dong, L. Z. Liao, S. Sosio, D. H. Wei, J. S. Lange, T. Hussain, S. P. Wen, X. R. Zhou, O. Bakina, H. Liang, I. B. Nikolaev, R. E. Mitchell, X. Q. Hao, Cheng Li, X. Y. Ma, G. Felici, Joachim Pettersson, Lei Li, Y. K. Heng, Y. T. Tan, S. Qian, Jialun Ping, Y. Z. Sun, Liqing Xu, H. H. Zhang, K. Zhang, X. Y. Shen, W. D. Li, W. X. Gong, H. S. Chen, W. Gradl, M. Fritsch, B. T. Tsednee, M. Ripka, Bibo Ke, P. X. Shen, Z. Wu, Xiang Zhou, Z. J. Sun, X. Y. Zhang, A. Yuncu, Jun-Yi Zhang, Y. P. Guo, D. Y. Wang, Zhiqing Zhang, W. B. Yan, C. X. Lin, S. Maldaner, M. Rump, Gang Zhao, Z. P. Zhang, Ke Liu, J. Min, Y. Fu, H. L. Dai, Igor Boyko, Y. Ding, X. H. Mo, L. S. Wang, G. F. Cao, J. C. Li, D. W. Bennett, Zujian Wang, M. H. Ye, S. Pacetti, X D Shi, Y. G. Xie, B. Kopf, X. H. Sun, J. Y. Liu, J. B. Liu, Y. Bai, K. H. Rashid, J. Zhuang, M. Kavatsyuk, Y. H. Yan, J. Libby, S. F. Zhang, Yaquan Fang, L. M. Gu, M. X. Luo, Y. J. Mao, F. A. Harris, K. L. He, L. L. Wang, H. X. Yang, J. W. Zhao, A. Pitka, D. V. Dedovich, I. Garzia, H. Cai, P. Kiese, Y. J. Sun, Yifan Yang, Ke Li, Xu Zhou, B. J. Liu, L. Koch, A. Khoukaz, Q. Gao, Y. N. Gao, M. Z. Wang, Y. C. Zhu, S. X. Du, Jimin Zhao, R. A. Briere, Magnus Wolke, Q. An, S. L. Yang, Y. F. Liang, Klaus Peters, X. K. Zhou, J. Z. Fan, K. Schoenning, Q. Y. Li, B. S. Zou, P. L. Li, Fang Liu, X. S. Jiang, Niklaus Berger, I. Denysenko, W. C. Yan, T. Held, Q. L. Xiu, B. Garillon, H. B. Li, Huihui Liu, A. G. Denig, Z. L. Dou, W. Kühn, R. Baldini Ferroli, D. P. Jin, C. L. Luo, H. H. Wang, Q. Zhou, Wei Xu, S. J. Chen, L. Y. Dong, B. Y. Zhang, C. C. Zhang, B. Zhong, L. B. Guo, J. G. Messchendorp, J. Q. Zhang, A. N. Zhu, Ulrich Wiedner, Tao Zhang, S. L. Niu, Z. Y. You, Z. A. Zhu, F. Y. Li, X. Q. Li, Y. F. Long, T. Weber, R. X. Yang, M. Greco, N. Qin, J. P. Dai, Xu Shan, X. N. Li, Zongyuan Wang, Xiao-Rui Lyu, Haiping Peng, B. X. Zhang, C. P. Shen, K. Y. Liu, Ke Wang, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, J. D. Lu, Xiaozhong Huang, T. Khan, Fenfen An, B. L. Wang, A. Q. Guo, C. W. Wang, G. Rong, T. C. Zhao, X. Liu, Q. Ouyang, Y. G. Gao, J. Zhu, Andrzej Kupsc, F. Feldbauer, W. P. Wang, Z. H. Qin, S. S. Fang, Z. L. Huang, Feng Liu, M. L. Chen, C. F. Redmer, Serkant Ali Cetin, M. Ablikim, A. Zhemchugov, X. T. Huang, Y. B. Liu, V. Prasad, S. Han, D. Y. Liu, J. B. Jiao, Yi-Tao Wang, X. L. Luo, L. H. Wu, M. Savrie, K. Begzsuren, Yi Jin, J. W. Li, L. Xia, F. Bianchi, R. M. Wang, Y. J. Xiao, N. Huesken, Guangshun Huang, L. Yan, M. Kuessner, I. Uman, Bingxuan Liu, W. S. Cheng, Yao Zhang, G. Li, A. Gilman, C. D. Fu, Y. H. Xie, C. Q. Feng, Z. Y. Deng, P. Larin, M. Maggiora, Ling Zhao, Xingguo Li, P. W. Luo, Lei Zhao, Z. L. Hou, L. K. Li, X. B. Ji, M. Tiemens, C. Z. Yuan, P. Patteri, R. Kliemt, G. Y. Tang, A. Mangoni, A. Guskov, S. Nakhoul, Jie Yu, Jie Zhao, D. X. Lin, G. Cibinetto, H. M. Hu, J. W. Zhang, F. Nerling, M. Alekseev, T. Y. Qi, Y. X. Xia, and S. H. Zhu

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, FOS: Physical sciences, Astronomy and Astrophysics, 01 natural sciences, High Energy Physics - Experiment, Luminosity, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Born approximation, 010306 general physics, Instrumentation
Abstract

Studies of $e^+e^- \to D_s^+ \overline{D}{}^{(*)0}K^-$ and the $P$-wave charmed-strange mesons are performed based on an $e^+e^-$ collision data sample corresponding to an integrated luminosity of 567 pb$^{-1}$ collected with the BESIII detector at $\sqrt{s}= 4.600$ GeV. The processes of $e^+e^-\to D_s^+ \overline{D}{*}^{0} K^-$ and $D_s^+ \overline{D}{}^{0} K^-$ are observed for the first time and are found to be dominated by the modes $D_s^+ D_{s1}(2536)^-$ and $D_s^+ D^*_{s2}(2573)^-$, respectively. The Born cross sections are measured to be $\sigma^{B}(e^+e^-\to D_s^+ \overline{D}{*}^{0} K^-) = (10.1\pm2.3\pm0.8) pb$ and $\sigma^{B}(e^+e^-\to D_s^+ \overline{D}{}^{0} K^-) = (19.4\pm2.3\pm1.6) pb$, and the products of Born cross section and the decay branching fraction are measured to be $\sigma^{B}(e^+e^-\to D_s^+D_{s1}(2536)^- + c.c.)\cdot\mathcal{B}(D_{s1}(2536)^- \to \overline{D}{*}^{0} K^-) = (7.5 \pm 1.8 \pm 0.7) pb$ and $\sigma^{B}(e^+e^-\to D_s^+ D^*_{s2}(2573)^- + c.c.)\cdot\mathcal{B}(D^*_{s2}(2573)^- \to \overline{D}{}^{0} K^-) = (19.7 \pm 2.9 \pm 2.0) pb$. For the $D_{s1}(2536)^-$ and $D^*_{s2}(2573)^-$ mesons, the masses and widths are measured to be $M(D_{s1}(2536)^-) = (2537.7 \pm 0.5 \pm 3.1)~MeV/c^2,$ $ \Gamma(D_{s1}(2536)^-)) = (1.7\pm 1.2 \pm 0.6)~\rm MeV,$ and $M(D^*_{s2}(2573)^-) = (2570.7\pm 2.0 \pm 1.7)~MeV/c^2,$ $\Gamma(D^*_{s2}(2573)^-) = (17.2 \pm 3.6 \pm 1.1)~\rm MeV.$ The spin-parity of the $D^*_{s2}(2573)^-$ meson is determined to be $J^P=2^{+}$. In addition, the process $e^+e^-\to D_s^+ \overline{D}{}^{(*)0} K^-$ are searched for using the data samples taken at four (two) center-of-mass energies between 4.416 (4.527) and 4.575 GeV, and upper limits at the $90\%$ confidence level on the cross sections are determined.

Published
2019

4. TOFPET2: a high-performance ASIC for time and amplitude measurements of SiPM signals in time-of-flight applications

Author

M. Rolo, Joao Varela, A. Di Francesco, Angelo Rivetti, Luca Pacher, R. Bugalho, João Carlos Silva, Luis B. Oliveira, and Rui F. Silva

Subjects
Physics, 010308 nuclear & particles physics, business.industry, Amplifier, Electrical engineering, Topology (electrical circuits), 01 natural sciences, Signal, Capacitance, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, CMOS, 0103 physical sciences, Current conveyor, Optoelectronics, business, Instrumentation, Electrical impedance, Mathematical Physics
Abstract

We present a readout and digitization ASIC featuring low-noise and low-power for time-of flight (TOF) applications using SiPMs. The circuit is designed in standard CMOS 110 nm technology, has 64 independent channels and is optimized for time-of-flight measurement in Positron Emission Tomography (TOF-PET). The input amplifier is a low impedance current conveyor based on a regulated common-gate topology. Each channel has quad-buffered analogue interpolation TDCs (time binning 20 ps) and charge integration ADCs with linear response at full scale (1500 pC). The signal amplitude can also be derived from the measurement of time-over-threshold (ToT). Simulation results show that for a single photo-electron signal with charge 200 (550) fC generated by a SiPM with 320 pF capacitance the circuit has 24 (30) dB SNR, 75(39) ps r.m.s. resolution, and 4(8) mW power consumption. The event rate is 600 kHz per channel, with up to 2 MHz dark counts rejection.

Published
2016

5. EndoTOFPET-US: a novel multimodal tool for endoscopy and positron emission tomography

Author

Didier Perrodin, Shingo Mandai, Hans-Christian Schultz-Coulon, Tobias Lasser, T. Harion, Tobias Reichl, M Reinecke, O. Mundler, M. Rolo, Rainer Stamen, Joerg Traub, Benjamin Frisch, J M Fischer, M. Pizzichemi, O Charles, V Vidal, John O. Prior, C Damon, Wei Shen, Edoardo Charbon, B Fürst, F B Mimoun, Nassir Navab, Pierre Jarron, D. Cortinovis, João Carlos Silva, P Courday, Etiennette Auffray, Alessandro Silenzi, R Laugier, Giulia Alice Fornaro, I Somlai Schweiger, J Kabadanian, E Mas, José Gardiazabal, A Gil-Ortiz, N. Brillouet, T. C. Meyer, Catarina Ortigao, D Lombardo, C Gaston, Sibylle Ziegler, Thomas Wendler, C Xu, Markus Schwaiger, Viesturs Veckalns, R. Bugalho, J Vishwas, Nicolas Aubry, K Gadow, E Guedj, Paul Lecoq, Joao Varela, Erika Garutti, M. Zvolsky, Aron Cserkaszky, Rui F. Silva, K. Doroud, J.-M. Fourmigue, Marco Paganoni, Aubry, N, Auffray, E, Mimoun, F, Brillouet, N, Bugalho, R, Charbon, E, Charles, O, Cortinovis, D, Courday, P, Cserkaszky, A, Damon, C, Doroud, K, M. Fischer, J, Fornaro, G, M. Fourmigue, J, Frisch, B, Fürst, B, Gardiazabal, J, Gadow, K, Garutti, E, Gaston, C, Gil Ortiz, A, Guedj, E, Harion, T, Jarron, P, Kabadanian, J, Lasser, T, Laugier, R, Lecoq, P, Lombardo, D, Mandai, S, Mas, E, Meyer, T, Mundler, O, Navab, N, Ortigão, C, Paganoni, M, Perrodin, D, Pizzichemi, M, Prior, J, Reichl, T, Reinecke, M, Rolo, M, C. Schultz Coulon, H, Schwaiger, M, Shen, W, Silenzi, A, Silva, J, Silva, R, Somlai Schweiger, I, Stamen, R, Traub, J, Varela, J, Veckalns, V, Vidal, V, Vishwas, J, Wendler, T, Xu, C, Ziegler, S, and Zvolsky, M

Subjects
Intra-operative probe, medicine.medical_specialty, Computer science, Photodetector, 01 natural sciences, Lyso, 030218 nuclear medicine & medical imaging, law.invention, 03 medical and health sciences, 0302 clinical medicine, Silicon photomultiplier, Optics, Application-specific integrated circuit, law, 0103 physical sciences, medicine, Medical physics, Multimodality system, ddc:610, Instrumentation, Mathematical Physics, Gamma camera, medicine.diagnostic_test, 010308 nuclear & particles physics, business.industry, Orientation (computer vision), Detector, 3. Good health, Positron emission tomography, Gamma camera, SPECT, PET PET/CT, coronary CT angiography (CTA), business
Abstract

The EndoTOFPET-US project aims to develop a multimodal detector to foster the development of new biomarkers for prostate and pancreatic tumors. The detector will consist of two main components: an external plate, and a PET extension to an endoscopic ultrasound probe. The external plate is an array of LYSO crystals read out by silicon photomultipliers (SiPM) coupled to an Application Specific Integrated Circuit (ASIC). The internal probe will be an highly integrated and miniaturized detector made of LYSO crystals read out by a fully digital SiPM featuring photosensor elements and digital readout in the same chip. The position and orientation of the two detectors will be tracked with respect to the patient to allow the fusion of the metabolic image from the PET and the anatomic image from the ultrasound probe in the time frame of the medical procedure. The fused information can guide further interventions of the organ, such as biopsy or in vivo confocal microscopy. © 2013 IOP Publishing Ltd and Sissa Medialab srl.

Published
2013

6. TOFPET ASIC for PET applications

Author

Giovanni Mazza, M. Rolo, F. Goncalves, J. Varela, R. Bugalho, Rui F. Silva, João Carlos Silva, and Angelo Rivetti

Subjects
Physics, medicine.medical_specialty, business.industry, Amplifier, Chip, Signal, Capacitance, Silicon photomultiplier, Application-specific integrated circuit, Current conveyor, medicine, Optoelectronics, Medical physics, business, Instrumentation, Mathematical Physics, Voltage
Abstract

A 64-channel ASIC for Time-of-Flight Positron Emission Tomography (TOF PET) imaging has been designed and simulated. The circuit is optimized for the readout of signals pro- duced by the scintillation of a L(Y)SO crystal optically coupled to a silicon photomultiplier (SiPM). Developed in the framework of the EndoTOFPET-US collaboration (1), the ASIC is integrated in the external PET plate and performs timing, digitization and data transmission for 511 keV and lower-energy events due to Compton scattering. Multi-event buffering capability allows event rates up to 100 kHz per channel. The channel cell includes a low input impedance low-noise current conveyor and two trans-impedance amplifier branches separately optimized for energy and time resolution. Two voltage mode discriminators generate respectively a fast trigger for accurate timing and a signal for time-over-threshold calcu- lation, used for charge measurement. The digitization of these signals is done by two low-power TDCs, providing coarse and fine time stamps that are saved into a local register and later managed by a global controller, which builds-up the 40-bit event data and runs the interface with the data acquisition back-end. Running at 160 MHz the chip yields a 50 ps time binning and dissipates u 7 mW per channel (simulated for 40 kHz event rate p/channel) for high capacitance photodetectors (9 mm 2 active area Silicon Photomultiplier with 320 pF terminal capacitance). The minimum SNR of 23.5 dB expected with this capacitance should allow triggering on the first photoelectron to achieve the envisaged timing performance for a TOF-PET system.

Published
2013

7. EndoTOFPET-US data acquisition system

Author

M. Rolo, C Gaston, J. Carlos Rasteiro Da Silva, J. Varela, R. Bugalho, and Rosenilce dos Santos da Silva

Subjects
medicine.medical_specialty, business.industry, Computer science, Detector, Complex event processing, Lyso, Front and back ends, Silicon photomultiplier, Data acquisition, medicine, Medical physics, business, Field-programmable gate array, Instrumentation, Mathematical Physics, Computer hardware, PCI Express
Abstract

The EndoTOFPET-US system is a multi-modal imaging system, combining Time of Flight PET (200 ps time resolution) and Ultra-Sound into an endoscopic probe. The PET component has an asymmetric configuration. The in-probe detector is based on 0.8 × 0.8 × 10 mm3 LYSO crystal fibers, read by a Geiger mode SIPM with digital output. The other detector is a 200 × 200 mm external plate, based on 3 × 3× 15 mm3 LYSO crystals, coupled to discrete 3 × 3 SiPMs read by a 64 channel ASIC. A compact data acquisition system based on digital reconfigurable electronics is proposed. FGPAs on the front end concentrate event data and transmit it to an external trigger. The probe electronics also transmit event data to the trigger. The trigger is a single PCIe card which sits directly in the acquisition computer. A preliminary event selection is performed directly in the trigger FPGA, while more sophisticated event processing is handled by software. The system is capable of handling rates up to 40 MHz from the external plate and 200 kHz from the probe.

Published
2013

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