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3. [Call for attention to the standardized management of herpes zoster]

Author

F, Hao and R Y, Li

Subjects
Herpesvirus 3, Human, Incidence, Vaccination, Humans, Neuralgia, Postherpetic, Herpes Zoster, Aged
Abstract

Herpes zoster (HZ) is a common viral disease that mainly affects the elderly population with a rising incidence. The occurrence of postherpetic neuralgia (PHN) is the dominant and thorny complication, which thus further aggravates the disease burden. Vaccination and clinical application of small molecules and biologics for certain diseases are identified as new risk factors for the development of HZ development. HZ vaccination has emerged as a pivotal prevention measure against the occurrence of HZ. Refining the diagnosis and early standardized antiviral treatment of HZ is the key to improve standardized management strategy.带状疱疹（HZ）是一种常见的病毒性疾病，主要影响老年人群，其发病率呈上升趋势。HZ后神经痛（PHN）是HZ最主要且棘手的并发症，会加重疾病负担。疫苗接种和小分子及生物制剂临床应用成为HZ新的发病风险因素。接种HZ疫苗是预防该病发生的重要举措。细化HZ诊断和早期积极抗病毒治疗是其规范化管理的关键。.

Published
2022

5. Assessment of the degree of arterial stenosis in intracranial atherosclerosis using 3D high-resolution MRI: comparison with time-of-flight MRA, contrast-enhanced MRA, and DSA

Author

D.-L. Zhao, R.-Y. Li, C. Li, X.-H. Chen, J.-W. Yu, Y. Zhang, and S. Ju

Subjects
Radiology, Nuclear Medicine and imaging, General Medicine
Abstract

To compare the accuracy of three-dimensional (3D) high-resolution (HR) magnetic resonance imaging (MRI), time-of-flight magnetic resonance angiography (TOF-MRA), contrast-enhanced magnetic resonance angiography (CE-MRA), and digital subtraction angiography (DSA) in measuring the degree of stenosis in intracranial atherosclerosis.All patients with intracranial artery ischaemic events underwent HR-MRI, TOF-MRA, and CE-MRA analysis, and some of these patients underwent DSA examination. The correlation between different methods for measuring the degree of lumen stenosis was analysed. The accuracy of HR-MRI, TOF-MRA, and CE-MRA was evaluated and compared with that of DSA.A total of 189 arterial stenoses were identified in 93 patients. Of these, 72 patients with 142 arterial stenoses underwent DSA examination. A very strong correlation between HR-MRI and CE-MRA measurements was shown (r=0.839, p0.0001). The correlation between HR-MRI and TOF-MRA measurements was strong (r=0.720, p0.0001). A very strong correlation between HR-MRI and DSA measurements was found (r=0.864, p0.0001), and a similar correlation was observed between CE-MRA, and DSA measurements (r=0.843, p0.0001). The correlation between TOF-MRA and DSA measurements was strong (r=0.686, p0.0001). There was substantial agreement between HR-MRI and DSA measurements (K = 0.772) and between CE-MRA, and DSA measurements (K = 0.734) that was slightly higher than the agreement between TOF-MRA and DSA measurements (K = 0.636).HR-MRI can accurately measure stenosis (especially for moderate and severe stenosis) in intracranial atherosclerosis by direct visualisation of the vessel lumen and steno-occlusive plaque.

Published
2022

6. A comprehensive review on water stable metal-organic frameworks for large-scale preparation and applications in water quality management based on surveys made since 2015

Author

J. P. Chen, Viatcheslav Freger, M. Lin, R. Y. Li, Constance Van Horne, Z. S. Wang, R. K. Cai, and Z. Y. Yuan

Subjects
Environmental Engineering, Scale (ratio), Wastewater, Environmental engineering, Environmental science, Metal-organic framework, Pollution, Waste Management and Disposal, Water Science and Technology, Water quality management
Abstract

Water is one of essential resources of modern society. Employing cost-effective technologies to treat water and wastewater is of vital importance for household uses, industries and the environment. Water-stable metal-organic frameworks (MOFs) have emerged as promising innovative materials for water treatment, due to their versatility and properties such as large internal surface area, designable pore sizes, and chemical functionalities. In highly porous MOFs, metal center(s)/cluster(s) and organic ligands are linked with coordination bonds. This review paper presents the most recent developments in the industrial-scale synthesis of MOFs and applications in water purification. MOFs can be fabricated by several approaches; the microwave assisted continuous flow synthesis technologies can lead to higher production yields. The fabricated MOFs are then purified by the organic solvent and/or the solid separation, and activated by a few technologies (e.g., supercritical CO2). Process safety in production, reactors design, and process optimization are important in production. The shaping techniques for MOFs on supporting materials via surface grafting/coating or embedment can be used to fabricate the MOFs-based materials with the better stability suitable for industrial applications. MOFs demonstrate much better performances than the commercially available materials in adsorption, filtration, sensing, and catalysis. Toxicity from MOFs is mainly due to the chemicals involved in the production and nano-size effects on human cells. Mitigation strategies like environmental-friendly processes for fabrication of MOFs and shaping using polymer are suggested. Various advantages from MOFs make them suitable for water treatment in the near future.

Published
2022
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8. [Preliminary application of postoperative fast track transfer to intensive care unit for the geriatric hip fractures under enhanced recovery after surgery]

Author

T, Xie, Y F, Rui, S Q, Liu, H, Chen, Y, Yang, X D, Qiu, H, Li, Q, Li, C, Chen, Y Z, Huang, B B, Ma, P P, Lu, Y M, Qi, R Y, Li, S Y, Hu, L, Shi, X L, Cui, J, Sun, Z, Wang, X J, Lu, Y, Cui, M, Zhang, Y J, Li, L Q, Ren, J H, Zou, and C, Wang

Subjects
Intensive Care Units, Hip Fractures, Humans, Postoperative Period, Enhanced Recovery After Surgery, Aged, Retrospective Studies
Published
2020

10. Observation of a Resonance X(1835) in J/ψ→γπ+π−η′

Author

H. B. Li, S. L. Zang, C. L. Luo, Houbing Lu, C. C. Zhang, Yi Jin, S.L. Olsen, Y. X. Yang, Fang Liu, Y. C. Zhu, Yudan Wang, G. R. Lu, F. Lu, L. Y. Dong, H.B. Liao, P. L. Wang, X. X. Xie, J. B. Jiao, Y. Z. Sun, Han-Qing Zheng, H. M. Hu, Z. A. Zhu, X. Shi, D. X. Zhao, B. Y. Zhang, Hangxu Li, J. W. Zhao, H. H. Liu, J. C. Li, X. B. Ma, Xuai Zhuang, J. H. Liu, G. W. Yu, Z. P. Zhang, Jin Chen, F. A. Harris, Y. Zeng, J. G. Lu, J. Nie, Zujian Wang, Feng Shi, C. Z. Yuan, Z.J. Guo, Y. Q. Guo, Huirun Chen, Y. B. Chen, T. Hu, H. S. Chen, Xingzhu Cui, S. S. Fang, Qiyang Zhang, Y. S. Dai, W. R. Zhao, F. Liu, J. G. Bian, Zheng Wang, H. X. Yang, XZ（蔡翔舟） Cai, Y. F. Liang, X. H. Mo, C. S. Gao, Yu Zeng, F. C. Ma, Y. F. Lai, L. S. Wang, Jinxing Zheng, Y.Y. Zhang, S. S. Sun, R. Y. Li, D. P. Jin, H. F. Chen, Y. N. Gao, X. M. Xia, M. H. Ye, W. F. Wang, P. Wang, B. X. Zhang, J. P. Liu, Z. G. Zhao, Zhe Wang, N. Wu, X. S. Jiang, Cunfeng Wei, Q. F. Dong, Ning Zhou, X. Y. Shen, D. H. Zhang, Jiming Yang, Yingchun Zhu, X. Q. Li, L. P. Zhou, Z. Y. Ren, Z. P. Mao, J. F. Qiu, Lianyou Shan, J. W. Zhang, Z. J. Sun, W. G. Li, Q. M. Ma, Y. T. Gu, Bo Xin, D. Y. Wang, H. Qin, M. He, H. L. Ma, S. M. Li, Fan Yang, D. L. Shen, H. M. Liu, W. D. Li, C. X. Liu, Z. P. Zheng, D. H. Wei, X. Y. Zhang, Z. Y. Yi, Y. Yuan, Y. S. Zhu, K. L. He, R. G. Liu, Q. M. Zhu, Y. N. Guo, B.S. Zou, J. B. Liu, M. Z. Wang, Z.Q. Zhang, Xiru Huang, G. L. Tong, H. S. Sun, Z. Y. Wang, Haiping Peng, Yang Tian, G. S. Huang, M. Ablikim, B. A. Zhuang, Jianwei Sun, Y. X. Ye, Y. Xu, G. F. Xu, S. Jin, S. X. Du, M. L. Yan, P. P. Zhao, J. C. Chen, X. Tang, X. T. Huang, G. Rong, J. Fang, Xunchao Zhang, Z. Z. Du, M. G. Zhao, H. Y. Zhang, J. Y. Zhang, Y. P. Chu, L. L. Ma, X. B. Ji, Y. K. Heng, Z. A. Liu, Y.L. Li, Shang Lunlin, Y. Ban, G. Li, X.L. Li, C. D. Fu, Z. Y. Deng, J. Z. Bai, H. Y. Sheng, Z. Q. Tan, S. P. Chi, N. D. Qi, K. J. Zhu, J. M. Yuan, S. D. Gu, and G. S. Varner

Subjects
Physics, Nuclear magnetic resonance, Resonance
Published
2020
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11. Evidence of ψ(3770) non-DD¯ decay to J/ψπ+π−

Author

M. He, X. Tang, W. G. Li, Q. M. Zhu, D. L. Shen, K. L. He, J. W. Zhao, L. P. Fu, Y. C. Xu, S. W. Han, J. M. Zhang, S. L. Zang, C. X. Liu, G. W. Yu, M. Z. Wang, Z. A. Liu, M. Y. Gong, C. F. Liu, Yingchun Zhu, Zheng Wang, S.L. Olsen, H. M. Liu, J. G. Lu, H. S. Sun, Houbing Lu, C. C. Zhang, Haiping Peng, W. R. Zhao, F. Liu, F. Li, F. C. Ma, Q. Yue, Y. Ban, M. H. Ye, R. B. Li, Fang Liu, J. C. Chen, Jing Wang, Y. B. Zhao, J. Z. Bai, Y. N. Gao, H. M. Hu, T. Hu, XZ（蔡翔舟） Cai, Qiyang Zhang, H. S. Chen, Yang Tian, J. F. Qiu, L. Y. Dong, D. X. Zhao, B. Y. Zhang, Jiawei Zhao, Jiemin Li, J. P. Liu, S.S. Sun, S. D. Gu, J. Nie, Z. Y. Wang, J. Fang, L. S. Zheng, H. Y. Sheng, L. L. Ma, G. F. Xu, S. Jin, S. X. Du, X. L. Luo, H. Y. Zhang, W. D. Li, L. P. Zhou, S. T. Xue, M. L. Yan, G. A. Yang, P. Wang, N. D. Qi, Y. M. Dai, Liang Huang, X. Y. Zhang, Z. G. Zhao, X. C. Zhong, Z. J. Ke, R. G. Liu, G. S. Varner, Z. P. Mao, Y. S. Dai, J. Ying, J. Y. Zhang, J. B. Liu, H. Shen, Y. C. Zhu, R. Y. Li, F. Lu, C. S. Gao, Z. Z. Du, Y. P. Chu, X. B. Ji, P. L. Wang, Meng Wang, W. B. Yan, Jinxing Zheng, Z. J. Sun, X. H. Mo, Z. X. Liu, X. C. Meng, Y. K. Heng, Y. Y. Zhang, Cunfeng Wei, Ning Zhou, F. A. Harris, C. D. Qian, Y. N. Guo, Yudan Wang, S. Q. Tang, J. C. Li, D. Tian, Y. Jin, J. W. Zhang, T. Hong, L. S. Wang, G. Li, S. D. Yang, J. J. He, Zhe Wang, C. D. Fu, H. X. Yang, G. R. Lu, Z.J. Guo, J. G. Bian, Z. A. Zhu, Y. Yuan, Y. S. Zhu, Xingzhu Cui, Z. P. Zhang, Xintong Li, M. L. Gao, X. X. Xie, X. M. Xia, Bing Zhou, Chun-Hua Jiang, L. W. Song, Y. Zeng, S. P. Chi, Y. Q. Guo, P. P. Zhao, H. Y. Fu, Zujian Wang, Q. J. Li, B. X. Zhang, K. J. Zhu, S. Q. Zhang, J. M. Yuan, Y. B. Chen, Y. Z. Sun, S. S. Fang, Y. B. Liu, Y. F. Lai, Lei Zhang, H. F. Chen, W. F. Wang, Zhiyun Zheng, G. Rong, Feng Shi, Z. J. Lu, H. H. Li, B.S. Zou, N. Wu, Y. J. Zhang, Guangzhao Zhou, Xiru Huang, G. L. Tong, B. A. Zhuang, X. Y. Shen, Jiming Yang, G. S. Huang, K. Li, J. Z. Wang, D. P. Jin, X. S. Jiang, D. H. Zhang, C. S. Yu, J. F. Chang, Yiyun Zhang, Z. D. Nie, Y. X. Ye, E. C. Ma, X. H. He, X. Q. Li, Jun-Bing Ma, and W. X. Gong

Published
2020
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12. Observation of a Near-Threshold Enhancement in the pp¯ Mass Spectrum from Radiative J/ψ→γpp¯ Decays

Author

B.S. Zou, Yudan Wang, S. Q. Tang, J. Chen, H. M. Hu, W. B. Yan, J. G. Lu, G. R. Lu, Z. A. Zhu, D. Paluselli, G. S. Huang, Q. J. Li, T. Hu, XZ（蔡翔舟） Cai, Jiming Yang, Bing Zhou, F. Li, F. C. Ma, Q. Yue, J. C. Chen, R. Malchow, J. W. Zhao, G. W. Yu, K. Li, C. F. Liu, Yingchun Zhu, G. Li, Zhe Wang, R. B. Li, Jing Wang, Y. B. Zhao, Z. A. Liu, Xingzhu Cui, W. D. Li, W. R. Zhao, F. Liu, Liang Huang, S. D. Gu, Jie Chen, C. D. Fu, Y. Ban, B. D. Jones, S.S. Sun, M. L. Gao, Y. Zeng, Y. N. Gao, J. Fang, P. P. Zhao, Y. Q. Guo, Feng Shi, L. S. Zheng, J. Z. Wang, J. F. Qiu, S. T. Xue, Y. B. Chen, K. L. He, Z. P. Zheng, X. C. Zhong, Qiyang Zhang, Z. Y. Wang, Z. J. Lu, H. Y. Zhang, Lei Zhang, J. Z. Bai, X. H. Mo, L. S. Wang, H. H. Li, Guangzhao Zhou, Zheng Wang, X. M. Xia, X. C. Meng, G. S. Varner, Z. J. Guo, Y. F. Lai, Joseph Izen, G. Rong, S. W. Han, X. Tang, D. P. Jin, J. F. Chang, Xintong Li, Jun-Bing Ma, Xiru Huang, H. F. Chen, Fang Liu, J. Ying, W. F. Wang, W. H. Toki, J. M. Zhang, N. Wu, T. Hong, X. X. Xie, P. Wang, S. Q. Zhang, H. Y. Fu, G. L. Tong, B. A. Zhuang, J. Y. Zhang, H. Y. Sheng, W. X. Gong, Z. P. Zhang, Yiyun Zhang, Chun-Hua Jiang, M. H. Ye, Y. Z. Sun, D. H. Zhang, D. X. Zhao, B. Y. Zhang, Y. P. Chu, X. B. Ji, C. S. Yu, Jiemin Li, J. P. Liu, X. L. Luo, X. Y. Shen, N. D. Qi, Y. M. Dai, Y. X. Ye, Zujian Wang, L. Y. Dong, Y. C. Zhu, G. A. Yang, Meng Wang, D. Kong, C. D. Qian, Z. Z. Du, M. He, D. L. Shen, X. S. Jiang, M. Y. Gong, P. L. Wang, W. Dunwoodie, X. Q. Li, Y. K. Heng, Y. Y. Zhang, X. Y. Zhang, W. G. Li, S. P. Chi, Z. X. Liu, C. X. Liu, R. G. Liu, D. Tian, F. Lu, J. B. Liu, H. M. Liu, J. J. He, K. J. Zhu, J. M. Yuan, J. G. Bian, B. X. Zhang, Y. Jin, F. A. Harris, Y. N. Guo, Z. D. Nie, Y. Yuan, Y. S. Zhu, G. F. Xu, S. Jin, L. W. Song, S. S. Fang, C. Z. Yuan, Y. B. Liu, Yang Tian, E. C. Ma, S. X. Du, M. L. Yan, X. H. He, Y. J. Zhang, H. S. Chen, L. P. Zhou, Z. P. Mao, S. L. Zang, S.L. Olsen, J. Nie, Y. S. Dai, C. S. Gao, Jinxing Zheng, Q. M. Zhu, Y. C. Xu, M. Z. Wang, H. S. Sun, Haiping Peng, X. C. Lou, S. D. Yang, L. P. Fu, Houbing Lu, C. C. Zhang, J. C. Li, H. X. Yang, Z. G. Zhao, Z. J. Sun, H. Shen, R. Y. Li, Cunfeng Wei, Ning Zhou, J. W. Zhang, Jiawei Zhao, and Z. J. Ke

Subjects
Physics, Near threshold, Mass spectrum, Radiative transfer, Atomic physics
Published
2020
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13. Partial wave analysis of ψ′→π+π−π0 at BESII

Author

Z. A. Liu, Y. X. Yang, Y. Ban, Z. P. Zheng, Feng Shi, S. Q. Zhang, H. X. Yang, H.S. Xu, Qiyang Zhang, Y. Zeng, X. L. Luo, Y. Q. Guo, Y. Z. Sun, J. Z. Bai, Y. B. Chen, Xiru Huang, G. L. Tong, G. F. Xu, P. Wang, Guangzhao Zhou, Q. M. Zhu, M. H. Ye, J. C. Li, Y. F. Lai, F. Li, F. C. Ma, Q. Yue, H. F. Chen, J. F. Qiu, W. F. Wang, M. Ablikim, B. A. Zhuang, Y. C. Zhu, J. P. Liu, S. Jin, N. Wu, Y. C. Xu, P. L. Wang, F. A. Harris, H. S. Chen, J. B. Zhao, Han-Qing Zheng, X. H. He, Xingzhu Cui, M. Z. Wang, X. Q. Li, X. S. Jiang, L. Y. Dong, X. Y. Zhang, H. M. Hu, F. Lu, Z. Y. Ren, W. G. Li, R. G. Liu, X. Y. Shen, J. B. Liu, S. D. Gu, G. S. Huang, Xintong Li, D. Y. Wang, H. Qin, J. G. Lu, H. Y. Sheng, W. R. Zhao, M. He, F. Liu, D. L. Shen, S. T. Xue, H. S. Sun, Zheng Wang, Y. P. Chu, J. G. Bian, C. X. Liu, Z. G. Zhao, K. L. He, X. B. Ji, X. X. Xie, G. S. Varner, Qingying Jia, H. M. Liu, Bo Xin, Yudan Wang, Yingchun Zhu, Y. N. Gao, N. D. Qi, T. Hu, Y. B. Zhao, XZ（蔡翔舟） Cai, X. J. Zhao, Y. Jin, S. Z. Wang, Fang Liu, J. C. Chen, B. X. Zhang, G. R. Lu, Z. J. Sun, C. Z. Yuan, Zhe Wang, Jiming Yang, Q. M. Ma, Z. Z. Du, Z. Y. Yi, Jun Chen, Shang Lunlin, X. M. Xia, G. Li, C. L. Luo, J. Fang, L. S. Zheng, Yang Tian, Q. J. Li, R. B. Li, Z. A. Zhu, X.L. Li, Kelin Wang, Jin Chen, C. D. Fu, Z. X. Liu, Xunchao Zhang, J. W. Zhao, S. S. Fang, Nongjian Tao, C. C. Zhang, L. H. Yi, H. Y. Fu, Z. Y. Deng, Z. D. Nie, Z. Y. Wang, C. D. Qian, S. M. Li, Fan Yang, D. X. Zhao, B. Y. Zhang, G. W. Yu, Y. Yuan, Y. S. Zhu, Hangxu Li, Jiemin Li, Jun-Bing Ma, L. S. Wang, D. H. Wei, M. G. Zhao, P. P. Zhao, S. X. Du, S.S. Sun, X. Y. Ma, Bing Zhou, S. P. Chi, W. X. Gong, Huirun Chen, J. Z. Wang, H. Y. Zhang, Lei Zhang, K. J. Zhu, J. M. Yuan, M. L. Yan, Lianyou Shan, G. Rong, X. Shi, J. Y. Zhang, Y. F. Liang, D. P. Jin, X. H. Mo, M. L. Chen, J. F. Chang, L. L. Ma, D. H. Zhang, C. S. Yu, Y. K. Heng, B.S. Zou, Y. Y. Zhang, X. Tang, Yiyun Zhang, Yu Zeng, Y. X. Ye, Y. J. Zhang, Z.Q. Zhang, X. C. Zhong, Liang Huang, L. P. Zhou, Z. P. Zhang, Z. P. Mao, Chun-Hua Jiang, Zujian Wang, M. Y. Gong, Y. M. Wu, Juan Zhang, Y. N. Guo, S. L. Zang, S.L. Olsen, H.B. Liao, Haiping Peng, J. Nie, Y. S. Dai, C. S. Gao, Jinxing Zheng, S. D. Yang, H. L. Dai, R. Y. Li, Cunfeng Wei, Ning Zhou, J. W. Zhang, and Z.J. Guo

Abstract

The decay ψ′→π+π−π0 is analyzed using a sample of 14 million ψ′ events taken with the BESII detector at the BEPC, and the branching fraction is measured to be B(ψ′→π+π−π0)=(18.1±1.8±1.9)×10−5. A partial wave analysis is carried out using the helicity amplitude method. ψ′→ρ(770)π is observed, and the branching fraction is measured to be B(ψ′→ρ(770)π)=(5.1±0.7±1.1)×10−5, where the first error is statistical and the second one is systematic. A high mass enhancement with mass around 2.15 GeV/c2 is also observed. Attributing this enhancement to the ρ(2150) resonance, the branching fraction is measured to be B(ψ′→ρ(2150)π→π+π−π0)=(19.4±2.5−3.4+11.5)×10−5. The results will help in the understanding of the longstanding “ρπ puzzle” between J/ψ and ψ′ hadronic decays.

Published
2020
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14. Measurements of the Cross Section for e+e− → Hadrons at Center-of-Mass Energies from 2 to 5 GeV

Author

B.S. Zou, X. H. Mo, L. S. Wang, J. W. Zhao, X. C. Meng, Feng Shi, G. W. Yu, Xiaolu Ji, H. Shen, P. L. Wang, H. Y. Sheng, R. Y. Li, M. H. Ye, Guangzhao Zhou, C. X. Yu, T. Hong, Yirong Zhu, H. S. Mao, N. D. Qi, F. A. Harris, L. Y. Dong, Xingzhu Cui, Cunfeng Wei, W. G. Li, B. S. Cheng, J. Z. Wang, J. W. Zhang, J. G. Lu, Y. Yuan, Y. S. Zhu, Jun-Bing Ma, G. F. Xu, Z. P. Zhang, Chun-Hua Jiang, X. Y. Shen, H. M. Liu, Jing Wang, Y. B. Zhao, Y. Ban, T. Hu, D. H. Zhang, C. S. Yu, G. S. Huang, D. M. Xi, Z. J. Guo, M. G. Zhao, X. D. Chen, Y. K. Que, B. J. Liu, S. Q. Tang, L. P. Fu, H. B. Li, C. C. Zhang, Zhengguo Zhao, H. M. Hu, H. S. Chen, B. D. Jones, H. H. Li, G. R. Lu, E. C. Ma, J. B. Choi, Z. A. Zhu, H. L. Zhang, J. F. Qiu, C. D. Qian, Y. Z. Huang, H. W. Zhao, X. Q. Li, W. B. Yan, X. H. He, S. D. Gu, J. Z. Bai, Q. J. Li, Z. P. Zheng, Peng Zhang, P. Q. Li, H. X. Yang, D. Li, J. S. Kang, Hyunyong Kim, Jiawei Zhao, Z. J. Lu, Z. Z. Du, Wei Li, J. C. Li, X. Y. Zhang, J. P. Liu, R. G. Liu, C. Y. Yang, J. Y. Suh, Z. J. Ke, Xiru Huang, Feng Liu, Tai Young Kim, J. G. Bian, G. L. Tong, Tao Liu, J. Y. Zhang, S. W. Ye, G. A. Yang, Seong Keun Kim, Y. F. Lai, Z. X. Liu, G. S. Varner, B. A. Zhuang, H. Z. Shi, Xuan Yang, X. M. Xia, Qiyang Zhang, K. L. He, H. Park, Fei-Fei Liu, S. W. Han, Lingxuan Zhang, X. F. Song, W. Dunwoodie, H. F. Chen, Hongming Zhang, P. P. Zhao, Z. D. Nie, D. Kong, H. Y. Fu, Xinglong Li, W. G. Yan, W. H. Toki, Liangfeng Sun, Y. K. Heng, Y. Y. Zhang, Lei Zhang, Q. H. Hu, S. T. Xue, Y. X. Ye, S. P. Chi, Y. Jin, Joseph Izen, D. Paluselli, G. Rong, C. M. Yang, M. He, D. L. Shen, G. Y. Hu, K. J. Zhu, B. W. Shen, D. X. Zhao, B. Y. Zhang, Jiemin Li, J. C. Chen, R. Malchow, Y. Y. Wang, Z. Y. Wang, Yi Chen, S. M. Wang, Y. P. Chu, L. S. Zheng, P. Wang, Bing Zhou, Y. N. Guo, A. D. Chen, N. Wu, Y. L. Han, S. Q. Zhang, Y. Z. Sun, W. R. Zhao, X. R. Qi, F. Lu, S.L. Olsen, L. P. Zhou, Z. P. Mao, W. Yang, J. Nie, Y. S. Dai, Y. Y. Shao, C. S. Gao, Jinxing Zheng, Q. M. Zhu, Y. C. Xu, J. He, H. S. Sun, X. C. Lou, X. X. Xie, Y. B. Liu, X. L. Luo, and J. J. He

Subjects
Physics, Nuclear physics, Cross section (physics), Hadron, Center of mass
Published
2020
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15. Intrathecal Grafting of Porcine Chromaffin Cells Reduces Formalin-Evoked c-Fos Expression in the Rat Spinal Cord

Author

J. C. Sol M.D., R. Y. Li, B. Sallerin, S. Jozan, H. Zhou, V. Lauwers-Cances, F. Tortosa, P. Chaynes, C. Mascott, R. Bastide, and Y. Lazorthes

Subjects
Medicine
Abstract

Chromaffin cells from the adrenal gland secrete a combination of neuroactive compounds including catecholamines, opioid peptides, and growth factors that have strong analgesic effects, especially when administered intrathecally. Preclinical studies of intrathecal implantation with xenogeneic bovine chromaffin cells in rats have provided conflicting data with regard to analgesic effects, and recent concern over risk of prion transmission has precluded their use in human clinical trials. We previously developed a new, safer source of adult adrenal chromaffin cells of porcine origin and demonstrated an in vivo antinociceptive effect in the formalin test, a rodent model of tonic pain. The goal of the present study was to confirm porcine chromaffin cell analgesic effects at the molecular level by evaluating neural activity as reflected by spinal cord c-Fos protein expression. To this end, the expression of c-Fos in response to intraplantar formalin injection was evaluated in animals following intrathecal grafting of 106 porcine or bovine chromaffin cells. For the two species, adrenal chromaffin cells significantly reduced the tonic phases of the formalin response. Similarly, c-Fos-like immunoreactive neurons were markedly reduced in the dorsal horns of animals that had received injections of xenogeneic chromaffin cells. This reduction was observed in both the superficial (I—II) and deep (V—VI) lamina of the dorsal horn. The present study demonstrates that both xenogeneic porcine and bovine chromaffin cells transplanted into the spinal subarachnoid space of the rat can suppress formalin-evoked c-Fos expression equally, in parallel with suppression of nociceptive behaviors in the tonic phase of the test. These findings confirm previous reports that adrenal chromaffin cells may produce antinociception by inhibiting activation of nociceptive neurons in the spinal dorsal horn. Taken together these results support the concept that porcine chromaffin cells may offer an alternative xenogeneic cell source for transplants delivering pain-reducing neuroactive substances.

Published
2005
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16. MicroRNA-378 promotes the malignant progression of oral squamous cell carcinoma by mediating FOXN3

Author

N, Ding, M, Luo, X-L, Liao, Q-Y, Bao, R-Y, Li, and B, Wu

Subjects
Male, Cell Cycle Proteins, Forkhead Transcription Factors, Prognosis, Up-Regulation, Gene Expression Regulation, Neoplastic, MicroRNAs, Cell Line, Tumor, Carcinoma, Squamous Cell, Disease Progression, Humans, Female, Mouth Neoplasms, Cell Proliferation, Neoplasm Staging
Abstract

This study aimed to detect the expression of microRNA-378 in OSCC, and further studies its effects on clinicopathology and prognosis of OSCC patients.Real-Time quantitative Polymerase Chain Reaction (RT-qPCR) was used to detect the expression levels of microRNA-378 in 96 pairs of OSCC tissues and paracancerous tissues. The relationship between microRNA-378 expression and pathological parameters and prognosis of OSCC patients was analyzed. The expression level of microRNA-378 in OSCC cells was detected by RT-qPCR as well. Also, microRNA-378 knockdown expression model was constructed using small interfering RNA in OSCC cell lines CAL-27 and Tca8113. Biological functions of OSCC cells were determined using cell counting kit-8 (CCK-8), colony formation, and transwell assay. Western blot was conducted to detect the protein expression of FOXN3 in OSCC cells.RT-qPCR results showed that the expression level of microRNA-378 in OSCC tissues is remarkably higher than that in paracancerous tissues. Compared with OSCC patients with lower expression of microRNA-378, patients with higher expression of microRNA-378 had higher incidences of lymph node metastasis and distant metastasis, as well as shorter overall survival. MicroRNA-378 knockdown significantly decreased proliferative, invasive, and metastatic abilities of OSCC cells. Western blot results showed that microRNA-378 downregulates FOXN3 expression in OSCC cells. Rescue experiments found that microRNA-378 could regulate FOXN3, thus promoting the malignant progression of OSCC.MicroRNA-378 is highly expressed in OSCC, which is significantly associated with tumor staging, distant metastasis, and poor prognosis of OSCC. It is shown that microRNA-378 may promote malignant progression of OSCC by regulating FOXN3.

Published
2019

17. Simultaneous determination and excretion study of six flavonoids in rat after oral administration ofFructus Sophoraeextract by liquid chromatography tandem mass spectrometry

Author

Zhiyong Zhang, Peipei Jia, Lu Chang, Lantong Zhang, Xuran Zhi, Ning Sheng, and R. Y. Li

Subjects
chemistry.chemical_classification, Sophoricoside, Chromatography, 010405 organic chemistry, Elution, 010401 analytical chemistry, Extraction (chemistry), General Chemistry, 01 natural sciences, Flavones, 0104 chemical sciences, chemistry.chemical_compound, Rutin, chemistry, Liquid chromatography–mass spectrometry, Genistin, Kaempferol
Abstract

A new, sensitive, and selective high-performance liquid chromatography-tandem mass spectrometric method (HPLC-MS/MS) has been developed for the quantification of six flavonoids (sophoricoside, genistin, genistein, rutin, quercetin, and kaempferol) in rat bile and urine. The sample pretreatment was simple by liquid-liquid extraction. Sulfamethalazole was used as internal standard (IS). During method development, the effect of extraction volume, mobile phase composition, column temperature, and injection volume were varied to optimize sensitivity and achieve a run time as short as possible. Chromatographic separation was accomplished on a C18 column with a simple linear gradient elution within 9 min. Full validation of the assay was in accordance with the requirement of the validation of the method in vivo and implemented including specificity, linearity, accuracy, precision, recovery, and matrix effect. This is the first report on determination of the major flavones in rat bile and urine after oral adminis...

Published
2016
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18. Research on solder joint stress damage evaluation method based on discrete SSI model

Author

S. J. Zhang, B. Wan, K. Y. Rong, and Y. R. Y. Li

Subjects
Materials science, business.industry, Soldering, Evaluation methods, Joint stress, Structural engineering, business
Abstract

Based on the discrete SSI(Stress-strength-interference) model, this paper establishes a stress damage evaluation method for the through-hole insertion process. First, based on the Monte Carlo sampling method, the mean value of solder joint stress was clarified, and a stress-strength interference model for through-hole insertion was established. Secondly, after calculating the shape of the solder joints of the through-holes, the simulated load input curve is determined and the stress simulation is performed to obtain the stress and strain simulation results. The stress and strain of the PCB board are measured through experiments. Finally, a random stress model of solder joints was established by Monte Carlo sampling, and a constant strength model of through-hole solder joints was established in combination with material strength. According to the stress strength interference model, the failure probability of process stress damage was calculated, and the stress damage evaluation of solder joints in through-hole insertion process was realized.

Published
2021
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19. [Expert consensus on the diagnosis and treatment of cryptococcal meningitis]

Author

Z Y, Liu, G Q, Wang, L P, Zhu, X J, Lyu, Q Q, Zhang, Y S, Yu, Z H, Zhou, Y B, Liu, W P, Cai, R Y, Li, W H, Zhang, F J, Zhang, H, Wu, Y C, Xu, H Z, Lu, and T S, Li

Subjects
Adult, Male, China, Antifungal Agents, Consensus, Humans, Intracranial Hypertension, Meningitis, Cryptococcal
Abstract

Cryptococcal meningitis is a common and refractory central nervous system infection, with high rates of mortality and disability. The experts of the Society of Infectious Diseases of Chinese Medical Association have reached this consensus after a thorough discussion. Based on the current situation of cryptococcal meningitis in China, the management of cryptococcal meningitis includes 6 aspects: introduction, microorganism identification, clinical manifestations and diagnosis, principles of antifungal therapy, treatment of refractory and recurrent meningitis, treatment of intracranial hypertension. There is not a separate consensus on human immunodeficiency virus (HIV) infection in patients with cryptococcal meningitis. This article focuses on different antifungal regimens and reducing intracranial pressure by reference to Infectious Disease Society of America (IDSA) guidelines. The importance of early diagnosis, combined long-term antifungal therapy, control of intracranial hypertension are emphasized.

Published
2018

21. [Diagnostic value of multi-slice spiral computerized tomographic fistulography in congenital fistula of neck]

Author

H, Zheng, Q, Ye, X Y, Wang, X H, Zheng, X Q, Yang, Y, Chen, Y, Jiang, and R Y, Li

Subjects
Adult, Male, Adolescent, Fistula, Pharyngeal Diseases, Middle Aged, Craniofacial Abnormalities, Young Adult, Branchial Region, Postoperative Complications, Recurrence, Child, Preschool, Humans, Neck Dissection, Female, Child, Tomography, Spiral Computed, Vocal Cord Paralysis, Neck, Retrospective Studies
Published
2017

22. Experimental Investigations of the Detonation Synthesis of Micron Al2O3 by the Precursor of Thermal Decomposition

Author

Xinhua Wang, Hong Hao Yan, Xu-Feng Li, R. Y. Li, and H.L. Yang

Subjects
Exothermic reaction, Materials science, Explosive material, Mechanical Engineering, Thermal decomposition, Analytical chemistry, Detonation, chemistry.chemical_element, Mineralogy, Endothermic process, chemistry.chemical_compound, chemistry, Mechanics of Materials, Aluminium, Hydroxide, General Materials Science, Scherrer equation
Abstract

The Al2O3 is synthesized by detonation of mixed explosive, prepared by mixing RDX and aluminum hydroxide named as precursor of thermal decomposition. The production of detonation is analysed by XRD, TEM and DTA/TG. The curve of XRD indicates that the production are (α+γ)-Al2O3. The average crystal size of Al2O3 is 126nm calculated by the Scherrer equation. The photographs of TEM show that all granules of Al2O3 are spherical, and the average size of granule is 1000nm. The visible exothermic or endothermic peak does not appear on the curve of DTA from 50 to 1300 degree Centigrade. The curve of TG indicates that the production of detonation generates 12% weight loss from 50 to 1300 degree Centigrade.

Published
2014
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23. Idiopathic venous thromboembolism: a potential surrogate for occult cancer

Author

C.-L. Lin, Fung-Chang Sung, R.-Y. Li, Chia-Hung Kao, Wu-Huei Hsu, and Wei-Sheng Chung

Subjects
Adult, Male, medicine.medical_specialty, Lung Neoplasms, Paraneoplastic Syndromes, Colorectal cancer, Taiwan, Comorbidity, Cohort Studies, Sex Factors, Risk Factors, Internal medicine, medicine, Humans, cardiovascular diseases, Risk factor, Aged, Aged, 80 and over, First episode, Gynecology, business.industry, Incidence, Incidence (epidemiology), Liver Neoplasms, Age Factors, Cancer, Venous Thromboembolism, General Medicine, Middle Aged, equipment and supplies, medicine.disease, Cohort, Female, Colorectal Neoplasms, business, Cohort study
Abstract

Background: Several studies have indicated an association between venous thromboembolism (VTE) and a subsequent diagnosis of cancer in Western countries. However, information is scant on subsequent cancer incidence after idiopathic VTE events in Asian people. Through a nationwide cohort study, we evaluated the cancer prevalence of VTE and new cancer incidence in patients after the first episode of idiopathic VTE. Methods: To conduct a nationwide population cohort study on VTE, we retrieved data from the Taiwan National Health Insurance Database from 1998 to 2008, including a 2-year follow-up period extending to the end of 2010. The occurrence of cancer in the cohort was also determined by accessing the Registry for Catastrophic Illness Patient Database. Results: A total of 45 242 patients had the newly diagnosed VTE from 1998 to 2008. The incidence of VTE increased with age. Among 28 243 idiopathic VTE patients, 1944 patients (6.89%) had a subsequent cancer diagnosis within 2 years of the first idiopathic VTE episode. The three most common newly diagnosed cancers after idiopathic VTE were lung cancer, liver cancer and colorectal cancer (18.3%, 12.3% and 10.9%, respectively). Male sex and advanced age are independent risk factors of having an underlying malignant disorder among patients diagnosed with idiopathic VTE. Conclusion: Patients with symptomatic VTE without an identifiable risk factor have a 6.89% incidence of subsequent cancer diagnosis in Taiwan. An extensive screening for an occult cancer in an idiopathic VTE patient may be warranted.

Published
2014
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25. Experimental investigations of the controlled explosive synthesis of ultrafine Al2O3

Author

J. Peng, Honghao Yan, R. Y. Li, and Xiaojie Li

Subjects
chemistry.chemical_compound, Fuel Technology, Materials science, chemistry, Chemical engineering, Explosive material, General Chemical Engineering, Phase (matter), Detonation, General Physics and Astronomy, Energy Engineering and Power Technology, General Chemistry, Polyethylene
Abstract

The relation between the parameters of mixed explosives [combinations of Al(NO3)3·9H2O powder, RDX powder, and/or polyethylene foaming particles] and the phase and dimension of ultrafine Al2O3 is studied in this paper. Experimental results indicate that mixed explosives with a high density of 1.8 g/cm3 are adapted to prepare high-temperature α-Al2O3. Ultrafine (α + γ)-Al2O3 with α-phase dominance is synthesized by the detonation of charges with a medium-high density of 1.3 g/cm3. Explosives with a medium-low density of 0.8 g/cm3 synthesize low-temperature pure λ-Al2O3.

Published
2013
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27. [Clinical analysis of cutaneous manifestations and related factors in patients with ulcerative colitis]

Author

Y, Tian, J X, Li, H H, Wang, R Y, Li, and X G, Liu

Subjects
Adult, Male, China, Erythema Nodosum, Crohn Disease, Humans, Psoriasis, Colitis, Ulcerative, Female, Middle Aged, Skin Diseases, Pyoderma Gangrenosum, Retrospective Studies
Abstract

To investigate the cutaneous manifestations in patients with ulcerative colitis (UC) and related factors.Patients admitted to Department of Gastroenterology Peking University First Hospital from January 1994 to December 2014 and diagnosed as UC were retrospectively enrolled in this study. Skin disorders were confirmed by the dermatologists. Clinical data were collected and compared between patients with and without cutaneous manifestations.Among the total 373 UC patients, there were 34 cases (9.1%) with cutaneous manifestations, including 11 pyoderma gangrenosum, 8 erythema nodosum, 6 eczema, 3 psoriasis, 2 pemphigus, 1 granulomatous cheilitis, 1 ichthyosis, 1 acne rosacea, and 1 impetigo. The skin manifestations may occur after the diagnosis, simultaneously or even before the diagnosis of UC, which were 24, 7 and 3 patients respectively. The mean age in patients with skin lesions was (47.2±12.1) years, male to female ratio 0.79∶1. More patients with skin manifestations had severe activity of UC compared with non-skin group [50.0%(17/34) vs 25.1%(85/339), P=0.01]. In addition, the proportion of extensive colitis in skin lesion group was significantly higher than that in non-skin group [76.5%(26/34) vs 54.6%(185/339), P=0.04].The cutaneous manifestations associated with UC are polymorphic, erythema nodosums and pyoderma gangrenosums are the most common skin lesions seen in UC patients. Skin lesions occur concurrently, pre or post the diagnosis of UC. Skin lesions in UC patients suggest more severe disease activity. Clinicians need to pay more attention to this group.

Published
2016

28. Measurement of J/ψ decays into ΛbarLambda π + π −

Author

Han-Qing Zheng, H. M. Hu, S. X. Du, G. S. Varner, F. Lu, J. G. Lu, J. C. Li, T. Hu, J. Chen, B. J. Liu, Yudan Wang, XZ（蔡翔舟） Cai, G. F. Xu, S. Jin, G. R. Lu, X. S. Jiang, X. Q. Li, Z. A. Zhu, C. Z. Yuan, Lianyou Shan, Fang Liu, P. L. Wang, Qian Liu, Z. G. Zhao, W. D. Li, Xichao Ruan, C. P. Shen, P. P. Zhao, Guangshun Huang, Z. J. Sun, P. Wang, B. Y. Zhang, H. Y. Sheng, Mingming Yang, Y. X. Ye, Z. J. Guo, H. B. Li, C. X. Yu, X. H. Mo, L. S. Wang, C. C. Zhang, Y. Xu, B. Zhong, B. Zheng, R. G. Ping, W. G. Li, X. T. Huang, F. A. Harris, Z. A. Liu, Xinglong Li, T. Hussain, J. W. Zhao, X. Y. Shen, G. Rong, X. Wan, L. L. Wang, Y. Ban, Yanping Huang, M. He, F. C. Ma, H. M. Liu, C. X. Liu, J. Z. Bai, Y. T. Gu, S. L. Olsen, Q. M. Ma, J. B. Jiao, H. B. Liu, H. X. Yang, Y.Y. Zhang, H. L. Ma, J. F. Qiu, S. S. Sun, Y. Yuan, Y. S. Zhu, J. P. Liu, D. H. Wei, Y. X. Yang, M. H. Ye, Y. Z. Sun, Liangbin Li, X. Y. Zhang, R. G. Liu, Shang Lunlin, G. Li, R. Y. Li, Y. N. Gao, Cunfeng Wei, J. W. Zhang, J. P. Tian, C. D. Fu, Z. Y. Deng, Xingguo Li, B.S. Zou, N. Wu, H. Q. Zhang, Z. P. Zhang, Zujian Wang, Y. P. Chu, X. P. Xu, X. B. Ji, K. J. Zhu, Y. Zeng, Q. M. Zhu, Y. B. Chen, Xiaobo Zhu, H. F. Chen, Z. Y. Wang, J. Nie, L. P. Zhou, Y. S. Dai, Z. P. Mao, Jinxing Zheng, Z. P. Zheng, M. Q. A. Malik, J. C. Chen, Feng Liu, X. L. Luo, M. Ablikim, H. S. Chen, J. Fang, M. L. Yan, X. Tang, M. G. Zhao, Y. F. Liang, D. P. Jin, H. Y. Zhang, D. H. Zhang, J. Y. Zhang, Y. Bai, Y. K. Heng, B. X. Zhang, and K. L. He

Subjects
Physics, Nuclear and High Energy Physics, Angular distribution, Branching fraction, Analytical chemistry, Pi, Sigma, High Energy Physics::Experiment, Astronomy and Astrophysics, Astrophysics::Earth and Planetary Astrophysics, Statistical physics, Lambda, Instrumentation
Abstract

Based on 58 million J/psi events collected by the BES II detector at the BEPC, J/psi -> Lambda(Lambda) over bar pi(+)pi(-) is observed for the first time. The branching fraction is measured to be Br(J/psi -> Lambda(Lambda) over bar pi(+)pi(-)) = (4.30 +/- 0.13 +/- 0.99)x10(-3), excluding the decays to intermediate states, namely J/psi -> Xi(-)(Xi) over bar (+), J/psi -> Sigma(1385)(-)(Sigma) over bar (1385)(+), and J/psi -> Sigma(1385)(+)(Sigma) over bar (1385)(-). The branching fractions for these intermediate resonance channels are measured to be: Br(J/psi -> Xi(-)(Xi) over bar (+)) = (0.90 +/- 0.03 +/- 0.18) x 10(-3), Br(J/psi -> Sigma(1385)(-)(Sigma) over bar (1385)(+)) = (1.23 +/- 0.07 +/- 0.30) x 10(-3), and Br(J/psi -> Sigma(1385)(+)(Sigma) over bar (1385)(-)) = (1.50 +/- 0.08 +/- 0.38) x 10(-3), respectively. The angular distribution is of the form dN/d(cos theta) proportional to (1+ alpha cos(2)theta) with alpha = (0.35 +/- 0.29 +/- 0.06) for J/psi -> Xi(-)(Xi) over bar (+), alpha = (-0.54 +/- 0.22 +/- 0.10) for J/psi -> Sigma(1385)(-)(Sigma) over bar (1385)(+), and alpha = (-0.35 +/- 0.25 +/- 0.06) for J/psi -> Sigma(1385)(+)(Sigma) over bar (1385)(-).

Published
2012
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29. First evidence of ψ(2 S ) → Ω − +

Author

M. Ablikim, J. Z. Bai, Y. Bai, Y. Ban, X. Cai, H. F. Chen, H. S. Chen, J. C. Chen, J. Chen, Y. B. Chen, Y. P. Chu, Y. S. Dai, Z. Y. Deng, S. X. Du, J. Fang, C. D. Fu, Y. Gao, Y. T. Gu, Z. J. Guo, F. A. Harris, K. L. He, M. He, Y. K. Heng, H. M. Hu, T. Hussain, T. Hu, G. S. Huang, X. T. Huang, Y. P. Huang, X. B. Ji, X. S. Jiang, J. B. Jiao, D. P. Jin, S. Jin, G. Li, H. B. Li, J. Li, L. Li, R. Y. Li, W. D. Li, W. G. Li, X. L. Li, X. N. Li, X. Q. Li, Y. F. Liang, B. J. Liu, C. X. Liu, Fang Liu, Feng Liu, H. B. Liu, H. M. Liu, J. P. Liu, Q. Liu, R. G. Liu, Z. A. Liu, F. Lu, G. R. Lu, J. G. Lu, X. L. Luo, F. C. Ma, H. L. Ma, Q. M. Ma, M. Q. A. Malik, Z. P. Mao, X. H. Mo, J. Nie, S. L. Olsen, R. G. Ping, J. F. Qiu, G. Rong, X. D. Ruan, L. Y. Shan, L. Shang, C. P. Shen, X. Y. Shen, H. Y. Sheng, S. S. Sun, Y. Z. Sun, Z. J. Sun, X. Tang, J. P. Tian, G. S. Varner, X. Wan, L. Wang, L. L. Wang, L. S. Wang, P. Wang, P. L. Wang, Y. F. Wang, Z. Wang, Z. Y. Wang, C. L. Wei, D. H. Wei, N. Wu, G. F. Xu, X. P. Xu, Y. Xu, M. L. Yan, H. X. Yang, M. Yang, Y. X. Yang, M. H. Ye, Y. X. Ye, C. X. Yu, C. Z. Yuan, Y. Yuan, Y. Zeng, B. X. Zhang, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. Q. Zhang, H. Y. Zhang, J. W. Zhang, J. Y. Zhang, X. Y. Zhang, Y. Y. Zhang, Z. P. Zhang, J. W. Zhao, M. G. Zhao, P. P. Zhao, Z. G. Zhao, B. Zheng, H. Q. Zheng, J. P. Zheng, Z. P. Zheng, B. Zhong, L. Zhou, K. J. Zhu, Q. M. Zhu, X. W. Zhu, Y. S. Zhu, Z. A. Zhu, and B. S. Zou

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Positron, Branching fraction, law, High Energy Physics::Experiment, Astronomy and Astrophysics, Collider, Instrumentation, Omega, Bar (unit), law.invention
Abstract

The decay psi(2S) -> Omega(-)(Omega) over bar (+) is analyzed using 14 x 10(6) psi(2S) events recorded by the Beijing Spectrometer II (BES II) at the Beijing Electron Positron Collider (BEPC). Based upon events with no missing charged tracks and a satisfactory four-constraint kinematic fit, we determine the upper limit for the branching fraction of psi(2S) -> Omega(-)(Omega) over bar (+) to be 1.5 x 10(-4) at a 90% confidence level. By including events with one missing charged track, we are able to report the first evidence of an Omega(-)(Omega) over bar (+) signal with a statistical significance of 3.1 sigma. The branching fraction of psi(2S) -> Omega(-)(Omega) over bar (+) is determined to be (4.80 +/- 1.56(stat)+/- 1.30(sys)) x 10(-5).

Published
2012
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30. Small nucleolar RNA 42 acts as an oncogene in lung tumorigenesis

Author

J. P. Liao, Yuping Mei, Feng Jiang, J. Y. Wang, Ruth L. Katz, Lan Liu, Susan G. Dorsey, L. Yu, L. Ji, Bolin Liu, R. Y. Li, Z. R. Jiang, and J. Shen

Subjects
Male, p53, Cancer Research, Lung Neoplasms, Apoptosis, medicine.disease_cause, Molecular oncology, Immunoenzyme Techniques, Mice, 0302 clinical medicine, Carcinoma, Non-Small-Cell Lung, RNA, Small Interfering, Cells, Cultured, In Situ Hybridization, Fluorescence, 0303 health sciences, Gene knockdown, Reverse Transcriptase Polymerase Chain Reaction, small nucleolar RNA, Cell cycle, Prognosis, 3. Good health, Gene Expression Regulation, Neoplastic, Survival Rate, Blotting, Southern, Cell Transformation, Neoplastic, 030220 oncology & carcinogenesis, Female, Blotting, Western, Mice, Nude, Bronchi, Adenocarcinoma, Biology, Real-Time Polymerase Chain Reaction, Article, 03 medical and health sciences, Genetics, medicine, Animals, Humans, RNA, Small Nucleolar, RNA, Messenger, Lung cancer, Molecular Biology, Cell Proliferation, 030304 developmental biology, bio-markers, Oncogene, Cancer, Oncogenes, Blotting, Northern, medicine.disease, Molecular biology, respiratory tract diseases, tumorigenesis, Cancer cell, Carcinogenesis, Follow-Up Studies
Abstract

Non-small cell lung cancer (NSCLC) is the leading cause of cancer death, reflecting the need for better understanding the oncogenesis, and developing new diagnostic and therapeutic targets for the malignancy. Emerging evidence suggests that small nucleolar RNAs (snoRNAs) have malfunctioning roles in tumorigenesis. Our recent study demonstrated that small nucleolar RNA 42 (SNORA42) was overexpressed in lung tumors. Here, we investigate the role of SNORA42 in tumorigenesis of NSCLC. We simultaneously assess genomic dosages and expression levels of SNORA42 and its host gene, KIAA0907, in 10 NSCLC cell lines and a human bronchial epithelial cell line. We then determine in vitro functional significance of SNORA42 in lung cancer cell lines through gain- and loss-of-function analyses. We also inoculate cancer cells with SNORA42-siRNA into mice through either tail vein or subcutaneous injection. We finally evaluate expression level of SNORA42 on frozen surgically resected lung tumor tissues of 64 patients with stage I NSCLC by using quantitative reverse transcriptase PCR assay. Genomic amplification and associated high expression of SNORA42 rather than KIAA0907 are frequently observed in lung cancer cells, suggesting that SNORA42 overexpression is activated by its genomic amplification. SNORA42 knockdown in NSCLC cells inhibits in vitro and in vivo tumorigenicity, whereas enforced SNORA42 expression in bronchial epitheliums increases cell growth and colony formation. Such pleiotropy of SNORA42 suppression could be achieved at least partially through increased apoptosis of NSCLC cells in a p53-dependent manner. SNORA42 expression in lung tumor tissue specimens is inversely correlated with survival of NSCLC patients. Therefore, SNORA42 activation could have an oncogenic role in lung tumorigenesis and provide potential diagnostic and therapeutic targets for the malignancy.

Published
2011
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31. Observation of charged κ in J/ψ→K⁎(892)∓KSπ±, K⁎(892)∓→KSπ∓ at BESII

Author

F. C. Ma, T. Matsuda, J. F. Qiu, Z. A. Liu, Y. Ban, Z. G. Zhao, X. H. Mo, L. S. Wang, J. W. Zhao, M. H. Ye, Z. J. Sun, J. Z. Bai, L. L. Wang, Tsuneaki Tsuru, I. Yamauchi, R. Y. Li, Cunfeng Wei, X. Y. Shen, Xichao Ruan, P. Wang, Shang Lunlin, G. Li, J. W. Zhang, W. D. Li, H. B. Li, C. L. Luo, Y. T. Gu, H. Y. Sheng, C. D. Fu, C. C. Zhang, J. C. Chen, Q. M. Ma, B. Zhong, B. J. Liu, Yudan Wang, Y. Zeng, Z. Y. Deng, J. Fang, P. L. Wang, C. X. Yu, M. He, J. P. Tian, H. Y. Zhang, Y. Yuan, Y. S. Zhu, Xiaobo Zhu, G. R. Lu, Yanping Huang, D. H. Wei, Xingguo Li, C. X. Liu, B. Zheng, R. G. Ping, J. Y. Zhang, J. C. Li, Z.J. Guo, Y. B. Chen, F. Lu, Z. A. Zhu, Shin-ichi Kurokawa, H. F. Chen, F. A. Harris, Y. K. Heng, K. Ukai, H. B. Liu, Z. Y. Wang, C. P. Shen, P. P. Zhao, Han-Qing Zheng, Y. Toi, G. F. Xu, Shin Ishida, Y.Y. Zhang, M. G. Zhao, X. Q. Li, S. Jin, B. X. Zhang, S. S. Sun, Liangbin Li, X. Y. Zhang, R. G. Liu, X. T. Huang, H. M. Hu, G. Rong, X. Wan, Qian Liu, Muneyuki Ishida, Y. P. Chu, X. P. Xu, X. B. Ji, W. G. Li, C. Z. Yuan, G. S. Huang, Kunio Takamatsu, Fang Liu, N. Wu, H. M. Liu, Z. P. Zheng, K. J. Zhu, G. S. Varner, B. Y. Zhang, H. X. Yang, Feng Liu, M. Ablikim, J. P. Liu, Mingming Yang, J. B. Jiao, Y. X. Ye, X. S. Jiang, Y. Xu, Xinglong Li, J. G. Lu, T. Hu, XZ（蔡翔舟） Cai, Lianyou Shan, T. Maeda, K. L. He, H. S. Chen, X. Tang, Y. Bai, Y. N. Gao, B.S. Zou, M. Oda, S. X. Du, M. L. Yan, H. Q. Zhang, Z. P. Zhang, Zujian Wang, K. Yamada, H. L. Ma, Jin Chen, Y. X. Yang, Y. Z. Sun, J. Nie, Y. S. Dai, Jinxing Zheng, Toshihiko Komada, Q. M. Zhu, Y. F. Liang, D. P. Jin, H. S. Sun, D. H. Zhang, L. P. Zhou, Z. P. Mao, and S.L. Olsen

Subjects
Physics, Nuclear and High Energy Physics, Atomic physics
Abstract

Using 58 million J / ψ decays obtained by BESII, a charged κ particle is observed in the analysis of the K S π ± system recoiling against K ⁎ ( 892 ) ∓ selected in J / ψ → K S K S π + π − . The mass and width values of the charged κ are obtained to be ( 826 ± 49 − 34 + 49 ) MeV / c 2 and ( 449 ± 156 − 81 + 144 ) MeV / c 2 for the Breit–Wigner parameters, and the pole position is determined to be ( 764 ± 63 − 54 + 71 ) − i ( 306 ± 149 − 85 + 143 ) MeV / c 2 . They are in good agreement with those of the neutral κ observed by the BES Collaboration.

Published
2011
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32. A study of charged κ in J/ψ→K±KSπ∓π0

Author

Xichao Ruan, H. Y. Sheng, L. P. Zhou, C. X. Yu, Z. P. Mao, N. D. Qi, B. Zheng, R. G. Ping, R. Y. Li, Han-Qing Zheng, Qian Liu, H. M. Hu, P. L. Wang, Cunfeng Wei, Y. Xu, W. G. Li, S.L. Olsen, Y. N. Guo, Xinglong Li, X. Tang, J. W. Zhang, J. G. Lu, J. C. Li, J. B. Jiao, W. D. Li, F. A. Harris, F. Lu, T. Hu, XZ（蔡翔舟） Cai, H. M. Liu, Z. P. Zheng, X. D. Chen, S. D. Gu, J. W. Zhao, X. L. Li, S. Liu, H. B. Liu, M. He, F. C. Ma, H. L. Ma, J. P. Tian, Y. Bai, Shang Lunlin, G. Li, Lianyou Shan, Feng Liu, G. L. Tong, H. B. Li, M. Ablikim, B. A. Zhuang, Z.J. Guo, Y.Y. Zhang, C. L. Luo, C. X. Liu, G. S. Varner, J. F. Qiu, C. D. Fu, C. C. Zhang, L. S. Wang, B. Zhong, C. Z. Yuan, Z. A. Liu, M. G. Zhao, Z.L. Zhu, S. S. Sun, Q. M. Ma, Yanping Huang, Z. Y. Deng, J. P. Liu, H. Y. Zhang, S. X. Du, M. L. Yan, Y. Ban, Y. X. Yang, Y. Yuan, J. Y. Zhang, Y. S. Zhu, N. Wu, Z. G. Zhao, P. Wang, P. P. Zhao, Y. K. Heng, Z. J. Sun, X. M. Xia, B. X. Zhang, X. Y. Shen, Y. T. Gu, Y. Z. Sun, X. T. Huang, J. C. Chen, G. Rong, X. Wan, J. Z. Bai, H. X. Yang, Fang Liu, J. Fang, Y. P. Chu, K. L. He, Liangbin Li, X. Y. Zhang, Q. M. Zhu, Xiaobo Zhu, B. J. Liu, R. G. Liu, Yudan Wang, X. P. Xu, X. B. Ji, H. Q. Zhang, Z. X. Zhang, G. R. Lu, D. X. Zhao, B. Y. Zhang, Z. A. Zhu, Jin Chen, Z. P. Zhang, D. H. Wei, Y. N. Gao, H. S. Sun, Z. Y. Wang, G. F. Xu, K. J. Zhu, Zujian Wang, S. Jin, C. P. Shen, H. S. Chen, Huirun Chen, J. Nie, Y. S. Dai, C. S. Gao, Jinxing Zheng, F. Zhang, B.S. Zou, X. H. Mo, M. H. Ye, L. L. Wang, G. S. Huang, Y. Zeng, Y. B. Chen, H. F. Chen, X. S. Jiang, M. Q. A. Malik, Mingming Yang, Y. X. Ye, Y. F. Liang, D. P. Jin, D. H. Zhang, and X. Q. Li

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Meson, Branching fraction, Partial wave analysis, Analytical chemistry, Pi, Resonance, Dalitz plot, Invariant mass, Kappa
Abstract

Based on 58 x 10(6) J/psi events collected by BESII, the decay J/psi -> (KKS)-K-+/-pi(-/+)pi(0) is studied. In the invariant mass spectrum recoiling against the charged K*(892)(+/-), the charged kappa particle is found as a low mass enhancement. If a Breit-Wigner function of constant width is used to parameterize the kappa, its pole locates at (849 +/- 77(-14)(+18)) - i(256 +/- 40(-22)(+46)) MeV/c(2). Also in this channel, the decay J/psi -> K*(892)K+*(892)- is observed for the first time. Its branching ratio is (1.00 +/- 0.19(-0.32)(+0.11)) x 10(-3). (C) 2010 Elsevier B.V. All rights reserved.

Published
2010
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33. Measurement of the branching fractions for J/ψ→pp¯η and pp¯η′

Author

Y. T. Gu, K. L. He, D. H. Wei, Xiaobo Zhu, H. Y. Zhang, P. Wang, J. P. Liu, Z. P. Zheng, R. Y. Li, Cunfeng Wei, J. W. Zhang, G. S. Huang, J. G. Lu, Z. Y. Wang, J. Y. Zhang, J. P. Tian, Feng Liu, G. L. Tong, T. Hu, XZ（蔡翔舟） Cai, Z.J. Guo, H. B. Liu, J. Nie, M. Ablikim, B. A. Zhuang, Y.Y. Zhang, K. J. Zhu, P. P. Zhao, X. Q. Li, X. L. Li, G. F. Xu, S. S. Sun, Y. S. Dai, C. S. Gao, Jinxing Zheng, X. D. Chen, X. Y. Shen, S. Jin, Y. K. Heng, H. X. Yang, X. S. Jiang, N. Wu, Shang Lunlin, X. T. Huang, Q. M. Zhu, Lianyou Shan, F. Lu, G. Li, G. Rong, X. Wan, B. J. Liu, Yudan Wang, Y. N. Gao, G. R. Lu, C. D. Fu, H. S. Sun, X. N. Li, S. Liu, M. Q. A. Malik, Z. Y. Deng, Z. A. Zhu, Fang Liu, H. S. Chen, Qian Liu, J. C. Chen, D. X. Zhao, Han-Qing Zheng, B. Y. Zhang, Q. M. Ma, C. Z. Yuan, C. P. Shen, J. Fang, H. M. Hu, Y. F. Liang, Jin Chen, X. M. Xia, S.L. Olsen, Y. Xu, Y. Yuan, Y. S. Zhu, D. P. Jin, S. D. Gu, L. S. Wang, D. H. Zhang, M. G. Zhao, Y. P. Chu, X. P. Xu, X. B. Ji, G. S. Varner, W. G. Li, H. L. Ma, H. Q. Zhang, Y. Zeng, M. He, L. P. Zhou, Z. P. Mao, Y. X. Yang, C. X. Liu, Z. P. Zhang, H. M. Liu, Y. Z. Sun, Zujian Wang, Z. X. Zhang, Y. B. Chen, H. F. Chen, W. D. Li, B.S. Zou, Mingming Yang, P. L. Wang, Y. X. Ye, F. A. Harris, J. W. Zhao, F. C. Ma, J. F. Qiu, Z.L. Zhu, Z. A. Liu, Y. Ban, J. Z. Bai, Xichao Ruan, H. Y. Sheng, C. X. Yu, N. D. Qi, B. Zheng, R. G. Ping, J. B. Jiao, J. C. Li, Z. G. Zhao, Yu Bai, Z. J. Sun, H. B. Li, C. L. Luo, C. C. Zhang, B. Zhong, Yanping Huang, Liangbin Li, X. Y. Zhang, R. G. Liu, B. X. Zhang, Huirun Chen, X. H. Mo, M. H. Ye, L. L. Wang, S. X. Du, M. L. Yan, X. Tang, and Y. N. Guo

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Electron–positron annihilation, Analytical chemistry, Physics::Accelerator Physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract

Using 58 x 10(6) J/psi events collected with the Beijing Spectrometer (BESII) at the Beijing Electron Positron Collider (BEPC), the branching fractions of J/psi to p (p) over bar eta and p (p) over bar eta' are determined. The ratio Gamma(J/psi -> p (p) over bar eta/Gamma(J/psi -> p (p) over bar obtained by this analysis agrees with expectations based on soft-pion theorem calculations. (C) 2009 Published by Elsevier B.V.

Published
2009
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34. R value measurements for e+e− annihilation at 2.60, 3.07 and 3.65 GeV

Author

H. Y. Zhang, R. Y. Li, Haiwen Liu, G. S. Huang, Cunfeng Wei, J. W. Zhang, J. Y. Zhang, B. J. Liu, Yudan Wang, Xiaobo Zhu, Gongru Lu, Z. A. Zhu, Y. K. Heng, Z. P. Zheng, Feng Liu, P. Wang, G. L. Tong, B. A. Zhuang, Chunxu Yu, P. P. Zhao, J. G. Lu, N. Wu, H. X. Yang, Z. Y. Wang, C. P. Shen, H. B. Li, L. P. Zhou, R. G. Liu, K. J. Zhu, S. X. Du, M. L. Yan, Z. P. Mao, Y. X. Yang, H. B. Liu, J. Nie, M. Ablikim, J. P. Liu, Y.Y. Zhang, W. D. Li, T. Hu, G. Rong, X. Wan, L. S. Wang, M. G. Zhao, C. L. Luo, J. P. Tian, P. L. Wang, XZ（蔡翔舟） Cai, Zhengguo Zhao, S. S. Sun, X. L. Li, Z. A. Liu, X. S. Jiang, Y. S. Dai, Zhenyu Zhang, Z.J. Guo, X. Tang, C. S. Gao, Xuan Zhang, Jinxing Zheng, F. Lu, C. C. Zhang, B. Zhong, Lei Li, W. G. Li, S.L. Olsen, Y. Ban, X. Y. Shen, J. B. Jiao, Qian Liu, Junhui Hu, J. W. Zhao, Lianyou Shan, Y. Z. Sun, F. A. Harris, J. C. Chen, Y. P. Chu, H. M. Hu, X. P. Xu, X. B. Ji, F. C. Ma, J. Z. Bai, Yin Xu, J. Fang, X. Q. Li, Z. X. Zhang, Yanping Huang, S. D. Gu, C. Z. Yuan, Y. Weng, J. F. Qiu, Yi Jin, Y.N. Gao, Z.L. Zhu, M. Q. A. Malik, Q. M. Ma, X. D. Chen, H. Y. Sheng, Shang Lunlin, N. D. Qi, G. Li, Y. N. Guo, H. L. Ma, Xifeng Ruan, Fang Liu, B. Zheng, R. G. Ping, H.Q. Zheng, Y. Q. Guo, C. D. Fu, Y. Yuan, Y. S. Zhu, G. S. Varner, D. X. Zhao, B. Y. Zhang, Hangxu Li, Z. Y. Deng, Y. B. Chen, Mingming Yang, Y. F. Liang, Y. X. Ye, H. F. Chen, D. P. Jin, D. H. Zhang, Yu Bai, Z. J. Sun, Q. M. Zhu, Xingtao Huang, H. S. Sun, X. N. Li, Jin Chen, J. C. Li, M. He, Y. Zeng, C. X. Liu, H. S. Chen, X. M. Xia, K. L. He, G. F. Xu, S. Jin, B. X. Zhang, Huirun Chen, X. H. Mo, M. H. Ye, L. L. Wang, Y. T. Gu, D. H. Wei, S. Liu, B.S. Zou, H. Q. Zhang, and Zujian Wang

Subjects
Coupling constant, Physics, Nuclear physics, Systematic error, Nuclear and High Energy Physics, Particle physics, Annihilation, Luminosity (scattering theory), Electron–positron annihilation, Strong interaction, Hadron, R-value (insulation)
Abstract

Using a data sample with a total integrated luminosity of 10.0 pb −1 collected at center-of-mass energies of 2.6, 3.07 and 3.65 GeV with BESII, cross sections for e + e − annihilation into hadronic final states ( R values) are measured with statistical errors that are smaller than 1%, and systematic errors that are about 3.5 % . The running strong interaction coupling constants α s ( 3 ) ( s ) and α s ( 5 ) ( M Z 2 ) are determined from the R values.

Published
2009
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35. RECENT RESULTS FROM BESII J/ψ DECAYS

Author

M. He, D. L. Shen, H. X. Yang, J. P. Liu, C. X. Liu, L. S. Wang, M. G. Zhao, J. P. Tian, W. G. Li, Han-Qing Zheng, Z.J. Guo, Qian Liu, Q. M. Ma, H. H. Liu, J. C. Li, B. X. Zhang, H. M. Hu, P. P. Zhao, H. M. Liu, P. Wang, X. M. Xia, Y. Yuan, Y. S. Zhu, Y. X. Yang, X. Y. Shen, L. L. Ma, Z. A. Liu, F. C. Ma, K. J. Zhu, J. Nie, J. C. Chen, X. Q. Li, X. T. Huang, M. Q. A. Malik, Y. Z. Sun, G. Rong, X. Wan, F. Lu, G. F. Xu, X. Tang, B. J. Liu, Yudan Wang, S. D. Gu, J. Fang, S. Jin, H. Y. Zhang, H. Qin, W. D. Li, Y. Ban, Z. P. Zheng, G. R. Lu, G. S. Huang, R. Y. Li, Z. A. Zhu, Y. S. Dai, C. S. Gao, J. Y. Zhang, Y. P. Chu, Z. X. Zhang, S. L. Zang, G. S. Varner, Cunfeng Wei, Jin Chen, J. F. Qiu, X. P. Xu, X. B. Ji, Xiaobo Zhu, Y. K. Heng, J. W. Zhao, Feng Liu, G. L. Tong, J. W. Zhang, Jinxing Zheng, C. P. Shen, Z.L. Zhu, C. Z. Yuan, G. W. Yu, X. Y. Zhang, Y. Weng, M. Ablikim, B. A. Zhuang, Huirun Chen, N. Wu, Y. N. Gao, S.L. Olsen, Z. G. Zhao, R. G. Liu, Y. F. Liang, X. D. Chen, J. B. Liu, D. P. Jin, Yu Bai, Z. J. Sun, X. H. Mo, D. H. Zhang, M. H. Ye, J. B. Jiao, Z. Y. Wang, Shang Lunlin, L. L. Wang, X. X. Xie, L. P. Zhou, Z. P. Mao, H. B. Li, C. L. Luo, Y. T. Gu, H. L. Ma, Y. C. Zhu, D. H. Wei, C. C. Zhang, B. Zhong, P. L. Wang, Z. Y. Deng, S. X. Du, F. A. Harris, M. L. Yan, Yanping Huang, Q. M. Zhu, H. S. Sun, X. N. Li, Y. N. Guo, H. S. Chen, Y. Zeng, J. G. Lu, T. Hu, XZ（蔡翔舟） Cai, X. L. Li, Lianyou Shan, Y. B. Chen, Y. Xu, Y. F. Lai, H. F. Chen, W. F. Wang, K. L. He, J. Z. Bai, Xichao Ruan, H. Y. Sheng, C. X. Yu, N. D. Qi, R. G. Ping, H. B. Liu, Y.Y. Zhang, S. S. Sun, J. Hou, Fang Liu, D. X. Zhao, C.D. Fu, B. Y. Zhang, X. S. Jiang, B.S. Zou, H. Q. Zhang, Hongbo Liao, Z. P. Zhang, Zujian Wang, Mingming Yang, Y. X. Ye, and S. Liu

Subjects
Physics, Baryon, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Excited state, High Energy Physics::Phenomenology, High Energy Physics::Experiment, Astronomy and Astrophysics, Lambda, Omega, Atomic and Molecular Physics, and Optics, Bar (unit)
Abstract

In this representation, some recent results from BESII J/psi decays have been represented, including the analysis of J/psi -> omega p (p) over bar which is helpful to understand the threshold enhancement structure founded in J/psi -> gamma p (p) over bar is from pure final states interference(FSI) or not and the analysis of J/psi -> pK (Lambda) over bar the enhancement based on it some discussion will be hold if the structure is same one as the baryon excited states N* found in J/psi -> p (p) over bar pi(0).

Published
2009
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36. Measurements of the observed cross sections for e+e−→ exclusive light hadrons containing π0π0 at s=3.773, 3.650 and 3.6648 GeV

Author

Huirun Chen, L. L. Ma, J. Hou, Fang Liu, W. G. Li, S. D. Gu, G. F. Xu, S. Jin, J. G. Lu, Z. A. Liu, R. Y. Li, Y. Ban, Cunfeng Wei, T. Hu, X. H. Mo, L. S. Wang, D. X. Zhao, C.D. Fu, B. Y. Zhang, XZ（蔡翔舟） Cai, K. J. Zhu, J. Nie, H. L. Ma, J. W. Zhang, X. L. Li, J. B. Jiao, W. D. Li, M. H. Ye, M. G. Zhao, X. D. Chen, J. Z. Bai, P. Wang, X. Y. Shen, H. M. Liu, L. L. Wang, Shang Lunlin, S. X. Du, X. M. Xia, Lianyou Shan, J. P. Tian, M. L. Yan, Y. S. Dai, H. B. Liu, S. Liu, B. J. Liu, Yudan Wang, H. H. Liu, Y.Y. Zhang, C. S. Gao, G. R. Lu, Jinxing Zheng, H. S. Chen, Z. Y. Deng, J. C. Li, J. C. Chen, P. P. Zhao, J. W. Zhao, S. S. Sun, M. He, Z. A. Zhu, Xichao Ruan, Q. M. Ma, G. W. Yu, D. L. Shen, X. T. Huang, J. Fang, G. Rong, X. Wan, Xiaobo Zhu, B. X. Zhang, F. Lu, H. Y. Zhang, Q. M. Zhu, Han-Qing Zheng, H. Y. Sheng, C. X. Liu, Y. Yuan, Y. S. Zhu, G. S. Huang, Y. Xu, S. L. Zang, Y. N. Guo, J. Y. Zhang, C. X. Yu, Y. P. Chu, Y. X. Yang, N. D. Qi, X. P. Xu, X. B. Ji, Z. Y. Wang, H. S. Sun, H. M. Hu, X. N. Li, Y. K. Heng, B. Zheng, R. G. Ping, X. Tang, Y. T. Gu, Y. Zeng, J. P. Liu, L. P. Zhou, Z. P. Mao, H. X. Yang, Z. P. Zheng, H. Q. Zhang, Y. B. Chen, D. H. Wei, C. Z. Yuan, Y. Weng, K. L. He, Feng Liu, G. L. Tong, M. Ablikim, B. A. Zhuang, Y. F. Lai, H. F. Chen, W. F. Wang, Z. P. Zhang, Y. Z. Sun, N. Wu, F. C. Ma, Liangbin Li, X. Y. Zhang, Zujian Wang, R. G. Liu, J. B. Liu, Z. X. Zhang, J. F. Qiu, Z.L. Zhu, Y. C. Zhu, P. L. Wang, Yu Bai, Z. J. Sun, Y. N. Gao, B.S. Zou, H. B. Li, C. L. Luo, C. C. Zhang, B. Zhong, Yanping Huang, Y. F. Liang, D. P. Jin, D. H. Zhang, M. Q. A. Malik, Hongbo Liao, Mingming Yang, Y. X. Ye, X. S. Jiang, Jin Chen, X. X. Xie, X. Q. Li, and H. Qin

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Annihilation, Meson, Electron–positron annihilation, Hadron, Atomic physics
Abstract

By analyzing the data sets of 17.3 pb−1 taken at s = 3.773 GeV and of 6.5 pb−1 taken at s = 3.650 GeV with the BES-II detector at the BEPC collider, we measure the observed cross sections for the exclusive light hadron final states of K S 0 K − π + , K S 0 K − π + π 0 , K S 0 K − π + π + π − , K S 0 K − π + π + π − π 0 , K S 0 K − π + π + π + π − π − and K S 0 K − π + π 0 π 0 produced in e + e − annihilation at the two energy points. We set the upper limits on the observed cross sections and the branching fractions for ψ ( 3770 ) decay to these final states at 90% C.L.

Published
2008
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37. Measurements of the line shapes of DD¯ production and the ratio of the production rates of D+D− and D0D¯0 in e+e− annihilation at ψ(3770) resonance

Author

Q. M. Zhu, M. Z. Wang, Qiyang Zhang, H. S. Sun, H. Y. Zhang, Huirun Chen, Z. Z. Du, P. Wang, Haiping Peng, Jin Chen, J. Y. Zhang, S. S. Fang, Bo Xin, S. D. Gu, X. H. Mo, L. S. Wang, M. H. Ye, Y. X. Yang, Han-Qing Zheng, W. D. Li, H. M. Hu, Yi Jin, Fang Liu, Y. K. Heng, Q. M. Ma, Y.L. Li, F. Lu, Yingchun Zhu, Feng Shi, Zheng Wang, Shang Lunlin, H. Y. Sheng, Z. Q. Tan, Y. Yuan, Y. S. Zhu, G. Li, L. Y. Dong, D. X. Zhao, B. Y. Zhang, J. W. Zhao, Y. Z. Sun, X.L. Li, Z. Y. Yi, G. W. Yu, Hangxu Li, N. D. Qi, J. H. Liu, Yang Tian, C. D. Fu, Z. Y. Deng, J. Nie, J. C. Chen, Z. J. Sun, J. B. Jiao, B. X. Zhang, C. Z. Yuan, Jiming Yang, X. X. Xie, Y. S. Dai, L. L. Ma, H. B. Li, Zhe Wang, Z. A. Liu, C. S. Gao, W. R. Zhao, F. Liu, L. P. Zhou, S. X. Du, X. Y. Shen, J. Fang, C. L. Luo, Jinxing Zheng, Houbing Lu, Xunchao Zhang, Y. N. Gao, M. L. Yan, Y. P. Chu, X. B. Ji, C. C. Zhang, P. P. Zhao, Z. P. Zheng, Y. Ban, Yudan Wang, Y. T. Gu, G. R. Lu, Y. Xu, Z. P. Mao, Y. F. Liang, D. P. Jin, Xiru Huang, G. L. Tong, Xingzhu Cui, M. G. Zhao, X. Tang, M. Ablikim, B. A. Zhuang, H. L. Ma, S. M. Li, Fan Yang, D. H. Zhang, S. P. Chi, Jianwei Sun, Z. A. Zhu, Z. Y. Wang, H. H. Liu, J. C. Li, D. H. Wei, K. J. Zhu, S. S. Sun, J. M. Yuan, J. G. Lu, X. T. Huang, X. M. Xia, X. B. Ma, W. G. Li, X. S. Jiang, Xuai Zhuang, G. Rong, D. Y. Wang, T. Hu, XZ（蔡翔舟） Cai, Yu Zeng, X. Y. Zhang, R. G. Liu, J. B. Liu, H. M. Liu, M. He, D. L. Shen, C. X. Liu, J. G. Bian, H. X. Yang, Lianyou Shan, S. L. Zang, J. P. Liu, Yiyun Zhang, G. F. Xu, Z. Y. Ren, S. Jin, Y. X. Ye, H.B. Liao, R. Y. Li, Cunfeng Wei, Q. F. Dong, Ning Zhou, J. W. Zhang, J. Z. Bai, F. C. Ma, J. F. Qiu, Y. C. Zhu, P. L. Wang, X. Shi, H. S. Chen, X. Q. Li, Z. P. Zhang, Zujian Wang, K. L. He, H. Qin, B.S. Zou, Z.Q. Zhang, N. Wu, Y. Zeng, Y. Q. Guo, Y. B. Chen, Y. F. Lai, H. F. Chen, W. F. Wang, and Y. N. Guo

Subjects
Physics, Nuclear and High Energy Physics, Annihilation, Electron–positron annihilation, Hadron, Yield ratio, Resonance, Atomic physics, Line (formation)
Abstract

We report measurements of the line shapes of D + D − , D 0 D ¯ 0 and D D ¯ production as well as the line shape of the ratio of the production rates of D + D − and D 0 D ¯ 0 in e + e − annihilation at ψ ( 3770 ) resonance. We find that the line shapes of D + D − , D 0 D ¯ 0 and D D ¯ production are similar to an anomalous line shape of cross sections for e + e − → hadrons observed in the center-of-mass energy range from 3.70 to 3.87 GeV.

Published
2008
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38. Search for the rare decays J/ψ→Ds−π+, J/ψ→D−π+, and J/ψ→D¯0K¯0

Author

Dapeng Jin, H. S. Sun, J. H. Liu, J. W. Zhao, Y. F. Liang, W. R. Zhao, C. Z. Yuan, H. Y. Zhang, Q. F. Dong, M. G. Zhao, J. C. Chen, C. S. Gao, J. F. Qiu, G. F. Xu, Hui Liu, S. Jin, Shaojie Zhang, Z. G. Zhao, J. B. Liu, J. Hou, Y. S. Dai, T. Hu, Y. X. Yang, X. P. Xu, X. M. Xia, S. L. Zang, X. S. Jiang, J. Fang, J. Nie, Fang Liu, Y. P. Chu, C.D. Fu, H. X. Chen, Z.J. Guo, S.L. Olsen, Klaus Götzen, D. H. Zhang, X. X. Xie, M. Wang, D. L. Shen, Zhenyu Zhang, B. J. Liu, G. S. Huang, D. X. Zhao, K. J. Peters, K. L. He, Z. P. Zheng, X. D. Ruan, S. S. Fang, N. D. Qi, X. T. Huang, H. L. Ma, X. H. Mo, H. H. Liu, X. Y. Jiang, X. A. Zhuang, Y. K. Heng, Z. Wang, Y. Weng, M. L. Yan, Z. Y. Ren, D. H. Wei, Yin Xu, B. X. Zhang, R. G. Liu, L. Y. Diao, L. S. Wang, Jin Chen, F. A. Harris, Y. N. Guo, G. S. Varner, J. Li, S. S. Sun, Z. A. Zhu, X. Q. Li, C. P. Shen, M. He, G. L. Tong, Z. Y. Wang, S. M. Li, N. Wu, H.Q. Zheng, Y. B. Chen, H. Q. Zhang, Z. J. Sun, H. B. Liao, X. L. Li, Y. C. Lou, Y.N. Gao, J. G. Lu, Y. Zeng, H. S. Chen, L. L. Ma, F. C. Ma, Yongzhao Sun, H. M. Hu, C. L. Luo, S. D. Gu, Xiao Cai, Zheng Wang, G. R. Lu, L. Zhou, H. B. Li, S. X. Du, Y. C. Zhu, F. Liu, X. Tang, L. Z. Wang, Q. M. Zhu, G. Rong, J. Y. Zhang, M. H. Ye, H. F. Chen, W. F. Wang, Xiaomei Zhang, X. Y. Shen, Yiyun Zhang, J. B. Jiao, C. L. Wei, Y. X. Ye, X. B. Ji, L. Shang, J. P. Liu, Jian Liu, B. A. Zhuang, C. X. Liu, Y. Yuan, Q. M. Ma, P. Wang, Zhentao Zhang, R. G. Ping, W. D. Li, Z. A. Liu, G. Li, P. L. Wang, Y. Ban, Y. F. Wang, H. X. Yang, J. W. Zhang, Y. T. Gu, D. Y. Wang, G. W. Yu, Y. F. Lai, B. S. Zou, Xiao-yan Li, W. G. Li, M. Ablikim, R. Y. Li, L. L. Wang, Jun Hu, K. J. Zhu, J. Z. Bai, Z. P. Mao, H. Y. Sheng, F. Lu, P. P. Zhao, Zhang Bo, Qian Liu, H. Qin, L. Y. Shan, C. C. Zhang, J. P. Zheng, Z. Y. Deng, and Y. S. Zhu

Subjects
Physics, Nuclear and High Energy Physics, Electron–positron annihilation, Atomic physics
Abstract

Rare decay modes J / ψ → D s − π + + c.c. , J / ψ → D − π + + c.c. , and J / ψ → D ¯ 0 K ¯ 0 + c.c. are searched for using 5.77 × 10 7 J / ψ events collected with the BESII detector at the BEPC. No signal above background is observed. We present upper limits on the branching fractions of B ( J / ψ → D s − π + ) 1.3 × 10 −4 , B ( J / ψ → D − π + ) 7.5 × 10 −5 , and B ( J / ψ → D ¯ 0 K ¯ 0 ) 1.7 × 10 −4 at the 90% confidence level.

Published
2008
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39. Determination of the ψ(3770), ψ(4040), ψ(4160) and ψ(4415) resonance parameters

Author

B. J. Liu, S. S. Fang, Z. Wang, M. Wang, S. L. Zang, H. Y. Sheng, X. S. Jiang, J. Nie, G. F. Xu, C.D. Fu, H. X. Chen, Shaojie Zhang, J. P. Zheng, X. P. Xu, X. M. Xia, Y. P. Chu, P. P. Zhao, H. L. Ma, Y. Weng, H. Q. Zhang, Z. J. Sun, Y. Xu, Z. A. Zhu, Y. Zeng, R. G. Liu, H. Qin, N. Wu, Dapeng Jin, Z. P. Zhang, J. W. Zhao, J. P. Liu, H. M. Hu, Jian Liu, W. R. Zhao, Z. Y. Ren, Q. M. Ma, S. Jin, Y. N. Guo, C. Z. Yuan, H. Y. Zhang, Q. F. Dong, H. B. Liao, J. G. Lu, B. A. Zhuang, Zhang Bo, C. C. Zhang, C. X. Liu, Yongzhao Sun, Hui Liu, C. S. Gao, Y. Yuan, D. L. Shen, G. Rong, H. F. Chen, N. D. Qi, Z. G. Zhao, J. F. Qiu, W. F. Wang, D. H. Wei, L. L. Ma, Fang Liu, Qian Liu, L. Y. Shan, Z. Y. Wang, Z. Y. Deng, Zheng Wang, X. T. Huang, Z.J. Guo, K. L. He, X. D. Ruan, X. A. Zhuang, Y. S. Zhu, L. S. Wang, Y. F. Wang, X. H. Mo, Jin Chen, F. A. Harris, B. X. Zhang, Z. X. Zhang, Y. B. Chen, J. C. Chen, Y. F. Lai, J. Fang, J. Li, S. S. Sun, S. X. Du, H. X. Yang, J. H. Liu, G. R. Lu, L. Zhou, H. B. Li, Y. N. Gao, J. Y. Zhang, J. W. Zhang, C. L. Luo, G. W. Yu, D. H. Zhang, S.L. Olsen, Xiao Cai, J. Hou, X. B. Ji, Q. M. Zhu, G. S. Huang, Y. X. Yang, F. C. Ma, Y. K. Heng, X. Y. Jiang, B. S. Zou, X. Y. Shen, Xiao-yan Li, Y. S. Dai, H. S. Sun, Y. F. Liang, S. M. Li, M. H. Ye, M. G. Zhao, X. Q. Li, X. X. Xie, H. S. Chen, D. X. Zhao, X. Tang, Han-Qing Zheng, Y. C. Zhu, F. Liu, M. L. Yan, C. L. Wei, L. Shang, L. Y. Diao, T. Hu, J. B. Liu, G. S. Varner, X. L. Li, Y. C. Lou, L. Z. Wang, M. He, G. L. Tong, J. B. Jiao, Xiaomei Zhang, Yiyun Zhang, S. D. Gu, Y. X. Ye, M. Ablikim, R. Y. Li, L. L. Wang, Jun Hu, K. J. Zhu, P. Wang, D. Y. Wang, W. G. Li, Z. P. Zheng, H. H. Liu, C. P. Shen, Z. A. Liu, G. Li, P. L. Wang, Y. Ban, Y. T. Gu, R. G. Ping, F. Lu, W. D. Li, J. Z. Bai, and Z. P. Mao

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Electron–positron annihilation, Radiative transfer, High mass, Resonance, High Energy Physics::Experiment, Electron
Abstract

R values measured with the BESII detector at center-of-mass energies between 3.7 and 5.0 GeV are fitted to determine resonance parameters (mass, total width, electron width) of the high mass charmonium states, ψ ( 3770 ) , ψ ( 4040 ) , ψ ( 4160 ) and ψ ( 4415 ) . Various effects, including the interferences and relative phases between the resonances, the energy-dependence of the full widths, and the initial state radiative correction, are examined. The results are compared to previous studies.

Published
2008
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40. First observation of J/ψ and ψ(2S) decaying to nKS0Λ¯+c.c

Author

X. P. Xu, H. Y. Sheng, X. M. Xia, C. C. Zhang, Y. P. Chu, C. L. Luo, Xiao Cai, Z. Y. Deng, P. P. Zhao, H. Qin, Y. S. Zhu, C. S. Gao, Z. Y. Wang, J. F. Qiu, T. Hu, X. X. Xie, Y. X. Yang, S. Jin, H. Q. Zhang, Z. J. Sun, Y. C. Zhu, F. Liu, H. L. Ma, Klaus Götzen, J. Z. Bai, Y. Zeng, Y. Weng, Dapeng Jin, Z. P. Zhang, Zhang Bo, Shaojie Zhang, J. P. Zheng, D. X. Zhao, K. J. Peters, H. X. Yang, J. W. Zhang, M. Ablikim, G. W. Yu, Z. Y. Ren, X. A. Zhuang, M. Wang, M. L. Yan, L. Y. Diao, M. He, G. L. Tong, Y. Xu, Z. A. Zhu, X. Y. Jiang, R. Y. Li, J. Fang, B. S. Zou, Z. P. Zheng, H. B. Liao, Xiao-yan Li, L. Z. Wang, Xiaomei Zhang, Y. N. Guo, Yiyun Zhang, N. Wu, X. L. Li, H. H. Liu, Y. C. Lou, J. G. Lu, S. D. Gu, Jin Chen, F. A. Harris, J. P. Liu, Z. P. Mao, Z. G. Zhao, X. H. Mo, B. X. Zhang, Z. X. Zhang, Jian Liu, Yongzhao Sun, J. Hou, Y. X. Ye, L. L. Ma, L. L. Wang, D. L. Shen, Qian Liu, S. L. Zang, J. B. Jiao, C. P. Shen, X. S. Jiang, L. S. Wang, R. G. Ping, S. X. Du, J. Nie, Zheng Wang, Q. M. Ma, L. Y. Shan, S.L. Olsen, N. D. Qi, D. H. Wei, F. Lu, C.D. Fu, X. Y. Shen, Y. N. Gao, G. F. Xu, J. Y. Zhang, J. H. Liu, Fang Liu, H. X. Chen, Y. F. Wang, X. T. Huang, W. D. Li, Y. F. Lai, Z. A. Liu, G. Li, X. B. Ji, G. R. Lu, L. Zhou, H. B. Li, R. G. Liu, J. B. Liu, P. Wang, P. L. Wang, Y. Ban, J. Li, H. S. Sun, B. J. Liu, Q. M. Zhu, D. Y. Wang, S. S. Fang, Y. T. Gu, H. M. Hu, Y. S. Dai, G. S. Varner, Z. Wang, W. G. Li, Y. F. Liang, J. C. Chen, G. Rong, H. F. Chen, Jun Hu, W. F. Wang, K. J. Zhu, Han-Qing Zheng, C. L. Wei, L. Shang, M. G. Zhao, D. H. Zhang, Y. B. Chen, S. M. Li, H. S. Chen, X. Tang, S. S. Sun, B. A. Zhuang, C. X. Liu, Y. Yuan, F. C. Ma, M. H. Ye, J. W. Zhao, W. R. Zhao, C. Z. Yuan, H. Y. Zhang, Q. F. Dong, Hui Liu, K. L. He, X. D. Ruan, Z.J. Guo, G. S. Huang, Y. K. Heng, and X. Q. Li

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, law, Branching fraction, Perturbative QCD, Limit (mathematics), Atomic physics, Collider, law.invention
Abstract

The decays of J / ψ and ψ ( 2 S ) to n K S 0 Λ ¯ + c.c. are observed and measured for the first time, and the perturbative QCD “12%” rule is tested, based on 5.8 × 10 7 J / ψ and 1.4 × 10 7 ψ ( 2 S ) events collected with BESII detector at the Beijing Electron–Positron Collider. No obvious enhancement near n Λ ¯ threshold in J / ψ → n K S 0 Λ ¯ + c.c. is observed, and the upper limit on the branching ratio of J / ψ → K S 0 X , X → n Λ ¯ is determined.

Published
2008
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41. Preparation and characterization of the TiO2 ultrafine particles by detonation method

Author

R. Y. Li, Yandong Qu, Honghao Yan, Xiaohong Wang, Xiaojie Li, and Xin Ouyang

Subjects
Nanostructure, Materials science, Scanning electron microscope, Mechanical Engineering, Transition temperature, Analytical chemistry, Detonation, Mineralogy, Nanoparticle, Condensed Matter Physics, Mechanics of Materials, Transmission electron microscopy, Ultrafine particle, General Materials Science, Crystallite
Abstract

Utilizing the raw materials of TiOSO{sub 4}, NaOH, NH{sub 4}NO{sub 3} and RDX, the TiO{sub 2} ultrafine particles were prepared under high pressure and high temperature by detonation method. The structure, composition and size distribution of the TiO{sub 2} ultrafine particles were systematically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicated the as-prepared TiO{sub 2} ultrafine particles exhibited spherical-like grains and that the average size of particles was 25 {+-} 5 nm. After being heated at 700 deg. C for 1 h, TiO{sub 2} particles have entirely completed the anatase-rutile phase transition, which means that detonation method can effectively enhance the anatase-rutile phase transition by lowering the transition temperature. The size of TiO{sub 2} nanoparticles can be effectively controlled because the as-prepared nanoparticles do not have enough time to grow to large and perfect crystallites during the detonation process.

Published
2008
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42. Direct measurements of the branching fractions for inclusive K± and inclusive semileptonic decays of D+ and D0 mesons

Author

Z. G. Zhao, Z. Y. Ren, Fang Liu, X. T. Huang, Y. N. Guo, J. B. Liu, D. L. Shen, B. J. Liu, J. Li, S. S. Fang, X. Y. Shen, N. D. Qi, Z. Wang, F. Lu, S. Jin, Zhang Bo, D. H. Wei, Jun Hu, R. G. Ping, Yin Xu, S. D. Gu, K. J. Zhu, X. P. Xu, J. Z. Bai, Z. P. Zheng, J. Fang, X. M. Xia, Y. P. Chu, Dapeng Jin, B. A. Zhuang, C. X. Liu, J. C. Chen, Y. Yuan, H. H. Liu, J. W. Zhao, W. R. Zhao, H. M. Hu, J. H. Liu, L. Y. Shan, C. Z. Yuan, H. Y. Zhang, Q. F. Dong, D. X. Zhao, G. F. Xu, Z. A. Zhu, Y. C. Zhu, F. Liu, D. H. Zhang, Z. P. Mao, Hui Liu, H. L. Ma, N. Wu, Y. Weng, M. L. Yan, L. Y. Diao, W. D. Li, H. Q. Zhang, Z. J. Sun, Y. Zeng, Y. X. Yang, Z. P. Zhang, Y. S. Dai, G. Rong, H. F. Chen, H. Y. Sheng, H. X. Yang, J. W. Zhang, S. S. Sun, X. L. Li, Y. C. Lou, T. Hu, X. Y. Jiang, X. H. Mo, B. X. Zhang, Z. X. Zhang, R. G. Liu, G. W. Yu, Z. A. Liu, G. Li, L. S. Wang, J. B. Jiao, F. C. Ma, C. L. Wei, H. B. Liao, X. A. Zhuang, L. Shang, L. L. Ma, P. L. Wang, Y. Ban, Q. M. Ma, J. G. Lu, P. Wang, G. R. Lu, L. Zhou, B. S. Zou, H. B. Li, L. Z. Wang, Zheng Wang, C. L. Luo, Yongzhao Sun, Xiao Cai, Xiao-yan Li, Xiaomei Zhang, Jin Chen, M. H. Ye, Yiyun Zhang, D. Y. Wang, Y. F. Wang, M. He, G. L. Tong, J. P. Liu, Jian Liu, J. P. Zheng, S. X. Du, Q. M. Zhu, M. Wang, Y. F. Lai, C. S. Gao, W. G. Li, Y. T. Gu, Y. X. Ye, J. F. Qiu, Y. N. Gao, Y. B. Chen, J. Y. Zhang, X. B. Ji, Z. Y. Wang, M. Ablikim, R. Y. Li, L. L. Wang, X. X. Xie, H. S. Sun, Y. F. Liang, M. G. Zhao, S. M. Li, H.Q. Zheng, H. S. Chen, X. Tang, Y. S. Zhu, C. C. Zhang, Z. Y. Deng, P. P. Zhao, Qian Liu, H. Qin, Shaojie Zhang, X. Q. Li, Y. K. Heng, J. Hou, S. L. Zang, X. S. Jiang, J. Nie, C.D. Fu, H. X. Chen, K. L. He, and X. D. Ruan

Subjects
Physics, Nuclear physics, Nuclear and High Energy Physics, Meson, Branching (polymer chemistry)
Abstract

With singly-tagged D ¯ samples selected from the data collected at and around 3.773 GeV with the BESII detector at the BEPC collider, we have measured the branching fractions for the inclusive K ± decays of D + and D 0 mesons, which are BF ( D + → K − X ) = ( 24.7 ± 1.3 ± 1.2 ) % , BF ( D + → K + X ) = ( 6.1 ± 0.9 ± 0.4 ) % , BF ( D 0 → K − X ) = ( 57.8 ± 1.6 ± 3.2 ) % and BF ( D 0 → K + X ) = ( 3.5 ± 0.7 ± 0.3 ) % , respectively. We have also measured the branching fractions for the inclusive semileptonic decays of D + and D 0 mesons to be BF ( D + → e + X ) = ( 15.2 ± 0.9 ± 0.8 ) % and BF ( D 0 → e + X ) = ( 6.3 ± 0.7 ± 0.4 ) % . These yield the ratio of their partial widths to be Γ ( D + → e + X ) / Γ ( D 0 → e + X ) = 0.95 ± 0.12 ± 0.07 .

Published
2007
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43. Measurements of the observed cross sections for exclusive light hadron production in e+e− annihilation at s=3.773 and 3.650 GeV

Author

J. B. Liu, Y. X. Yang, J. Fang, Z. A. Liu, G. Li, S. D. Gu, P. L. Wang, Y. Ban, X. L. Li, Y. C. Lou, L. L. Ma, P. Wang, X. Y. Jiang, Z. P. Mao, Dapeng Jin, G. F. Xu, Zheng Wang, Y. T. Gu, S. S. Sun, J. B. Jiao, G. R. Lu, Z. P. Zheng, L. Zhou, H. B. Li, Zhang Bo, H. Y. Sheng, D. Y. Wang, X. A. Zhuang, B. J. Liu, H. H. Liu, R. G. Ping, Q. M. Ma, W. G. Li, S. S. Fang, T. Hu, Z. Wang, Y. F. Wang, B. A. Zhuang, C. X. Liu, W. D. Li, Jin Chen, Q. M. Zhu, Y. Yuan, Y. Xu, Z. A. Zhu, Y. F. Lai, Han-Qing Zheng, S. M. Li, N. Wu, J. W. Zhao, J. P. Zheng, L. Y. Shan, Z. G. Zhao, W. R. Zhao, C. L. Wei, H. B. Liao, L. Shang, C. Z. Yuan, H. Y. Zhang, F. Lu, J. G. Lu, H. S. Chen, Q. F. Dong, Fang Liu, D. X. Zhao, X. Tang, F. C. Ma, M. He, G. L. Tong, Yongzhao Sun, Hui Liu, J. Hou, M. L. Yan, L. S. Wang, L. Y. Diao, M. Ablikim, K. L. He, X. D. Ruan, C. S. Gao, C. L. Luo, S. L. Zang, J. F. Qiu, X. S. Jiang, J. Nie, M. H. Ye, Y. B. Chen, R. Y. Li, Xiao Cai, C.D. Fu, J. H. Liu, H. X. Chen, L. L. Wang, Shaojie Zhang, Y. S. Dai, S. Jin, Jun Hu, K. J. Zhu, Z. Y. Ren, H. M. Hu, Y. N. Guo, X. T. Huang, X. H. Mo, B. X. Zhang, Z. X. Zhang, J. Li, X. P. Xu, X. M. Xia, Y. P. Chu, G. Rong, H. F. Chen, S. X. Du, Y. N. Gao, J. Y. Zhang, X. B. Ji, H. L. Ma, Y. Weng, M. Wang, P. P. Zhao, X. Y. Shen, Qian Liu, H. Qin, Y. S. Zhu, X. Q. Li, C. C. Zhang, Z. Y. Deng, Y. K. Heng, H. X. Yang, J. W. Zhang, G. W. Yu, B. S. Zou, Xiao-yan Li, J. P. Liu, Jian Liu, Y. C. Zhu, F. Liu, H. Q. Zhang, Z. J. Sun, Y. Zeng, Z. P. Zhang, X. X. Xie, J. C. Chen, D. H. Zhang, D. L. Shen, N. D. Qi, D. H. Wei, Z. Y. Wang, L. Z. Wang, H. S. Sun, Xiaomei Zhang, Yiyun Zhang, Y. F. Liang, Y. X. Ye, M. G. Zhao, J. Z. Bai, and R. G. Liu

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Hadron, High Energy Physics::Experiment, Nuclear Experiment
Abstract

By analyzing the data sets of 17.3 pb−1 taken at s = 3.773 GeV and 6.5 pb−1 taken at s = 3.650 GeV with the BESII detector at the BEPC collider, we have measured the observed cross sections for 12 exclusive light hadron final states produced in e + e − annihilation at the two energy points. We have also set the upper limits on the observed cross sections and the branching fractions for ψ ( 3770 ) decay to these final states at 90% C.L.

Published
2007
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44. Experimental studies of the π+π-π+π-π0, K+K-π+π-π0 and pp̄π+π-π0 final states produced in e+e- annihilation at $\sqrt{s}= 3.773$ and 3.650 GeV

Author

S. D. Gu, J. B. Jiao, Y. Xu, B. J. Liu, Yudan Wang, G. R. Lu, Z. A. Zhu, J. G. Lu, Zheng Wang, X. M. Xia, Han-Qing Zheng, Y. N. Guo, H. M. Hu, Y. T. Gu, J. C. Chen, T. Hu, XZ（蔡翔舟） Cai, W. D. Li, Xichao Ruan, X. L. Li, G. Li, J. Fang, Y. C. Zhu, H. Y. Sheng, S. X. Du, D. H. Wei, H. S. Chen, P. L. Wang, H. X. Yang, M. L. Yan, S. H. Zhang, N. D. Qi, X. Y. Shen, Huirun Chen, R. G. Ping, Lianyou Shan, L. S. Wang, Z. A. Liu, M. G. Zhao, J. W. Zhao, Y. Ban, J. P. Liu, Q. Liu, M. He, X. Tang, H. Y. Zhang, G. W. Yu, S. S. Sun, K. J. Zhu, X. H. Mo, Y. C. Lou, M. H. Ye, D. L. Shen, Z. Y. Ren, J. Z. Bai, Q. M. Zhu, X. Y. Zhang, L. L. Ma, F. C. Ma, R. G. Liu, J. B. Liu, J. Y. Zhang, L. P. Zhou, W. G. Li, C. X. Liu, L. L. Wang, Jin Chen, M. Z. Wang, S. S. Fang, H. S. Sun, X. N. Li, Z. P. Mao, Y. K. Heng, H. M. Liu, Shang Lunlin, J. H. Liu, G. F. Xu, S. Jin, Z. Zhao, J. F. Qiu, R. Y. Li, J. Nie, Cunfeng Wei, Q. F. Dong, J. Hou, Z. Y. Wang, J. W. Zhang, Fang Liu, Y. S. Dai, Xuai Zhuang, C. S. Gao, Jinxing Zheng, D. X. Zhao, C.D. Fu, B. Y. Zhang, X. X. Xie, Q. M. Ma, Y. Yuan, Y. S. Zhu, Z. Y. Deng, H. Q. Zhang, K. L. He, Z. P. Zhang, Zujian Wang, S. L. Zang, L. Y. Diao, Y. P. Chu, X. P. Xu, X. B. Ji, B.S. Zou, P. P. Zhao, X. T. Huang, G. Rong, B. X. Zhang, Z. P. Zheng, Jian Liu, G. L. Tong, M. Ablikim, B. A. Zhuang, X. Y. Jiang, Y. Zeng, F. Lu, Junhui Hu, Y. B. Chen, C. Z. Yuan, Y. Weng, P. Wang, Y. F. Lai, H. F. Chen, N. Wu, H. L. Ma, S. M. Li, Y. X. Yang, Y. Z. Sun, Z. X. Zhang, W. R. Zhao, F. Liu, Y. N. Gao, X. Q. Li, H. Qin, Z. J. Sun, H. B. Li, C. L. Luo, C. C. Zhang, H. H. Liu, J. C. Li, Hongbo Liao, Yiyun Zhang, Y. X. Ye, X. S. Jiang, Y. F. Liang, D. P. Jin, Dayong Wang, and D. H. Zhang

Subjects
Physics, Nuclear physics, Annihilation, Physics and Astronomy (miscellaneous), Statistical physics, Engineering (miscellaneous)
Abstract

We report measurements of the observed cross sections for e+e-→ωπ+π-, ωK+K-, ωpp, K+K-ρ0π0, K+K-ρ+π-+c.c., K*0K-π+π0+c.c., K*+K-π+π-+c.c., φπ+π-π0 and ΛΛπ0 at \(\sqrt{s}= 3.773\) and 3.650 GeV. Upper limits (90% C.L.) are given for observed cross sections and for ψ(3770) decay branching fractions for production of these final states. These measurements are made by analyzing the data sets of 17.3 pb-1 collected at \(\sqrt{s}=\)3.773 GeV and 6.5 pb-1 collected at \(\sqrt{s}=\)3.650 GeV with the BES-II detector at the BEPC collider.

Published
2007
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45. The design and mass production on Resistive Plate Chambers for the BESIII experiment

Author

Jianzhong Zhao, R. Y. Li, Jifeng Han, Qian Liu, Wanxiang Wang, Ning Yao, Jin Chen, Yuguang Xie, Minfa Su, Jianbing Zhao, Yanchu Wang, Jiawen Zhang, and Haiquan Zhao

Subjects
Physics, Nuclear and High Energy Physics, Resistive touchscreen, Fabrication, Muon, Omega, Particle detector, Nuclear physics, chemistry.chemical_compound, chemistry, Electrode, Bakelite, Phenolic paper, Composite material, Instrumentation
Abstract

A new type of the phenolic paper laminate is used as the resistive electrodes of BESIII RPC. The surface smoothness of these laminates is comparable to that of the bakelite plates with linseed oil treating. A technique to adjust the bulk resistivity of the laminates within the range of 10(9)-10(13) Omega cm is developed. Nowadays, about 1000 bare chambers (1200 m(2)) have been produced and used for BESIII MUON, and the rejection rate is only 1.5%. In this paper, we will discuss the mass production and quality control procedures of these RPCs. (C) 2007 Elsevier B.V. All rights reserved.

Published
2007
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46. Precision measurements of the mass, the widths of ψ(3770) resonance and the cross section σ[e+e−→ψ(3770)] at Ecm=3.7724 GeV

Author

Z. P. Zheng, R. Y. Li, F. Lu, Xiru Huang, Y. C. Zhu, G. L. Tong, Y. Z. Sun, M. Ablikim, B. A. Zhuang, Cunfeng Wei, P. L. Wang, Q. F. Dong, Jianwei Sun, Ning Zhou, J. W. Zhang, Z. P. Zhang, Y. Zeng, Y. Q. Guo, H. B. Li, K. L. He, H. S. Chen, Jiming Yang, L. Y. Dong, Zujian Wang, Y. B. Chen, X. Q. Li, C. L. Luo, Houbing Lu, Yin Xu, S. D. Gu, Yudan Wang, G. R. Lu, Yingchun Zhu, C. C. Zhang, Y. F. Lai, H. F. Chen, Z. A. Zhu, H. Qin, J. W. Zhao, Z. Y. Yi, W. R. Zhao, F. Liu, Y. N. Guo, Yi Jin, W. F. Wang, F. C. Ma, G. W. Yu, C. Z. Yuan, Fang Liu, Y. N. Gao, Feng Shi, L. P. Zhou, Y. T. Gu, D. X. Zhao, B. Y. Zhang, Hangxu Li, J. H. Liu, Xunchao Zhang, X. Tang, Zhe Wang, X. Shi, Z. P. Mao, X. X. Xie, P. P. Zhao, H. H. Liu, Xingzhu Cui, J. Nie, J. C. Li, J. F. Qiu, J. B. Jiao, B. X. Zhang, D. H. Wei, X. S. Jiang, Q. M. Ma, B.S. Zou, Z.Q. Zhang, Y. S. Dai, C. S. Gao, H. L. Ma, S. M. Li, Fan Yang, Huirun Chen, X. T. Huang, G. Rong, S. S. Sun, Y. Yuan, X. Y. Shen, Jinxing Zheng, Y. S. Zhu, Jin Chen, X. H. Mo, L. S. Wang, Bo Xin, M. G. Zhao, Q. M. Zhu, Yang Tian, S. L. Zang, M. H. Ye, J. G. Bian, S. S. Fang, X. Y. Zhang, M. Z. Wang, R. G. Liu, N. Wu, H. Y. Zhang, J. B. Liu, Qiyang Zhang, Z. J. Sun, H. S. Sun, W. D. Li, S. X. Du, H. M. Hu, M. L. Yan, Haiping Peng, Z. Y. Wang, H.B. Liao, X. B. Ma, Xuai Zhuang, J. Y. Zhang, Y. K. Heng, Zheng Wang, J. G. Lu, P. Wang, T. Hu, J. C. Chen, XZ（蔡翔舟） Cai, Yu Zeng, J. Fang, Lianyou Shan, W. G. Li, D. Y. Wang, H. M. Liu, H. X. Yang, J. P. Liu, Z. Y. Ren, Yiyun Zhang, Y. X. Ye, X. M. Xia, G. F. Xu, S. Jin, Z. Z. Du, S. P. Chi, M. He, D. L. Shen, H. Y. Sheng, Z. Q. Tan, K. J. Zhu, J. M. Yuan, C. X. Liu, N. D. Qi, L. L. Ma, Y.L. Li, Z. A. Liu, Y. Ban, Shang Lunlin, J. Z. Bai, G. Li, X.L. Li, C. D. Fu, Z. Y. Deng, Y. P. Chu, X. B. Ji, H.Q. Zheng, Y. F. Liang, D. P. Jin, D. H. Zhang, and Y. X. Yang

Subjects
Physics, Nuclear and High Energy Physics, Branching fraction, Electron–positron annihilation, Hadron, Atomic physics
Abstract

By analyzing the R values measured at 68 energy points in the energy region between 3.650 and 3.872 GeV reported in our previous paper, we have precisely measured the mass, the total width and the leptonic width of the ψ ( 3770 ) resonance to be M ψ ( 3770 ) = 3772.4 ± 0.4 ± 0.3 MeV , Γ ψ ( 3770 ) tot = 28.5 ± 1.2 ± 0.2 MeV and Γ ψ ( 3770 ) e e = 277 ± 11 ± 13 eV , respectively. We have measured the leptonic branching fraction of the ψ ( 3770 ) decays and the ψ ( 3770 ) production cross section at its peak to be B [ ψ ( 3770 ) → e + e − ] = ( 0.97 ± 0.03 ± 0.05 ) × 10 −5 and σ prd [ e + e − → ψ ( 3770 ) ] = 10.0 ± 0.3 ± 0.5 nb , respectively. The latter one results in the corresponding observed cross section of σ obs [ e + e − → ψ ( 3770 ) ] = 7.2 ± 0.2 ± 0.4 nb . We have also measured R uds = 2.121 ± 0.023 ± 0.084 for the continuum light hadron production in the region from 3.650 to 3.872 GeV.

Published
2007
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47. Measurements of the observed cross sections for e+e−→light hadrons at s=3.773 and 3.650 GeV

Author

Y. Zeng, X. S. Jiang, Y. B. Chen, G. F. Xu, Y. F. Lai, H. F. Chen, S. Jin, N. Wu, L. S. Wang, M. G. Zhao, S. S. Sun, W. G. Li, J. B. Jiao, Xichao Ruan, Y. C. Zhu, P. L. Wang, D. Y. Wang, R. Y. Li, H. Y. Zhang, X. Q. Li, W. D. Li, M. He, P. Wang, H. H. Liu, D. L. Shen, H. Y. Sheng, H. M. Liu, J. Y. Zhang, J. C. Li, J. Hou, Z. Y. Wang, H. Qin, C. X. Liu, H. Q. Zhang, Q. M. Zhu, K. L. He, Fang Liu, Xuai Zhuang, Y. K. Heng, Zheng Wang, Jin Chen, M. Z. Wang, Y. Xu, N. D. Qi, W. R. Zhao, Z. P. Zhang, P. P. Zhao, X. Y. Zhang, S. S. Fang, R. G. Liu, F. Lu, R. G. Ping, J. G. Lu, D. X. Zhao, C.D. Fu, B. Y. Zhang, J. B. Liu, S. D. Gu, J. C. Chen, H. S. Sun, X. N. Li, F. C. Ma, J. W. Zhao, F. Liu, Hongbo Liao, G. W. Yu, X. M. Xia, Cunfeng Wei, Q. F. Dong, T. Hu, XZ（蔡翔舟） Cai, X. L. Li, J. Fang, H. X. Yang, Junhui Hu, Zujian Wang, J. W. Zhang, X. T. Huang, J. H. Liu, J. F. Qiu, Yiyun Zhang, S. X. Du, Z. G. Zhao, L. Y. Diao, G. Rong, M. L. Yan, Y. N. Gao, Lianyou Shan, X. X. Xie, J. Nie, B. X. Zhang, Y. X. Ye, Jian Liu, J. P. Liu, Y. T. Gu, Y. C. Lou, Z. P. Zheng, H. S. Chen, C. Z. Yuan, Y. Weng, Z. J. Sun, L. L. Ma, Y. S. Dai, X. Tang, Z. Y. Ren, C. S. Gao, Y. X. Yang, D. H. Wei, Jinxing Zheng, Z. A. Liu, H. B. Li, C. L. Luo, G. L. Tong, S. L. Zang, Huirun Chen, Y. Ban, M. Ablikim, B. A. Zhuang, C. C. Zhang, X. Y. Jiang, S. H. Zhang, X. Y. Shen, Y. Z. Sun, X. H. Mo, Han-Qing Zheng, B. J. Liu, Yudan Wang, G. R. Lu, H. M. Hu, J. Z. Bai, M. H. Ye, Z. X. Zhang, Z. A. Zhu, C. P. Shen, L. L. Wang, L. P. Zhou, Z. P. Mao, Y. N. Guo, B.S. Zou, Q. M. Ma, K. J. Zhu, Y. Yuan, Y. S. Zhu, Q. Liu, Shang Lunlin, G. Li, Y. F. Liang, D. P. Jin, D. H. Zhang, Z. Y. Deng, Y. P. Chu, X. P. Xu, X. B. Ji, H. L. Ma, and S. M. Li

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Physics::Instrumentation and Detectors, Electron–positron annihilation, Hadron, Detector, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Nuclear Experiment, Collider, Energy (signal processing)
Abstract

Using the data sets of 17.3 pb −1 collected at s = 3.773 GeV and 6.5 pb −1 collected at s = 3.650 GeV with the BESII detector at the BEPC collider, we have measured the observed cross sections for 18 exclusive light hadron final states produced in e + e − annihilation at the two energy points.

Published
2007
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48. Measurements of ψ(2S) decays to octet baryon–antibaryon pairs

Author

J. Hou, T. Hu, Zhenyu Zhang, B. J. Liu, S. S. Fang, Z. Wang, S. L. Zang, X. S. Jiang, J. Nie, J. C. Chen, C.D. Fu, H. S. Sun, H. X. Chen, S. M. Li, X. A. Zhuang, H. X. Yang, J. W. Zhang, G. W. Yu, Y. F. Liang, Zhang Bo, H. S. Chen, Yin Xu, Z. Y. Ren, Y. C. Zhu, F. Liu, D. H. Zhang, X. Y. Zhang, X. Tang, B. S. Zou, M. He, G. L. Tong, Xiao-yan Li, Z. A. Liu, G. Li, Dapeng Jin, Y. N. Guo, M. Wang, Z. A. Zhu, Shaojie Zhang, J. P. Liu, R. G. Liu, S. S. Sun, P. L. Wang, Y. Ban, Jian Liu, H. Q. Zhang, Z. J. Sun, Y. Zeng, N. Wu, M. G. Zhao, X. Q. Li, L. Z. Wang, Y. X. Yang, Jin Chen, X. L. Li, H. Y. Sheng, S. D. Gu, Yiyun Zhang, F. Lu, Y. C. Lou, G. F. Xu, F. A. Harris, Yulin Gao, C. L. Wei, L. Shang, Y. X. Ye, M. Ablikim, B. A. Zhuang, C. X. Liu, Y. T. Gu, Z. G. Zhao, X. T. Huang, J. B. Jiao, R. Y. Li, Z. P. Zheng, J. B. Liu, X. Y. Jiang, L. Y. Shan, D. L. Shen, Y. Yuan, L. L. Wang, H. H. Liu, L. S. Wang, X. P. Xu, X. M. Xia, Y. P. Chu, N. D. Qi, Q. M. Ma, D. H. Wei, J. Fang, Fang Liu, G. S. Varner, C. P. Shen, J. Z. Bai, J. Li, F. C. Ma, Y. F. Wang, P. Wang, H.Q. Zheng, J. P. Zheng, H. L. Ma, Y. F. Lai, H. B. Liao, Y. Weng, C. L. Luo, H. M. Hu, D. Y. Wang, X. X. Xie, J. G. Lu, Z. Y. Wang, Zhentao Zhang, M. H. Ye, W. G. Li, Yongzhao Sun, Xiao Cai, R. G. Ping, Z. P. Mao, L. L. Ma, D. X. Zhao, G. Rong, H. F. Chen, Zheng Wang, G. R. Lu, L. Zhou, W. D. Li, M. L. Yan, L. Y. Diao, H. B. Li, S. X. Du, Jun Hu, C. S. Gao, S.L. Olsen, J. Y. Zhang, Y. K. Heng, J. F. Qiu, X. Y. Shen, Q. M. Zhu, X. B. Ji, X. H. Mo, B. X. Zhang, Y. B. Chen, J. H. Liu, Y. S. Dai, S. Jin, Y. S. Zhu, K. J. Zhu, C. C. Zhang, Z. Y. Deng, P. P. Zhao, Qian Liu, H. Qin, U. Wiedner, J. W. Zhao, W. R. Zhao, C. Z. Yuan, H. Y. Zhang, Q. F. Dong, Hui Liu, Z.J. Guo, K. L. He, and X. D. Ruan

Subjects
Baryon, Physics, Nuclear physics, Nuclear and High Energy Physics, Angular distribution, Positron, Octet, Electron
Abstract

With a sample of 14 × 10 6 ψ ( 2 S ) events collected by the BESII detector at the Beijing Electron Positron Collider (BEPC), the decay channels ψ ( 2 S ) → B 8 B ¯ 8 ( p p ¯ , Λ Λ ¯ , Σ 0 Σ ¯ 0 , Ξ − Ξ ¯ + ) are measured, and their branching ratios are determined to be ( 3.36 ± 0.09 ± 0.25 ) × 10 −4 , ( 3.39 ± 0.20 ± 0.32 ) × 10 −4 , ( 2.35 ± 0.36 ± 0.32 ) × 10 −4 , ( 3.03 ± 0.40 ± 0.32 ) × 10 −4 , respectively. In the decay ψ ( 2 S ) → p p ¯ , the angular distribution parameter α is determined to be 0.85 ± 0.24 ± 0.04 .

Published
2007
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49. Preparation of SrAl2O4: Eu2+, Dy3+ nanometer phosphors by detonation method

Author

Xiaojie Li, R. Y. Li, Yandong Qu, Zhan-Lei Wang, and Xinghua Xie

Subjects
Materials science, Mechanical Engineering, Analytical chemistry, Detonation, Mineralogy, Phosphor, Condensed Matter Physics, medicine.disease_cause, Soot, Mechanics of Materials, Transmission electron microscopy, medicine, Particle, General Materials Science, Nanometre, Particle size, Monoclinic crystal system
Abstract

SrAl 2 O 4 : Eu 2+ , Dy 3+ nanometer phosphors were synthesized by detonation method. The particle morphology and optical properties of detonation soot that was heated at different temperatures (600–1100 °C) had been studied systematically by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Results indicated SrAl 2 O 4 : Eu 2+ , Dy 3+ nanometer powders in monoclinic system ( a = 8.442, b = 8.822, c = 5.160, β = 93.415) can be synthesized by detonation method, when detonation soot was heated at 600–800 °C. The particle size of SrAl 2 O 4 : Eu 2+ , Dy 3+ is 35 ± 15 nm. Compared with the solid-state reaction and sol-gel method, synthesis temperature of the detonation method is lower about 500 and 200 °C respectively. After being excited under UN lights, detonation soot and that heated at 600–1100 °C can emit a green light.

Published
2006
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50. Partial wave analyses of J/ψ→γπ+π− and γπ0π0

Author

S. D. Gu, L. P. Zhou, Yingchun Zhu, J. F. Qiu, Z. P. Mao, Q. M. Zhu, Y. N. Guo, G. S. Varner, Y. X. Yang, B. J. Liu, Yudan Wang, J. B. Jiao, Q. Liu, M. Z. Wang, W. G. Li, Zheng Wang, S. X. Du, M. L. Yan, X. Tang, Xuan Zhang, D. Y. Wang, Zhenyu Zhang, H. S. Sun, X. N. Li, Y. Q. Guo, Haiping Peng, X. S. Jiang, Y. B. Chen, Z. A. Zhu, S. L. Zang, J. C. Chen, J. H. Liu, Y. C. Zhu, Xingzhu Cui, H. B. Li, Y. F. Lai, H. F. Chen, W. F. Wang, H. M. Hu, Z. Y. Yi, J. Fang, S.L. Olsen, C. L. Luo, C. P. Shen, H. Y. Zhang, P. Wang, J. Nie, Y. P. Chu, X. P. Xu, X. B. Ji, W. D. Li, Y. F. Liang, P. L. Wang, H. X. Yang, D. P. Jin, N. Wu, Haiwen Liu, F. A. Harris, G. S. Huang, S. S. Sun, Y. Z. Sun, J. G. Lu, C. C. Zhang, X. B. Ma, Xuai Zhuang, J. Y. Zhang, D. H. Zhang, Gongru Lu, Y. S. Dai, F. Lu, H. S. Chen, Yu Zeng, T. Hu, XZ（蔡翔舟） Cai, H. Y. Sheng, J. W. Zhao, C. S. Gao, X. L. Li, R. Y. Li, Y. C. Lou, Z. Y. Ren, Jinxing Zheng, S. P. Chi, Z. Q. Tan, G. W. Yu, Y. K. Heng, S. H. Zhang, X. Y. Shen, Fang Liu, X. Q. Li, Q. M. Ma, Cunfeng Wei, N. D. Qi, Q. F. Dong, Ning Zhou, K. J. Zhu, J. M. Yuan, X. X. Xie, Lianyou Shan, R. G. Liu, W. R. Zhao, Xunchao Zhang, J. B. Liu, C. Z. Yuan, F. Liu, Z. G. Zhao, Zhe Wang, R. G. Ping, L. L. Ma, D. X. Zhao, B. Y. Zhang, J. W. Zhang, Y.L. Li, H. Qin, Z. A. Liu, Hangxu Li, Y. Yuan, Y. S. Zhu, Shang Lunlin, G. Li, Jin Chen, Z. J. Sun, S. S. Fang, J. P. Liu, C. D. Fu, G. F. Xu, Y. Ban, Z. Y. Deng, H. H. Liu, L. S. Wang, M. G. Zhao, J. C. Li, Z.J. Guo, Yi Jin, H. L. Ma, S. M. Li, Hongbo Liao, S. Jin, Z. Y. Wang, J. Z. Bai, Yiyun Zhang, Y. Zeng, Y. X. Ye, K. L. He, H.Q. Zheng, Xingtao Huang, X. H. Mo, M. H. Ye, M. He, L. L. Wang, D. L. Shen, C. X. Liu, Y. T. Gu, X. M. Xia, D. H. Wei, Z. P. Zheng, G. L. Tong, B. A. Zhuang, X. Y. Jiang, Jianwei Sun, B. X. Zhang, B.S. Zou, J. G. Bian, H. Q. Zhang, Zujian Wang, L. Y. Diao, P. P. Zhao, M. Ablikim, G. Rong, Yin Xu, Y.N. Gao, and F. C. Ma

Subjects
Physics, Nuclear and High Energy Physics, Amplitude, Branching fraction, Atomic physics, Spin (physics)
Abstract

Results are presented on J / ψ radiative decays to π + π − and π 0 π 0 based on a sample of 58M J / ψ events taken with the BES II detector. Partial wave analyses are carried out using the relativistic covariant tensor amplitude method in the 1.0 to 2.3 GeV / c 2 π π mass range. There are conspicuous peaks due to the f 2 ( 1270 ) and two 0 + + states in the 1.45 and 1.75 GeV / c 2 mass regions. The first 0 + + state has a mass of 1466 ± 6 ± 20 MeV / c 2 , a width of 108 −11 +14 ± 25 MeV / c 2 , and a branching fraction B ( J / ψ → γ f 0 ( 1500 ) → γ π + π − ) = ( 0.67 ± 0.02 ± 0.30 ) × 10 −4 . Spin 0 is strongly preferred over spin 2. The second 0 + + state peaks at 1765 −3 +4 ± 13 MeV / c 2 with a width of 145 ± 8 ± 69 MeV / c 2 . If this 0 + + is interpreted as coming from f 0 ( 1710 ) , the ratio of its branching fractions to ππ and K K ¯ is 0.41 −0.17 +0.11 .

Published
2006
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