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1. Progress on Copy Number Variation and Its Application in Forensic Medicine

Author

Q N, Xu, J Y, Zhang, C T, Li, and X L, Liu

Subjects
Genetic Markers, DNA Copy Number Variations, Forensic Medicine
Abstract

Recently, researches on copy number variation （CNV） have extended to every field, such as etiological exploration and precise treatment of complex diseases, as well as genetic breeding and evolution. The unique genetic characteristics of CNV have made people gradually believe that it could be used as a biological genetic marker to solve related problems. With the development of detection technology, application of CNV in forensic medicine will increase gradually. In this paper, the concept and development of CNV, as well as its application in forensic medicine are summarized, to provide new ideas for the practical application of CNV in the future.拷贝数变异及其在法医学中的研究进展.近年来拷贝数变异的研究已逐渐延伸至各个领域，如复杂疾病病因探索、精准治疗以及遗传育种和进化等。拷贝数变异独有的遗传学特点使得人们逐渐相信其可以成为解决相关问题的生物学遗传标记。随着检测技术的发展，拷贝数变异在法医学方面的应用也将逐渐增多。本文就拷贝数变异概念与发展以及在法医学中的应用进行阐述，为今后拷贝数变异的实际应用提供新的思路。.法医遗传学；拷贝数变异；同卵双生子；综述.

Published
2019

2. Evaluating the Efficiency of REPLI-g® Single Cell Kit for Trace DNA Amplification

Author

Q N, Xu, Q, Shen, J Y, Zhang, Y L, Zhang, L, Li, X L, Liu, and C T, Li

Subjects
Humans, DNA, Sequence Analysis, DNA, DNA Fingerprinting, Nucleic Acid Amplification Techniques, Microsatellite Repeats
Abstract

Objective To evaluate the efficiency of REPLI-g® Single Cell Kit for sample DNA amplification, and explore its application value in forensic trace DNA amplification. Methods Three DNA extraction kits were selected to extract DNA from peripheral blood of 10 unrelated individuals. The DNA yield and purity of the three DNA extraction kits were compared. According to the results of comparison, one DNA sample was selected to concentrate and dilute, then used as the initial sample of whole genome amplification （WGA）. REPLI-g® Single Cell Kit was used to amplify the initial sample at the whole genome level. The amplification yield and amplification times were calculated, and the distribution of DNA fragments was detected by agarose gel electrophoresis. GoldenREPLI-g® Single Cell Kit应用于微量DNA扩增的效率评估.目的 评估REPLI-g® Single Cell Kit应用于检材DNA扩增的效率，探讨该试剂盒在法医学微量DNA扩增方面的应用价值。 方法 选取3种微量DNA提取试剂盒，对来自10名无关个体的外周血进行DNA提取，并对所提DNA的产量和纯度进行比较。根据比较结果选取1例DNA样本进行浓缩稀释作为全基因组扩增起始样本，使用REPLI-g® Single Cell Kit对起始样本进行全基因组扩增，计算扩增产量及扩增倍数，并进行琼脂糖凝胶电泳检测片段分布情况。使用Golden法医遗传学；短串联重复；全基因组扩增；多重置换扩增；微量检材.

Published
2018

3. Measurement of ηc(1S) , ηc(2S) , and nonresonant η′π+π− production via two-photon collisions

Author

H. Ye, J. E. Fast, C. C. Zhang, M. Watanabe, U. Tamponi, C. H. Wang, S. Paul, Elisa Guido, G. Schnell, V. Babu, T. Aushev, Y. Iwasaki, Y. J. Kwon, O. Schneider, H. Ono, M. Nayak, T. Ferber, Ya-Qiu Jin, A. Garmash, Z. Drásal, P. Goldenzweig, V. Bansal, S. Sandilya, M. Iwasaki, B. G. Cheon, S. Nishida, M. Starič, Y. Unno, P. K. Behera, D. Matvienko, A. Zupanc, R. Ayad, A. Rostomyan, J. Libby, M. Lubej, X. L. Wang, V.E. Shebalin, Tao Luo, C. Kiesling, J. Haba, S. Al Said, Z. Natkaniec, A. B. Kaliyar, K. Tanida, D. M. Asner, S. Uehara, K. Chilikin, S. Korpar, T. Nanut, Y. Seino, B. K. Pal, M. Masuda, M. Bračko, S. Eidelman, Meng Wang, Y. Watanabe, E. Won, P. Pakhlov, H. Kichimi, Shih-Chang Lee, C. P. Shen, S. Uno, C. Schwanda, I. Adachi, Y. Yusa, S. Okuno, M. Salehi, J. G. Shiu, R. Pestotnik, A. M. Bakich, H. Atmacan, C. B. Van Hulse, Phillip Urquijo, Massimo Berger, G. Russo, H. Park, A. Bozek, Victoria Zhukova, N. Gabyshev, D. Červenkov, Y. Choi, K. J. Nath, Y. B. Li, A. Chen, Y. Onuki, T.-A. Shibata, Rocky Bala Garg, C. Z. Yuan, Eberhard Widmann, Andrey Sokolov, J. F. Strube, T. Uglov, W. S. Hou, Peter Kodys, B. Bhuyan, J. B. Kim, V. M. Aulchenko, H. Miyata, B. G. Fulsom, D. Cinabro, T. Czank, E. L. Barberio, Bo Wang, K. Inami, M. T. Hedges, S. Di Carlo, V. Vorobyev, G. Inguglia, V. V. Zhulanov, K. Hayasaka, K. Senyo, T. Kawasaki, G. Karyan, M. Uchida, L. K. Li, R. Mizuk, Noritaka Shimizu, Q. N. Xu, D. Liventsev, K. K. Joo, V. Savinov, D. Y. Kim, M. Merola, N. K. Nisar, H. K. Moon, G. S. Varner, H. Hayashii, Hyunyong Kim, S. Zakharov, F. Tenchini, R. Kroeger, M. E. Sevior, I. S. Lee, R. Mussa, R. Itoh, H. B. Jeon, V.N. Zhilich, A. Ishikawa, P. Križan, P. Wang, T. Sumiyoshi, Martin Ritter, I. Jaegle, K. Miyabayashi, I. Badhrees, T. Sanuki, S. Cunliffe, Y. Guan, A. Vossen, L. E. Piilonen, G. Pakhlova, R. Kulasiri, O. Seon, Vladimir Popov, Y. Sakai, Jyoti Prakash Biswal, V. Gaur, N. Dash, E. Solovieva, D. Kotchetkov, T. Mori, H. Aihara, Z. P. Zhang, A.E. Bondar, M. Takizawa, Z. Doležal, S. K. Choi, T. Julius, M. Gelb, D. Epifanov, V. Bhardwaj, T. K. Pedlar, T. Matsuda, A. Vinokurova, P. Krokovny, K. H. Kang, K. Cho, and L. Li Gioi

Subjects
Systematic error, Physics, Particle physics, Meson, 010308 nuclear & particles physics, Branching fraction, Electron–positron annihilation, Quarkonium, 01 natural sciences, KEKB, 0103 physical sciences, Pi, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics
Abstract

We report the measurement of $\gamma \gamma \to \eta_{c}(1S), \eta_{c}(2S) \to \eta' \pi^+ \pi^-$ with $\eta'$ decays to $\gamma \rho$ and $\eta \pi^+ pi^-$ using 941 fb$^{-1}$ of data collected with the Belle detector at the KEKB asymmetric-energy $e^+ e^-$ collider. The $\eta_{c}(1S)$ mass and width are measured to be $M = [2984.6\pm0.7 (stat.)\pm2.2 (syst.)] MeV/c^{2}$ and $\Gamma = [30.8^{+2.3}_{-2.2}~(stat.) \pm 2.5~(syst.)]$ MeV, respectively. First observation of $\eta_{c}(2S) \to \eta' pi^+ pi^-$ with a significance of 5.5$\sigma$ including systematic error is obtained, and the $\eta_{c}(2S)$ mass is measured to be $M = [3635.1\pm3.7~(stat.)\pm2.9~(syst.)] MeV/c^{2}$. The products of the two-photon decay width and branching fraction (B) of decays to $\eta' pi^+ pi^-$ are determined to be $\Gamma_{\gamma \gamma}B = [65.4\pm2.6~(stat.)\pm6.9~(syst.)]$ eV for $\eta_{c}(1S)$ and $[5.6^{+1.2}_{-1.1}~(stat.)\pm1.1~(syst.)]$ eV for $\eta_{c}(2S)$. A new decay mode for the $\eta_{c}(1S) \to \eta' f_{0}(2080)$ with $f_{0}(2080) \to \pi^+ pi^-$ is observed with a statistical significance of 20$\sigma$. The $f_{0}(2080)$ mass and width are determined to be $M = [2083^{+63}_{-66}~(stat.)\pm 32~(syst.)] MeV/c^{2}$ and $\Gamma = [178^{+60}_{-178}~(stat.) \pm 55~(syst.)]$ MeV. The cross sections for $\gamma \gamma \to \eta' pi^+ pi^-$ and $\eta' f_{2}(1270)$ are measured for the first time.

Published
2018
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4. Research Progress on Discrimination of Monozygotic Twins

Author

Q N, Xu, C T, Li, and X L, Liu

Subjects
Humans, Twins, Monozygotic, Criminals, Forensic Medicine, DNA Fingerprinting, Epigenesis, Genetic
Abstract

Individual identification plays an import role in the practice of forensic medicine, and often provides crucial evidence for the analysis and detection of criminal cases. However, for individual identification in complex situations, such as monozygotic （MZ） twins assumed to be genetically identical, it is impossible to distinguish one from the other by using traditional forensic DNA typing system. Therefore, how to discriminate the MZ twins has become and will continue to be one of the difficult problems in forensic field. This paper summarized the genetic and epigenetic changes recently identified in MZ pairs, which might provide a new insight to forensic discrimination of MZ twins.同卵双生子甄别研究进展.个体识别在法庭科学实践中占有重要地位，常为案件的分析和侦破提供重要法律依据。然而，对于复杂情况下的个体识别，如同卵双生子，由于两者在理论上拥有完全相同的基因组DNA，运用传统的遗传标记不能将其区分。因此，如何有效区分同卵双生子是法医学界亟待解决的难题之一。本文通过总结近年来同卵双生子在遗传和表观遗传水平上的差异规律，有望为同卵双生子甄别这一法医学难题提供新的思路。.法医遗传学；表观遗传学；个体识别；同卵双生；综述.

Published
2017

5. [Establishment of 43-plex SNP Typing System and Its Forensic Application]

Author

Y N, Li, M, Li, L, Jiang, X H, Luan, N, Liang, Q N, Xu, J S, Zhang, M C, Tang, Y N, Bian, and L Q, Chen

Subjects
Forensic Genetics, Genetic Markers, China, Genetics, Population, Polymorphism, Genetic, Asian People, Gene Frequency, Genotype, Humans, Paternity
Abstract

To evaluate the application of 43-plex SNP typing system in forensic science.The typing of 43 SNP loci in 123 unrelated Han individuals from East China was detected by MALDI-TOF-MS. The application value of 43-plex SNP typing system was assessed according to the forensic parameters of population genetics.All the 43 SNP loci of 123 individuals showed no significant departure from Hardy-Weinberg equilibrium （The 43-plex SNP typing system in present study shows a high polymorphism, which can be an effective supplement and verification for traditional STR genetic markers. It also can be used with other commercial kits for the forensic paternity testing and individual identification.

Published
2017

6. Research Progress on InDel Genetic Marker in Forensic Science

Author

X, Sheng, Y, Bao, J S, Zhang, M, Li, Y N, Li, Q N, Xu, S H, Zhang, and C T, Li

Subjects
Forensic Genetics, Genetic Markers, INDEL Mutation, DNA, DNA Fingerprinting, Polymorphism, Single Nucleotide, Alleles, Microsatellite Repeats
Abstract

Genetic markers in forensic DNA typing experienced the variable number of tandem repeats （VNTR） sequences and the short tandem repeats （STR） sequences. With the emerge of sequencing technology, the third generation of genetic markers were found out, which usually have two alleles including single nucleotide polymorphism （SNP） and insertion/deletion （InDel）, also known as biallelic genetic markers. Because of the insertions or deletions of DNA fragments, InDel genetic marker reveals DNA fragment length polymorphism and widely distributes across the whole genome. InDel genetic marker is numerous and has the characteristics of STR and SNP genetic markers, which has been applied in the fields of genetics and anthropology. This review focuses on the research progress of InDel genetic marker in forensic science, aiming to review and summarize the main research findings in recent years and provide clues for future researches.法医DNA分型的遗传标记经历了可变数目串联重复（variable number of tandem repeat，VNTR）序列和短串联重复（short tandem repeat，STR）序列。随着测序技术的产生，出现了第三代遗传标记，因其基因座通常只有两个等位基因，故又被称为二等位基因遗传标记，主要包括单核苷酸多态性（single nucleotide polymorphism，SNP）和插入/缺失（insertion/deletion，InDel）。由DNA片段插入或缺失形成的DNA长度多态性InDel遗传标记分布于整个基因组中，数目众多，兼具STR和SNP遗传标记的优势，现已应用于遗传学、人类学等领域。本文主要对InDel遗传标记在法医学领域的研究进展进行综述，旨在回顾和总结近年来的主要研究成果并为后续研究提供参考。.法医遗传学；遗传标记；综述；插入/缺失.

Published
2017

7. [Forensic Application of SiFaSTR™ 23plex DNA ID System in Han Population of Eastern China]

Author

Y, Bao, X, Sheng, J S, Zhang, M, Li, Y N, Li, Q N, Xu, C T, Li, and L Q, Chen

Subjects
China, Polymorphism, Genetic, Forensic Sciences, Paternity, DNA, Genetics, Population, Asian People, Gene Frequency, Mutation Rate, Genetic Loci, Mutation, Ethnicity, Humans, Alleles, Microsatellite Repeats
Abstract

To investigate the genetic polymorphism of 21 autosomal STR loci andTyping test of 2 000 unrelated individuals was performed using SiFaSTR™ 23plex DNA ID system. The population genetic parameters of STR loci were statistically analysed. A total of 3 198 parentage confirmed cases were detected with that system and the mutation conditions were observed in 21 autosomal STR loci.All the 21 autosomal STR loci showed no significant departure from Hardy-Weinberg equilibrium （The involved STRs are highly polymorphic in Eastern Han population with acceptable mutation rates by the SiFaSTR™ 23plex DNA ID system, which is suitable for paternity testing and individual identification.

Published
2017

8. [Assessment on Application of 24 Y-STR Loci in Forensic Science]

Author

M, L, L, Huang, X J, Wang, Y L, Chen, X, Sheng, Y N, Li, Y, Bao, L, Jiang, R X, Zhu, Q N, Xu, J S, Zhang, C T, Li, and Y N, Bian

Subjects
Forensic Genetics, Male, China, Chromosomes, Human, Y, Genetics, Population, Haplotypes, Mutation Rate, Population Groups, Forensic Sciences, Genetic Variation, Humans, Alleles
Abstract

To select a Y-STR marker system with strong haplotype identification ability, appropriate mutation rate and high compatibility and to assess its forensic application.The 24 Y-STR loci were tested by self-built fluorescent multiplex system, and the forensic assessment was conducted by 139 pairs of father-son samples collected in Jinan, Shandong province.Totally 176 alleles were identified among the 24 Y-STR loci in the sample of 139 unrelated individuals labeled with father, and the gene diversity （GD） distributed between 0.083 7 （The system of 24 Y-STR loci shows a strong individual recognition ability and low mutation rate in the population in Jinan, Shandong province, and it has good application value in forensic science.

Published
2017

9. Observation of $e^+ e^- o ηY(2175)$ at center-of-mass energies above 3.7$sim$GeV

Author

Ablikim, M., Achasov, M. N., Ahmed, S., X. C., Ai, Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., F. F., An, An, Q., Bai, J. Z., Bakina, O., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S., Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., S. X., Du, Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., C. D., Fu, Gao, Q., Gao, X. L., Gao, Y., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., M. H., Gu, Y. T., Gu, Guan, Y. H., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., K. L., He, Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, C., H. M., Hu, Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Hussain, T., Ikegami Andersson, W., Ji, Q., Q. P., Ji, X. B., Ji, X. L., Ji, Jiang, L. W., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., B. C., Ke, Kiese, P., Kliemt, R., Kloss, B., Kolcu, O. B., Kopf, B., Kornicer, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Leithoff, H., Leng, C., Li, C., Cheng, Li, D. M., Li, Li, F., F. Y., Li, Li, G., H. B., Li, H. J., Li, J. C., Li, Jin, Li, Kang, Li, Ke, Li, Lei, Li, P. R., Li, Q. Y., Li, Li, T., W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, Y. B., Li, Z. B., Li, Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Fang, Liu, Feng, Liu, Liu, H. B., Liu, H. M., Huanhuan, Liu, Huihui, Liu, Liu, J., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Y. Y., Liu, Z. A., Zhiqing, Liu, Loehner, H., Long, Y. F., Lou, X. C., H. J., Lu, J. G., Lu, Lu, Y., Y. P., Lu, Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lyu, X. R., F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, Ma, T., X. N., Ma, X. Y., Ma, Y. M., Ma, Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Marcello, S., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., X. H., Mo, Y. J., Mo, Morales Morales, C., Morello, G., Muchnoi, N. Yu., Muramatsu, H., Musiol, P., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., H. R., Qi, Qi, M., Qian, S., Qiao, C. F., Qin, L. Q., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Ripka, M., Rong, G., Rosner, Ch., Ruan, X. D., Sarantsev, A., Savrié, M., Schnier, C., Schoenning, K., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, W. M., Song, X. Y., Sosio, S., Spataro, S., Sun, G. X., Sun, J. F., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, X., Tapan, I., Thorndike, E. H., Tiemens, M., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, W., 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., Zongyuan, Wang, Weber, T., Wei, D. H., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., L. H., Wu, L. J., Wu, Wu, Z., Xia, L., Xia, L. G., Xia, Y., Xiao, D., Xiao, H., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xiu, Q. L., G. F., Xu, J. J., Xu, Xu, L., Q. J., Xu, Q. N., Xu, X. P., Xu, Yan, L., Yan, W. B., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y. X., Ye, M., M. H., Ye, Yin, J. H., You, Z. Y., B. X., Yu, C. X., Yu, J. S., Yu, Yuan, C. Z., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. Q., Zhang, X. Y., Zhang, Y. H., Zhang, Y. N., Zhang, Y. T., Yang, Zhang, Yao, Zhang, Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Lei, Zhao, Ling, Zhao, Zhao, M. G., Zhao, Q., Zhao, Q. W., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, L., Zou, B. S., and Zou, J. H.

Subjects
High Energy Physics - Experiment
Published
2017

10. Observation of Λ_{c}^{+}→nK_{S}^{0}π^{+}

Author

M, Ablikim, M N, Achasov, S, Ahmed, X C, Ai, O, Albayrak, M, Albrecht, D J, Ambrose, A, Amoroso, F F, An, Q, An, J Z, Bai, O, Bakina, R, Baldini Ferroli, Y, Ban, D W, Bennett, J V, Bennett, N, Berger, M, Bertani, D, Bettoni, J M, Bian, F, Bianchi, E, Boger, I, Boyko, R A, Briere, H, Cai, X, Cai, O, Cakir, A, Calcaterra, G F, Cao, S A, Cetin, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S, Chen, S J, Chen, X, Chen, X R, Chen, Y B, Chen, X K, Chu, G, Cibinetto, H L, Dai, J P, Dai, A, Dbeyssi, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, F, De Mori, Y, Ding, C, Dong, J, Dong, L Y, Dong, M Y, Dong, Z L, Dou, S X, Du, P F, Duan, J Z, Fan, J, Fang, S S, Fang, X, Fang, Y, Fang, R, Farinelli, L, Fava, F, Feldbauer, G, Felici, C Q, Feng, E, Fioravanti, M, Fritsch, C D, Fu, Q, Gao, X L, Gao, Y, Gao, Z, Gao, I, Garzia, K, Goetzen, L, Gong, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, R P, Guo, Y, Guo, Y P, Guo, Z, Haddadi, A, Hafner, S, Han, X Q, Hao, F A, Harris, K L, He, F H, Heinsius, T, Held, Y K, Heng, T, Holtmann, Z L, Hou, C, Hu, H M, Hu, J F, Hu, T, Hu, Y, Hu, G S, Huang, J S, Huang, X T, Huang, X Z, Huang, Z L, Huang, T, Hussain, W, Ikegami Andersson, Q, Ji, Q P, Ji, X B, Ji, X L, Ji, L W, Jiang, X S, Jiang, X Y, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, T, Johansson, A, Julin, N, Kalantar-Nayestanaki, X L, Kang, X S, Kang, M, Kavatsyuk, B C, Ke, P, Kiese, R, Kliemt, B, Kloss, O B, Kolcu, B, Kopf, M, Kornicer, A, Kupsc, W, Kühn, J S, Lange, M, Lara, P, Larin, L, Lavezzi, H, Leithoff, C, Leng, C, Li, Cheng, Li, D M, Li, F, Li, F Y, Li, G, Li, H B, Li, H J, Li, J C, Li, Jin, Li, K, Li, Lei, Li, P R, Li, Q Y, Li, T, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, Y B, 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 H, Liu, H M, Liu, J, Liu, J B, Liu, J P, Liu, J Y, Liu, K, Liu, K Y, Liu, L D, Liu, P L, Liu, Q, Liu, Q J, Liu, S B, Liu, X, Liu, Y B, Liu, Y Y, Liu, Z A, Liu, Z Q, Liu, H, Loehner, X C, Lou, H J, Lu, J G, Lu, Y, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, X R, Lyu, F C, Ma, H L, Ma, L L, Ma, M M, Ma, Q M, Ma, T, Ma, X N, Ma, X Y, Ma, Y M, Ma, F E, Maas, M, Maggiora, Q A, Malik, Y J, Mao, Z P, Mao, S, Marcello, J G, Messchendorp, G, Mezzadri, J, Min, T J, Min, R E, Mitchell, X H, Mo, Y J, Mo, C, Morales Morales, N Yu, Muchnoi, H, Muramatsu, P, Musiol, Y, Nefedov, F, Nerling, I B, Nikolaev, Z, Ning, S, Nisar, S L, Niu, X Y, Niu, S L, Olsen, Q, Ouyang, S, Pacetti, Y, Pan, P, Patteri, M, Pelizaeus, H P, Peng, K, Peters, J, Pettersson, J L, Ping, R G, Ping, R, Poling, V, Prasad, H R, Qi, M, Qi, S, Qian, C F, Qiao, L Q, Qin, N, Qin, X S, Qin, Z H, Qin, J F, Qiu, K H, Rashid, C F, Redmer, M, Ripka, G, Rong, Ch, Rosner, X D, Ruan, A, Sarantsev, M, Savrié, C, Schnier, K, Schoenning, W, Shan, M, Shao, C P, Shen, P X, Shen, X Y, Shen, H Y, Sheng, W M, Song, X Y, Song, S, Sosio, S, Spataro, G X, Sun, J F, Sun, S S, Sun, X H, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, I, Tapan, E H, Thorndike, M, Tiemens, I, Uman, G S, Varner, B, Wang, B L, Wang, D, Wang, D Y, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, W, Wang, W P, Wang, X F, Wang, Y, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z H, Wang, Z Y, Wang, T, Weber, D H, Wei, P, Weidenkaff, S P, Wen, U, Wiedner, M, Wolke, L H, Wu, L J, Wu, Z, Wu, L, Xia, L G, Xia, Y, Xia, D, Xiao, H, Xiao, Z J, Xiao, Y G, Xie, Yuehong, Xie, Q L, Xiu, G F, Xu, J J, Xu, L, Xu, Q J, Xu, Q N, Xu, X P, Xu, L, Yan, W B, Yan, W C, Yan, Y H, Yan, H J, Yang, H X, Yang, L, Yang, Y X, Yang, M, Ye, M H, Ye, J H, Yin, Z Y, You, B X, Yu, C X, Yu, J S, Yu, C Z, 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, H Y, Zhang, J, Zhang, J J, Zhang, J L, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, K, Zhang, L, Zhang, S Q, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y N, Zhang, Y T, 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, M G, Zhao, Q, Zhao, Q W, Zhao, S J, Zhao, T C, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, W J, Zheng, Y H, Zheng, B, Zhong, L, Zhou, X, Zhou, X K, Zhou, X R, Zhou, X Y, Zhou, K, Zhu, K J, Zhu, S, Zhu, S H, Zhu, X L, Zhu, Y C, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, L, Zotti, B S, Zou, and J H, Zou

Abstract

We report the first direct measurement of decays of the Λ_{c}^{+} baryon involving the neutron. The analysis is performed using 567 pb^{-1} of e^{+}e^{-} collision data collected at sqrt[s]=4.599 GeV with the BESIII detector at the BEPCII collider. We observe the decay Λ_{c}^{+}→nK_{S}^{0}π^{+} and measure the absolute branching fraction to be B(Λ_{c}^{+}→nK_{S}^{0}π^{+})=[1.82±0.23(stat)±0.11(syst)]%. A comparison to B[Λ_{c}^{+}→p(K[over ¯]π)^{0}] provides an important test of isospin symmetry and final state interactions.

Published
2016

11. Measurement of Singly Cabibbo Suppressed Decays Λ_{c}^{+}→pπ^{+}π^{-} and Λ_{c}^{+}→pK^{+}K^{-}

Author

M, Ablikim, M N, Achasov, S, Ahmed, X C, Ai, O, Albayrak, M, Albrecht, D J, Ambrose, A, Amoroso, F F, An, Q, An, J Z, Bai, O, Bakina, R, Baldini Ferroli, Y, Ban, D W, Bennett, J V, Bennett, N, Berger, M, Bertani, D, Bettoni, J M, Bian, F, Bianchi, E, Boger, I, Boyko, R A, Briere, H, Cai, X, Cai, O, Cakir, A, Calcaterra, G F, Cao, S A, Cetin, J, Chai, J F, Chang, G, Chelkov, G, Chen, H S, Chen, J C, Chen, M L, Chen, S, Chen, S J, Chen, X, Chen, X R, Chen, Y B, Chen, H P, Cheng, X K, Chu, G, Cibinetto, H L, Dai, J P, Dai, A, Dbeyssi, D, Dedovich, Z Y, Deng, A, Denig, I, Denysenko, M, Destefanis, F, De Mori, Y, Ding, C, Dong, J, Dong, L Y, Dong, M Y, Dong, Z L, Dou, S X, Du, P F, Duan, J Z, Fan, J, Fang, S S, Fang, X, Fang, Y, Fang, R, Farinelli, L, Fava, S, Fegan, F, Feldbauer, G, Felici, C Q, Feng, E, Fioravanti, M, Fritsch, C D, Fu, Q, Gao, X L, Gao, Y, Gao, Z, Gao, I, Garzia, K, Goetzen, L, Gong, W X, Gong, W, Gradl, M, Greco, M H, Gu, Y T, Gu, Y H, Guan, A Q, Guo, L B, Guo, R P, Guo, Y, Guo, Y P, Guo, Z, Haddadi, A, Hafner, S, Han, X Q, Hao, F A, Harris, K L, He, F H, Heinsius, T, Held, Y K, Heng, T, Holtmann, Z L, Hou, C, Hu, H M, Hu, J F, Hu, T, Hu, Y, Hu, G S, Huang, J S, Huang, X T, Huang, X Z, Huang, Y, Huang, Z L, Huang, T, Hussain, W, Ikegami Andersson, Q, Ji, Q P, Ji, X B, Ji, X L, Ji, L W, Jiang, X S, Jiang, X Y, Jiang, J B, Jiao, Z, Jiao, D P, Jin, S, Jin, T, Johansson, A, Julin, N, Kalantar-Nayestanaki, X L, Kang, X S, Kang, M, Kavatsyuk, B C, Ke, P, Kiese, R, Kliemt, B, Kloss, O B, Kolcu, B, Kopf, M, Kornicer, A, Kupsc, W, Kühn, J S, Lange, M, Lara, P, Larin, H, Leithoff, C, Leng, C, Li, Cheng, Li, D M, Li, F, Li, F Y, Li, G, Li, H B, Li, H J, Li, J C, Li, Jin, Li, K, Li, Lei, Li, P L, Li, P R, Li, Q Y, Li, T, Li, W D, Li, W G, Li, X L, Li, X N, Li, X Q, Li, Y B, 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 H, Liu, H M, Liu, J, Liu, J B, Liu, J P, Liu, J Y, Liu, K, Liu, K Y, Liu, L D, Liu, P L, Liu, Q, Liu, S B, Liu, X, Liu, Y B, Liu, Y Y, Liu, Z A, Liu, Zhiqing, Liu, H, Loehner, Y F, Long, X C, Lou, H J, Lu, J G, Lu, Y, Lu, Y P, Lu, C L, Luo, M X, Luo, T, Luo, X L, Luo, X R, Lyu, F C, Ma, H L, Ma, L L, Ma, M M, Ma, Q M, Ma, T, Ma, X N, Ma, X Y, Ma, Y M, Ma, F E, Maas, M, Maggiora, Q A, Malik, Y J, Mao, Z P, Mao, S, Marcello, J G, Messchendorp, G, Mezzadri, J, Min, T J, Min, R E, Mitchell, X H, Mo, Y J, Mo, C, Morales Morales, N Yu, Muchnoi, H, Muramatsu, P, Musiol, Y, Nefedov, F, Nerling, I B, Nikolaev, Z, Ning, S, Nisar, S L, Niu, X Y, Niu, S L, Olsen, Q, Ouyang, S, Pacetti, Y, Pan, P, Patteri, M, Pelizaeus, H P, Peng, K, Peters, J, Pettersson, J L, Ping, R G, Ping, R, Poling, V, Prasad, H R, Qi, M, Qi, S, Qian, C F, Qiao, L Q, Qin, N, Qin, X S, Qin, Z H, Qin, J F, Qiu, K H, Rashid, C F, Redmer, M, Ripka, G, Rong, Ch, Rosner, X D, Ruan, A, Sarantsev, M, Savrié, C, Schnier, K, Schoenning, S, Schumann, W, Shan, M, Shao, C P, Shen, P X, Shen, X Y, Shen, H Y, Sheng, M, Shi, W M, Song, X Y, Song, S, Sosio, S, Spataro, G X, Sun, J F, Sun, S S, Sun, X H, Sun, Y J, Sun, Y Z, Sun, Z J, Sun, Z T, Sun, C J, Tang, X, Tang, I, Tapan, E H, Thorndike, M, Tiemens, I, Uman, G S, Varner, B, Wang, B L, Wang, D, Wang, D Y, Wang, K, Wang, L L, Wang, L S, Wang, M, Wang, P, Wang, P L, Wang, W, Wang, W P, Wang, X F, Wang, Y, Wang, Y D, Wang, Y F, Wang, Y Q, Wang, Z, Wang, Z G, Wang, Z H, Wang, Z Y, Wang, T, Weber, D H, Wei, P, Weidenkaff, S P, Wen, U, Wiedner, M, Wolke, L H, Wu, L J, Wu, Z, Wu, L, Xia, L G, Xia, Y, Xia, D, Xiao, H, Xiao, Z J, Xiao, Y G, Xie, Q L, Xiu, G F, Xu, J J, Xu, L, Xu, Q J, Xu, Q N, Xu, X P, Xu, L, Yan, W B, Yan, W C, Yan, Y H, Yan, H J, Yang, H X, Yang, L, Yang, Y X, Yang, M, Ye, M H, Ye, J H, Yin, Z Y, You, B X, Yu, C X, Yu, J S, Yu, C Z, Yuan, W L, Yuan, Y, Yuan, A, Yuncu, A A, Zafar, A, Zallo, Y, Zeng, Z, Zeng, B X, Zhang, B Y, Zhang, C, Zhang, C C, Zhang, D H, Zhang, H H, Zhang, H Y, Zhang, J, Zhang, J J, Zhang, J L, Zhang, J Q, Zhang, J W, Zhang, J Y, Zhang, J Z, Zhang, K, Zhang, L, Zhang, S Q, Zhang, X Y, Zhang, Y, Zhang, Y H, Zhang, Y N, Zhang, Y T, 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, M G, Zhao, Q, Zhao, Q W, Zhao, S J, Zhao, T C, Zhao, Y B, Zhao, Z G, Zhao, A, Zhemchugov, B, Zheng, J P, Zheng, W J, Zheng, Y H, Zheng, B, Zhong, L, Zhou, X, Zhou, X K, Zhou, X R, Zhou, X Y, Zhou, K, Zhu, K J, Zhu, S, Zhu, S H, Zhu, X L, Zhu, Y C, Zhu, Y S, Zhu, Z A, Zhu, J, Zhuang, L, Zotti, B S, Zou, and J H, Zou

Abstract

Using 567 pb^{-1} of data collected with the BESIII detector at a center-of-mass energy of sqrt[s]=4.599 GeV, near the Λ_{c}^{+}Λ[over ¯]_{c}^{-} threshold, we study the singly Cabibbo-suppressed decays Λ_{c}^{+}→pπ^{+}π^{-} and Λ_{c}^{+}→pK^{+}K^{-}. By normalizing with respect to the Cabibbo-favored decay Λ_{c}^{+}→pK^{-}π^{+}, we obtain ratios of branching fractions: [B(Λ_{c}^{+}→pπ^{+}π^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})]=(6.70±0.48±0.25)%, [B(Λ_{c}^{+}→pϕ)/B(Λ_{c}^{+}→pK^{-}π^{+})]=(1.81±0.33±0.13)%, and [B(Λ_{c}^{+}→pK^{+}K_{non-ϕ}^{-})/B(Λ_{c}^{+}→pK^{-}π^{+})]=(9.36±2.22±0.71)×10^{-3}, where the uncertainties are statistical and systematic, respectively. The absolute branching fractions are also presented. Among these measurements, the decay Λ_{c}^{+}→pπ^{+}π^{-} is observed for the first time, and the precision of the branching fraction for Λ_{c}^{+}→pK^{+}K_{non-ϕ}^{-} and Λ_{c}^{+}→pϕ is significantly improved.

Published
2016

12. Amplitude Analysis of the Decays η^{'}→π^{+}π^{-}π^{0} and η^{'}→π^{0}π^{0}π^{0}

Author

Ablikim, M., Achasov, M. N., X. C., Ai, Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, Antonio, F. F., An, An, Q., Bai, J. Z., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, Fabrizio, Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, H. Y., Chen, J. C., Chen, M. L., Chen, S., Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Cheng, H. P., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, Marco Giovanni Maria, DE MORI, Francesca, Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., S. X., Du, Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, Luciano, Fedorov, O., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., C. D., Fu, Gao, Q., Gao, X. L., Gao, X. Y., Gao, Y., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, Michela, M. H., Gu, Y. T., Gu, Guan, Y. H., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., K. L., He, Held, T., Heng, Y. K., Hou, Z. L., Hu, C., H. M., Hu, Hu, Jifeng, Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Y., Huang, Z. L., Hussain, T., Ji, Q., Q. P., Ji, X. B., Ji, X. L., Ji, Jiang, L. W., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., B. C., Ke, Kiese, P., Kliemt, R., Kloss, B., Kolcu, O. B., Kopf, B., Kornicer, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Leng, C., Li, C., Cheng, Li, D. M., Li, Li, F., F. Y., Li, Li, G., H. B., Li, H. J., Li, J. C., Li, Jin, Li, Li, K., Lei, Li, P. R., Li, Q. Y., Li, Li, T., W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, Y. B., Li, Z. B., Li, Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. H., Liu, H. M., Liu, J., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Z. A., Liu, Zhiqing, Loehner, H., Lou, X. C., H. J., Lu, J. G., Lu, Lu, Y., Y. P., Lu, Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lyu, X. R., F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, Ma, T., X. N., Ma, X. Y., Ma, Y. M., Ma, Maas, F. E., Maggiora, Marco, Mao, Y. J., Mao, Z. P., Marcello, Simonetta, Messchendorp, J. G., Min, J., Min, T. J., Mitchell, R. E., X. H., Mo, Y. J., Mo, Morales Morales, C., Muchnoi, N. Y. u., Muramatsu, H., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., H. R., Qi, Qi, M., Qian, S., Qiao, C. F., Qin, L. Q., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Ripka, M., Rong, G., Rosner, C. h., Ruan, X. D., Sarantsev, A., Savrié, M., Schoenning, K., Schumann, S., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, M., Song, W. M., Song, X. Y., Sosio, Stefano, Spataro, STEFANO GIOVANNI, Sun, G. X., Sun, J. F., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, X., Tapan, I., Thorndike, E. H., Tiemens, M., Ullrich, M., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, W., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Weber, T., Wei, D. H., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., L. H., Wu, L. J., Wu, Wu, Z., Xia, L., Xia, L. G., Xia, Y., Xiao, D., Xiao, H., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., G. F., Xu, J. J., Xu, Xu, L., Q. J., Xu, Q. N., Xu, X. P., Xu, Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y. X., Ye, M., M. H., Ye, Yin, J. H., B. X., Yu, C. X., Yu, J. S., Yu, Yuan, C. Z., Yuan, W. L., Yuan, Y., Yuncu, A., Zafar, A. A., Zallo, A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. Q., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. N., Zhang, Y. T., Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, Q. W., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, Laura, Zou, B. S., and Zou, J. H.

Subjects
Physics and Astronomy (all)
Abstract

Based on a sample of 1.31×10^{9} J/ψ events collected with the BESIII detector, an amplitude analysis of the isospin-violating decays η^{'}→π^{+}π^{-}π^{0} and η^{'}→π^{0}π^{0}π^{0} is performed. A significant P-wave contribution from η^{'}→ρ^{±}π^{∓} is observed for the first time in η^{'}→π^{+}π^{-}π^{0}. The branching fraction is determined to be B(η^{'}→ρ^{±}π^{∓})=(7.44±0.60±1.26±1.84)×10^{-4}, where the first uncertainty is statistical, the second systematic, and the third model dependent. In addition to the nonresonant S-wave component, there is a significant σ meson component. The branching fractions of the combined S-wave components are determined to be B(η^{'}→π^{+}π^{-}π^{0})_{S}=(37.63±0.77±2.22±4.48)×10^{-4} and B(η^{'}→π^{0}π^{0}π^{0})=(35.22±0.82±2.54)×10^{-4}, respectively. The latter one is consistent with previous BESIII measurements.

Published
2016

13. Measurement of the Absolute Branching Fraction for Λ_{c}^{+}→Λe^{+}ν_{e}

Author

Ablikim, M., Achasov, M. N., X. C., Ai, Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., F. F., An, An, Q., Bai, J. Z., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, H. Y., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Cheng, H. P., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., S. X., Du, Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, X., Fang, Y., Fava, L., Fedorov, O., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., C. D., Fu, Gao, Q., Gao, X. L., Gao, X. Y., Gao, Y., Gao, Z., Garzia, I., Goetzen, K., Gong, W. X., Gradl, W., Greco, M., M. H., Gu, Y. T., Gu, Guan, Y. H., Guo, A. Q., Guo, L. B., Guo, Y., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., K. L., He, Held, T., Heng, Y. K., Hou, Z. L., Hu, C., H. M., Hu, J. F., Hu, Hu, T., Hu, Y., Huang, G. M., Huang, G. S., Huang, J. S., Huang, X. T., Huang, Y., Hussain, T., Ji, Q., Q. P., Ji, X. B., Ji, X. L., Ji, Jiang, L. W., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., B. C., Ke, Kiese, P., Kliemt, R., Kloss, B., Kolcu, O. B., Kopf, B., Kornicer, M., Kuehn, W., Kupsc, A., Lange, J. S., Lara, M., Larin, P., Leng, C., Li, C., D. M., Li, Li, F., F. Y., Li, Li, G., H. B., Li, J. C., Li, Li, J., Li, K., Li, L., P. R., Li, Li, T., W. D., Li, W. G., Li, X. L., Li, X. M., Li, X. N., Li, X. Q., Li, Z. B., Li, Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Liu, F., Liu, H. B., Liu, H. H., Liu, H. M., Liu, J., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Z. A., Liu, Z., Lou, X. C., H. J., Lu, J. G., Lu, Lu, Y., Y. P., Lu, Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lyu, X. R., F. C., Ma, H. L., Ma, L. L., Ma, Q. M., Ma, Ma, T., X. N., Ma, X. Y., Ma, Maas, F. E., Maggiora, M., Mao, Y. J., Mao, Z. P., Marcello, S., Messchendorp, J. G., Min, J., Mitchell, R. E., X. H., Mo, Y. J., Mo, Morales Morales, C., Muchnoi, N. Yu., Muramatsu, H., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., H. R., Qi, Qi, M., Qian, S., Qiao, C. F., Qin, L. Q., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Ripka, M., Rong, G., Rosner, Ch., Ruan, X. D., Santoro, V., Sarantsev, A., Savrie, M., Schoenning, K., Schumann, S., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, W. M., Song, X. Y., Sosio, S., Spataro, S., Sun, G. X., Sun, J. F., Sun, S. S., Sun, Y. J., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, X., Tapan, I., Thorndike, E. H., Tiemens, M., Ullrich, M., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, S. G., Wang, W., Wang, W. P., Wang, X. F., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Weber, T., Wei, D. H., Wei, J. B., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., L. H., Wu, Wu, Z., Xia, L., Xia, L. G., Xia, Y., Xiao, D., Xiao, H., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., G. F., Xu, Xu, L., Q. J., Xu, Q. N., Xu, X. P., Xu, Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y., Yang, Y. X., Ye, M., M. H., Ye, Yin, J. H., B. X., Yu, C. X., Yu, J. S., Yu, Yuan, C. Z., Yuan, W. L., Yuan, Y., Yuncu, A., Zafar, A. A., Zallo, A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J. J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. N., Zhang, Y. T., Zhang, Yu., Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, Q. W., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, L., Zou, B. S., and Zou, J. H.

Subjects
Physics and Astronomy (all)
Abstract

We report the first measurement of the absolute branching fraction for Λ_{c}^{+}→Λe^{+}ν_{e}. This measurement is based on 567 pb^{-1} of e^{+}e^{-} annihilation data produced at sqrt[s]=4.599 GeV, which is just above the Λ_{c}^{+}Λ[over ¯]_{c}^{-} threshold. The data were collected with the BESIII detector at the BEPCII storage rings. The branching fraction is determined to be B(Λ_{c}^{+}→Λe^{+}ν_{e})=[3.63±0.38(stat)±0.20(syst)]%, representing a significant improvement in precision over the current indirect determination. As the branching fraction for Λ_{c}^{+}→Λe^{+}ν_{e} is the benchmark for those of other Λ_{c}^{+} semileptonic channels, our result provides a unique test of different theoretical models, which is the most stringent to date.

Published
2015

14. Observation of Z_{c}(3900)^{0} in e^{+}e^{-}→π^{0}π^{0}J/ψ

Author

Ablikim, M., Achasov, M. N., X. C., Ai, Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, Antonio, F. F., An, An, Q., Bai, J. Z., Baldini Ferroli, R., Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, Fabrizio, Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., a G. Chelkov, Chen, G., Chen, H. S., Chen, H. Y., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Cheng, H. P., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, MARCO GIOVANNI, DE MORI, Francesca, Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., S. X., Du, Duan, P. F., Eren, E. E., Fan, J. Z., Fang, J., Fang, S. S., Fang, X., Fang, Y., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., C. D., Fu, Gao, Q., Gao, X. Y., Gao, Y., Gao, Z., Garzia, I., Geng, C., Goetzen, K., Gong, W. X., Gradl, W., Greco, Michela, M. H., Gu, Y. T., Gu, Guan, Y. H., Guo, A. Q., Guo, L. B., Guo, Y., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Han, Y. L., Hao, X. Q., Harris, F. A., K. L., He, Z. Y., He, Held, T., Heng, Y. K., Hou, Z. L., Hu, C., H. M., Hu, J. F., Hu, Hu, T., Hu, Y., Huang, G. M., Huang, G. S., Huang, H. P., Huang, J. S., Huang, X. T., Huang, Y., Hussain, T., Ji, Q., Q. P., Ji, X. B., Ji, X. L., Ji, Jiang, L. L., Jiang, L. W., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., B. C., Ke, Kiese, P., Kliemt, R., Kloss, B., Kolcu, O. B., Kopf, B., Kornicer, M., Kühn, W., Kupsc, A., Lange, J. S., Lara, M., Larin, P., Leng, C., Li, C., C. H., Li, Cheng, Li, D. M., Li, Li, F., a G. Li, H. B., Li, J. C., Li, Jin, Li, Li, K., Lei, Li, P. R., Li, Li, T., W. D., Li, W. G., Li, X. L., Li, X. M., Li, X. N., Li, X. Q., Li, Z. B., Li, Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B. J., Liu, C. X., Liu, F. H., Fang, Liu, Feng, Liu, Liu, H. B., Liu, H. H., Liu, 6 H. H., Liu, H. M., Liu, J., Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, X. X., Liu, Y. B., Liu, Z. A., Zhiqiang, Liu, Zhiqing, Liu, Loehner, H., Lou, X. C., H. J., Lu, J. G., Lu, R. Q., Lu, Lu, Y., Y. P., Lu, Luo, C. L., Luo, M. X., Luo, T., Luo, X. L., Lv, M., Lyu, X. R., F. C., Ma, H. L., Ma, L. L., Ma, Q. M., Ma, Ma, T., X. N., Ma, X. Y., Ma, Maas, F. E., Maggiora, Marco, Mao, Y. J., Mao, Z. P., Marcello, Simonetta, Messchendorp, J. G., Min, J., Min, T. J., Mitchell, R. E., X. H., Mo, Y. J., Mo, Morales Morales, C., Moriya, K., Muchnoi, N. Y. u., Muramatsu, H., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Poling, R., Prasad, V., Y. N., Pu, Qi, M., Qian, S., Qiao, C. F., Qin, L. Q., Qin, N., Qin, X. S., Qin, Y., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Ren, H. L., Ripka, M., Rong, G., Rosner, C. h., Ruan, X. D., Santoro, V., Sarantsev, A., Savrié, g. M., Schoenning, K., Schumann, S., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, W. M., Song, X. Y., Sosio, Stefano, Spataro, STEFANO GIOVANNI, Sun, G. X., Sun, J. F., Sun, S. S., Sun, Y. J., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, 9 C. J., Tang, X., Tapan, I., Thorndike, E. H., Tiemens, M., Ullrich, 5 M., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, P., Wang, P. L., Wang, S. G., Wang, W., Wang, X. F., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. H., Wang, Z. Y., Weber, T., Wei, D. H., Wei, J. B., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., L. H., Wu, Wu, Z., Xia, L. G., Xia, Y., Xiao, D., Xiao, Z. J., Xie, Y. G., Xiu, Q. L., G. F., Xu, Xu, L., Q. J., Xu, Q. N., Xu, X. P., Xu, Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y., Yang, Y. X., Ye, H., Ye, M., M. H., Ye, Yin, J. H., B. X., Yu, C. X., Yu, H. W., Yu, J. S., Yu, Yuan, C. Z., Yuan, W. L., Yuan, Y., Yuncu, A., Zafar, A. A., Zallo, A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J. J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. H., Zhang, X. Y., Zhang, Y., Zhang, Y. N., Zhang, Y. H., a Y. T. Zhang, Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Lei, Zhao, Ling, Zhao, Zhao, M. G., Zhao, Q., Zhao, Q. W., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, W. J., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, Li, Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhu, K., Zhu, K. J., Zhu, S., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zotti, L., Zou, B. S., and Zou, J. H.

Subjects
Physics and Astronomy (all), decays, NO
Abstract

Using a data sample collected with the BESIII detector operating at the BEPCII storage ring, we observe a new neutral state Z_{c}(3900)^{0} with a significance of 10.4σ. The mass and width are measured to be 3894.8±2.3±3.2 MeV/c^{2} and 29.6±8.2±8.2 MeV, respectively, where the first error is statistical and the second systematic. The Born cross section for e^{+}e^{-}→π^{0}π^{0}J/ψ and the fraction of it attributable to π^{0}Z_{c}(3900)^{0}→π^{0}π^{0}J/ψ in the range E_{c.m.}=4.19-4.42 GeV are also determined. We interpret this state as the neutral partner of the four-quark candidate Z_{c}(3900)^{±}.

Published
2015

15. Observation of e(+)e(-)→π(0)π(0)hc and a neutral charmoniumlike structure Zc(4020)(0)

Author

Ablikim, M, Achasov, M. N, X. C, Ai, Albayrak, O, Albrecht, M, Ambrose, D. J, Amoroso, A, F. F, An, An, Q, Bai, J. Z, Baldini Ferroli, R, Ban, Y, Bennett, D. W, Bennett, J. V, Bertani, M, Bettoni, D, Bian, J. M, Bianchi, F, Boger, E, Bondarenko, O, Boyko, I, Briere, R. A, Cai, H, Cai, X, Cakir, O, Calcaterra, A, Cao, G. F, Cetin, S. A, Chang, J. F, Chelkov, G, Chen, G, Chen, H. S, Chen, H. Y, Chen, J. C, Chen, M. L, Chen, S. J, Chen, X, Chen, X. R, Chen, Y. B, Cheng, H. P, Chu, X. K, Chu, Y. P, Cibinetto, G, Cronin Hennessy, D, Dai, H. L, Dai, J. P, Dedovich, D, Deng, Z. Y, Denig, A, Denysenko, I, Destefanis, M, De Mori, F, Ding, Y, Dong, C, Dong, J, Dong, L. Y, Dong, M. Y, S. X, Du, Duan, P. F, Fan, J. Z, Fang, J, Fang, S. S, Fang, X, Fang, Y, Fava, L, Feldbauer, F, Felici, G, Feng, C. Q, Fioravanti, E, C. D, Fu, Gao, Q, Gao, Y, Garzia, I, Goetzen, K, Gong, W. X, Gradl, W, Greco, M, M. H, Gu, Y. T, Gu, Guan, Y. H, Guo, A. Q, Guo, L. B, Guo, T, Guo, Y, Guo, Y. P, Haddadi, Z, Hafner, A, Han, S, Han, Y. L, Harris, F. A, K. L, He, Z. Y, He, Held, T, Heng, Y. K, Hou, Z. L, Hu, C, H. M, Hu, J. F, Hu, Hu, T, Hu, Y, Huang, G. M, Huang, G. S, Huang, H. P, Huang, J. S, Huang, X. T, Huang, Y, Hussain, T, Ji, Q, Q. P, Ji, X. B, Ji, X. L, Ji, Jiang, L. L, Jiang, L. W, Jiang, X. S, Jiao, J. B, Jiao, Z, Jin, D. P, Jin, S, Johansson, T, Julin, A, Kalantar Nayestanaki, N, Kang, X. L, Kang, X. S, Kavatsyuk, M, B. C, Ke, Kliemt, R, Kloss, B, Kolcu, O. B, Kopf, B, Kornicer, M, Kuehn, W, Kupsc, A, Lai, W, Lange, J. S, Lara, M, Larin, P, Leyhe, M, Cheng, Li, D. M, Li, Li, F, Li, G, H. B, Li, J. C, Li, Jin, Li, Li, K, Q. J, Li, Li, T, W. D, Li, W. G, Li, X. L, Li, X. M, Li, X. N, Li, X. Q, Li, Z. B, Li, Liang, H, Liang, Y. F, Liang, Y. T, Liao, G. R, Lin, D. X, Liu, B. J, Liu, C. L, Liu, C. X, Liu, F. H, Liu, Fang, Liu, Feng, Liu, H. B, Liu, H. H, Liu, H. M, Liu, J, Liu, J. P, Liu, J. Y, Liu, K, Liu, K. Y, Liu, L. D, Liu, Q, Liu, S. B, Liu, X, Liu, X. X, Liu, Y. B, Liu, Z. A, Liu, Zhiqiang, Liu, Zhiqing, Loehner, H, Lou, X. C, H. J, Lu, J. G, Lu, R. Q, Lu, Lu, Y, Y. P, Lu, Luo, C. L, Luo, M. X, Luo, T, Luo, X. L, Lv, M, Lyu, X. R, F. C, Ma, H. L, Ma, Q. M, Ma, Ma, S, Ma, T, X. N, Ma, X. Y, Ma, Maas, F. E, Maggiora, M, Malik, Q. A, Mao, Y. J, Mao, Z. P, Marcello, S, Messchendorp, J. G, Min, J, Min, T. J, Mitchell, R. E, X. H, Mo, Y. J, Mo, Moeini, H, Morales Morales, C, Moriya, K, Muchnoi, N. Yu, Muramatsu, H, Nefedov, Y, Nerling, F, Nikolaev, I. B, Ning, Z, Nisar, S, Niu, S. L, Niu, X. Y, Olsen, S. L, Ouyang, Q, Pacetti, Simone, Patteri, P, Pelizaeus, M, Peng, H. P, Peters, K, Ping, J. L, Ping, R. G, Poling, R, Y. N, Pu, Qi, M, Qian, S, Qiao, C. F, Qin, L. Q, Qin, N, Qin, X. S, Qin, Y, Qin, Z. H, Qiu, J. F, Rashid, K. H, Redmer, C. F, Ren, H. L, Ripka, M, Rong, G, Ruan, X. D, Santoro, V, Sarantsev, A, Savrié, M, Schoenning, K, Schumann, S, Shan, W, Shao, M, Shen, C. P, Shen, P. X, Shen, X. Y, Sheng, H. Y, Shepherd, M. R, Song, W. M, Song, X. Y, Sosio, S, Spataro, S, Spruck, B, Sun, G. X, Sun, J. F, Sun, S. S, Sun, Y. J, Sun, Y. Z, Sun, Z. J, Sun, Z. T, Tang, C. J, Tang, X, Tapan, I, Thorndike, E. H, Tiemens, M, Toth, D, Ullrich, M, Uman, I, Varner, G. S, Wang, B, Wang, B. L, Wang, D, Wang, D. Y, Wang, K, Wang, L. L, Wang, L. S, Wang, M, Wang, P, Wang, P. L, Wang, Q. J, Wang, S. G, Wang, W, Wang, X. F, Wang, Y. D, Wang, Y. F, Wang, Y. Q, Wang, Z, Wang, Z. G, Wang, Z. H, Wang, Z. Y, Wei, D. H, Wei, J. B, Weidenkaff, P, Wen, S. P, Wiedner, U, Wolke, M, L. H, Wu, Wu, Z, Xia, L. G, Xia, Y, Xiao, D, Xiao, Z. J, Xie, Y. G, Xiu, Q. L, G. F, Xu, Xu, L, Q. J, Xu, Q. N, Xu, X. P, Xu, Xue, Z, Yan, L, Yan, W. B, Yan, W. C, Yan, Y. H, Yang, H. X, Yang, L, Yang, Y, Yang, Y. X, Ye, H, Ye, M, M. H, Ye, Yin, J. H, B. X, Yu, C. X, Yu, H. W, Yu, J. S, Yu, Yuan, C. Z, Yuan, W. L, Yuan, Y, Yuncu, A, Zafar, A. A, Zallo, A, Zeng, Y, Zhang, B. X, Zhang, B. Y, Zhang, C, Zhang, C. C, Zhang, D. H, Zhang, H. H, Zhang, H. T, Zhang, H. Y, Zhang, J. J, Zhang, J. L, Zhang, J. Q, Zhang, J. W, Zhang, J. Y, Zhang, J. Z, Zhang, K, Zhang, L, Zhang, S. H, Zhang, X. J, Zhang, X. Y, Zhang, Y, Zhang, Y. H, Zhang, Z. H, Zhang, Z. P, Zhang, Z. Y, Zhao, G, Zhao, J. W, Zhao, J. Y, Zhao, J. Z, Zhao, Lei, Zhao, Ling, Zhao, M. G, Zhao, Q, Zhao, Q. W, Zhao, S. J, Zhao, T. C, Zhao, Y. B, Zhao, Z. G, Zhemchugov, A, Zheng, B, Zheng, J. P, Zheng, Y. H, Zhong, B, Zhou, L, Zhou, Li, Zhou, X, Zhou, X. K, Zhou, X. R, Zhou, X. Y, Zhu, K, Zhu, K. J, Zhu, S, Zhu, X. L, Zhu, Y. C, Zhu, Y. S, Zhu, Z. A, Zhuang, J, Zou, B. S, Zou, J. H., İstanbul Arel Üniversitesi, and [Chen, H. Y. -- Fang, S. S. -- Heng, Y. K. -- Hou, Z. L. -- Hu, H. M. -- Hu, T. -- Ji, Q. -- Ji, X. B. -- Ji, X. L. -- Jiang, L. L. -- Jiang, X. S. -- Jin, D. P. -- Jin, S. -- Kang, X. L. -- Kang, X. S. -- Lai, W. -- Li, F. -- Li, G. -- Li, H. B. -- Li, J. C. -- Li, Q. J. -- Li, W. D. -- Li, W. G. -- Li, X. N. -- Liang, Y. F. -- Liu, B. J. -- Liu, C. X. -- Liu, Fang -- Liu, H. 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B.] Novosibirsk State Univ, Novosibirsk 630090, Russia -- [Chelkov, G. -- Zhemchugov, A.] Moscow Inst Phys & Technol, Moscow 141700, Russia -- [Chelkov, G.] Tomsk State Univ, Russia & Funct Elect Lab, Tomsk 634050, Russia -- [Lou, X. C.] Univ Texas Dallas, Richardson, TX 75083 USA -- [Sarantsev, A.] PNPI, Gatchina 188300, Russia -- [Yuncu, A.] Bogazici Univ, TR-34342 Istanbul, Turkey -- [Kolcu, O. B.] Istanbul Arel Univ, Istanbul, Turkey

Abstract

WOS: 000345356900003, PubMed ID: 25479489, Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider at center-of-mass energies of root s = 4.23, 4.26, and 4.36 GeV, we observe e(+)e(-) -> pi(0)pi(0)h(c) for the first time. The Born cross sections are measured and found to be about half of those of e(+)e(-) -> pi(+)pi(-)h(c) within less than 2 sigma. In the pi(0)h(c) mass spectrum, a structure at 4.02 GeV/c(2) is found. It is most likely to be the neutral isospin partner of the Z(c)(4020)(+/-) observed in the process of e(+)e(-) -> pi(+)pi(-)h(c) being found. A fit to the pi(0)h(c) invariant mass spectrum, with the width of the Z(c)(4020)(0) fixed to that of its charged isospin partner and possible interferences with non-Z(c)(4020)(0) amplitudes neglected, gives a mass of (4023.9 +/- 2.2 +/- 3.8) MeV/c(2) for the Z(c)(4020)(0), where the first error is statistical and the second systematic., National Key Basic Research Program of China [2015CB856700]; Joint Funds of the National Natural Science Foundation of China [11079008, 11179007, U1232201, U1332201]; National Natural Science Foundation of China (NSFC) [10935007, 11121092, 11125525, 11235011, 11079023, 11322544, 11335008]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS [KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; German Research Foundation DFG [Collaborative Research Center CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; Joint Funds of the National Natural Science Foundation of China under Contracts No. 11079008, No. 11179007, No. U1232201, No. U1332201; National Natural Science Foundation of China (NSFC) under Contracts No. 10935007, No. 11121092, No. 11125525, No. 11235011, No. 11079023, No. 11322544, No. 11335008; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45; 100 Talents Program of CAS; German Research Foundation DFG under Contract No. Collaborative Research Center CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; U.S. Department of Energy under Contracts No. DE-FG02-04ER41291, No. DE-FG02-05ER41374, No. DE-FG02-94ER40823, No. DESC0010118; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2014

16. Observation ofη′→π+π−π+π−andη′→π+π−π0π0

Author

M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, S. Braun, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, J. Z. Fan, J. Fang, S. S. Fang, Y. Fang, L. Fava, C. Q. Feng, C. D. Fu, O. Fuks, Q. Gao, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, T. Guo, Y. P. Guo, Y. L. Han, F. A. Harris, K. L. He, M. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, G. M. Huang, G. S. Huang, H. P. Huang, J. S. Huang, L. Huang, X. T. Huang, Y. Huang, T. Hussain, C. S. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, L. W. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. Kloss, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, W. Lai, J. S. Lange, M. Lara, P. Larin, M. Leyhe, C. H. Li, Cheng Li, Cui Li, D. Li, D. M. Li, F. Li, G. Li, H. B. Li, H. J. Li, J. C. Li, K. Li, Lei Li, P. R. Li, Q. J. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, D. X. Lin, B. J. Liu, C. L. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. M. Liu, J. Liu, J. P. Liu, K. Liu, K. Y. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, G. R. Lu, H. J. Lu, H. L. Lu, J. G. Lu, X. R. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, F. C. Ma, H. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, H. Moeini, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, I. B. Nikolaev, Z. Ning, S. Nisar, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, R. Poling, N. Q., M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, X. D. Ruan, A. Sarantsev, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, W. M. Song, X. Y. Song, S. Spataro, B. Spruck, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, Q. J. Wang, S. G. Wang, W. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, M. Werner, U. Wiedner, M. Wolke, L. H. Wu, N. Wu, Z. Wu, L. G. Xia, Y. Xia, D. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, Z. Xue, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, S. P. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. A. Zafar, A. Zallo, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. B. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, S. H. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, and J. H. Zou

Subjects
Physics, Crystallography, Chiral perturbation theory, General Physics and Astronomy
Abstract

Using a sample of $1.3\ifmmode\times\else\texttimes\fi{}{10}^{9}\text{ }\text{ }J/\ensuremath{\psi}$ events collected with the BESIII detector, we report the first observation of ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and ${\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0}$. The measured branching fractions are $\mathcal{B}({\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}})=[8.53\ifmmode\pm\else\textpm\fi{}0.69(\text{stat.})\ifmmode\pm\else\textpm\fi{}0.64(\text{syst.})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}5}$ and $\mathcal{B}({\ensuremath{\eta}}^{\ensuremath{'}}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}{\ensuremath{\pi}}^{0}{\ensuremath{\pi}}^{0})=[1.82\ifmmode\pm\else\textpm\fi{}0.35(\text{stat.})\ifmmode\pm\else\textpm\fi{}\phantom{\rule{0ex}{0ex}}0.18(\text{syst.})]\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}4}$, which are consistent with theoretical predictions based on a combination of chiral perturbation theory and vector-meson dominance.

Published
2014
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17. Observation of η'→π+ π π+ π- and η'→π+π- π0 π0

Author

Ablikim, M., Achasov, M. . N., X. . C., Ai, Albayrak, O., Albrecht, M., Ambrose, D. . J., F. . F., An, An, Q., Bai, J. . Z., Baldini Ferroli, R., Ban, Y., Bennett, J. . V., Bertani, M., Bian, J. . M., Boger, E., Bondarenko, O., Boyko, I., Braun, S., Briere, R. . A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. . F., Cetin, S. . A., Chang, J. . F., Chelkov, G., Chen, G., Chen, H. . S., Chen, J. . C., Chen, M. . L., Chen, S. . J., Chen, X., Chen, X. . R., Chen, Y. . B., Cheng, H. . P., Chu, X. . K., Chu, Y. . P., Cronin Hennessy, D., Dai, H. . L., Dai, J. . P., Dedovich, D., Deng, Z. . Y., Denig, A., Denysenko, I., Destefanis, MARCO GIOVANNI, Ding, W. . M., Ding, Y., Dong, C., Dong, J., Dong, L. . Y., Dong, M. . Y., S. . X., Du, Fan, J. . Z., Fang, J., Fang, S. . S., Fang, Y., Fava, L., Feng, C. . Q., C. . D., Fu, Fuks, O., Gao, Q., Gao, Y., Geng, C., Goetzen, K., Gong, W. . X., Gradl, W., Greco, Michela, M. . H., Gu, Y. . T., Gu, Guan, Y. . H., Guo, A. . Q., Guo, L. . B., Guo, T., Guo, Y. . P., Han, Y. . L., Harris, F. . A., K. . L., He, He, M., Z. . Y., He, Held, T., Heng, Y. . K., Hou, Z. . L., Hu, C., H. . M., Hu, Hu, Jifeng, Hu, T., Huang, G. . M., Huang, G. . S., Huang, H. . P., Huang, J. . S., Huang, L., Huang, X. . T., Huang, Y., Hussain, T., C. . S., Ji, Ji, Q., Q. . P., Ji, X. . B., Ji, X. . L., Ji, Jiang, L. . L., Jiang, L. . W., Jiang, X. . S., Jiao, J. . B., Jiao, Z., Jin, D. . P., Jin, S., Johansson, T., Kalantar Nayestanaki, N., Kang, X. . L., Kang, X. . S., Kavatsyuk, M., Kloss, B., Kopf, B., Kornicer, M., Kuehn, W., Kupsc, A., Lai, W., Lange, J. . S., Lara, M., Larin, P., Leyhe, M., C. . H., Li, Cheng, Li, Cui, Li, Li, D., D. . M., Li, Li, F., Li, G., H. . B., Li, H. . J., Li, J. . C., Li, Li, K., Lei, Li, P. . R., Li, Q. . J., Li, Li, T., W. . D., Li, W. . G., Li, X. . L., Li, X. . N., Li, X. . Q., Li, Z. . B., Li, Liang, H., Liang, Y. . F., Liang, Y. . T., Lin, D. . X., Liu, B. . J., Liu, C. . L., Liu, C. . X., Liu, F. . H., Fang, Liu, Feng, Liu, Liu, H. . B., Liu, H. . H., Liu, H. . M., Liu, J., Liu, J. . P., Liu, K., Liu, K. . Y., Liu, P. . L., Liu, Q., Liu, S. . B., Liu, X., Liu, Y. . B., Liu, Z. . A., Zhiqiang, Liu, Zhiqing, Liu, Loehner, H., Lou, X. . C., G. . R., Lu, H. . J., Lu, H. . L., Lu, J. . G., Lu, X. . R., Lu, Lu, Y., Y. . P., Lu, Luo, C. . L., Luo, M. . X., Luo, T., Luo, X. . L., Lv, M., F. . C., Ma, H. . L., Ma, Q. . M., Ma, Ma, S., Ma, T., X. . Y., Ma, Maas, F. . E., Maggiora, Marco, Malik, Q. . A., Mao, Y. . J., Mao, Z. . P., Messchendorp, J. . G., Min, J., Min, T. . J., Mitchell, R. . E., X. . H., Mo, Y. . J., Mo, Moeini, H., Morales Morales, C., Moriya, K., Muchnoi, N. . Y. u., Muramatsu, H., Nefedov, Y., Nikolaev, I. . B., Ning, Z., Nisar, S., Niu, X. . Y., Olsen, S. . L., Ouyang, Q., Pacetti, S., Pelizaeus, M., Peng, H. . P., Peters, K., Ping, J. . L., Ping, R. . G., Poling, R., N. Q., Qi, M., Qian, S., Qiao, C. . F., Qin, L. . Q., Qin, X. . S., Qin, Y., Qin, Z. . H., Qiu, J. . F., Rashid, K. . H., Redmer, C. . F., Ripka, M., Rong, G., Ruan, X. . D., Sarantsev, A., Schoenning, K., Schumann, S., Shan, W., Shao, M., Shen, C. . P., Shen, X. . Y., Sheng, H. . Y., Shepherd, M. . R., Song, W. . M., Song, X. . Y., Spataro, STEFANO GIOVANNI, Spruck, B., Sun, G. . X., Sun, J. . F., Sun, S. . S., Sun, Y. . J., Sun, Y. . Z., Sun, Z. . J., Sun, Z. . T., Tang, C. . J., Tang, X., Tapan, I., Thorndike, E. . H., Toth, D., Ullrich, M., Uman, I., Varner, G. . S., Wang, B., Wang, D., Wang, D. . Y., Wang, K., Wang, L. . L., Wang, L. . S., Wang, M., Wang, P., Wang, P. . L., Wang, Q. . J., Wang, S. . G., Wang, W., Wang, X. . F., Wang, Y. . D., Wang, Y. . F., Wang, Y. . Q., Wang, Z., Wang, Z. . G., Wang, Z. . H., Wang, Z. . Y., Wei, D. . H., Wei, J. . B., Weidenkaff, P., Wen, S. . P., Werner, M., Wiedner, U., Wolke, M., L. . H., Wu, Wu, N., Wu, Z., Xia, L. . G., Xia, Y., Xiao, D., Xiao, Z. . J., Xie, Y. . G., Xiu, Q. . L., G. . F., Xu, Xu, L., Q. . J., Xu, Q. . N., Xu, X. . P., Xu, Xue, Z., Yan, L., Yan, W. . B., Yan, W. . C., Yan, Y. . H., Yang, H. . X., Yang, L., Yang, Y., Yang, Y. . X., Ye, H., Ye, M., M. . H., Ye, B. . X., Yu, C. . X., Yu, H. . W., Yu, J. . S., Yu, S. . P., Yu, Yuan, C. . Z., Yuan, W. . L., Yuan, Y., Zafar, A. . A., Zallo, A., Zang, S. . L., Zeng, Y., Zhang, B. . X., Zhang, B. . Y., Zhang, C., Zhang, C. . B., Zhang, C. . C., Zhang, D. . H., Zhang, H. . H., Zhang, H. . Y., Zhang, J. . J., Zhang, J. . Q., Zhang, J. . W., Zhang, J. . Y., Zhang, J. . Z., Zhang, S. . H., Zhang, X. . J., Zhang, X. . Y., Zhang, Y., Zhang, Y. . H., Zhang, Z. . H., Zhang, Z. . P., Zhang, Z. . Y., Zhao, G., Zhao, J. . W., Lei, Zhao, Ling, Zhao, Zhao, M. . G., Zhao, Q., Zhao, Q. . W., Zhao, S. . J., Zhao, T. . C., Zhao, X. . H., Zhao, Y. . B., Zhao, Z. . G., Zhemchugov, A., Zheng, B., Zheng, J. . P., Zheng, Y. . H., Zhong, B., Zhou, L., Zhou, Li, Zhou, X., Zhou, X. . K., Zhou, X. . R., Zhou, X. . Y., Zhu, K., Zhu, K. . J., Zhu, X. . L., Zhu, Y. . C., Zhu, Y. . S., Zhu, Z. . A., Zhuang, J., Zou, B. . S., and Zou, J. . H.

Abstract

Using a sample of 1.3 × 10(9) J/ψ events collected with the BESIII detector, we report the first observation of η(')→π(+)π(-)π(+)π(-) and η(')→π(+)π(-)π(0)π(0). The measured branching fractions are B(η(')→π(+)π(-)π(+)π(-)) = [8.53 ± 0.69(stat.) ± 0.64(syst.)]×10(-5) and B(η(')→π(+)π(-)π(0) π(0)) = [1.82 ± 0.35(stat.) ± 0.18(syst.)] × 10(-4), which are consistent with theoretical predictions based on a combination of chiral perturbation theory and vector-meson dominance.

Published
2014

18. Observation of a charged (DD*bar)- mass peak in e+e- --> pi+ (DD*bar)- at Ecm=4.26 GeV

Author

Ablikim, M., Achasov, M. . N., Albayrak, O., Ambrose, D. . J., F. . F., An, An, Q., Bai, J. . Z., Baldini Ferroli, R., Ban, Y., Becker, J., Bennett, J. . V., Bertani, M., Bian, J. . M., Boger, E., Bondarenko, O., Boyko, I., Braun, S., Briere, R. . A., Bytev, V., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. . F., Cetin, S. . A., Chang, J. . F., Chelkov, G., Chen, G., Chen, H. . S., Chen, J. . C., Chen, M. . L., Chen, S. . J., Chen, X. . R., Chen, Y. . B., Cheng, H. . P., Chu, X. . K., Chu, Y. . P., Cronin Hennessy, D., Dai, H. . L., Dai, J. . P., Dedovich, D., Deng, Z. . Y., Denig, A., Denysenko, I., Destefanis, M., Ding, W. . M., Ding, Y., Dong, L. . Y., Dong, M. . Y., S. . X., Du, Fang, J., Fang, S. . S., Fava, L., Feng, C. . Q., Friedel, P., C. . D., Fu, J. . L., Fu, Fuks, O., Gao, Y., Geng, C., Goetzen, K., Gong, W. . X., Gradl, W., Greco, M., M. . H., Gu, Y. . T., Gu, Guan, Y. . H., Guo, A. . Q., Guo, L. . B., Guo, T., Guo, Y. . P., Han, Y. . L., Harris, F. . A., K. . L., He, He, M., Z. . Y., He, Held, T., Heng, Y. . K., Hou, Z. . L., Hu, C., H. . M., Hu, J. . F., Hu, Hu, T., Huang, G. . M., Huang, G. . S., Huang, J. . S., Huang, L., Huang, X. . T., Huang, Y., Hussain, T., C. . S., Ji, Ji, Q., Q. . P., Ji, X. . B., Ji, X. . L., Ji, Jiang, L. . L., Jiang, X. . S., Jiao, J. . B., Jiao, Z., Jin, D. . P., Jin, S., Jing, F. . F., Kalantar Nayestanaki, N., Kavatsyuk, M., Kloss, B., Kopf, B., Kornicer, M., Kuehn, W., Lai, W., Lange, J. . S., Lara, M., Larin, P., Leyhe, M., C. . H., Li, Cheng, Li, Cui, Li, D. . L., Li, D. . M., Li, Li, F., Li, G., H. . B., Li, J. . C., Li, Li, K., Lei, Li, Li, N., P. . R., Li, Q. . J., Li, W. . D., Li, W. . G., Li, X. . L., Li, X. . N., Li, X. . Q., Li, X. . R., Li, Z. . B., Li, Liang, H., Liang, Y. . F., Liang, Y. . T., Liao, G. . R., Lin, D. X., Liu, B. . J., Liu, C. . L., Liu, C. . X., Liu, F. . H., Fang, Liu, Feng, Liu, Liu, H. . B., Liu, H. . H., Liu, H. . M., Liu, J. . P., Liu, K., Liu, K. . Y., Liu, P. . L., Liu, Q., Liu, S. . B., Liu, X., Liu, Y. . B., Liu, Z. . A., Zhiqiang, Liu, Zhiqing, Liu, Loehner, H., Lou, X. . C., G. . R., Lu, H. . J., Lu, J. . G., Lu, X. . R., Lu, Y. . P., Lu, Luo, C. . L., Luo, M. . X., Luo, T., Luo, X. . L., Lv, M., F. . C., Ma, H. . L., Ma, Q. . M., Ma, Ma, S., Ma, T., X. . Y., Ma, Maas, F. . E., Maggiora, M., Malik, Q. . A., Mao, Y. . J., Mao, Z. . P., Messchendorp, J. . G., Min, J., Min, T. . J., Mitchell, R. . E., X. . H., Mo, Moeini, H., Moralesmorales, C., Moriya, K., Muchnoi, N. . Y. u., Muramatsu, H., Nefedov, Y., Nikolaev, I. . B., Ning, Z., Nisar, S., Olsen, S. . L., Ouyang, Q., Pacetti, Simone, Park, J. . W., Pelizaeus, M., Peng, H. . P., Peters, K., Ping, J. . L., Ping, R. . G., Poling, R., Prencipe, E., Qi, M., Qian, S., Qiao, C. . F., Qin, L. . Q., Qin, X. . S., Qin, Y., Qin, Z. . H., Qiu, J. . F., Rashid, K. . H., Redmer, C. . F., Ripka, M., Rong, G., Ruan, X. . D., Sarantsev, A., Schumann, S., Shan, W., Shao, M., Shen, C. . P., Shen, X. . Y., Sheng, H. . Y., Shepherd, M. . R., Song, W. . M., Song, X. . Y., Spataro, S., Spruck, B., Sun, G. . X., Sun, J. . F., Sun, S. . S., Sun, Y. . J., Sun, Y. . Z., Sun, Z. . J., Sun, Z. . T., Tang, C. . J., Tang, X., Tapan, I., Thorndike, E. . H., Toth, D., Ullrich, M., Uman, I., Varner, G. . S., Wang, B., Wang, D., Wang, D. . Y., Wang, K., Wang, L. . L., Wang, L. . S., Wang, M., Wang, P., Wang, P. . L., Wang, Q. . J., Wang, S. . G., Wang, X. . F., Wang, X. . L., Wang, Y. . D., Wang, Y. . F., Wang, Y. . Q., Wang, Z., Wang, Z. . G., Wang, Z. . H., Wang, Z. . Y., Wei, D. . H., Wei, J. . B., Weidenkaff, P., Wen, Q. . G., Wen, S. . P., Werner, M., Wiedner, U., L. . H., Wu, Wu, N., S. . X., Wu, Wu, W., Wu, Z., Xia, L. . G., Xia, Y. . X., Xiao, Z. . J., Xie, Y. . G., Xiu, Q. . L., G. . F., Xu, Q. . J., Xu, Q. . N., Xu, X. . P., Xu, Xue, Z., Yan, L., Yan, W. . B., Yan, W. . C., Yan, Y. . H., Yang, H. . X., Yang, Y., Yang, Y. . X., Yang, Y. . Z., Ye, H., Ye, M., M. . H., Ye, B. . X., Yu, C. . X., Yu, H. . W., Yu, J. . S., Yu, S. . P., Yu, Yuan, C. . Z., Yuan, W. . L., Yuan, Y., Zafar, A. . A., Zallo, A., Zang, S. . L., Zeng, Y., Zhang, B. . X., Zhang, B. . Y., Zhang, C., Zhang, C. . B., Zhang, C. . C., Zhang, D. . H., Zhang, H. . H., Zhang, H. . Y., Zhang, J. . L., Zhang, J. . Q., Zhang, J. . W., Zhang, J. . Y., Zhang, J. . Z., Lili, Zhang, Zhang, S. . H., Zhang, X. . J., Zhang, X. . Y., Zhang, Y., Zhang, Y. . H., Zhang, Z. . P., Zhang, Z. . Y., Zhenghao, Zhang, Zhao, G., Zhao, J. . W., Lei, Zhao, Ling, Zhao, Zhao, M. . G., Zhao, Q., Zhao, S. . J., Zhao, T. . C., Zhao, X. . H., Zhao, Y. . B., Zhao, Z. . G., Zhemchugov, A., Zheng, B., Zheng, J. . P., Zheng, Y. . H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. . K., Zhou, X. . R., Zhu, K., Zhu, K. . J., Zhu, X. . L., Zhu, Y. . C., Zhu, Y. . S., Zhu, Z. . A., Zhuang, J., Zou, B. . S., and Zou, J. . H.

Published
2014

19. Observation of the decayψ(3686)→ΛΣ¯±π∓+c.c

Author

M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, S. Braun, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, J. Fang, S. S. Fang, Y. Fang, L. Fava, C. Q. Feng, C. D. Fu, J. L. Fu, O. Fuks, Q. Gao, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, T. Guo, Y. P. Guo, Y. L. Han, F. A. Harris, K. L. He, M. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, G. M. Huang, G. S. Huang, J. S. Huang, L. Huang, X. T. Huang, T. Hussain, C. S. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, F. F. Jing, T. Johansson, N. Kalantar-Nayestanaki, X. L. Kang, M. Kavatsyuk, B. Kloss, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, W. Lai, J. S. Lange, M. Lara, P. Larin, M. Leyhe, C. H. Li, Cheng Li, Cui Li, D. Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, K. Li, Lei Li, P. R. Li, Q. J. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, X. R. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin, B. J. Liu, C. L. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. M. Liu, J. Liu, J. P. Liu, K. Liu, K. Y. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, G. R. Lu, H. J. Lu, H. L. Lu, J. G. Lu, X. R. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, F. C. Ma, H. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, H. Moeini, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, Y. Nefedov, I. B. Nikolaev, Z. Ning, S. Nisar, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, R. Poling, E. Prencipe, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, X. D. Ruan, A. Sarantsev, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, W. M. Song, X. Y. Song, S. Spataro, B. Spruck, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, Q. J. Wang, S. G. Wang, W. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, M. Werner, U. Wiedner, M. Wolke, G. G. Wu, L. H. Wu, N. Wu, W. Wu, Z. Wu, L. G. Xia, Y. Xia, D. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, Z. Xue, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. X. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, S. P. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. A. Zafar, A. Zallo, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. B. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, S. H. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, and J. H. Zou

Subjects
Physics, Nuclear and High Energy Physics, Electron–positron annihilation, Analytical chemistry, Pi, Sigma, High Energy Physics::Experiment, Lambda, Bar (unit)
Abstract

Using a sample of 1:06 X 10(8) psi(3686) events collected with the BESIII detector, we present the first observation of the decays of psi(3686) -> Lambda(Sigma) over bar (+) pi(-) + c.c. and psi(3686) -> Lambda(Sigma) over bar (-) pi(+) + c.c. The branching fractions are measured to be B(psi(3686) -> Lambda(Sigma) over bar (+) pi(-) + c.c.) = (1.40 +/- 0.03 +/- 0.13) X 10(-4) and B(psi(3686) -> Lambda (Sigma) over bar (-) pi(+) + c.c.) = (1.54 +/- 0.04 +/- 0.13) X 10(-4) where the first errors are statistical and the second ones systematic.

Published
2013
Full Text
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20. Measurement ofχcjdecaying intopn¯π−andpn¯π−π0

Author

M. Ablikim, M. N. Achasov, X. C. Ai, O. Albayrak, M. Albrecht, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, S. Braun, R. A. Briere, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, X. K. Chu, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, C. Dong, J. Dong, L. Y. Dong, M. Y. Dong, S. X. Du, J. Z. Fan, J. Fang, S. S. Fang, Y. Fang, L. Fava, C. Q. Feng, C. D. Fu, O. Fuks, Q. Gao, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, T. Guo, Y. P. Guo, Y. L. Han, F. A. Harris, K. L. He, M. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, G. M. Huang, G. S. Huang, H. P. Huang, J. S. Huang, L. Huang, X. T. Huang, Y. Huang, T. Hussain, C. S. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, L. W. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, T. Johansson, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, M. Kavatsyuk, B. Kloss, B. Kopf, M. Kornicer, W. Kuehn, A. Kupsc, W. Lai, J. S. Lange, M. Lara, P. Larin, M. Leyhe, C. H. Li, Cheng Li, Cui Li, D. Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, K. Li, Lei Li, P. R. Li, Q. J. Li, T. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, D. X. Lin, B. J. Liu, C. L. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. M. Liu, J. Liu, J. P. Liu, K. Liu, K. Y. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, G. R. Lu, H. J. Lu, H. L. Lu, J. G. Lu, X. R. Lu, Y. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, F. C. Ma, H. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, Y. J. Mo, H. Moeini, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, I. B. Nikolaev, Z. Ning, S. Nisar, X. Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, R. Poling, N. Q., M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, M. Ripka, G. Rong, X. D. Ruan, A. Sarantsev, K. Schoenning, S. Schumann, W. Shan, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, W. M. Song, X. Y. Song, S. Spataro, B. Spruck, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, Q. J. Wang, S. G. Wang, W. Wang, X. F. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, D. H. Wei, J. B. Wei, P. Weidenkaff, S. P. Wen, M. Werner, U. Wiedner, M. Wolke, L. H. Wu, N. Wu, Z. Wu, L. G. Xia, Y. Xia, D. Xiao, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, L. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, Z. Xue, L. Yan, W. B. Yan, W. C. Yan, Y. H. Yan, H. X. Yang, L. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, S. P. Yu, C. Z. Yuan, W. L. Yuan, Y. Yuan, A. Yuncu, A. A. Zafar, A. Zallo, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. B. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. J. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, S. H. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. H. Zhang, Z. P. Zhang, Z. Y. Zhang, G. Zhao, J. W. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, Q. W. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, Li Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, K. Zhu, K. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, and J. H. Zou

Subjects
Nuclear physics, Physics, Formalism (philosophy of mathematics), Nuclear and High Energy Physics, Partial wave analysis, Electron–positron annihilation, Analytical chemistry, Pi, High Energy Physics::Experiment, Astrophysics, Nuclear Experiment
Abstract

Using (106.41 +/- 0.86) x 10(6) Psi(3686) events collected with the BESIII detector at BEPCII, we study for the first time the decay chi(cJ) -> eta'K+K- (J = 1, 2), where eta' -> gamma rho(0) and eta' -> eta pi(+)pi(-). A partial wave analysis in the covariant tensor amplitude formalism is performed for the decay chi(c1) -> eta'K+K-. Intermediate processes chi(c1) -> eta'f(2)'(1525) chi(c1) -> K-0*(1430)K-+/-(-/+) (K-0*(1430)(+/-) -> eta'K-+/-) are observed with statistical significances larger than 5 sigma, and their branching fractions are measured.

Published
2012
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21. Measurement of the integrated luminosities of the data taken by BESIII at √ s = 3.650 and 3.773 GeV

Author

M. Ablikim, M. N. Achasov, O. Albayrak, D. J. Ambrose, F. F. An, Q. An, J. Z. Bai, R. Baldini Ferroli, Y. Ban, J. Becker, J. V. Bennett, M. Bertani, J. M. Bian, E. Boger, O. Bondarenko, I. Boyko, S. Braun, R. A. Briere, V. Bytev, H. Cai, X. Cai, O. Cakir, A. Calcaterra, G. F. Cao, S. A. Cetin, J. F. Chang, G. Chelkov, G. Chen, H. S. Chen, J. C. Chen, M. L. Chen, S. J. Chen, X. R. Chen, Y. B. Chen, H. P. Cheng, Y. P. Chu, D. Cronin-Hennessy, H. L. Dai, J. P. Dai, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, W. M. Ding, Y. Ding, L. Y. Dong, M. Y. Dong, S. X. Du, J. Fang, S. S. Fang, L. Fava, C. Q. Feng, P. Friedel, C. D. Fu, J. L. Fu, O. Fuks, Y. Gao, C. Geng, K. Goetzen, W. X. Gong, W. Gradl, M. Greco, M. H. Gu, Y. T. Gu, Y. H. Guan, A. Q. Guo, L. B. Guo, T. Guo, Y. P. Guo, Y. L. Han, F. A. Harris, K. L. He, M. He, Z. Y. He, T. Held, Y. K. Heng, Z. L. Hou, C. Hu, H. M. Hu, J. F. Hu, T. Hu, G. M. Huang, G. S. Huang, J. S. Huang, L. Huang, X. T. Huang, Y. Huang, T. Hussain, C. S. Ji, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, L. L. Jiang, X. S. Jiang, J. B. Jiao, Z. Jiao, D. P. Jin, S. Jin, F. F. Jing, N. Kalantar-Nayestanaki, M. Kavatsyuk, B. Kloss, B. Kopf, M. Kornicer, W. Kuehn, W. Lai, J. S. Lange, M. Lara, P. Larin, M. Leyhe, C. H. Li, Cheng Li, Cui Li, D. M. Li, F. Li, G. Li, H. B. Li, J. C. Li, K. Li, Lei Li, P. R. Li, Q. J. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, X. R. Li, Z. B. Li, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, D. X. Lin(Lin), B. J. Liu, C. L. Liu, C. X. Liu, F. H. Liu, Fang Liu, Feng Liu, H. B. Liu, H. H. Liu, H. M. Liu, J. P. Liu, K. Liu, K. Y. Liu, P. L. Liu, Q. Liu, S. B. Liu, X. Liu, Y. B. Liu, Z. A. Liu, Zhiqiang Liu, Zhiqing Liu, H. Loehner, X. C. Lou, G. R. Lu, H. J. Lu, J. G. Lu, X. R. Lu, Y. P. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, M. Lv, F. C. Ma, H. L. Ma, Q. M. Ma, S. Ma, T. Ma, X. Y. Ma, F. E. Maas, M. Maggiora, Q. A. Malik, Y. J. Mao, Z. P. Mao, J. G. Messchendorp, J. Min, T. J. Min, R. E. Mitchell, X. H. Mo, H. Moeini, C. Morales Morales, K. Moriya, N. Yu. Muchnoi, H. Muramatsu, Y. Nefedov, I. B. Nikolaev, Z. Ning, S. Nisar, S. L. Olsen, Q. Ouyang, S. Pacetti, J. W. Park, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, R. Poling, E. Prencipe, M. Qi, S. Qian, C. F. Qiao, L. Q. Qin, X. S. Qin, Y. Qin, Z. H. Qin, J. F. Qiu, K. H. Rashid, C. F. Redmer, G. Rong, X. D. Ruan, A. Sarantsev, M. Shao, C. P. Shen, X. Y. Shen, H. Y. Sheng, M. R. Shepherd, W. M. Song, X. Y. Song, S. Spataro, B. Spruck, G. X. Sun, J. F. Sun, S. S. Sun, Y. J. Sun, Y. Z. Sun, Z. J. Sun, Z. T. Sun, C. J. Tang, X. Tang, I. Tapan, E. H. Thorndike, D. Toth, M. Ullrich, I. Uman, G. S. Varner, B. Wang, D. Wang, D. Y. Wang, K. Wang, L. L. Wang, L. S. Wang, M. Wang, P. Wang, P. L. Wang, Q. J. Wang, S. G. Wang, X. F. Wang, X. L. Wang, Y. D. Wang, Y. F. Wang, Y. Q. Wang, Z. Wang, Z. G. Wang, Z. H. Wang, Z. Y. Wang, D. H. Wei, J. B. Wei, P. Weidenkaff, Q. G. Wen, S. P. Wen, M. Werner, U. Wiedner, L. H. Wu, N. Wu, S. X. Wu, W. Wu, Z. Wu, L. G. Xia, Y. X Xia, Z. J. Xiao, Y. G. Xie, Q. L. Xiu, G. F. Xu, Q. J. Xu, Q. N. Xu, X. P. Xu, Z. R. Xu, Z. Xue, L. Yan, W. B. Yan, W. C Yan, Y. H. Yan, H. X. Yang, Y. Yang, Y. X. Yang, H. Ye, M. Ye, M. H. Ye, B. X. Yu, C. X. Yu, H. W. Yu, J. S. Yu, S. P. Yu, C. Z. Yuan, Y. Yuan, A. A. Zafar, A. Zallo, S. L. Zang, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. H. Zhang, H. Y. Zhang, J. Q. Zhang, J. W. Zhang, J. Y. Zhang, J. Z. Zhang, Lili Zhang, S. H. Zhang, X. J. Zhang, X. Y. Zhang, Y. Zhang, Y. H. Zhang, Z. P. Zhang, Z. Y. Zhang, Zhenghao Zhang, G. Zhao, J. W. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, Q. Zhao, S. J. Zhao, T. C. Zhao, X. H. Zhao, Y. B. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, Y. H. Zheng, B. Zhong, L. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, K. Zhu, K. J. Zhu, X. L. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, J. Zhuang, B. S. Zou, J. H. Zou, Doğuş Üniversitesi, Fen Edebiyat Fakültesi, Fizik Bölümü, TR3959, Çetin, Serkant Ali, and Research unit Nuclear & Hadron Physics

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), Scattering, Detector, POTENTIALS, VECTOR, Astronomy and Astrophysics, Bhabha Scattering Events, Cross Section, UPPER-BOUNDS, law.invention, Nuclear physics, Integrated Luminosity, law, KLEIN-GORDON EQUATION, Collider, Instrumentation, Bhabha scattering
Abstract

Data sets were collected with the BESIII detector at the BEPC II collider at the center-of-mass energy of root s=3.650 GeV during May 2009 and at root s=3.773 GeV from January 2010 to May 2011. By analyzing the large angle Bhabha scattering events, the integrated luminosities of the two data sets are measured to be (44.49 +/- 0.02 +/- 0.44) pb(-1) and (2916.94 +/- 0.18 +/- 29.17) pb(-1), respectively, where the first error is statistical and the second error is systematic.

Published
2013
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22. [Establishment of human glioma cell line--nude mice solid tumor model NHG-1 and its characteristics]

Author

Q, Huang, Z W, Du, G D, Xu, Z Y, Liu, Y H, Guo, G L, Chen, W X, Ma, Q Y, Tan, Q N, Xu, and B, Li

Subjects
Male, Mice, Brain Neoplasms, Animals, Humans, Female, Glioma, Neoplasm Transplantation, Cell Line
Abstract

Establishment and its characteristics of a nude mice solid tumor model NHG-1 from human glioma cell line are reported. 5-8 week old NC nude mice of both sexes and SHG-44 cell line used in this experiment were from our laboratory. The initial successful transplantation rate was 7/11 (64%) and that of 30 passages in the subsequent 4 years was 100%. After subcutaneous inoculation, growth curve showed a latent period in week 1-2, slow growing period in week 3-4, rapid growing period in week 5-6 and a final plateau period in week 7. The doubling time was 7 days and cell cycle time was 2.5 days. The cells in G1, S and G2M phases comprised 56%, 27% and 17%, respectively. The survival time of the host was 54 +/- 15 days. The tumor tissues showed a tendency towards invading the surrounding soft tissues. By morphological observation with light and electron microscopes, LDH isozyme assay, PAP immuno-histochemistry labelling GFAP and chromosome analysis, it is confirmed that the transplantable tumor possesses the characteristics of human malignant glioma. The estrogen receptor in the transplantable tumors demonstrated by cytochemical assay indicates that the glioma carcinogenesis is related to endocrine factor of the host. The therapeutic effects of anticancer drugs, such as ACNU, BCNU and 10-hydroxy-2-decenoic acid from the royal jelly on NHG-1 model are evaluated.

Published
1987

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