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11 results on '"Z.L. Gu"'

1. Polymorphisms of exon 5, exon 7 and intron 10 of MMP2 gene and their association with wool density in Rex rabbits

Author

S.J. Chen, Y.J. Liu, T. Liu, B.J. Chen, and Z.L. Gu

Subjects
Rex rabbit, MMP2 gene, SNPs, fur, wool density, Animal culture, SF1-1100, Veterinary medicine, SF600-1100
Abstract

Wool density is an important index that influences Rex rabbit fur quality. In our earlier studies, we found some important differentially expressed genes in different wool density of Rex rabbit by cDNA microarray. Based on the outcome, we conducted an association study to identify single nucleotide polymorphisms (SNPs) of exon 1, 5, 7 and 10 of matrix metalloproteinase-2 (MMP2) gene and their ligands associated with wool density. The results showed that exon 1 and exon 10 of MMP2 gene did not occur mutation in 100 Rex rabbits, meanwhile 3 SNPs were identified in exon 5, exon 7 and intron 10 of MMP2 gene sequence respectively, the 3 mutation sites were as follows: MMP2-exon 5-26C/G, MMP2-exon 7-101C/T and MMP2-intron 10-6C/T. The 3 SNPs were all in Hardy-Weinberg equilibrium. Phenotypic correlation analysis results showed the 3 mutations lacked significant associations (P>0.05) with the wool density.

Published
2017
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3. Search for a massless particle beyond the Standard Model in the Σ+ → p + invisible decay

Author

M. Ablikim, M.N. Achasov, P. Adlarson, O. Afedulidis, X.C. Ai, R. Aliberti, A. Amoroso, Q. An, Y. Bai, O. Bakina, I. Balossino, Y. Ban, H.-R. Bao, V. Batozskaya, K. Begzsuren, N. Berger, M. Berlowski, M. Bertani, D. Bettoni, F. Bianchi, E. Bianco, 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, G.R. Che, G. Chelkov, C. Chen, C.H. Chen, Chao Chen, G. Chen, H.S. Chen, H.Y. Chen, M.L. Chen, S.J. Chen, S.L. Chen, S.M. Chen, T. Chen, X.R. Chen, X.T. Chen, Y.B. Chen, Y.Q. Chen, Z.J. Chen, Z.Y. Chen, S.K. Choi, G. Cibinetto, F. Cossio, J.J. Cui, H.L. Dai, J.P. Dai, A. Dbeyssi, R.E. de Boer, D. Dedovich, C.Q. Deng, Z.Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, B. Ding, X.X. Ding, Y. Ding, J. Dong, L.Y. Dong, M.Y. Dong, X. Dong, M.C. Du, S.X. Du, Z.H. Duan, P. Egorov, Y.H. Fan, J. Fang, S.S. Fang, W.X. Fang, Y. Fang, Y.Q. Fang, R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C.Q. Feng, J.H. Feng, Y.T. Feng, M. Fritsch, C.D. Fu, J.L. Fu, Y.W. Fu, H. Gao, X.B. Gao, Y.N. Gao, Yang Gao, S. Garbolino, I. Garzia, L. Ge, P.T. Ge, Z.W. Ge, C. Geng, E.M. Gersabeck, A. Gilman, K. Goetzen, L. Gong, W.X. Gong, W. Gradl, S. Gramigna, M. Greco, M.H. Gu, Y.T. Gu, C.Y. Guan, Z.L. Guan, A.Q. Guo, L.B. Guo, M.J. Guo, R.P. Guo, Y.P. Guo, A. Guskov, J. Gutierrez, K.L. Han, T.T. Han, X.Q. Hao, F.A. Harris, K.K. He, K.L. He, F.H. Heinsius, C.H. Heinz, Y.K. Heng, C. Herold, T. Holtmann, P.C. Hong, G.Y. Hou, X.T. Hou, Y.R. Hou, Z.L. Hou, B.Y. Hu, H.M. Hu, J.F. Hu, S.L. Hu, T. Hu, Y. Hu, G.S. Huang, K.X. Huang, L.Q. Huang, X.T. Huang, Y.P. Huang, T. Hussain, F. Hölzken, N. Hüsken, N. in der Wiesche, J. Jackson, S. Janchiv, J.H. Jeong, Q. Ji, Q.P. Ji, W. Ji, X.B. Ji, X.L. Ji, Y.Y. Ji, X.Q. Jia, Z.K. Jia, D. Jiang, H.B. Jiang, P.C. Jiang, S.S. Jiang, T.J. Jiang, X.S. Jiang, Y. Jiang, J.B. Jiao, J.K. Jiao, Z. Jiao, S. Jin, Y. Jin, M.Q. Jing, X.M. Jing, T. Johansson, S. Kabana, N. Kalantar-Nayestanaki, X.L. Kang, X.S. Kang, M. Kavatsyuk, B.C. Ke, V. Khachatryan, A. Khoukaz, R. Kiuchi, O.B. Kolcu, B. Kopf, M. Kuessner, X. Kui, N. Kumar, A. Kupsc, W. Kühn, J.J. Lane, P. Larin, L. Lavezzi, T.T. Lei, Z.H. Lei, M. Lellmann, T. Lenz, C. Li, C.H. Li, Cheng Li, D.M. Li, F. Li, G. Li, H.B. Li, H.J. Li, H.N. Li, Hui Li, J.R. Li, J.S. Li, Ke Li, L.J. Li, L.K. Li, Lei Li, M.H. Li, P.R. Li, Q.M. Li, Q.X. Li, R. Li, S.X. Li, T. Li, W.D. Li, W.G. Li, X. Li, X.H. Li, X.L. Li, X.Z. Li, Xiaoyu Li, Y.G. Li, Z.J. Li, Z.X. Li, C. Liang, H. Liang, Y.F. Liang, Y.T. Liang, G.R. Liao, L.Z. Liao, J. Libby, A. Limphirat, C.C. Lin, D.X. Lin, T. Lin, B.J. Liu, B.X. Liu, C. Liu, C.X. 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.Y. Liu, K. Liu, K.Y. Liu, Ke Liu, L. Liu, L.C. 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.D. 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. Ma, H.L. Ma, J.L. Ma, L.L. Ma, M.M. Ma, Q.M. Ma, R.Q. Ma, T. Ma, X.T. Ma, X.Y. Ma, Y. Ma, Y.M. Ma, F.E. Maas, M. Maggiora, S. Malde, 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, B. Moses, N.Yu. Muchnoi, J. Muskalla, Y. Nefedov, F. Nerling, L.S. Nie, I.B. Nikolaev, Z. Ning, S. Nisar, Q.L. Niu, W.D. Niu, Y. Niu, S.L. Olsen, Q. Ouyang, S. Pacetti, X. Pan, Y. Pan, A. Pathak, P. Patteri, Y.P. Pei, M. Pelizaeus, H.P. Peng, Y.Y. Peng, K. Peters, J.L. Ping, R.G. Ping, S. Plura, V. Prasad, F.Z. Qi, H. Qi, H.R. Qi, M. Qi, T.Y. Qi, S. Qian, W.B. Qian, C.F. Qiao, X.K. Qiao, J.J. Qin, L.Q. Qin, L.Y. Qin, X.S. Qin, Z.H. Qin, J.F. Qiu, Z.H. Qu, C.F. Redmer, K.J. Ren, A. Rivetti, M. Rolo, G. Rong, Ch. Rosner, S.N. Ruan, N. Salone, A. Sarantsev, Y. Schelhaas, K. Schoenning, M. Scodeggio, K.Y. Shan, W. Shan, X.Y. Shan, Z.J. Shang, J.F. Shangguan, L.G. Shao, M. Shao, C.P. Shen, H.F. Shen, W.H. Shen, X.Y. Shen, B.A. Shi, H. Shi, H.C. Shi, J.L. Shi, J.Y. Shi, Q.Q. Shi, S.Y. Shi, X. Shi, J.J. Song, T.Z. Song, W.M. Song, Y.J. Song, Y.X. Song, S. Sosio, S. Spataro, F. Stieler, Y.J. Su, G.B. Sun, G.X. Sun, H. Sun, H.K. Sun, J.F. Sun, K. Sun, L. Sun, S.S. Sun, T. Sun, W.Y. Sun, Y. Sun, Y.J. Sun, Y.Z. Sun, Z.Q. Sun, Z.T. Sun, C.J. Tang, G.Y. Tang, J. Tang, M. Tang, Y.A. Tang, L.Y. Tao, Q.T. Tao, M. Tat, J.X. Teng, V. Thoren, W.H. Tian, Y. Tian, Z.F. Tian, I. Uman, Y. Wan, S.J. Wang, B. Wang, B.L. Wang, Bo Wang, D.Y. Wang, F. Wang, H.J. Wang, J.J. Wang, J.P. Wang, K. Wang, L.L. Wang, M. Wang, Meng Wang, N.Y. Wang, S. Wang, T. Wang, T.J. Wang, W. Wang, W.P. Wang, X. Wang, X.F. Wang, X.J. Wang, X.L. Wang, X.N. Wang, Y. Wang, Y.D. Wang, Y.F. Wang, Y.L. Wang, Y.N. Wang, Y.Q. Wang, Yaqian Wang, Yi Wang, Z. Wang, Z.L. Wang, Z.Y. Wang, Ziyi Wang, D.H. Wei, F. Weidner, S.P. Wen, Y.R. Wen, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, C. Wu, J.F. Wu, L.H. Wu, L.J. Wu, X. Wu, X.H. Wu, Y. Wu, Y.H. Wu, Y.J. Wu, Z. Wu, L. Xia, X.M. Xian, B.H. Xiang, T. Xiang, D. Xiao, G.Y. 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, M. Xu, Q.J. Xu, Q.N. Xu, W. Xu, W.L. Xu, X.P. Xu, Y.C. Xu, Z.P. Xu, Z.S. Xu, F. Yan, L. Yan, W.B. Yan, W.C. Yan, X.Q. Yan, H.J. Yang, H.L. Yang, H.X. Yang, Tao Yang, Y. Yang, Y.F. Yang, Y.X. Yang, Yifan Yang, Z.W. Yang, Z.P. Yao, M. Ye, M.H. Ye, J.H. Yin, Z.Y. You, B.X. Yu, C.X. Yu, G. Yu, J.S. Yu, T. Yu, X.D. Yu, Y.C. Yu, C.Z. Yuan, J. Yuan, L. Yuan, S.C. Yuan, Y. Yuan, Y.J. Yuan, Z.Y. Yuan, C.X. Yue, A.A. Zafar, F.R. Zeng, S.H. Zeng, X. Zeng, Y. Zeng, Y.J. Zeng, X.Y. Zhai, Y.C. Zhai, Y.H. Zhan, A.Q. Zhang, B.L. Zhang, B.X. Zhang, D.H. Zhang, G.Y. Zhang, H. Zhang, H.C. Zhang, H.H. Zhang, H.Q. Zhang, H.R. Zhang, H.Y. Zhang, J. Zhang, J.J. Zhang, J.L. Zhang, J.Q. Zhang, J.S. Zhang, J.W. Zhang, J.X. Zhang, J.Y. Zhang, J.Z. Zhang, Jianyu Zhang, L.M. Zhang, Lei Zhang, P. Zhang, Q.Y. Zhang, R.Y. Zhang, Shuihan Zhang, Shulei Zhang, X.D. Zhang, X.M. Zhang, X.Y. Zhang, Y. Zhang, Y.T. Zhang, Y.H. Zhang, Y.M. Zhang, Yan Zhang, Yao Zhang, Z.D. Zhang, Z.H. Zhang, Z.L. Zhang, Z.Y. Zhang, Z.Z. Zhang, G. Zhao, J.Y. Zhao, J.Z. Zhao, Lei Zhao, Ling Zhao, M.G. Zhao, N. Zhao, R.P. Zhao, S.J. Zhao, Y.B. Zhao, Y.X. Zhao, Z.G. Zhao, A. Zhemchugov, B. Zheng, B.M. Zheng, J.P. Zheng, W.J. Zheng, Y.H. Zheng, B. Zhong, X. Zhong, H. Zhou, J.Y. Zhou, L.P. Zhou, S. Zhou, X. Zhou, X.K. Zhou, X.R. Zhou, X.Y. Zhou, Y.Z. Zhou, J. Zhu, K. Zhu, K.J. Zhu, K.S. Zhu, L. Zhu, L.X. Zhu, S.H. Zhu, S.Q. Zhu, T.J. Zhu, W.D. Zhu, Y.C. Zhu, Z.A. Zhu, J.H. Zou, and J. Zu

Subjects
BESIII, FCNC process, Hyperon decay, BSM particle, Physics, QC1-999
Abstract

A massless particle beyond the Standard Model is searched for in the two-body decay Σ+→p+invisible using (1.0087±0.0044)×1010 J/ψ events collected at a center-of-mass energy of s=3.097GeV with the BESIII detector at the BEPCII collider. No significant signal is observed, and the upper limit on the branching fraction B(Σ+→p+invisible) is determined to be 3.2×10−5 at the 90% confidence level. This is the first search for a flavor-changing neutral current process with missing energy in hyperon decays which plays an important role in constraining new physics models.

Published
2024
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5. Determination of spin and parity of D(s)⁎ mesons

Author

M. Ablikim, M.N. Achasov, P. Adlarson, R. Aliberti, A. Amoroso, M.R. An, Q. An, Y. Bai, O. Bakina, I. Balossino, Y. Ban, V. Batozskaya, K. Begzsuren, N. Berger, M. Berlowski, 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, T.T. 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, Y.Q. Chen, Z.J. Chen, W.S. Cheng, S.K. Choi, X. Chu, G. Cibinetto, S.C. Coen, 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, B. Ding, X.X. Ding, 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, Y.W. 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, S. Gramigna, M. Greco, M.H. Gu, Y.T. Gu, C.Y Guan, Z.L. Guan, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guo, A. Guskov, X.T. H., 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, T. Holtmann, P.C. Hong, 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, T. Hussain, N Hüsken, W. Imoehl, M. Irshad, J. Jackson, S. Jaeger, S. Janchiv, 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, T.J. Jiang, X.S. Jiang, Y. Jiang, J.B. Jiao, Z. Jiao, S. Jin, Y. Jin, M.Q. Jing, T. Johansson, X. K., S. Kabana, N. Kalantar-Nayestanaki, X.L. Kang, X.S. Kang, R. Kappert, M. Kavatsyuk, B.C. Ke, A. Khoukaz, R. Kiuchi, R. Kliemt, L. Koch, O.B. Kolcu, B. Kopf, 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, Hui Li, J.R. 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, T. Li, W.D. Li, W.G. Li, X.H. Li, X.L. Li, Xiaoyu Li, Y.G. Li, Z.J. 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, D.X. Lin, T. Lin, B.J. Liu, B.X. 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, L.C. 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, J.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, 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, C.F. Qiao, J.J. Qin, L.Q. Qin, X.P. Qin, X.S. Qin, Z.H. Qin, J.F. Qiu, S.Q. Qu, C.F. Redmer, K.J. Ren, A. Rivetti, V. Rodin, M. Rolo, G. Rong, Ch. Rosner, S.N. Ruan, N. Salone, A. Sarantsev, Y. Schelhaas, 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.L. Shi, J.Y. Shi, Q.Q. Shi, R.S. Shi, X. Shi, J.J. Song, T.Z. Song, W.M. Song, Y.J. Song, Y.X. Song, S. Sosio, S. Spataro, F. Stieler, Y.J. Su, G.B. Sun, G.X. Sun, H. Sun, H.K. Sun, J.F. Sun, K. Sun, L. Sun, S.S. Sun, T. Sun, W.Y. Sun, Y. Sun, Y.J. Sun, Y.Z. Sun, Z.T. Sun, Y.X. Tan, C.J. Tang, G.Y. Tang, J. Tang, Y.A. Tang, L.Y Tao, Q.T. Tao, M. Tat, J.X. Teng, V. Thoren, W.H. Tian, Y. Tian, Z.F. Tian, I. Uman, B. Wang, B.L. Wang, Bo Wang, C.W. Wang, D.Y. Wang, F. Wang, H.J. Wang, H.P. Wang, K. Wang, L.L. Wang, M. Wang, Meng Wang, S. Wang, T. Wang, T.J. Wang, W. Wang, W.H. Wang, W.P. Wang, X. Wang, X.F. Wang, X.J. Wang, X.L. Wang, Y. Wang, Y.D. Wang, Y.F. Wang, Y.H. Wang, Y.N. Wang, Y.Q. Wang, Yaqian Wang, Yi Wang, Z. Wang, Z.L. Wang, Z.Y. Wang, Ziyi Wang, D. Wei, D.H. Wei, F. Weidner, S.P. Wen, C.W. Wenzel, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, C. Wu, J.F. Wu, L.H. Wu, L.J. Wu, X. Wu, X.H. Wu, Y. Wu, Y.J Wu, Z. Wu, L. Xia, X.M. Xian, 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, W.L. Xu, X.P. Xu, Y.C. Xu, Z.P. Xu, F. Yan, L. Yan, W.B. Yan, W.C. Yan, X.Q Yan, H.J. Yang, H.L. Yang, H.X. Yang, Tao Yang, Y. Yang, Y.F. Yang, Y.X. Yang, Yifan Yang, Z.W. 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, Y.J. 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.J. Zhang, J.L. Zhang, J.Q. Zhang, J.W. Zhang, J.X. Zhang, J.Y. Zhang, J.Z. 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, W.J. Zheng, Y.H. Zheng, B. 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. 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, and J. Zu

Subjects
Charmed meson, Spin and parity, BESIII, Physics, QC1-999
Abstract

The spin and parity of the charmed mesons Ds⁎+, D⁎0 and D⁎+ are determined for the first time to be JP=1− with significances greater than 10σ over other hypotheses of 2+ and 3−, using an e+e− collision data sample with an integrated luminosity of 3.19 fb−1 collected by the BESIII detector at a center-of-mass energy of 4.178 GeV. Different spin-parity hypotheses are tested via a helicity amplitude analysis of the processes e+e−→Ds⁎+Ds−, D⁎0D0 and D⁎+D−, with Ds⁎+→Ds+γ, D⁎0→D0π0, and D⁎+→D+π0. The results confirm the quark model predictions.

Published
2023
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6. Search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe

Author

M. Ablikim, M.N. Achasov, P. Adlarson, R. Aliberti, A. Amoroso, M.R. An, Q. An, Y. Bai, O. Bakina, I. Balossino, Y. Ban, V. Batozskaya, 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, T.T. 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, Y.Q. Chen, Z.J. Chen, W.S. Cheng, S.K. Choi, X. Chu, G. Cibinetto, S.C. Coen, 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, B. Ding, X.X. Ding, 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, Y.W. 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, S. Gramigna, M. Greco, M.H. Gu, Y.T. Gu, C.Y. Guan, Z.L. Guan, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guo, A. Guskov, X.T. H, 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, T. Holtmann, P.C. Hong, 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, T. Hussain, N. Hüsken, W. Imoehl, M. Irshad, J. Jackson, S. Jaeger, S. Janchiv, 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, T.J. Jiang, X.S. Jiang, Y. Jiang, J.B. Jiao, Z. Jiao, S. Jin, Y. Jin, M.Q. Jing, T. Johansson, X. K, S. Kabana, N. Kalantar-Nayestanaki, X.L. Kang, X.S. Kang, R. Kappert, M. Kavatsyuk, B.C. Ke, A. Khoukaz, R. Kiuchi, R. Kliemt, L. Koch, O.B. Kolcu, B. Kopf, 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, Hui Li, J.R. 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, T. Li, W.D. Li, W.G. Li, X.H. Li, X.L. Li, Xiaoyu Li, Y.G. Li, Z.J. 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, D.X. Lin, T. Lin, B.J. Liu, B.X. 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, L.C. 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, J.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, 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, C.F. Qiao, J.J. Qin, L.Q. Qin, X.P. Qin, X.S. Qin, Z.H. Qin, J.F. Qiu, S.Q. Qu, C.F. Redmer, K.J. Ren, A. Rivetti, V. Rodin, M. Rolo, G. Rong, Ch. Rosner, S.N. Ruan, N. Salone, A. Sarantsev, Y. Schelhaas, 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.L. Shi, J.Y. Shi, Q.Q. Shi, R.S. Shi, X. Shi, J.J. Song, T.Z. Song, W.M. Song, Y.J. Song, Y.X. Song, S. Sosio, S. Spataro, F. Stieler, Y.J. Su, G.B. Sun, G.X. Sun, H. Sun, H.K. Sun, J.F. Sun, K. Sun, L. Sun, S.S. Sun, T. Sun, W.Y. Sun, Y. Sun, Y.J. Sun, Y.Z. Sun, Z.T. Sun, Y.X. Tan, C.J. Tang, G.Y. Tang, J. Tang, Y.A. Tang, L.Y. Tao, Q.T. Tao, M. Tat, J.X. Teng, V. Thoren, W.H. Tian, Y. Tian, Z.F. Tian, I. Uman, B. Wang, B.L. Wang, Bo Wang, C.W. Wang, D.Y. Wang, F. Wang, H.J. Wang, H.P. Wang, K. Wang, L.L. Wang, M. Wang, Meng Wang, S. Wang, T. Wang, T.J. Wang, W. Wang, W.H. Wang, W.P. Wang, X. Wang, X.F. Wang, X.J. Wang, X.L. Wang, Y. Wang, Y.D. Wang, Y.F. Wang, Y.H. Wang, Y.N. Wang, Y.Q. Wang, Yaqian Wang, Yi Wang, Z. Wang, Z.L. Wang, Z.Y. Wang, Ziyi Wang, D. Wei, D.H. Wei, F. Weidner, S.P. Wen, C.W. Wenzel, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, C. Wu, J.F. Wu, L.H. Wu, L.J. Wu, X. Wu, X.H. Wu, Y. Wu, Y.J. Wu, Z. Wu, L. Xia, X.M. Xian, 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, W.L. Xu, X.P. Xu, Y.C. Xu, Z.P. Xu, F. Yan, L. Yan, W.B. Yan, W.C. Yan, X.Q. Yan, H.J. Yang, H.L. Yang, H.X. Yang, Tao Yang, Y. Yang, Y.F. Yang, Y.X. Yang, Yifan Yang, Z.W. 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, Y.J. 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.J. Zhang, J.L. Zhang, J.Q. Zhang, J.W. Zhang, J.X. Zhang, J.Y. Zhang, J.Z. 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, W.J. Zheng, Y.H. Zheng, B. 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. 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, and J. Zu

Subjects
BESIII, Λc+ baryon, Semi-leptonic decays, Branching fractions, Physics, QC1-999
Abstract

We search for the semi-leptonic decays Λc+→Λπ+π−e+νe and Λc+→pKS0π−e+νe in a sample of 4.5fb−1 of e+e− annihilation data collected in the center-of-mass energy region between 4.600GeV and 4.699GeV by the BESIII detector at the BEPCII. No significant signals are observed, and the upper limits on the decay branching fractions are set to be B(Λc+→Λπ+π−e+νe)

Published
2023
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7. Search for an axion-like particle in radiative J/ψ decays

Author

M. Ablikim, M.N. Achasov, P. Adlarson, 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, T.T. 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, Y.Q. Chen, Z.J. Chen, W.S. Cheng, S.K. Choi, X. Chu, G. Cibinetto, S.C. Coen, 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, Y.W. 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, M.H. Gu, Y.T. Gu, C.Y. Guan, Z.L. Guan, A.Q. Guo, L.B. Guo, R.P. Guo, Y.P. Guo, A. Guskov, X.T. H., 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, T. Holtmann, P.C. Hong, 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, T. Hussain, N. Hüsken, W. Imoehl, M. Irshad, J. Jackson, S. Jaeger, S. Janchiv, 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, T.J. Jiang, X.S. Jiang, Y. Jiang, J.B. Jiao, Z. Jiao, S. Jin, Y. Jin, M.Q. Jing, T. Johansson, X. K., S. Kabana, N. Kalantar-Nayestanaki, X.L. Kang, X.S. Kang, R. Kappert, M. Kavatsyuk, B.C. Ke, A. Khoukaz, R. Kiuchi, R. Kliemt, L. Koch, O.B. Kolcu, B. Kopf, 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, Hui Li, J.R. 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.J. 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, D.X. Lin, T. Lin, B.X. Liu, 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, L.C. 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, J.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, 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, C.F. Qiao, J.J. Qin, L.Q. Qin, X.P. Qin, X.S. Qin, Z.H. Qin, J.F. Qiu, S.Q. Qu, C.F. Redmer, K.J. Ren, A. Rivetti, V. Rodin, M. Rolo, G. Rong, Ch. Rosner, S.N. Ruan, A. Sarantsev, Y. Schelhaas, 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, T.Z. Song, W.M. Song, Y.X. Song, S. Sosio, S. Spataro, F. Stieler, Y.J. Su, G.B. Sun, G.X. Sun, H. Sun, H.K. Sun, J.F. Sun, K. Sun, L. Sun, S.S. Sun, T. Sun, W.Y. Sun, Y. Sun, Y.J. Sun, Y.Z. Sun, Z.T. Sun, Y.X. Tan, C.J. Tang, G.Y. Tang, J. Tang, Y.A. Tang, L.Y. Tao, Q.T. Tao, M. Tat, J.X. Teng, V. Thoren, W.H. Tian, Y. Tian, Z.F. 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, Meng Wang, S. Wang, T. Wang, T.J. Wang, W. Wang, W.H. Wang, W.P. Wang, X. Wang, X.F. Wang, X.J. Wang, X.L. Wang, Y. Wang, Y.D. Wang, Y.F. Wang, Y.H. Wang, Y.N. Wang, Y.Q. Wang, Yaqian Wang, Yi Wang, Z. Wang, Z.L. Wang, Z.Y. Wang, Ziyi Wang, D. Wei, D.H. Wei, F. Weidner, S.P. Wen, C.W. Wenzel, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, C. Wu, J.F. Wu, L.H. Wu, L.J. Wu, X. Wu, X.H. Wu, Y. Wu, Y.J. Wu, Z. Wu, L. Xia, X.M. Xian, 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, X.Q. Yan, H.J. Yang, H.L. Yang, H.X. Yang, Tao Yang, Y. 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.J. Zhang, J.L. Zhang, J.Q. Zhang, J.W. Zhang, J.X. Zhang, J.Y. Zhang, J.Z. 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, W.J. Zheng, Y.H. Zheng, B. 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. 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, and J. Zu

Subjects
BESIII, Axion-like particle, Pseudo-Goldstone boson, Physics, QC1-999
Abstract

We search for an axion-like particle (ALP) a through the process ψ(3686)→π+π−J/ψ, J/ψ→γa, a→γγ in a data sample of (2.71±0.01)×109 ψ(3686) events collected by the BESIII detector. No significant ALP signal is observed over the expected background, and the upper limits on the branching fraction of the decay J/ψ→γa and the ALP-photon coupling constant gaγγ are set at 95% confidence level in the mass range of 0.165≤ma≤2.84GeV/c2. The limits on B(J/ψ→γa) range from 8.3×10−8 to 1.8×10−6 over the search region, and the constraints on the ALP-photon coupling are the most stringent to date for 0.165≤ma≤1.468GeV/c2.

Published
2023
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9. Prediction of Notched Strength of 3D Carbon Carbon Materials Under Tension with Small Off-Axis Angle, Part II

Author

Z.L. Gu and null Peiguang Liu

Subjects
Mechanics of Materials, Mechanical Engineering, Materials Chemistry, Ceramics and Composites, Physics::Optics
Abstract

Under tension with small off-axis angle, the notch in a plane specimen of 3D carbon carbon material propagates self-similarly at first. Then, the specimen is sheared to rupture along the direction of the fiber bundles in some of the layers and perpendicular to the fiber bundles in the remaining layers, as the number of broken fiber bundles reaches a critical value rc. The failure is catastrophic. No additional load is needed to break more fiber bundles after the first fiber bundle in front of notch tip is broken. The observation suggests that the notched strength of 3D carbon carbon specimen is dictated by the tensile strength of fiber bundle at notch tip, as in the case of simple tension. The difference lies only in that the fiber bundle in this case is subjected to shear stresses besides tensile stresses and the shear stress substantially reduces its tensile strength. Experimental mea surements of tensile and shear strength of fiber bundles under combined tensile and shear stresses were performed. The stress field near the notch tip was computed using the finite element method based on a global-local concept. Finally, the notched strength of 3D car bon carbon specimen was calculated and ratios of rc/n (n is the total number of fiber bundles in the width direction) were also predicted. The predictions match the experimen tal results very well.

Published
1990

10. Prediction of impact damage region in SMC composites

Author

Z.L. Gu and C.T. Sun

Subjects
Materials science, business.industry, Composite number, Ceramics and Composites, Sheet moulding compound, Boundary (topology), Izod impact strength test, Structural engineering, Composite material, business, Finite element method, Civil and Structural Engineering, Strain energy
Abstract

A failure criterion based on strain energy concepts was proposed for predicting the impact region in an SMC-R50 composite. The finite element method, in conjunction with an experimentally determined contact law, was used to perform the dynamic impact analysis. Comparison of the predicted impact damage boundary with the experimental results showed good agreement.

Published
1987

11. Reduction of Flexural Properties in an SMC Composite Due to Impact

Author

C.T. Sun and Z.L. Gu

Subjects
Materials science, Polymers and Plastics, Three point flexural test, Mechanical Engineering, Composite number, Flexural rigidity, Gauge (firearms), Finite element method, Shock (mechanics), Flexural strength, Mechanics of Materials, Materials Chemistry, Ceramics and Composites, Sheet moulding compound, Composite material
Abstract

Thickness change in SMC-R50 composite panels was used as a parameter to gauge impact-induced damage. Relations between thickness change and reductions in bending rigidity and bending strength were determined experimentally. These relations were then used in a finite element analysis to predict residual flexural stiffness and strength of SMC panels after impact. Analytical predictions were compared with experimental data.

Published
1987

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