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403 results on '"Y. Y. Shao"'

1. Effect of acid-soluble aluminum content on precipitates and magnetic properties of grain oriented silicon steel

Author: H. Y. Wang, Y. Y. Shao, Z. W. Jia, and Q. Guo
Subjects: grain oriented silicon steel, acid-soluble aluminum, precipitates, magnetic properties, Mining engineering. Metallurgy, TN1-997
Abstract: The effect of acid-soluble aluminum content on precipitates and magnetic properties of grain oriented silicon steel was researched by optical microscopy and zeiss ultra 55 Scanning Electron Microscope (SEM) technique respectively. The results show that the number of precipitates increases with the increase of acid-soluble aluminum content, and the size of precipitates is relatively large after hot rolling. Under the low hot rolling temperature, the number of precipitates in the samples is large and the size is small, moreover, the grain size of the primary recrystallized grain is small. The matching of process parameters under different production process lines is the key to obtain good magnetic performance. The effect of nitriding on magnetic properties of the samples is related to the acidsoluble aluminum content of the samples. Too much acid-soluble aluminum can deteriorate the magnetic properties.
Published: 2024

2. Effect of finishing rolling reduction on microstructures and textures of grain oriented silicon steel

Author: Y. Y. Shao, Z. W. Jia, and Q. Guo
Subjects: grain oriented silicon steel, finishing rolling reduction, SEM, EBSD, microstructure, Mining engineering. Metallurgy, TN1-997
Abstract: The effect of finishing rolling reduction on microstructures and textures of grain oriented silicon steel was researched by optical microscopy, zeiss ultra 55 Scanning Electron Microscope (SEM) and Electron Backscatter Diffraction (EBSD) technique severally. The results show that the grain size of hot rolled sheets and decarburized strips decreases, while the center grain size of the normalized sheet increases with the increase of the finishing rolling reduction. The pearlite content increases with the increase of the finishing rolling reduction after normalization. Compare with the previous research, the effect of finishing rolling reduction on the grain size of primary recrystallization is greater than that of roughing rolling reduction, and large rolling reduction is beneficial to the formation of {110} texture.
Published: 2024

3. Effect of hot rolling reduction on microstructures and textures of grain oriented silicon steel

Author: Y. Y. Shao, Z. W. Jia, and Q. Guo
Subjects: grain oriented silicon steel, hot rolling, reduction, microstructure, texture, Mining engineering. Metallurgy, TN1-997
Abstract: The effect of hot rolling reduction on microstructures and textures of grain oriented silicon steel was studied by optical microscopy (OM), zeiss ultra 55 Scanning electron microscope (SEM) and Electron backscatter diffraction (EBSD) technique respectively. The results indicate that the effect of hot rolling reduction on grain size of hot rolled and normalized sheets in surface layer is great, while the effect on grain size of primary recrystallized grain is little. The shear zone thickens with the finishing reduction decreases, moreover strong {111} and {110} textures can be obtained in hot rolled sheets. Combined with the previous research conclusions, it can be found that the rolling process of oriented silicon steel is contributed to the formation of texture, while the recrystallization process reduces the sharpness of the texture.
Published: 2022

4. Effect of hot rolling temperature on microstructures and textures of grain oriented silicon steel

Author: C. J. Wang, Q. Guo, and Y. Y. Shao
Subjects: grain oriented silicon steel, hot rolling, sheet, texture, microstructure, Mining engineering. Metallurgy, TN1-997
Abstract: The effect of hot rolling temperature on microstructures and textures of grain oriented silicon steel was studied by optical microscopy (OM), zeiss ultra 55 Scanning electron microscope (SEM) and Electron backscatter diffraction (EBSD) technique respectively. The results show that being hot rolled at 1 152 °C and 1 227 °C respectively, the effect of hot rolling temperature on microstructures of hot rolled and normalized sheets is little, and there is only a small difference in grain size between the samples. Secondary recrystallization is difficult to occur in the medium temperature sample due to the lack of sufficient inhibitors in the sample. The major deformed texture component in center region of hot rolled sheets is {114} which has obviously heredity, and it is more sharp in low temperature sample.
Published: 2021

5. Study on production of conventional grain oriented (CGO) silicon steel without normalizing process

Author: Y. Y. Shao
Subjects: CGO silicon steel, sheet, normalizing, annealing, microstructure, Mining engineering. Metallurgy, TN1-997
Abstract: The production of conventional grain oriented silicon steel without normalizing was studied by two-stage cold rolling process, and the orientation evolution was analyzed by optical microscopy (OM) and electron backscatter diffraction (EBSD) technique. The results indicate that, the key of CGO silicon steel hot rolled sheet canceling normalizing process is to obtain as many {111} and Goss oriented grains as possible, meanwhile, it is to increase the nitrogen pressure appropriately during the temperature-rise stage of secondary recrystallization. By controlling the process parameters, the iron loss P1, 7 of the finished product is 1,258 W/kg, and the magnetic induction B8 is 1,840 T. Furthermore, the cubic orientation can be retained more in CGO silicon steel after annealing due to the less influence of columnar grain.
Published: 2020

6. AN AUTONOMOUS GPS-DENIED UNMANNED VEHICLE PLATFORM BASED ON BINOCULAR VISION FOR PLANETARY EXPLORATION

Author: M. Qin, X. Wan, Y. Y. Shao, and S. Y. Li
Subjects: Technology, Engineering (General). Civil engineering (General), TA1-2040, Applied optics. Photonics, TA1501-1820
Abstract: Vision-based navigation has become an attractive solution for autonomous navigation for planetary exploration. This paper presents our work of designing and building an autonomous vision-based GPS-denied unmanned vehicle and developing an ARFM (Adaptive Robust Feature Matching) based VO (Visual Odometry) software for its autonomous navigation. The hardware system is mainly composed of binocular stereo camera, a pan-and tilt, a master machine, a tracked chassis. And the ARFM-based VO software system contains four modules: camera calibration, ARFM-based 3D reconstruction, position and attitude calculation, BA (Bundle Adjustment) modules. Two VO experiments were carried out using both outdoor images from open dataset and indoor images captured by our vehicle, the results demonstrate that our vision-based unmanned vehicle is able to achieve autonomous localization and has the potential for future planetary exploration.
Published: 2018
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7. [Clinical characteristics and prognosis of 49 newly diagnosed primary central nervous system diffuse large B-cell lymphoma]

Author: J, Song, H, Liu, H L, Shen, L Z, Yue, X J, Yang, W J, Song, C Y, Sun, S Z, Yu, K, Ding, Y H, Wang, L J, Li, H, Yu, Y Y, Shao, C M, Wang, S Y, Yue, and R, Fu
Subjects: Central Nervous System, 淋巴瘤，大B细胞，弥漫性, 中枢神经系统, 预后, Prognosis, Central Nervous System Neoplasms, 论著, Bruton's tyrosine kinase, Lymphoma, large B cell, diffuse, Antineoplastic Combined Chemotherapy Protocols, Humans, Lymphoma, Large B-Cell, Diffuse, 布鲁顿酪氨酸激酶, Aged, Retrospective Studies
Abstract: 目的回顾性分析原发中枢神经系统淋巴瘤中弥漫大B细胞淋巴瘤（PCNSL-DLBCL）患者的临床特征及不同治疗方案对患者生存及预后的影响。方法回顾性分析天津医科大学总医院自2014年7月至2020年12月收治的49例PCNSL-DLBCL患者的临床资料，根据治疗方案分为MTX组、R-CDOP组、BTKi-R-MTX组和RLZT组，计算各组中位总生存（OS）与无进展生存（PFS）时间，并进行单因素、多因素预后分析，比较各组患者的生存预后。结果 MTX组、R-CDOP组、BTKi-R-MTX组和RLZT组的中位OS时间分别为16.5个月、4.5个月、42个月和未达到（P
Published: 2022

8. Measurement of the Mass of the τ Lepton

Author: T. H. Burnett, S. T. Xue, F. Li, H. L. Ni, W. G. Li, Jun-Bing Ma, H. S. Zhou, G. Y. Hu, Q. Liu, Z. D. Cheng, G. P. Zhou, O. Bardon, E. Soderstrom, Wei Li, Y. H. Zhou, Michael J. Fero, Z. J. Jiang, J. S. Whitaker, Chunmei Zhang, L. P. Zhou, Z. P. Mao, Robert Wilson, S. D. Gu, D. H. Ma, W. G. Yan, Q. P. Jia, L. J. Pan, T. Hu, H. Marsiske, D. L. Shen, M. L. Gao, Y. S. Li, C. M. Yang, R. Cowan, W. X. Gao, M. Mandelkern, Ming-Han Ye, Q. M. Zhu, W. D. Li, Yuanyuan Wang, J. W. Zhang, J. A. Coller, S. Z. Lin, D. G. Hitlin, W. R. Zhao, E. Torrence, H. M. Liu, Lei Zhang, Q. M. Li, Z. P. Zheng, Y. F. Lai, Y. B. Liu, D. M. Xi, Y. N. Gao, Joseph Izen, G. Rong, L. S. Zheng, Y. Zhang, X. M. Xia, J. Yan, Pihong Zhao, H. Y. Zhang, J. Panetta, J. S. Campbell, A. S. Johnson, S. M. Chen, D. X. Zhao, B. Y. Zhang, W. X. Gu, Y. C. Zhu, P. Wang, G. L. Tong, M. Z. Wang, X. C. Meng, Z. Q. Xu, W. H. Toki, P. L. Wang, X. F. Zhou, Junguang Lu, P. F. Lang, Xingzhu Cui, H. C. Cui, H. Z. Shi, H. S. Sun, S. Q. Zhang, D. Q. Huang, T. J. Wang, A. J. S. Smith, J. Synodinos, R. Becker-Szendy, J. Z. Bai, Ya-Nan Guo, C. Y. Yang, S. Q. Gao, X. F. Song, Y. Q. Chen, H. L. Ding, Xin Wu, D. P. Stoker, C. Fang, L. Z. Wang, X. X. Xie, R. K. Yamamoto, M. H. Kelsey, R. S. Xu, J. C. Li, Y. K. Que, H. S. Mao, Y. S. Zhu, S. Z. Ye, M. Hatanaka, W. Dunwoodie, M. G. Zhao, Z. Q. Yu, W. J. Wisniewski, G. Zioulas, J. H. Gu, J. Schultz, J. Quigley, S. J. Chen, L. Jones, B. Lowery, Chun-Hua Jiang, J. J. He, P. P. Xie, P. Q. Li, Y. Y. Shao, Jinxing Zheng, E. C. Ma, H. L. Zhang, E. Prabhakar, A. J. Lankford, H. B. Yao, J. T. Shank, D. H. Zhang, H. Y. Sheng, N. D. Qi, Z. Z. Du, R. G. Liu, B. Schmid, Y. L. Han, R. B. Li, Y. Z. Huang, F. C. Porter, and Y. N. Guo
Subjects: Physics, Particle physics, Lepton
Published: 2020

9. 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

10. Direct Measurement of the Pseudoscalar Decay Constant, fDs

Author: Z. P. Zheng, Y. Jin, J. C. Li, C. C. Zhang, D. Paluselli, G. P. Zhou, J. G. Lu, G. Zioulas, S. Z. Lin, W. R. Zhao, Z. A. Liu, L. S. Wang, M. H. Ye, R. B. Li, I. Blum, Z. Q. Xu, Y. H. Zhou, K. R. He, R. J. Wilson, Chun-Hua Jiang, D. P. Stoker, J. H. Liu, T. J. Wang, S. Whittaker, R. Malchow, G. L. Tong, T. Hu, Michael Schernau, W. Yang, B. A. Zhuang, P. Gratton, Q. P. Jia, J. Panetta, S. M. Chen, X. M. Xia, H. B. Lan, W. X. Zhao, S. Q. Gao, J. Nie, J. Fang, L. S. Zheng, X. R. Shi, Y. Z. Huang, G. P. Chen, Y. B. Liu, Y. Zhang, Y. C. Zhu, O. Bardon, P. L. Wang, E. Soderstrom, H. Shen, Wei Li, D. X. Zhao, B. Y. Zhang, F. C. Porter, F. Sun, X. Q. Hu, W. D. Li, Y. F. Gu, S. H. Kang, D. Z. Xu, J. M. lzen, X. F. Zhou, D. Q. Huang, R. S. Xu, Y. Y. Wang, Y. Y. Shao, C. S. Gao, D. G. Hitlin, M. He, D. L. Shen, J. Quigley, S. Z. Ye, M. Hatanaka, M. Mandelkern, C. Z. Yuan, H. B. Hu, R. G. Liu, Jinxing Zheng, S. J. Chen, H. S. Mao, B. K. Kim, Y. Q. Chen, S. T. Xue, J. W. Zhang, B. Schmid, B. S. Cheng, J. Z. Bai, A. Breakstone, Q. Liu, Xingzhu Cui, M. G. Zhao, G. Y. Hu, F. A. Harris, L. Jones, J. H. Gu, J. Schultz, X. L. Fan, F. Li, H. L. Ni, H. C. Cui, Y. K. Que, J. Chen, Li Zhou, H. B. Yao, Q. M. Zhu, H. Z. Shi, P. Wang, Jun-Bing Ma, Y. P. Tan, S. M. Wang, D. M. Xi, J. Yan, S. W. Han, J. Synodinos, X. F. Song, P. P. Xie, X. Y. Shen, P. F. Lang, J. W. Zhao, S. D. Gu, S. Q. Zhang, L. Z. Wang, A. M. Ma, H. S. Zhou, J. J. He, M. Z. Wang, H. L. Ding, M. H. Kelsey, Y. N. Guo, E. Torrence, H. S. Sun, X. C. Lou, J. Oyang, H. Y. Sheng, W. Dunwoodie, R. K. Yamamoto, Y. L. Han, P. Q. Li, M. L. Gao, W. G. Li, Xinglong Li, D. H. Zhang, J. Y. Zhang, X. Q. Li, S. Q. Tang, Pihong Zhao, W. J. Wisniewski, C. S. Yu, C. X. Yu, B. Lowery, W. X. Gu, R. Cowan, E. Prabhakar, Y. B. Chen, W. H. Toki, C. Y. Yang, N. D. Qi, H. M. Liu, A. J. Lankford, Y. F. Lai, H. F. Chen, X. C. Meng, W. F. Wang, J. Standifird, L. J. Pan, Michael J. Fero, Y. Y. Zhang, A. J. S. Smith, Y. S. Zhu, C. M. Yang, W. X. Gao, Z. Z. Du, W. G. Yan, S. J. Sun, E. C. Ma, Lei Zhang, H. L. Zhang, G. Rong, Z. Q. Yu, S.L. Olsen, T. H. Burnett, F. Wang, Z. P. Mao, and Q. Y. Li
Subjects: Physics, Pseudoscalar, Particle physics, Exponential decay
Published: 2020

11. ψ(2S) Hadronic Decays to Vector-Tensor Final States

Author: Dehong Zhang, W. G. Yan, I. Blum, F. Sun, A. J. Lankford, Qiyang Zhang, H. Z. Shi, Y. H. Yu, Chun-Hua Jiang, Q. M. Zhu, J. Z. Bai, X. F. Song, Lei Zhang, Joseph Izen, G. Rong, Y. Z. Huang, P. Wang, L. Z. Wang, W. G. Li, J. Panetta, Y. C. Zhu, Kai Yi, M. Z. Wang, L. P. Zhou, F. C. Porter, Z. G. Zhao, M. H. Kelsey, D. M. Xi, J. G. Lu, J. Yan, Jiming Yang, F. Wang, C. H. Luo, P. L. Wang, Z. Z. Du, H. S. Sun, L. J. Pan, Z. P. Mao, Meng Wang, Y. X. Ye, H. M. Liu, S. T. Xue, S. M. Wang, X. N. Li, X. C. Lou, H. Shen, P. Gratton, J. H. Liu, Q. H. Hu, J. Y. Zhang, T. Hu, F. Lu, Y. H. Xie, Y. G. Xie, Y. K. Que, J. Chen, G. Y. Hu, X. M. Xia, H. M. Hu, Michael Schernau, T. J. Wang, H. L. Ding, Z. W. Chai, W. Yang, J. Nie, J. G. Bian, D. H. Zhang, C. S. Yu, F. A. Harris, H. Y. Sheng, Z. Q. Yu, Y. Y. Zhang, C. Z. Yuan, X. Q. Hu, E. C. Ma, H. L. Zhang, Y. Y. Shao, S. D. Gu, S.L. Olsen, Cunfeng Wei, H. B. Li, C. S. Gao, D. G. Hitlin, J. W. Zhang, J. P. Liu, H. S. Mao, G. P. Chen, W. D. Li, S. Feng, Y. F. Gu, C. X. Yu, Shun-Qi Zhang, M. He, D. L. Shen, N. D. Qi, Y. B. Chen, X. C. Meng, W. J. Xiong, P. F. Lang, Jinxing Zheng, J. D. Huang, J. F. Qiu, Y. Jin, R. B. Li, J. Standifird, C. D. Qian, C. C. Zhang, M. G. Zhao, L. Y. Dong, G. P. Zhou, D. Kong, Cheng-Kui Li, W. X. Gu, Y. N. Guo, B. S. Cheng, W. H. Toki, Y. L. Han, W. R. Zhao, B. W. Shen, L. C. Lu, G. F. Xu, B. Lowery, D. Paluselli, J. He, S. Q. Gao, Z. J. Ke, W. Dunwoodie, X. R. Qi, J. L. Zhang, Y. Zhang, J. C. Li, P. P. Xie, J. C. Chen, R. Malchow, D. Li, C. M. Yang, J. W. Zhao, Y. Yuan, Y. S. Zhu, J. H. Gu, L. S. Zheng, P. Q. Li, X. Y. Shen, Z. P. Zheng, J. Oyang, X. Y. Zhang, R. G. Liu, L. S. Wang, M. H. Ye, G. L. Tong, B. A. Zhuang, M. L. Gao, S. Q. Tang, Wei Li, L. Y. Ding, Y. H. Qu, B. K. Kim, Y. F. Lai, H. F. Chen, S. W. Han, A. M. Ma, H. S. Zhou, H. W. Zhao, C. Y. Yang, Jun-Bing Ma, Xingzhu Cui, Z. T. Yu, D. X. Zhao, B. Y. Zhang, Y. Y. Wang, S. W. Ye, M. Weaver, J. L. Hu, Y. G. Wu, J. J. He, Y. Q. Chen, X. H. Li, J. Y. Lu, C. C. Xu, Y. B. Liu, and Xuan Yang
Subjects: Physics, Particle physics, Hadron, Tensor
Published: 2020

12. AN INVESTIGATION OF THE HYPOTHESES FOR FORMATION OF THE PLATY-RIDGED-POLYGONIZED TERRAIN IN ELYSIUM PLANITIA, MARS

Author: Hongjie Xie, Gregory Michael, Zongyu Yue, Kaichang Di, Y. Y. Shao, H. Gong, and S. Gou
Subjects: Basalt, lcsh:Applied optics. Photonics, geography, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, lcsh:T, Geochemistry, lcsh:TA1501-1820, Terrain, Mars Exploration Program, 01 natural sciences, Crater counting, Arctic ice pack, lcsh:Technology, Elysium, Geologic time scale, lcsh:TA1-2040, Martian surface, 0103 physical sciences, lcsh:Engineering (General). Civil engineering (General), 010303 astronomy & astrophysics, Geomorphology, Geology, 0105 earth and related environmental sciences
Abstract: The origin of the platy-ridged-polygonized (PRP) terrains on Martian surface has long been debated. The terrain has generally been classified as water, pack ice, or basalt lava related flow. The crater counting results of the PRP terrains suggest they are geologically very young; therefore, they are significant in understanding the recent evolution of Mars. This work evaluated the current hypotheses through detailed analysis of the distribution and microtopographies with the High Resolution Imaging Science Experiment (HiRISE) images for the PRP terrains in Elysium Planitia, Mars. Quantitative measurements and statistics of the typical features of the PRP terrains were also made. In addition, we also found an analog site in Tarim Basin in Xinjiang, China. Our results suggest that mud flow is responsible for the formation of the PRP terrains on the Mars surface, although the hypothesis of low-viscosity basalt lava floods cannot be completely excluded. This finding implies that a regional environment suitable for liquid water may have existed in recent geologic time, which has great importance for future Mars scientific exploration.
Published: 2017

13. 180P Real-world (RW) treatment (tx) patterns and outcomes in patients (pts) from Taiwan and Singapore with intermediate and advanced hepatocellular carcinoma (HCC)

Author: N. Irahara, S.P. Choo, D.H-C. Liu, Y-Y. Shao, Vincent E. Gaillard, Shivani K. Mhatre, A. Ferro, and R. Machado
Subjects: Oncology, medicine.medical_specialty, business.industry, Hepatocellular carcinoma, Internal medicine, Medicine, In patient, Hematology, business, medicine.disease
Published: 2020

14. Influencing factors of the drying rate of sludge for solar drying chamber

Author: Y Y Shao, K Yang, Y F Wang, Q C Wang, Y Zhu, Y Q Shao, J Li, and J G Yan
Subjects: Environmental science, Solar drying, Pulp and paper industry
Abstract: In view of the problems of low solar energy utilization efficiency, drying efficiency to be improved and sludge adhesion in the process of solar drying sludge, the research was carried out on the heat collection effect of solar collectors, sludge drying characteristics and sludge drying process, as well as the influence of sludge drying process parameters on the sludge drying rate such as hot air temperature, solar radiation intensity and air substitution,. on the self-built industrial simulation test bench. The results show that: the maximum temperature difference between the inside and the outdoor environment of the solar collectors is 36°C, when the outdoor environment temperature of the developed solar collectors is 13-26°C; the optimum process parameters of sludge drying rate under the experimental conditions that the moisture content of wet sludge is 82.7%, are as follows: the temperature of hot air is 43°C, the maximum solar radiation intensity (about 12:00), the optimal flow rate of air is controlled at 1.2m/s, the thickness of the material layer is 3cm, the large contact between air and materials improves the problem of sludge adhesion. All which provide a theoretical basis for the implementation on the industrialization of solar drying sludge.
Published: 2021

15. Effect of annealing on the structure and magnetic entropy change of Mn1.1Fe0.9P0.8Ge0.2 ribbons

Author: Y. Y. Shao, Aru Yan, Jian Liu, Yaping Zhang, and Mingxiao Zhang
Subjects: Materials science, Thermal hysteresis, Condensed matter physics, Annealing (metallurgy), Magnetic refrigeration, Condensed Matter Physics, Microstructure, Electronic, Optical and Magnetic Materials, Entropy (order and disorder)
Abstract: In this study, we report the effect of annealing temperature on the phase constitution, microstructure and magnetocaloric properties of Mn1.1Fe0.9P0.8Ge0.2 melt-spun ribbons. The secondary phases were formed upon annealing at 1073 and 1173 K, whereas the pure Fe2P-typed phase was formed after a higher temperature annealing at 1273 K. A huge thermal hysteresis of about 40 K width was observed in the first magnetostructural transition cycle. However, during the second cycle it was drastically reduced down almost to zero. A large magnetic entropy change Delta S for ribbons annealed 1273 K is estimated to be 23 J/kg K for a field change of 5T. (C) 2014 Elsevier B.V. All rights reserved.
Published: 2014

16. The BES upgrade

Author: G. S. Huang, X. C. Meng, J. Y. Zhang, J. Standifird, W. G. Yan, J. Oyang, Jun-Bing Ma, J. Schultz, M.H. Kelsey, J. Z. Bai, L. S. Wang, B. Yang, P. Zhang, Y. K. Heng, Y. Y. Zhang, Jun Wang, Chunmei Zhang, J. Li, Joseph Izen, H. Luo, Y. Yuan, Y. S. Zhu, B. W. Shen, Y. Q. Chen, Hao-Ze Chen, Z.R. Wan, Z. Q. Xu, H. Y. Sheng, Jiming Yang, H.G. Han, M. G. Zhao, X.M. Chu, C. X. Yu, Qiyang Zhang, Y. W. Liu, P. Wang, H. S. Mao, Zhengguo Zhao, G. Y. Hu, T. J. Wang, N. D. Qi, W.H. Li, G. P. Chen, M. Mandelkern, C. Z. Yuan, L. Y. Dong, Xinchou Lou, He-Run Yang, S.T. Xu, C.S. Yang, H. Z. Shi, B. S. Cheng, H. M. Liu, Dehong Zhan, X. F. Song, D. P. Stoker, P. F. Lang, M. Weaver, Y.Y. Du, D. Paluselli, R. B. Li, Y.Y. Jiang, D. Kong, H.Y. Lu, Qian Liu, L. Zhang, L. Z. Wang, B. K. Kim, X. Q. Hu, Y. H. Xie, J. H. Gu, Ming-Han Ye, Qi Liu, T. Hu, M. L. Gao, C. C. Xu, H. W. Zhao, Y. K. Que, J. Chen, Li Zhou, H. M. Hu, Cheng-Kui Li, J. C. Chen, R. Malchow, D. X. Zhao, B. Y. Zhang, Jiurong Liu, Y. Z. Sun, Y. Y. Wang, J. Fang, L. S. Zheng, Wei Li, C. D. Qian, M. He, H. B. Li, W. Y. Ding, C. Y. Yang, X. Y. Shen, S. D. Gu, Yuanbo Chen, X. L. Luo, D. L. Shen, D.J. Yang, Z. Z. Du, S. J. Sun, Xingzhu Cui, Z. X. Liu, B. D. Jones, Y. H. Qu, W. J. Xiong, J. L. Hu, Yue-Yuan Zhang, Q. Xie, H. L. Ni, S. Q. Tang, C. M. Yang, G. S. Varner, Y. Jin, G. A. Yang, K. J. Zhu, W. X. Gu, W. H. Toki, X. Xiao, S.C. Zheng, S. Q. Gao, Z. J. Ke, Z. P. Zheng, W. Dunwoodie, Y. F. Lai, P. P. Xie, C.C. Zhong, X. Ju, G. L. Tong, B. A. Zhuang, H. Shen, X. H. Mo, J. F. Qiu, L.G. Mu, Y. P. Tan, P. Q. Li, W. G. Li, J.S. Lou, S. M. Wang, Junguang Lu, Cunfeng Wei, H. L. Ding, S. W. Han, R. G. Liu, Y. J. Sun, Frank C. Porter, Jun Liu, B. Schmid, Q. H. Hu, H. S. Zhou, P. Gratton, J. Panetta, Y. C. Zhu, X. M. Xia, Xingguo Li, F. Sun, Z. W. Chai, J. Zhao, X. F. Zhou, Meng Wang, F. A. Harris, H.C. Bao, D. M. Xi, J. Yan, Lin. Zhang, Y. H. Yu, G. Rong, Jiang Changhui, E. C. Ma, H. L. Zhang, Stephen L. Olsen, D. H. Zhang, C. S. Yu, A. J. Lankford, X. N. Li, D. G. Hitlin, J. H. Liu, Michael Schernau, W. Yang, J. Nie, Y. Y. Shao, C. S. Gao, Jinxing Zheng, J. D. Huang, F. Wang, Z. P. Mao, Q. M. Zhu, H. S. Sun, Z. Q. Yu, Y. N. Guo, F. Y. Li, J. W. Zhang, W. Z. Fang, B. Lowery, Y. B. Chen, Y. L. Han, S. Q. Luo, I. Blum, Y. Z. Huang, Q. Y. Li, J. He, S. Q. Zhang, W.L. Yao, G.P. Zho, L. J. Pan, Bing Zhou, W. R. Zhao, X. R. Qi, Yuehong Xie, H. B. Hu, P. L. Wang, and Xuan Yang
Subjects: Physics, Nuclear and High Energy Physics, Spectrometer, Physics::Instrumentation and Detectors, Detector, Solenoid, Particle accelerator, Computer Science::Digital Libraries, Computer Science::Computers and Society, Particle detector, law.invention, Nuclear physics, Upgrade, Beijing, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Collider, Instrumentation
Abstract: The Beijing Spectrometer (BES) detector is a general purpose solenoid detector at the Beijing Electron Positron Collider (BEPC) in Beijing, China, that has collected large numbers of J/ψ, ψ′, Ds, D and τ events. In this paper, we describe the recent upgrade of the initial BES detector (BESI) to the improved BESII detector.
Published: 2001

17. Measurement of the Total Cross Section for Hadronic Production bye+e−Annihilation at Energies between 2.6–5 GeV

Author: J. Z. Bai, Y. Ban, J. G. Bian, G. P. Chen, H. F. Chen, J. Chen, J. C. Chen, Y. Chen, Y. B. Chen, Y. Q. Chen, B. S. Cheng, X. Z. Cui, H. L. Ding, L. Y. Dong, Z. Z. Du, W. Dunwoodie, C. S. Gao, M. L. Gao, S. Q. Gao, J. H. Gu, S. D. Gu, W. X. Gu, Y. F. Gu, Y. N. Guo, Z. J. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, J. T. He, K. L. He, M. He, Y. K. Heng, G. Y. Hu, H. M. Hu, J. L. Hu, Q. H. Hu, T. Hu, X. Q. Hu, G. S. Huang, Y. Z. Huang, J. M. Izen, C. H. Jiang, Y. Jin, B. D. Jones, X. Ju, Z. J. Ke, D. Kong, Y. F. Lai, P. F. Lang, C. G. Li, D. Li, H. B. Li, J. Li, J. C. Li, P. Q. Li, R. B. Li, W. Li, W. G. Li, X. H. Li, X. N. Li, H. M. Liu, J. Liu, R. G. Liu, Y. Liu, X. C. Lou, F. Lu, J. G. Lu, X. L. Luo, E. C. Ma, J. M. Ma, R. Malchow, H. S. Mao, Z. P. Mao, X. C. Meng, J. Nie, S. L. Olsen, D. Paluselli, L. J. Pan, N. D. Qi, X. R. Qi, C. D. Qian, J. F. Qiu, Y. H. Qu, Y. K. Que, G. Rong, Y. Y. Shao, B. W. Shen, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, H. Z. Shi, X. F. Song, F. Sun, H. S. Sun, Y. Sun, Y. Z. Sun, S. Q. Tang, W. Toki, G. L. Tong, G. S. Varner, F. Wang, L. S. Wang, L. Z. Wang, M. Wang, P. Wang, P. L. Wang, S. M. Wang, T. J. Wang, Y. Y. Wang, C. L. Wei, N. Wu, Y. G. Wu, D. M. Xi, X. M. Xia, P. P. Xie, Y. Xie, Y. H. Xie, G. F. Xu, S. T. Xue, J. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, H. X. Yang, J. Yang, W. Yang, X. F. Yang, M. H. Ye, S. W. Ye, Y. X. Ye, C. S. Yu, C. X. Yu, G. W. Yu, Y. H. Yu, Z. Q. Yu, C. Z. Yuan, Y. Yuan, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, Dehong Zhang, H. L. Zhang, J. Zhang, J. W. Zhang, L. Zhang, L. S. Zhang, P. Zhang, Q. J. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Y. Zhang, D. X. Zhao, H. W. Zhao, Jiawei Zhao, J. W. Zhao, M. Zhao, W. R. Zhao, Z. G. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, B. Q. Zhou, G. P. Zhou, H. S. Zhou, L. Zhou, K. J. Zhu, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, and B. A. Zhuang
Subjects: Physics, Particle physics, Annihilation, Spectrometer, Electron–positron annihilation, Hadron, General Physics and Astronomy, Sigma, Particle accelerator, law.invention, Nuclear physics, Cross section (physics), law, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, Astrophysics::Galaxy Astrophysics
Abstract: Using the upgraded Beijing Spectrometer, we have measured the total cross section for e(+)e(-) annihilation into hadronic final states at center-of-mass energies of 2.6, 3.2, 3.4, 3.55, 4.6, and 5.0 GeV. Values of R, sigma(e(+)e(-)-->hadrons)/sigma(e(+)e(-)-->m(+)m(-)), are determined.
Published: 2000

18. Charmonium Decays to Axial-Vector Plus Pseudoscalar Mesons

Author: E. C. Ma, H. L. Zhang, R. B. Li, G. P. Chen, Michael Schernau, W. Yang, J. Nie, S. W. Han, M. L. Gao, Y. Y. Shao, F. Wang, Z. P. Mao, J. Panetta, Y. C. Zhu, D. Kong, G. W. Yu, S. D. Gu, S. Q. Tang, J. He, H. S. Zhou, C. S. Gao, Jinxing Zheng, Meng Wang, S. M. Wang, Junguang Lu, W. R. Zhao, J. T. He, A. J. Lankford, Dehong Zhang, G. S. Varner, X. R. Qi, Yuehong Xie, Z. Z. Du, Wei Li, X. Q. Hu, H. L. Ding, W. X. Gu, Z. Q. Yu, W. H. Toki, J. W. Zhang, Y. B. Chen, W. G. Li, Y. F. Gu, Qiyang Zhang, Y. W. Liu, P. L. Wang, X. N. Li, Y. F. Lai, Y. H. Xie, C. M. Yang, M. He, Y. N. Guo, D. L. Shen, Q. H. Hu, T. J. Wang, Yong Ban, J. F. Qiu, B. Lowery, Y. L. Han, G. Rong, Z. G. Zhao, P. Wang, Y. H. Qu, H. Shen, M. G. Zhao, Bing Zhou, Z. P. Zheng, P. F. Lang, Y. Jin, He Kai, X. C. Meng, J. Standifird, Stephen L. Olsen, Xingguo Li, G. P. Zhou, J. Chen, S. T. Xue, Jiang Changhui, Cheng-Kui Li, X. L. Luo, D. Li, X. Y. Shen, G. F. Xu, G. L. Tong, B. W. Shen, I. Blum, Q. M. Zhu, G. Y. Hu, J. L. Hu, B. A. Zhuang, Cunfeng Wei, Xuan Zhang, S. Q. Zhang, F. A. Harris, D. H. Zhang, J. Z. Bai, Y. G. Wu, Y. Z. Huang, Y. K. Que, Xuanhong Lou, R. Malchow, H. B. Li, J. Oyang, R. G. Liu, H. S. Mao, C. S. Yu, Hao-Ze Chen, H. S. Sun, H. Z. Shi, F. C. Porter, Jiming Yang, H. W. Zhao, K. J. Zhu, Li Zhou, H. M. Hu, L. S. Zheng, Yuanbo Chen, D. Paluselli, Y. J. Sun, H. Y. Sheng, F. Lu, X. F. Song, F. Sun, L. Y. Dong, B. S. Cheng, C. X. Yu, L. Z. Wang, C. C. Zhang, J. Y. Zhang, M. H. Kelsey, N. D. Qi, Y. Yuan, Y. H. Yu, Y. S. Zhu, P. Gratton, X. M. Xia, J. H. Gu, Y. Q. Chen, Y. Y. Zhang, Yangsen Ye, C. Y. Yang, C. D. Qian, Xuan Yang, C. Z. Yuan, D. M. Xi, L. J. Pan, Jiawei Zhao, J. Yan, L. S. Wang, M. H. Ye, S. Q. Gao, Z. J. Ke, P. P. Xie, P. Q. Li, B. K. Kim, W. G. Yan, J. P. Liu, Jun-Bing Ma, J. Li, Lei Zhang, Joseph Izen, J. W. Zhao, J. G. Bian, W. Dunwoodie, T. Hu, D. G. Hitlin, B. D. Jones, S. W. Ye, H. M. Liu, M. Weaver, D. X. Zhao, B. Y. Zhang, Y. Z. Sun, Y. Y. Wang, and Xingzhu Cui
Subjects: Physics, Particle physics, Meson, Branching fraction, High Energy Physics::Lattice, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, High Energy Physics - Experiment, Pseudoscalar, High Energy Physics - Experiment (hep-ex), High Energy Physics::Experiment, Pseudovector, Mathematical physics
Abstract: A sample of 3.79 million psi(2S) decays observed in the BES detector is used to study the decays of charmonium to axialvector plus pseudoscalar mesons. The branching fraction for psi(2S) to b1pi agrees with expectations. A contrasting behavior between the psi(2S) and the J/psi decays to K1K cannot be accommodated by an adjustment of the singlet-triplet axialvector mixing angle., 7 pages, 3 figures. Changes: excluded one figure, added information, systematic errors increased
Published: 1999

19. Partial wave analysis of J/ψ→γ(ηπ+π−)

Author: H. B. Li, B.S. Zou, C. C. Zhang, F. Sun, J. Nie, Y. C. Zhu, P. L. Wang, H. Shen, Meng Wang, Y. Y. Shao, Y. Jin, C. S. Gao, X. C. Meng, Jun-Bing Ma, S. T. Xue, Jinxing Zheng, Y. Yuan, Y. S. Zhu, G. Y. Hu, Cunfeng Wei, D.V. Bugg, J. C. Li, J. W. Zhang, J. G. Bian, J. T. He, P. P. Xie, G. P. Zhou, M. L. Gao, S. W. Ye, H. W. Zhao, J. F. Qiu, Y. G. Xie, G. P. Chen, Cheng-Kui Li, W. D. Li, J. G. Lu, Y. K. Que, P. Q. Li, H. M. Hu, Z. G. Zhao, Y. H. Yu, X. Q. Hu, Chun-Hua Jiang, C. Y. Yang, P. F. Lang, J. W. Zhao, G. W. Yu, Q. M. Zhu, Jiawei Zhao, S. D. Gu, D. X. Zhao, B. Y. Zhang, K. L. He, S. W. Han, B. W. Shen, E. C. Ma, Y. Y. Wang, Dehong Zhang, J. P. Liu, H. L. Zhang, T. Hu, S. Q. Gao, Z. J. Ke, H. S. Sun, X. N. Li, J. Y. Zhang, D. Li, Y. F. Gu, C. D. Qian, Xuan Yang, Y. B. Chen, H. S. Zhou, X. Y. Zhang, K. J. Zhu, H. Z. Shi, R. G. Liu, X. F. Song, W. G. Li, W. G. Yan, W. X. Gu, Y. J. Sun, H. L. Ding, L. Z. Wang, Y. F. Lai, Y. Ban, Y. Q. Chen, J. He, R. B. Li, M. He, A. V. Sarantsev, H. F. Chen, Y. X. Ye, Lei Zhang, Y. Y. Zhang, D. L. Shen, G. Rong, H. M. Liu, Y. H. Qu, X. H. Li, L. P. Zhou, F. Wang, Z. P. Mao, C. M. Yang, D. H. Zhang, C. S. Yu, D. M. Xi, J. Yan, Z. P. Zheng, X. L. Luo, M. G. Zhao, J. Z. Bai, Q. H. Hu, Z. Q. Yu, J. L. Hu, G. L. Tong, Z. Z. Du, B. A. Zhuang, Jiming Yang, X. M. Xia, T. J. Wang, Y. G. Wu, G. F. Xu, J. C. Chen, S. Q. Zhang, S. M. Wang, L. S. Zheng, H. Y. Sheng, Y. Z. Sun, C. X. Yu, N. D. Qi, X. Y. Shen, W. R. Zhao, Y. B. Liu, X. R. Qi, L. S. Wang, S. Q. Tang, M. H. Ye, H. S. Mao, L. Y. Dong, B. S. Cheng, J. H. Gu, Bing Zhou, F. Lu, Y. H. Xie, C. Z. Yuan, Qiyang Zhang, P. Wang, Y. Z. Huang, Y. N. Guo, Y. L. Han, and Xingzhu Cui
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Partial wave analysis, Electron–positron annihilation, Invariant mass, Atomic physics
Abstract: A partial wave analysis of BES J / ψ → γ ( ηπ + π − ) data has been performed in the mass region 1.1 to 2.0 GeV. A peak is observed due to η (1440) in the ηπ + π − invariant mass distribution; J P =0 − is preferred over 1 + . Its mass is M =1385±7 MeV and it decays into both ησ and a 0 (980) π , with BR[ a 0 (980) π , a 0 → ηπ / ησ ]=0.70±0.12( stat )±0.20( syst ). Destructive interference between the two decay modes is observed. In addition, in the higher ηπ + π − mass region, there is a definite 2 −+ signal, with M =1840±15 MeV and Γ =170±40 MeV and an additional 0 −+ signal at 1760±35 MeV. We also find a possible contribution from a 1 ++ signal decaying dominantly through a 0 (980) π ; its mass and width are fitted to be M =1505±20 MeV and Γ =130 −20 +50 MeV.
Published: 1999

20. ψ(2S)Hadronic Decays to Vector-Tensor Final States

Author: Xuan Yang, Z. Q. Yu, Q. H. Hu, Wei Li, J. H. Liu, J. W. Zhang, Y. S. Zhu, L. J. Pan, C. M. Yang, Y. B. Chen, Michael Schernau, W. Yang, W. G. Yan, F. Lu, L. Y. Ding, Q. J. Zhang, Z. P. Zheng, Lei Zhang, J. Nie, W. G. Li, J. C. Chen, G. L. Tong, B. A. Zhuang, Joseph Izen, T. J. Wang, C. G. Li, S. Feng, C. L. Wei, J. F. Qiu, Kai Yi, Y. Y. Shao, Hao-Ze Chen, Jiming Yang, H. S. Mao, L. Y. Dong, F. Wang, Z. P. Mao, D. X. Zhao, C. S. Gao, Dehong Zhang, B. Y. Zhang, B. S. Cheng, W. Dunwoodie, B. K. Kim, J. D. Huang, J. Panetta, Xuanhong Lou, R. Malchow, Y. Y. Wang, Y. C. Zhu, J. G. Bian, I. Blum, J. H. Gu, C. Z. Yuan, Lu Wang, J. T. He, C. H. Luo, Hai-Bo Li, H. M. Hu, Q. M. Zhu, Meng Wang, R. B. Li, J. M. Ma, Z. T. Yu, Xuan Zhang, Yuanbo Chen, X. C. Meng, J. He, J. Standifird, S. T. Xue, L. S. Zheng, Yi Jin, Y. W. Liu, L. S. Wang, M. H. Ye, P. F. Lang, Y. Z. Huang, Jie Zhang, B. W. Shen, Y. K. Que, S. W. Han, J. Chen, T. Hu, G. Y. Hu, M. Wang, E. C. Ma, C. D. Qian, Li Zhou, H. S. Sun, J. Oyang, J. P. Liu, A. M. Ma, H. S. Zhou, Chunmei Zhang, J. Li, D. G. Hitlin, X. Y. Shen, F. A. Harris, D. Li, H. L. Zhang, P. Gratton, X. M. Xia, Z. W. Chai, G. Rong, C. H. Jiang, Da-Hua Zhang, Y. Yuan, Y. H. Yu, M. G. Zhao, R. G. Liu, F. C. Porter, D. Paluselli, Yangsen Ye, H. W. Zhao, M. L. Gao, B. Lowery, S. W. Ye, S. Q. Tang, S. D. Gu, H. Z. Shi, S. Q. Gao, Z. J. Ke, Junqiang Zhang, P. P. Xie, H. M. Liu, M. Weaver, X. F. Song, J. W. Zhao, G. P. Chen, H. Shen, X. Q. Hu, Z. G. Zhao, W. R. Zhao, P. Q. Li, C. Y. Yang, Y. F. Gu, X. R. Qi, Y. L. Han, Y. H. Qu, Y. F. Lai, Y. Zhang, Yuehong Xie, Shun-Qi Zhang, M. He, D. L. Shen, X. Z. Cui, P. L. Wang, M. H. Kelsey, Stephen L. Olsen, L. C. Lu, W. J. Xiong, Y. Y. Zhang, W. X. Gu, C. S. Yu, W. H. Toki, Jianping Zheng, D. M. Xi, J. Yan, A. J. Lankford, G. F. Xu, F. Sun, X. N. Li, Y. N. Guo, H. L. Ding, Xingguo Li, G. P. Zhou, J. Y. Lu, D. Kong, S. M. Wang, Junguang Lu, Y. H. Xie, C. C. Xu, Y. Q. Chen, J. L. Hu, Y. G. Wu, Z. Z. Du, H. Y. Sheng, C. X. Yu, N. D. Qi, and J. Z. Bai
Subjects: Physics, Particle physics, Branching fraction, Hadron, General Physics and Astronomy, Mathematical physics
Abstract: Author(s): Bai, JZ; Bian, JG; Blum, I; Chai, ZW; Chen, GP; Chen, HF; Chen, J; Chen, JC; Chen, Y; Chen, YB; Chen, YQ; Cheng, BS; Cui, XZ; Ding, HL; Ding, LY; Dong, LY; Du, ZZ; Dunwoodie, W; Feng, S; Gao, CS; Gao, ML; Gao, SQ; Gratton, P; Gu, JH; Gu, SD; Gu, WX; Gu, YF; Guo, YN; Han, SW; Han, Y; Harris, FA; He, J; He, JT; He, M; Hitlin, DG; Hu, GY; Hu, HM; Hu, JL; Hu, QH; Hu, T; Hu, XQ; Huang, JD; Huang, YZ; Izen, JM; Jiang, CH; Jin, Y; Ke, ZJ; Kelsey, MH; Kim, BK; Kong, D; Lai, YF; Lang, PF; Lankford, A; Li, CG; Li, D; Li, HB; Li, J; Li, PQ; Li, RB; Li, W; Li, WD; Li, WG; Li, XH; Li, XN; Liu, HM; Liu, J; Liu, JH; Liu, RG; Liu, Y; Lou, XC; Lowery, B; Lu, F; Lu, JG; Lu, JY; Lu, LC; Luo, CH; Ma, AM; Ma, EC; Ma, JM; Malchow, R; Mao, HS; Mao, ZP; Meng, XC; Nie, J; Olsen, SL | Abstract: The decays of the ψ(2S) into vector plus tensor meson final states have been studied for the first time using the BES detector. We determine upper limits on branching fractions for ψ(2S) decays into ωf2, ρa2, K*0K*02 + c.c., and φf'2(1525) that are, in each case, significantly smaller than the corresponding branching fractions for the J/ψ meson, scaled according to the expectations of perturbative QCD. © 1998 The American Physical Society.
Published: 1998

21. Study of theP-Wave Charmonium StateχcJinψ(2S)Decays

Author: W. R. Zhao, Y. L. Han, Xingzhu Cui, Z. T. Yu, X. R. Qi, Y. Zhang, H. Z. Shi, L. C. Lu, J. F. Qiu, J. L. Hu, X. F. Song, J. L. Zhang, B. K. Kim, F. Sun, L. Z. Wang, Y. Jin, Qiyang Zhang, M. H. Kelsey, J. Panetta, Y. C. Zhu, C. H. Luo, P. L. Wang, Meng Wang, S. D. Gu, P. Wang, X. C. Meng, J. Standifird, S. Q. Zhang, E. C. Ma, H. L. Zhang, R. B. Li, J. G. Lu, G. F. Xu, Y. X. Ye, H. W. Zhao, M. L. Gao, H. S. Mao, T. Hu, G. P. Chen, J. C. Li, L. Y. Dong, P. F. Lang, G. P. Zhou, W. G. Li, D. Li, F. Lu, Kai Yi, G. S. Varner, M. G. Zhao, W. D. Li, S. Q. Tang, B. S. Cheng, Y. Yuan, Y. H. Yu, Y. S. Zhu, Y. N. Guo, D. M. Xi, S. W. Ye, H. Shen, X. Q. Hu, M. Weaver, W. X. Gu, J. Yan, Cheng-Kui Li, Y. B. Chen, C. Y. Yang, X. Y. Zhang, D. G. Hitlin, J. H. Gu, Y. F. Gu, R. G. Liu, J. T. He, M. He, B. W. Shen, Y. F. Lai, H. F. Chen, W. H. Toki, J. G. Bian, D. L. Shen, I. Blum, W. J. Xiong, Cunfeng Wei, J. Z. Bai, J. W. Zhao, Stephen L. Olsen, Z. Q. Yu, Wei Li, F. A. Harris, Chun-Hua Jiang, S. W. Han, H. M. Liu, Y. Z. Huang, C. M. Yang, Z. Z. Du, J. Oyang, Jun-Bing Ma, L. J. Pan, J. W. Zhang, Xuan Yang, L. Y. Ding, Chang-Zheng Yuan, F. C. Porter, T. J. Wang, D. H. Zhang, C. S. Yu, H. B. Li, H. L. Ding, A. M. Ma, H. S. Zhou, D. Paluselli, A. J. Lankford, P. Gratton, D. X. Zhao, L. S. Wang, C. C. Zhang, B. Y. Zhang, M. H. Ye, X. M. Xia, Z. W. Chai, W. Dunwoodie, W. G. Yan, S. Feng, Jiming Yang, J. Y. Zhang, Y. Y. Wang, X. Y. Shen, H. Y. Sheng, Lei Zhang, J. He, C. X. Yu, S. Q. Gao, Z. J. Ke, D. Kong, N. D. Qi, Z. G. Zhao, S. M. Wang, Z. P. Zheng, Y. H. Qu, Joseph Izen, G. Rong, Y. G. Xie, L. P. Zhou, F. Wang, Y. Y. Zhang, Z. P. Mao, Y. K. Que, Q. H. Hu, P. P. Xie, G. L. Tong, B. A. Zhuang, J. Chen, H. M. Hu, J. C. Chen, Xuanhong Lou, R. Malchow, P. Q. Li, L. S. Zheng, Y. G. Wu, C. D. Qian, J. P. Liu, Y. Q. Chen, X. H. Li, J. Y. Lu, Y. H. Xie, C. C. Xu, Y. B. Liu, Q. M. Zhu, M. Z. Wang, H. S. Sun, X. N. Li, B. Lowery, J. H. Liu, Michael Schernau, W. Yang, J. Nie, Y. Y. Shao, C. S. Gao, Jinxing Zheng, J. D. Huang, S. T. Xue, G. Y. Hu, and Dehong Zhang
Subjects: Physics, Stereochemistry, Branching fraction, Quantum mechanics, General Physics and Astronomy
Abstract: Author(s): Bai, JZ; Bian, JG; Blum, I; Chai, ZW; Chen, GP; Chen, HF; Chen, J; Chen, JC; Chen, Y; Chen, YB; Chen, YQ; Cheng, BS; Cui, XZ; Ding, HL; Ding, LY; Dong, LY; Du, ZZ; Dunwoodie, W; Feng, S; Gao, CS; Gao, ML; Gao, SQ; Gratton, P; Gu, JH; Gu, SD; Gu, WX; Gu, YF; Guo, YN; Han, SW; Han, Y; Harris, FA; He, J; He, JT; He, M; Hitlin, DG; Hu, GY; Hu, HM; Hu, JL; Hu, QH; Hu, T; Hu, XQ; Huang, JD; Huang, YZ; Izen, JM; Jiang, CH; Jin, Y; Ke, ZJ; Kelsey, MH; Kim, BK; Kong, D; Lai, YF; Lang, PF; Lankford, A; Li, CG; Li, D; Li, HB; Li, J; Li, PQ; Li, RB; Li, W; Li, WD; Li, WG; Li, XH; Li, XN; Liu, HM; Liu, J; Liu, JH; Liu, RG; Liu, Y; Lou, XC; Lowery, B; Lu, F; Lu, JG; Lu, JY; Lu, LC; Luo, CH; Ma, AM; Ma, EC; Ma, JM; Malchow, R; Mao, HS; Mao, ZP; Meng, XC; Nie, J; Olsen, SL | Abstract: The processes ψ(2S) → I π+ π−, γK+ K−, and γpp¯ have been studied using a sample of 3.79 × 106 ψ(2S) decays. We determine the total width of the χc0 to be γtotχc0 = 14.3 ± 2.0 ± 3.0 MeV. We present the first measurement of the branching fraction B(χc0 → pp¯) = (15.9 ± 4.3 ± 5.3) × 10−5, where the first error is statistical and the second one is systematic. Branching fractions of χc0, 2 → π+ π− and K+ K− are also reported. © 1998 American Physical Society.
Published: 1998

22. Experimental Study ofJ/ψRadiative Decay toπ0π0

Author: J. H. Liu, R. B. Li, J. Nie, Y. Y. Shao, C. S. Gao, D. Li, Jinxing Zheng, J. D. Huang, Q. H. Hu, X. Y. Zhang, R. G. Liu, Y. Yuan, Y. H. Yu, Y. S. Zhu, H. L. Ding, H. Shen, Q. M. Zhu, S. D. Gu, M. Z. Wang, H. S. Sun, X. N. Li, Miao He, Jun-Bing Ma, D. X. Zhao, B. Y. Zhang, Y. Y. Wang, Jie Zhang, L. P. Zhou, F. Wang, Cunfeng Wei, T. J. Wang, Qiyang Zhang, J. Y. Lu, S. T. Xue, D. M. Xi, J. Yan, Z. P. Mao, S. Feng, Y. H. Xie, S. W. Ye, J. P. Liu, H. Z. Shi, X. Q. Hu, Y. F. Gu, J. F. Qiu, X. F. Song, W. X. Gu, Z. Q. Yu, J. G. Lu, G. Y. Hu, C. D. Qian, F. Sun, C. C. Xu, S. M. Wang, L. Z. Wang, Xingzhu Cui, M. L. Gao, T. Hu, P. Wang, D. L. Shen, Y. B. Liu, Z. T. Yu, G. P. Zhou, J. T. He, J. Z. Bai, Y. B. Chen, Y. X. Ye, H. W. Zhao, J. C. Chen, Y. H. Qu, Cheng-Kui Li, W. J. Xiong, X. Y. Shen, Y. F. Lai, P. P. Xie, Chun-Hua Jiang, H. F. Chen, B. W. Shen, Y. Q. Chen, Z. Z. Du, J. G. Bian, Y. C. Zhu, C. Y. Yang, Y. Jin, X. H. Li, C. H. Luo, P. L. Wang, P. Q. Li, Xuan Yang, S. Q. Tang, W. G. Li, Y. G. Xie, Y. K. Que, L. S. Zheng, Meng Wang, H. M. Hu, W. G. Yan, H. M. Liu, Lei Zhang, J. L. Hu, G. Rong, Y. G. Wu, P. F. Lang, F. Lu, J. Y. Zhang, D. H. Zhang, C. S. Yu, J. He, H. Y. Sheng, G. F. Xu, E. C. Ma, H. L. Zhang, C. X. Yu, N. D. Qi, S. W. Han, Dehong Zhang, Y. Y. Zhang, J. C. Li, A. M. Ma, H. S. Zhou, M. G. Zhao, C. Z. Yuan, H. B. Li, X. M. Xia, C. C. Zhang, Z. W. Chai, Z. G. Zhao, J. W. Zhang, Z. J. Guo, S. Q. Gao, Z. J. Ke, Jiming Yang, Y. Z. Huang, J. W. Zhao, Z. P. Zheng, G. P. Chen, W. D. Li, W. R. Zhao, Y. N. Guo, G. L. Tong, B. A. Zhuang, Y. L. Han, L. C. Lu, H. S. Mao, X. R. Qi, L. Y. Dong, Y. Zhang, B. S. Cheng, J. H. Gu, C. M. Yang, Kai Yi, Wei Li, L. S. Wang, M. H. Ye, S. Q. Zhang, and X. C. Meng
Subjects: Nuclear physics, Physics, Electron–positron annihilation, Radiative decay, General Physics and Astronomy, Atomic physics
Published: 1998

23. Evidence for the leptonic decay D→μν

Author: J. Panetta, O. Bardon, S. M. Chen, Y. C. Zhu, E. Soderstrom, Wei Li, K. K. Young, P. L. Wang, X. F. Zhou, H. Y. Sheng, L. J. Pan, C. X. Yu, Q. Liu, Y. Luo, N. D. Qi, Michael J. Fero, Q. Y. Li, C. M. Yang, G. Zioulas, S. Q. Zhang, J. He, Chun-Hua Jiang, R. B. Li, H. S. Mao, S. Z. Lin, W. R. Zhao, H. W. Zhao, J. C. Li, Y. Zhang, S. Whittaker, J. G. Lu, F. A. Harris, L. Jones, T. H. Burnett, D. Kong, Y. P. Tan, S. Q. Tang, Y. H. Zhou, X. R. Shi, Z. P. Zheng, R. J. Wilson, D. H. Zhang, C. S. Yu, B. S. Cheng, G. P. Chen, S. Jin, L. P. Zhou, F. Wang, T. Hu, C. Y. Yang, Z. Z. Du, S. J. Sun, S. M. Wang, R. Cowan, Z. P. Mao, D. Z. Xu, G. L. Tong, W. D. Li, E. Prabhakar, J. H. Gu, X. C. Meng, B. A. Zhuang, F. Li, J. Standifird, H. L. Ni, R. G. Liu, J. Schultz, Xingzhu Cui, A. J. Lankford, B. Schmid, S. H. Kang, P. F. Lang, R. K. Yamamoto, G. P. Zhou, D. Q. Huang, D. G. Hitlin, Z. A. Liu, H. Shen, M. Mandelkern, C. Z. Yuan, Y. L. Han, A. J. S. Smith, Y. Jin, Q. P. Jia, Cunfeng Wei, J. Y. Zhang, E. Torrence, A. Breakstone, L. S. Wang, M. H. Ye, R. S. Xu, C. C. Zhang, S. T. Xue, X. L. Fan, B. K. Kim, P. Gratton, Y. S. Zhu, H. L. Ding, J. Z. Bai, W. G. Yan, Y. K. Que, X. M. Xia, J. W. Zhang, Y. Y. Zhang, M. L. Gao, J. W. Zhao, E. C. Ma, T. J. Wang, Z. Q. Xu, Lei Zhang, X. Q. Hu, Z. Q. Yu, D. Paluselli, Joseph Izen, H. L. Zhang, Y. F. Gu, G. Rong, H. Z. Shi, D. M. Xi, W. J. Wisniewski, Y. B. Chen, J. Yan, D. X. Zhao, B. Y. Zhang, M. He, J. Synodinos, Y. F. Lai, H. F. Chen, D. P. Stoker, J. C. Chen, D. L. Shen, Y. Y. Wang, R. Malchow, X. F. Song, X. Y. Shen, Jun-Bing Ma, J. Quigley, J. Oyang, J. Fang, L. S. Zheng, S. Q. Gao, Z. J. Ke, S. J. Chen, L. Z. Wang, S. D. Gu, G. Y. Hu, B. Lowery, M. H. Kelsey, M. G. Zhao, W. Dunwoodie, F. Sun, Q. M. Zhu, S. W. Han, M. Z. Wang, S. Q. Luo, H. S. Sun, X. N. Li, I. Blum, X. C. Lou, A. M. Ma, H. S. Zhou, J. H. Liu, Y. Z. Huang, Michael Schernau, W. Yang, F. C. Porter, J. Nie, Y. Y. Shao, C. S. Gao, Jinxing Zheng, W. X. Gu, Y. N. Guo, S. L. Olsen, W. H. Toki, H. B. Lan, S. Z. Ye, M. Hatanaka, P. P. Xie, P. Q. Li, W. G. Li, H. M. Liu, P. Wang, Y. B. Liu, Y. Q. Chen, and X. H. Li
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Branching fraction, Electron–positron annihilation, Nuclear physics, Pseudoscalar, D meson, High Energy Physics::Experiment, Center of mass, Exponential decay, Neutrino, Nuclear Experiment
Abstract: Purely leptonic decays of the charged D meson have been studied using the reaction e + e − →D ∗+ D − at a center of mass energy of 4.03 GeV. A search was performed for D→μνμ recoiling against a D0 or D+ which had been reconstructed from its hadronic decay products. A single event candidate was found in the reaction e + e − →D ∗+ D − , where D ∗+ →π + D 0 with the D0→K−π+, and the recoiling D− decaying via D − →μ − ν μ . This yields a branching fraction value B(D→μνμ)=0.08−0.05−0.02+0.16+0.05%, and a corresponding value of the pseudoscalar decay constant fD=300−150−40+180+80 MeV.
Published: 1998

24. Decays of the J/ψ to and final states

Author: Z. Q. Yu, Xingzhu Cui, Z. T. Yu, Y. B. Chen, H. S. Mao, W. H. Zhao, Kai Yi, L. Y. Dong, B. S. Cheng, Qiyang Zhang, S. D. Gu, Y. Q. Chen, Y. G. Xie, Y. K. Que, H. M. Hu, W. X. Gu, Jun-Bing Ma, P. Wang, S. T. Xue, J. C. Chen, X. H. Li, H. Y. Sheng, Y. H. Qu, J. H. Gu, C. X. Yu, G. Y. Hu, C. D. Qian, S. Feng, T. J. Wang, X. C. Meng, N. D. Qi, L. P. Zhou, F. Wang, L. S. Zheng, Xuan Yang, J. Y. Lu, Z. P. Mao, S. M. Wang, Y. Jin, H. Z. Shi, D. Li, J. G. Lu, Y. H. Xie, X. F. Song, W. G. Yan, Wei Li, F. Lu, C. C. Xu, H. W. Zhao, P. F. Lang, G. P. Zhou, S. Q. Zhang, L. Z. Wang, Y. B. Liu, X. Y. Zhang, Dehong Zhang, S. W. Ye, R. G. Liu, M. G. Zhao, X. Y. Shen, Lei Zhang, Cheng-Kui Li, L. Y. Ding, J. Z. Bai, J. L. Hu, Y. Yuan, Y. S. Zhu, Y. Z. Huang, S. Q. Tang, C. Y. Yang, G. Rong, Y. G. Wu, Y. X. Ye, J. F. Qiu, T. Hu, Z. Z. Du, J. He, J. Y. Zhang, L. S. Wang, R. B. Li, C. M. Yang, Y. Y. Zhang, M. H. Ye, C. Z. Yuan, S. W. Han, D. X. Zhao, B. Y. Zhang, H. L. Ding, B. W. Shen, W. R. Zhao, Y. Y. Wang, J. G. Bian, A. M. Ma, H. S. Zhou, D. M. Xi, X. R. Qi, Y. Zhang, J. Yan, Z. P. Zheng, Y. N. Guo, Y. L. Han, L. C. Lu, J. L. Zhang, J. T. He, S. Q. Gao, Z. J. Ke, H. Shen, G. L. Tong, Y. H. Yu, B. A. Zhuang, J. W. Zhao, Cunfeng Wei, Chun-Hua Jiang, Q. H. Hu, J. W. Zhang, Jiming Yang, M. L. Gao, F. Sun, G. P. Chen, W. D. Li, Y. F. Lai, H. F. Chen, D. H. Zhang, C. S. Yu, H. B. Li, E. C. Ma, H. L. Zhang, C. C. Zhang, J. P. Liu, J. C. Li, P. P. Xie, P. Q. Li, W. G. Li, H. M. Liu, Z. G. Zhao, X. M. Xia, Z. W. Chai, X. Q. Hu, Y. F. Gu, M. He, D. L. Shen, W. J. Xiong, J. H. Liu, G. F. Xu, J. Nie, Y. Y. Shao, C. S. Gao, Y. C. Zhu, C. H. Luo, P. L. Wang, Jinxing Zheng, J. D. Huang, Meng Wang, Q. M. Zhu, M. Z. Wang, H. S. Sun, and X. N. Li
Subjects: Physics, Nuclear and High Energy Physics, Angular distribution, Atomic physics, Branching (polymer chemistry)
Abstract: With 7.8 million produced J / ψ events collected by the BES detector at the BEPC, decays J/ψ→Λ Λ ,Λ Λ γ and Λ Λ π 0 are analysed. The branching ratios are measured to be Br (J/ψ→Λ Λ )=(1.08±0.06±0.24)×10 −3 , Br (J/ψ→Λ Λ γ) −4 (90% C.L. ) , Br (J/ψ→Λ Λ π 0 )=(2.3±0.7±0.8)×10 −4 , respectively. The angular distribution for J/ψ→Λ Λ is of the form d N d cos θ =N 0 (1+α cos 2 θ) , from which we determine α =0.52±0.33±0.13.
Published: 1998

25. Search forψ(2S)production ine+e−annihilations at 4.03 GeV

Author: C. C. Zhang, J. G. Lu, H. Z. Shi, T. Hu, C. M. Yang, X. F. Song, Y. Jin, T. J. Wang, P. F. Lang, D. Kong, L. Z. Wang, Qiyang Zhang, Y. Q. Chen, Dehong Zhang, P. P. Xie, M. H. Kelsey, D. G. Hitlin, S. M. Wang, E. C. Ma, X. H. Li, J. Panetta, I. Blum, H. L. Zhang, J. He, Z. P. Zheng, Q. H. Hu, Y. C. Zhu, R. B. Li, P. Wang, S. W. Ye, P. Q. Li, H. W. Zhao, C. H. Luo, Y. X. Ye, X. Y. Shen, M. Weaver, G. P. Zhou, J. W. Zhao, W. G. Li, Cheng-Kui Li, P. L. Wang, M. G. Zhao, D. M. Xi, Meng Wang, Y. Z. Huang, J. Yan, H. S. Mao, J. L. Hu, S. T. Xue, F. C. Porter, D. P. Stoker, J. Oyang, L. Y. Dong, S. Q. Gao, Z. J. Ke, F. Sun, B. S. Cheng, S. W. Han, Y. G. Wu, H. M. Liu, L. P. Zhou, G. Y. Hu, F. Lu, G. L. Tong, D. Paluselli, D. X. Zhao, S. Q. Tang, B. W. Shen, B. A. Zhuang, F. Wang, B. Y. Zhang, X. C. Meng, S. Q. Zhang, A. M. Ma, Z. P. Mao, J. Standifird, J. C. Chen, Xuanhong Lou, R. Malchow, B. Lowery, J. T. He, J. C. Li, H. S. Zhou, Y. G. Xie, Y. K. Que, J. Chen, H. M. Hu, Y. Y. Wang, J. H. Gu, J. Schultz, H. L. Ding, Chun-Hua Jiang, Y. L. Han, F. A. Harris, Jiming Yang, L. S. Zheng, W. Dunwoodie, S. D. Gu, J. H. Liu, Xingzhu Cui, L. C. Lu, J. Y. Lu, Michael Schernau, W. Yang, J. F. Qiu, Stephen L. Olsen, J. Y. Zhang, Kai Yi, M. Mandelkern, L. S. Wang, J. L. Zhang, J. Nie, C. Z. Yuan, M. H. Ye, Y. H. Xie, J. P. Liu, G. P. Chen, Y. Yuan, D. H. Zhang, Z. Q. Yu, Y. H. Yu, Y. S. Zhu, C. C. Xu, M. L. Gao, Y. Y. Shao, H. Shen, C. S. Yu, W. D. Li, D. Li, C. S. Gao, Y. H. Qu, W. X. Gu, Y. B. Liu, Y. Y. Zhang, Jinxing Zheng, J. D. Huang, S. Feng, A. J. Lankford, Y. B. Chen, X. Y. Zhang, W. H. Toki, Wei Li, Cunfeng Wei, R. G. Liu, Q. M. Zhu, Y. F. Lai, L. J. Pan, H. F. Chen, W. R. Zhao, B. Schmid, J. W. Zhang, L. Y. Ding, M. Z. Wang, X. R. Qi, Y. Zhang, Y. N. Guo, H. S. Sun, X. N. Li, H. Y. Sheng, C. X. Yu, N. D. Qi, X. Q. Hu, Y. F. Gu, M. He, D. L. Shen, W. J. Xiong, P. Gratton, Z. Z. Du, X. M. Xia, Z. W. Chai, G. F. Xu, J. Z. Bai, Xuan Yang, W. G. Yan, B. K. Kim, Lei Zhang, Joseph Izen, G. Rong, Jun-Bing Ma, Z. T. Yu, C. D. Qian, C. Y. Yang, J. G. Bian, and H. B. Li
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Photon, Electron, Radiation, law.invention, Nuclear physics, Positron, law, Metastability, High Energy Physics::Experiment, Production (computer science), Collider
Abstract: A search is performed for the production of the ψ(2S) in e^+e^- annihilation at a center-of-mass energy of 4.03 GeV using the BES detector operated at the Beijing Electron Positron Collider (BEPC). The kinematic features of the reconstructed ψ(2S) signal are consistent with its being produced only in association with an energetic photon resulting from initial state radiation (ISR). Limits are placed on ψ(2S) production from the decay of unknown charmonia or metastable hybrids that might be produced in e^+e^- annihilations at 4.03 GeV. Under the assumption that the observed cross section for ψ(2S) production is due entirely to ISR, the partial width Γ_(ee) of the ψ(2S) is measured to be 2.07±0.32keV.
Published: 1998

26. Representations of indefinite quadratic forms

Author: Fei Xu, J. S. Hsia, and Y. Y. Shao
Subjects: Algebra, Definite quadratic form, Arf invariant, Quadratic form, Applied Mathematics, General Mathematics, Binary quadratic form, Quadratic field, Quadratic function, ε-quadratic form, Isotropic quadratic form, Mathematics
Published: 1998

27. Direct measurement ofB(Ds+→φX+)

Author: J. Z. Bai, O. Bardon, I. Blum, A. Breakstone, T. Burnett, G. P. Chen, H. F. Chen, J. Chen, S. J. Chen, S. M. Chen, Y. Chen, Y. B. Chen, Y. Q. Chen, B. S. Cheng, R. F. Cowan, X. Z. Cui, H. L. Ding, Z. Z. Du, W. Dunwoodie, X. L. Fan, J. Fang, C. S. Gao, M. L. Gao, S. Q. Gao, P. Gratton, J. H. Gu, S. D. Gu, W. X. Gu, Y. F. Gu, Y. N. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, M. He, D. G. Hitlin, G. Y. Hu, T. Hu, X. Q. Hu, D. Q. Huang, Y. Z. Huang, J. M. Izen, C. H. Jiang, S. Jin, Y. Jin, L. Jones, S. H. Kang, Z. J. Ke, M. H. Kelsey, B. K. Kim, D. Kong, Y. F. Lai, H. B. Lan, P. F. Lang, A. Lankford, F. Li, J. Li, P. Q. Li, Q. Li, R. B. Li, W. Li, W. D. Li, W. G. Li, X. H. Li, X. N. Li, S. Z. Lin, H. M. Liu, J. Liu, J. H. Liu, Q. Liu, R. G. Liu, Y. Liu, Z. A. Liu, X. C. Lou, B. Lowery, J. G. Lu, J. Y. Lu, S. Luo, Y. Luo, A. M. Ma, E. C. Ma, J. M. Ma, R. Malchow, M. Mandelkern, H. S. Mao, Z. P. Mao, X. C. Meng, H. L. Ni, J. Nie, S. L. Olsen, J. Oyang, D. Paluselli, L. J. Pan, J. Panetta, F. Porter, E. Prabhakar, N. D. Qi, Y. K. Que, G. Rong, M. Schernau, B. Schmid, J. Schultz, Y. Y. Shao, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, H. Z. Shi, E. Soderstrom, X. F. Song, J. Standifird, D. Stoker, F. Sun, H. S. Sun, S. J. Sun, J. Synodinos, Y. P. Tan, S. Q. Tang, W. Toki, G. L. Tong, F. Wang, L. S. Wang, L. Z. Wang, M. Wang, P. Wang, P. L. Wang, S. M. Wang, T. J. Wang, Y. Y. Wang, M. Weaver, C. L. Wei, W. J. Wisniewski, D. M. Xi, X. M. Xia, P. P. Xie, D. Z. Xu, R. S. Xu, Z. Q. Xu, S. T. Xue, J. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, H. Yang, W. Yang, M. H. Ye, S. Z. Ye, K. Young, C. S. Yu, C. X. Yu, Z. Q. Yu, C. Z. Yuan, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. L. Zhang, J. Zhang, J. W. Zhang, L. S. Zhang, S. Q. Zhang, Y. Zhang, Y. Y. Zhang, D. X. Zhao, J. W. Zhao, M. Zhao, W. R. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, G. P. Zhou, H. S. Zhou, L. Zhou, X. F. Zhou, Y. H. Zhou, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, and B. A. Zhuang
Subjects: Hadronic decay, Nuclear physics, Physics, Nuclear and High Energy Physics, Pair production, Luminosity (scattering theory), Branching fraction
Abstract: The absolute inclusive branching fraction of D_s^+→φX^+ has been measured from data collected by the BES detector at a center-of-mass energy of 4.03 GeV, corresponding to an integrated luminosity of 22.3 pb^(-1). At this energy, direct pair production e^+e^-→D_s^+D_s^- has been observed. We have selected D_s candidate events by reconstructing five hadronic decay modes D_s^+→φπ^+, K^(0*)K^+, K^0K^+, f0^(π+) and K^0K^-π^+π^+ and have searched for inclusive φ’s in the recoiling D_s^-. We observed three recoiling φ’s in the 166.4 ± 31.8 D_s candidate events, which leads to the absolute branching fraction B(D_s^+→φX^+)=(17.8(-7.2 -6.3)^(+15.1+0.6)) % and B(D_s-6.3+→φπ-6.3+)=(3.6_(-1.6 -1.3)(^_3.1+0.4) %. [S0556-2821(97)02423-5]
Published: 1998

28. Measurement of the branching fraction ofDsinclusive semileptonic decayDs+→e+X

Author: O. Bardon, J. Y. Lu, Q. P. Jia, J. C. Li, Kai Yi, L. Zhang, B. W. Shen, Michael J. Fero, Y. B. Liu, J. Panetta, P. F. Lang, X. C. Meng, F. A. Harris, C. C. Zhang, S. M. Chen, Y. C. Zhu, Y. Luo, J. T. He, X. Q. Hu, J. Standifird, C. M. Yang, Jun Wang, Y. Q. Chen, X. H. Li, Y. F. Gu, M. L. Gao, S. Z. Lin, W. R. Zhao, M. He, P. L. Wang, Meng Wang, S. D. Gu, X. L. Fan, D. L. Shen, Jun-Bing Ma, H. B. Lan, Y. Zhang, W. J. Xiong, Z. P. Zheng, Dehong Zhang, J. L. Hu, Y. G. Wu, Qiyang Zhang, Y. Jin, L. Jones, Chun-Hua Jiang, Y. B. Chen, E. Soderstrom, B. Lowery, Z. Q. Yu, S. Q. Tang, J. G. Lu, Z. Q. Xu, H. Z. Shi, S. Q. Zhang, J. H. Liu, R. B. Li, Y. H. Zhou, Xiru Huang, X. F. Song, Y. F. Lai, H. L. Ni, J. W. Zhao, Michael Schernau, W. Yang, Wei Li, H. F. Chen, L. Z. Wang, G. L. Tong, G. F. Xu, S. Z. Ye, M. H. Kelsey, J. Nie, S. Jin, Xuan Yang, B. A. Zhuang, T. Hu, S. T. Xue, L. J. Pan, J. Oyang, Q. H. Hu, E. C. Ma, J. F. Qiu, G. Y. Hu, Y. Y. Shao, C. S. Gao, W. X. Gu, H. L. Zhang, W. G. Yan, Jinxing Zheng, W. H. Toki, D. M. Xi, T. H. Burnett, D. G. Hitlin, J. Yan, D. P. Stoker, H. Yang, Q. M. Zhu, P. Gratton, L. P. Zhou, Lei Zhang, F. Wang, C. Y. Yang, X. M. Xia, Z. P. Mao, F. Sun, T. J. Wang, M. Z. Wang, Z. W. Chai, Joseph Izen, G. Rong, H. S. Sun, X. N. Li, Y. S. Zhu, J. Synodinos, J. Yang, L. S. Wang, M. H. Ye, X. Y. Shen, R. S. Xu, Y. H. Qu, E. Prabhakar, J. G. Bian, A. J. Lankford, Y. K. Que, J. Chen, W. Dunwoodie, G. P. Chen, W. D. Li, D. Z. Xu, B. K. Kim, S. W. Han, H. S. Mao, A. M. Ma, H. S. Zhou, Q. Y. Li, J. He, Stephen L. Olsen, B. S. Cheng, D. H. Zhang, C. S. Yu, X. Y. Zhang, R. G. Liu, J. H. Gu, J. Schultz, B. Schmid, K. K. Young, J. P. Liu, S. Q. Gao, Z. J. Ke, W. G. Li, H. Shen, H. M. Liu, Cunfeng Wei, P. P. Xie, P. Q. Li, J. W. Zhang, D. X. Zhao, B. Y. Zhang, Y. Y. Wang, Q. Liu, R. Cowan, S. W. Ye, M. Weaver, Xingzhu Cui, Z. T. Yu, A. Breakstone, Y. N. Guo, Y. L. Han, S. Q. Luo, I. Blum, H. W. Zhao, Y. Z. Huang, F. C. Porter, D. Paluselli, D. Kong, Y. P. Tan, P. Wang, M. G. Zhao, S. M. Wang, X. R. Shi, J. C. Chen, F. Lu, Xuanhong Lou, R. Malchow, J. Fang, L. S. Zheng, G. P. Zhou, Z. Z. Du, S. H. Kang, S. J. Sun, J. Y. Zhang, M. Mandelkern, C. Z. Yuan, Y. Y. Zhang, H. L. Ding, W. J. Wisniewski, Z. A. Liu, J. Z. Bai, H. Y. Sheng, C. X. Yu, and N. D. Qi
Subjects: Hadronic decay, Combinatorics, Physics, Semileptonic decay, Nuclear and High Energy Physics, Meson, Branching fraction
Abstract: Author(s): Bai, JZ; Bardon, O; Bian, JG; Blum, I; Breakstone, A; Burnett, T; Chai, ZW; Chen, GP; Chen, HF; Chen, J; Chen, JC; Chen, SM; Chen, Y; Chen, YB; Chen, YQ; Cheng, BS; Cowan, RF; Cui, XZ; Ding, HL; Du, ZZ; Dunwoodie, W; Fan, XL; Fang, J; Fero, M; Gao, CS; Gao, ML; Gao, SQ; Gratton, P; Gu, JH; Gu, SD; Gu, WX; Gu, YF; Guo, YN; Han, SW; Han, Y; Harris, FA; He, J; He, JT; He, M; Hitlin, DG; Hu, GY; Hu, JL; Hu, QH; Hu, T; Hu, XQ; Huang, XP; Huang, YZ; Izen, JM; Jia, QP; Jiang, CH; Jin, S; Jin, Y; Jones, L; Kang, SH; Ke, ZJ; Kelsey, MH; Kim, BK; Kong, D; Lai, YF; Lan, HB; Lang, PF; Lankford, A; Li, J; Li, PQ; Li, Q; Li, RB; Li, W; Li, WD; Li, WG; Li, XH; Li, XN; Lin, SZ; Lu, F; Liu, HM; Liu, J; Liu, JH; Liu, Q; Liu, RG; Liu, Y; Liu, ZA; Lou, XC; Lowery, B; Lu, JG; Lu, JY; Luo, SQ | Abstract: The absolute inclusive semileptonic branching fraction of the [Formula presented] meson has been measured based on [Formula presented] of [Formula presented] collision data collected with the Beijing Spectrometer at [Formula presented] At this energy, the [Formula presented] are produced in pairs: [Formula presented] We reconstructed [Formula presented] [Formula presented] events in five hadronic decay modes. In the recoil system of these events, several [Formula presented] inclusive semileptonic decays were observed and the branching fraction is estimated to be [Formula presented] © 1997 The American Physical Society.
Published: 1997

29. Structure Analysis of thefJ(1710)in the Radiative DecayJ/ψ→γK+K−

Author: M. L. Gao, Y. L. Han, Y. B. Chen, Xuan Yang, L. C. Lu, Y. F. Lai, Kai Yi, F. Lu, H. F. Chen, L. S. Wang, H. B. Lan, M. H. Ye, W. G. Yan, Y. P. Tan, S. M. Wang, S. Q. Zhang, Jun-Bing Ma, Lei Zhang, S. Q. Luo, H. L. Ni, G. Rong, S. Z. Lin, W. R. Zhao, Y. Zhang, S. D. Gu, S. W. Han, B. W. Shen, Z. Z. Du, Jiming Yang, S. J. Sun, A. M. Ma, X. Q. Hu, H. S. Zhou, G. P. Zhou, S. H. Kang, Q. H. Hu, E. C. Ma, C. Z. Yuan, C. C. Zhang, Z. D. Cheng, X. Y. Zhang, R. G. Liu, H. L. Zhang, Y. F. Gu, J. F. Qiu, Q. J. Li, Wei Li, Y. Z. Huang, S. Q. Tang, J. G. Bian, Qiyang Zhang, D. L. Shen, X. C. Meng, W. J. Xiong, Y. Jin, H. W. Zhao, S. Q. Gao, Z. J. Ke, De. H. Zhang, W. X. Gu, P. Wang, L. Zhang, Z. A. Liu, J. C. Li, F. Sun, H. S. Mao, W. H. Zhao, W. Y. Ding, C. Y. Yang, Z. P. Zheng, P. F. Lang, S. M. Chen, Y. C. Zhu, H. L. Ding, B. S. Cheng, P. L. Wang, Men Wang, G. F. Xu, S. Jin, Y. N. Guo, T. J. Wang, J. H. Gu, Xiru Huang, J. Z. Bai, D. H. Zhang, G. L. Tong, C. S. Yu, Y. Luo, H. Shen, R. B. Li, Z. Q. Xu, Y. H. Qu, J. T. He, B. A. Zhuang, Y. S. Zhu, Q. Liu, R. S. Xu, J. G. Lu, Y. G. Xie, H. Y. Sheng, J. He, Y. H. Zhou, Y. K. Que, Cunfeng Wei, T. Hu, C. X. Yu, X. Y. Shen, N. D. Qi, J. W. Zhang, C. M. Yang, Chun-Hua Jiang, X. M. Xia, Z. W. Chai, Z. Q. Yu, M. G. Zhao, J. H. Liu, Xingzhu Cui, Z. T. Yu, J. Nie, Y. Y. Shao, C. S. Gao, Jinxing Zheng, J. C. Chen, Q. M. Zhu, Miao He, J. Fang, L. S. Zheng, M. Z. Wang, S. W. Ye, H. S. Sun, X. N. Li, L. P. Zhou, F. Wang, D. M. Xi, J. Yan, Z. P. Mao, J. Y. Zhang, D. X. Zhao, B. Y. Zhang, Y. Y. Zhang, Y. Y. Wang, S. Z. Ye, S. T. Xue, G. Y. Hu, H. Z. Shi, X. F. Song, L. Z. Wang, W. G. Li, H. M. Liu, J. P. Liu, P. P. Xie, P. Q. Li, X. L. Fan, J. W. Zhao, G. P. Chen, W. D. Li, Jun Wang, Y. Q. Chen, X. H. Li, J. Y. Lu, Y. B. Liu, J. L. Hu, and Y. G. Wu
Subjects: Nuclear physics, Physics, Structure analysis, Electron–positron annihilation, Radiative decay, General Physics and Astronomy
Published: 1996

30. Studies of topological distributions of inclusive three- and four-jet events inp¯pcollisions ats=1800GeV with the D0 detector

Author: T. McKibben, M. V. S. Rao, Y. Pischalnikov, Ulrich Heintz, M. Sosebee, M. Diesburg, D. Owen, J. Tarazi, M. Bhattacharjee, R. Hirosky, J. Alitti, K. S. Hahn, D. Cutts, M. Abolins, R. Snihur, J. Bantly, N. Varelas, P. Mooney, T. L. Taylor, Andrew White, Greg Landsberg, Andrew Brandt, R. Engelmann, Liu Chen, N. K. Mondal, S. A. Jerger, P. Grudberg, T. McMahon, H.E. Miettinen, H. T. Diehl, Y. E. Gutnikov, A. Leflat, S. M. Chang, Heriberto Castilla-Valdez, T. L. Geld, J. M. Hauptman, J. Kourlas, John Hobbs, A. Boehnlein, M. Paterno, Cecilia Elena Gerber, K. Streets, Vipin Bhatnagar, W. G. Cobau, M. I. Martin, J. S. Kang, P. M. Sood, A. Bischoff, C. Shaffer, D. Cullen-Vidal, N. N. Biswas, M. R. Adams, A. V. Kostritskiy, F. Borcherding, J. Ellison, S. Fuess, Young-Sang Yu, N. A. Roe, Sissel Hansen, J. Borders, Pushpalatha C Bhat, M. Mudan, E. Oltman, Dongliang Zhang, Ph. Mangeot, M. Nicola, R. Partridge, E. Flattum, Jianming Qian, R. L. McCarthy, F. Nang, Peter Nemethy, J. M. Guida, D. Pušeljić, G. Eppley, J. Z.Y. Jiang, G. Griffin, J. G.R. Lima, S. Krzywdzinski, L. T. Goss, V. I. Kochetkov, Sarah Catherine Eno, L. Lueking, Dhiman Chakraborty, B. Gibbard, Elizabeth Gallas, H. Jostlein, M. Mohammadi-Baarmand, A. S. Ito, B. Hoeneisen, Lee Sawyer, R. Astur, J. Yu, H. A. Neal, R. Hatcher, J. Featherly, D. Nešić, Vyacheslav Klyukhin, V. A. Bezzubov, J. P. Negret, R. P. Smith, Richard B. Lipton, H. C. Shankar, Ying Li, P. I. Goncharov, V. Glebov, Marvin Johnson, W. Guryn, Matthew Jones, A. Zylberstejn, A. V. Kozelov, M. H.G. Souza, W. M. Smart, S. Youssef, Tong Hu, Haifeng Li, C. H. Park, H. S. Mao, J. Sculli, H. Johari, H. E. Montgomery, V. Balamurali, A. Taketani, S. Glenn, J. McKinley, T. Heuring, Michael Shupe, Hiroaki Aihara, M. Goforth, E. A. Kozlovski, D. L. Adams, A. Baden, Y. Y. Shao, G. C. Blazey, P. M. Tuts, R. Yamada, Robert Kehoe, D. A. Stoianova, Wagner Carvalho, H. Greenlee, C. Cretsinger, Y. M. Park, S. Margulies, J. Balderston, T. Hu, S. H. Ahn, M. Strovink, E. James, S.A. Kahn, T. Joffe-Minor, Meenakshi Narain, A. Peryshkin, C. Yanagisawa, R. W. Stephens, S. Lami, C. T. Murphy, B. G. Pope, S. Lökös, Sharon Hagopian, Orin I. Dahl, John Rutherfoord, A. K.A. Maciel, D. Lincoln, J. Wang, Harrison Prosper, A. Pluquet, P.F. Ermolov, H. E. Fisk, Eunil Won, P. Bloom, Yanxi Zhang, M.K. Fatyga, M. Demarteau, R. E. Avery, F. Wen, E. W. Anderson, A. Bross, J. A. Wightman, Raymond Brock, Boaz Klima, N. I. Bojko, V. S. Burtovoi, G. Finocchiaro, J. Solomon, William A. Wenzel, I. Bertram, D. Vititoe, W. Y. Chen, R. D. Schamberger, R. K. Shivpuri, S. Gao, Gilvan Alves, A. Klatchko, A. Narayanan, Bruno Mansoulie, Elizaveta Shabalina, S. Durston-Johnson, D. Green, James C. Green, H. L. Melanson, P. Z. Quintas, R. J. Genik, A. L. Read, M. L. Stevenson, F. Lobkowicz, George R. Kalbfleisch, B. S. Acharya, C. L. Kim, S. K. Kim, Serban Protopopescu, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, J. Drinkard, D. Norman, J. S. Hoftun, J. N. Butler, T. Rockwell, P. D. Grannis, R. L. Dixon, M. Tartaglia, H. Piekarz, Michael Rijssenbeek, N. Denisenko, D. P. Stoker, Kaushik De, Y. Fisyak, J. H. Christenson, W. X. Gu, A. A. Mayorov, S. Reucroft, Allen Mincer, B. I. Klochkov, D. Edmunds, E. Neis, B. May, B. Baldin, S. Willis, M. Pang, A. Kernan, Y. Ducros, J. B. Singh, A. Jonckheere, C. Yoshikawa, M. K. Fatyga, D. Buchholz, J. T. White, A. P. Vorobiev, Stephan Linn, V. N. Evdokimov, D.S. Koltick, Andre Sznajder, J. T. Linnemann, P. Padley, Alexey Volkov, M. D. Peters, J. Bendich, Victor Daniel Elvira, P. Tamburello, M. D. Marx, Heng Xu, B. Gobbi, H. D. Wahl, James H Cochran, N. Amos, A. N. Galyaev, Mitchell Wayne, H. Schellman, J. M. Kohli, N.V. Mokhov, J. Yang, N. Oshima, G. E. Forden, A. P. Heinson, S. Chopra, J. Thompson, R. J. Madaras, K. Denisenko, M. Chung, L. Oesch, G. Wang, Alberto Santoro, B. Gómez, Z. H. Zhu, Laurent Chevalier, H. Haggerty, Daria Zieminska, D. Hedin, Stephen Wimpenny, M. A. C. Cummings, A. R. Clark, V. M. Podstavkov, H. Johnstad, S. Fahey, W. E. Cooper, R. Demina, Gregory R Snow, T. Marshall, A. L. Lyon, S. H. Aronson, Shuichi Kunori, K. A. Johns, A. Smith, J. F. Lebrat, Daniel R Claes, C. Boswell, T. Yasuda, M. Fortner, J. Perkins, C. Klopfenstein, S. Abachi, Darien Wood, V. Oguri, R. E. Hall, J. L. González Solís, Nicholas John Hadley, Suman Bala Beri, G. Álvarez, S. Blessing, Scott Snyder, L. T. Kerth, J. Jaques, T. Huehn, R. Markeloff, I. V. Mandrichenko, D. Fein, Erich Varnes, J. Kotcher, J. Womersley, J. M. De Miranda, J. Warchol, R. Hernández-Montoya, A. Milder, C. Murphy, N. Grossman, Jing Li, S. Feher, N. Graf, P. Yamin, Brajesh C Choudhary, S. Mani, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, R. Madden, L. Rasmussen, Peter W. Draper, D. Stewart, S. N. Gurzhiev, Quing Zhu, S. Rusin, L. Markosky, G. Di Loreto, D. Denisov, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, N. Parua, Ting Hu, S. Igarashi, P. R. G. Virador, A. Zieminski, Q. Z. Li-Demarteau, P. A. Rapidis, Randy Ruchti, S. Y. Jun, A. Goldschmidt, T. Fahland, V. Sirotenko, O. V. Eroshin, Phillip Gutierrez, J. Wilcox, J. A. Guida, D. Casey, K. Genser, Rajendran Raja, S. C. Loken, Brad Abbott, Welathantri Gd Dharmaratna, C. S. Mishra, G. Guglielmo, Vasken Hagopian, H. Weerts, S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, S. Grünendahl, A. Para, Sergey Chekulaev, I. Adam, P. Rubinov, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, K. Bazizi, S. R. Dugad, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, and C. K. Jung
Subjects: Quantum chromodynamics, Physics, Quark, Nuclear and High Energy Physics, High Energy Physics::Phenomenology, Monte Carlo method, Tevatron, Jet (particle physics), Topology, law.invention, law, High Energy Physics::Experiment, Fermilab, Collider, Energy (signal processing)
Abstract: The global topologies of inclusive three- and four-jet events produced in $\overline{p}p$ interactions are described. The three- and four-jet events are selected from data recorded by the D0 detector at the Fermilab Tevatron Collider operating at a center-of-mass energy of $\sqrt{s}=1800$ GeV. The measured, normalized distributions of various topological variables are compared with parton-level predictions of tree-level QCD calculations. The parton-level QCD calculations are found to be in good agreement with the data. The studies also show that the topological distributions of the different subprocesses involving different numbers of quarks are very similar and reproduce the measured distributions well. The parton-shower Monte Carlo generators provide a less satisfactory description of the topologies of the three- and four-jet events.
Published: 1996

31. Studies ofξ(2230) inJ/ψRadiative Decays

Author: J. Z. Bai, G. P. Chen, H. F. Chen, S. J. Chen, S. M. Chen, Y. Chen, Y. B. Chen, Y. Q. Chen, B. S. Cheng, X. Z. Cui, H. L. Ding, W. Y. Ding, Z. Z. Du, X. L. Fan, J. Fang, C. S. Gao, M. L. Gao, S. Q. Gao, J. H. Gu, S. D. Gu, W. X. Gu, Y. F. Gu, Y. N. Guo, S. W. Han, Y. Han, J. He, M. He, G. Y. Hu, T. Hu, X. Q. Hu, D. Q. Huang, T. Huang, Y. Z. Huang, C. H. Jiang, S. Jin, Y. Jin, S. H. Kang, Z. J. Ke, Y. F. Lai, H. B. Lan, P. F. Lang, F. Li, J. Li, P. Q. Li, Q. Li, R. B. Li, W. Li, W. D. Li, W. G. Li, X. H. Li, X. N. Li, S. Z. Lin, H. M. Liu, J. Liu, J. H. Liu, Q. Liu, R. G. Liu, Y. Liu, Z. A. Liu, J. G. Lu, J. Y. Lu, S. Q. Luo, Y. Luo, A. M. Ma, E. C. Ma, J. M. Ma, H. S. Mao, Z. P. Mao, X. C. Meng, H. L. Ni, J. Nie, N. D. Qi, Y. K. Que, G. Rong, Y. Y. Shao, B. W. Shen, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, H. Z. Shi, X. F. Song, F. Sun, H. S. Sun, S. J. Sun, Y. P. Tan, S. Q. Tang, G. L. Tong, F. Wang, L. S. Wang, L. Z. Wang, M. Wang, P. Wang, P. L. Wang, S. M. Wang, T. J. Wang, Y. Y. Wang, C. L. Wei, D. M. Xi, X. M. Xia, P. P. Xie, Y. G. Xie, W. J. Xiong, D. Z. Xu, R. S. Xu, Z. Q. Xu, S. T. Xue, J. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, J. Yang, W. Yang, M. H. Ye, S. W. Ye, S. Z. Ye, C. S. Yu, C. X. Yu, Z. Q. Yu, Z. T. Yu, C. Z. Yuan, B. Y. Zhang, C. C. Zhang, D. H. Zhang, H. L. Zhang, J. Zhang, J. W. Zhang, L. Zhang, L. S. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Zhang, Y. Y. Zhang, D. X. Zhao, H. W. Zhao, J. W. Zhao, M. Zhao, P. D. Zhao, W. R. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, G. P. Zhou, H. S. Zhou, Li Zhou, X. F. Zhou, Y. H. Zhou, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, and B. A. Zhuang
Subjects: Physics, Particle physics, Glueball, Radiative transfer, General Physics and Astronomy
Abstract: The BES experiment at the Beijing electron-positron collider has observed the $\ensuremath{\xi}$(2230) signal in ${\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$, ${K}^{+}{K}^{\ensuremath{-}}$, ${K}_{S}^{0}{K}_{S}^{0}$, and $p\overline{p}$ final states with $4.6\ensuremath{\sigma}$, $4.1\ensuremath{\sigma}$, $4.0\ensuremath{\sigma}$, and $3.8\ensuremath{\sigma}$ statistical significances, respectively. The new observations of two nonstrange decay modes of $\ensuremath{\xi}\ensuremath{\rightarrow}{\ensuremath{\pi}}^{+}{\ensuremath{\pi}}^{\ensuremath{-}}$ and $p\overline{p}$ are important evidence for the glueball interpretation of the $\ensuremath{\xi}(2230)$.
Published: 1996

32. Search for Right-HandedWBosons and HeavyW′inpp¯Collisions ats=1.8TeV

Author: S. Abachi, B. Abbott, M. Abolins, B. S. Acharya, I. Adam, D. L. Adams, M. Adams, S. Ahn, H. Aihara, J. Alitti, G. Álvarez, G. A. Alves, E. Amidi, N. Amos, E. W. Anderson, S. H. Aronson, R. Astur, R. E. Avery, A. Baden, V. Balamurali, J. Balderston, B. Baldin, J. Bantly, J. F. Bartlett, K. Bazizi, J. Bendich, S. B. Beri, I. Bertram, V. A. Bezzubov, P. C. Bhat, V. Bhatnagar, M. Bhattacharjee, A. Bischoff, N. Biswas, G. Blazey, S. Blessing, P. Bloom, A. Boehnlein, N. I. Bojko, F. Borcherding, J. Borders, C. Boswell, A. Brandt, R. Brock, A. Bross, D. Buchholz, V. S. Burtovoi, J. M. Butler, W. Carvalho, D. Casey, H. Castilla-Valdez, D. Chakraborty, S.-M. Chang, S. V. Chekulaev, L.-P. Chen, W. Chen, S. Chopra, B. C. Choudhary, J. H. Christenson, M. Chung, D. Claes, A. R. Clark, W. G. Cobau, J. Cochran, W. E. Cooper, C. Cretsinger, D. Cullen-Vidal, M. A. C. Cummings, D. Cutts, O. I. Dahl, K. De, M. Demarteau, R. Demina, K. Denisenko, N. Denisenko, D. Denisov, S. P. Denisov, H. T. Diehl, M. Diesburg, G. Di Loreto, R. Dixon, P. Draper, J. Drinkard, Y. Ducros, S. R. Dugad, S. Durston-Johnson, D. Edmunds, J. Ellison, V. D. Elvira, R. Engelmann, S. Eno, G. Eppley, P. Ermolov, O. V. Eroshin, V. N. Evdokimov, S. Fahey, T. Fahland, M. Fatyga, M. K. Fatyga, J. Featherly, S. Feher, D. Fein, T. Ferbel, G. Finocchiaro, H. E. Fisk, Y. Fisyak, E. Flattum, G. E. Forden, M. Fortner, K. C. Frame, P. Franzini, S. Fuess, E. Gallas, A. N. Galyaev, T. L. Geld, R. J. Genik II, K. Genser, C. E. Gerber, B. Gibbard, V. Glebov, S. Glenn, J. F. Glicenstein, B. Gobbi, M. Goforth, A. Goldschmidt, B. Gómez, P. I. Goncharov, J. L. González Solís, H. Gordon, L. T. Goss, N. Graf, P. D. Grannis, D. R. Green, J. Green, H. Greenlee, G. Griffin, N. Grossman, P. Grudberg, S. Grünendahl, W. X. Gu, G. Guglielmo, J. A. Guida, J. M. Guida, W. Guryn, S. N. Gurzhiev, P. Gutierrez, Y. E. Gutnikov, N. J. Hadley, H. Haggerty, S. Hagopian, V. Hagopian, K. S. Hahn, R. E. Hall, S. Hansen, R. Hatcher, J. M. Hauptman, D. Hedin, A. P. Heinson, U. Heintz, R. Hernández-Montoya, T. Heuring, R. Hirosky, J. D. Hobbs, B. Hoeneisen, J. S. Hoftun, F. Hsieh, Tao Hu, Ting Hu, Tong Hu, T. Huehn, S. Igarashi, A. S. Ito, E. James, J. Jaques, S. A. Jerger, J. Z.-Y. Jiang, T. Joffe-Minor, H. Johari, K. Johns, M. Johnson, H. Johnstad, A. Jonckheere, M. Jones, H. Jöstlein, S. Y. Jun, C. K. Jung, S. Kahn, G. Kalbfleisch, J. S. Kang, R. Kehoe, M. L. Kelly, L. Kerth, C. L. Kim, S. K. Kim, A. Klatchko, B. Klima, B. I. Klochkov, C. Klopfenstein, V. I. Klyukhin, V. I. Kochetkov, J. M. Kohli, D. Koltick, A. V. Kostritskiy, J. Kotcher, J. Kourlas, A. V. Kozelov, E. A. Kozlovski, M. R. Krishnaswamy, S. Krzywdzinski, S. Kunori, S. Lami, G. Landsberg, J-F. Lebrat, A. Leflat, H. Li, J. Li, Y. K. Li, Q. Z. Li-Demarteau, J. G. R. Lima, D. Lincoln, S. L. Linn, J. Linnemann, R. Lipton, Y. C. Liu, F. Lobkowicz, S. C. Loken, S. Lökös, L. Lueking, A. L. Lyon, A. K. A. Maciel, R. J. Madaras, R. Madden, S. Mani, H. S. Mao, S. Margulies, R. Markeloff, L. Markosky, T. Marshall, M. I. Martin, M. Marx, B. May, A. A. Mayorov, R. McCarthy, T. McKibben, J. McKinley, T. McMahon, H. L. Melanson, J. R. T. de Mello Neto, K. W. Merritt, H. Miettinen, A. Mincer, J. M. de Miranda, C. S. Mishra, M. Mohammadi-Baarmand, N. Mokhov, N. K. Mondal, H. E. Montgomery, P. Mooney, H. da Motta, M. Mudan, C. Murphy, C. T. Murphy, F. Nang, M. Narain, V. S. Narasimham, A. Narayanan, H. A. Neal, J. P. Negret, E. Neis, P. Nemethy, D. Nešić, M. Nicola, D. Norman, L. Oesch, V. Oguri, E. Oltman, N. Oshima, D. Owen, P. Padley, M. Pang, A. Para, C. H. Park, Y. M. Park, R. Partridge, N. Parua, M. Paterno, J. Perkins, A. Peryshkin, M. Peters, H. Piekarz, Y. Pischalnikov, V. M. Podstavkov, B. G. Pope, H. B. Prosper, S. Protopopescu, D. Pušeljić, J. Qian, P. Z. Quintas, R. Raja, S. Rajagopalan, O. Ramirez, M. V. S. Rao, P. A. Rapidis, L. Rasmussen, A. L. Read, S. Reucroft, M. Rijssenbeek, T. Rockwell, N. A. Roe, P. Rubinov, R. Ruchti, J. Rutherfoord, A. Santoro, L. Sawyer, R. D. Schamberger, H. Schellman, J. Sculli, E. Shabalina, C. Shaffer, H. C. Shankar, Y. Y. Shao, R. K. Shivpuri, M. Shupe, J. B. Singh, V. Sirotenko, W. Smart, A. Smith, R. P. Smith, R. Snihur, G. R. Snow, S. Snyder, J. Solomon, P. M. Sood, M. Sosebee, M. Souza, A. L. Spadafora, R. W. Stephens, M. L. Stevenson, D. Stewart, D. A. Stoianova, D. Stoker, K. Streets, M. Strovink, A. Sznajder, A. Taketani, P. Tamburello, J. Tarazi, M. Tartaglia, T. L. Taylor, J. Thompson, T. G. Trippe, P. M. Tuts, N. Varelas, E. W. Varnes, P. R. G. Virador, D. Vititoe, A. A. Volkov, A. P. Vorobiev, H. D. Wahl, G. Wang, J. Warchol, G. Watts, M. Wayne, H. Weerts, F. Wen, A. White, J. T. White, J. A. Wightman, J. Wilcox, S. Willis, S. J. Wimpenny, J. V. D. Wirjawan, J. Womersley, E. Won, D. R. Wood, H. Xu, R. Yamada, P. Yamin, C. Yanagisawa, J. Yang, T. Yasuda, C. Yoshikawa, S. Youssef, J. Yu, Y. Yu, D. H. Zhang, Q. Zhu, Z. H. Zhu, D. Zieminska, A. Zieminski, E. G. Zverev, and A. Zylberstejn
Subjects: Physics, Particle physics, Right handed, Tevatron, General Physics and Astronomy, Electron, Lower limit, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Fermilab, Neutrino, Collider, Boson
Abstract: We report on a search for right-handed W bosons (W R ) with mass greater than 200GeV/c 2 . We used data collected with the D0 detector at the Fermilab Tevatron pp collider at √s=1.8TeV to search for W R decays into an electron and a massive right-handed neutrino W R ± >e ± N R . Using the inclusive electron data, we set mass limits independent of the N R decay: m W R >650GeV/c 2 and m W R >720GeV/c 2 at the 95% confidence level, valid for m N R W R and mN R «m W R , respectively. The latter also represents a new lower limit on the mass of a heavy left-handed W boson (W') decaying into ev. In addition, limits on mWR valid for larger values of the N R mass are obtained assuming that NR decays to an electron and two jets.
Published: 1996

33. Search forW̃1Z̃2Production via Trilepton Final States inpp¯Collisions ats=1.8TeV

Author: D. Buchholz, M. Marx, P. Tamburello, T. Huehn, Heng Xu, A. Baden, R. K. Shivpuri, J. A. Wightman, A. M. Smith, G. C. Blazey, N. Grossman, D. R. Claes, R. Yamada, P. Bloom, D. Fein, Gregory R Snow, D. Chakraborty, C. Cretsinger, J. Drinkard, M. Strovink, E. James, M. Bhattacharjee, S. H. Ahn, M. Tartaglia, N. Amos, K. Genser, N. I. Bojko, Orin I. Dahl, John Rutherfoord, J. Borders, S. Margulies, C. Shaffer, D. Cullen-Vidal, A. Goldschmidt, Rajendran Raja, C. Murphy, P.F. Ermolov, Kaushik De, J. Jaques, G. Eppley, E. Amidi, Matthew Jones, J. V.D. Wirjawan, N. N. Biswas, Dongliang Zhang, J. Z.Y. Jiang, J. R. T. de Mello Neto, Don Lincoln, D. Edmunds, E. Neis, L. T. Goss, S. Chopra, C. T. Murphy, S. M. Chang, Robert Hirosky, A. Bischoff, Erich Varnes, J. F. Glicenstein, A. V. Kostritskiy, Sissel Hansen, Brad Abbott, J. M. De Miranda, V. S. Burtovoi, R. Astur, M. Abolins, R. J. Madaras, D. Pušeljić, E. Flattum, Raymond Brock, H. da Motta, G. Finocchiaro, J. G.R. Lima, James C. Green, K. S. Hahn, D. Cutts, S. Protopopescu, E. A. Kozlovski, Greg Landsberg, S. Lami, T. L. Geld, J. Womersley, Boaz Klima, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, D. Nesic, A. S. Ito, Stephen Wimpenny, Andre Sznajder, R. Demina, W. Y. Chen, W. G. Cobau, Ulrich Heintz, J. T. White, H. D. Wahl, M. H.G. Souza, P. Mooney, Gilvan Alves, J. Cochran, M. Sosebee, S. Fahey, V. Oguri, M. A. Shupe, F. Borcherding, T. Marshall, M. D. Peters, H. E. Montgomery, K. Bazizi, D. Norman, Hui Li, S. A. Jerger, N. Parua, Randy Ruchti, C. Klopfenstein, T.R. McMahon, M. Paterno, M. L. Stevenson, Darien Wood, Cecilia Elena Gerber, M. Diesburg, S. Durston-Johnson, E. Oltman, Sándor Lökös, Nicholas John Hadley, George R. Kalbfleisch, D. Owen, S. Willis, M. Pang, J. Yang, J. Alitti, G. Guglielmo, J. Warchol, S. Blessing, Paolo Franzini, J. Tarazi, J. Bantly, Jing Li, N. Denisenko, Sarah Catherine Eno, H. L. Melanson, P. Z. Quintas, J. M. Hauptman, Scott Snyder, J. S. Hoftun, J. N. Butler, B. May, S. Reucroft, V. S. Narasimham, V. M. Podstavkov, L. Oesch, N. K. Mondal, Elizabeth Gallas, L. A. Markosky, H. Jostlein, Vyacheslav Klyukhin, W. X. Gu, H. T. Diehl, A. N. Galyaev, R. Hatcher, M. Fortner, C. Yoshikawa, F. Nang, M. Nicola, P. D. Grannis, H. Piekarz, Richard B. Lipton, Ying Li, S. Krzywdzinski, T. Yasuda, B. Gobbi, J. Perkins, S. K. Kim, Yu. Pischalnikov, V. I. Kochetkov, T. L. Taylor, F. Wen, E. W. Anderson, Andrew White, W. M. Smart, A. A. Mayorov, Jianming Qian, J. Wilcox, V. Sirotenko, K. Denisenko, J. H. Christenson, D. Stewart, Brajesh C Choudhary, M. Demarteau, A. Zylberstejn, Sebastien Jonathan Kahn, S. N. Gurzhiev, A. Boehnlein, O. V. Eroshin, Jan M. Guida, P. M. Sood, David H. Adams, B. Gibbard, M. K. Fatyga, T. G. Trippe, G.E. Forden, Phillip Gutierrez, H. Greenlee, Andrew Brandt, R. Engelmann, H. Johnstad, S. Feher, Heriberto Castilla-Valdez, P. Grudberg, Y. E. Gutnikov, Liu Chen, T. Fahland, W. E. Cooper, A. D. Bross, T. Heuring, R. D. Schamberger, S. C. Loken, Ting Hu, J. Kourlas, J. Sculli, R.E. Avery, Sharon Hagopian, H.E. Miettinen, S. Glenn, J. McKinley, A. Zieminski, Peter Nemethy, J. Ellison, Nikos Varelas, T. Hu, A. K.A. Maciel, D. A. Stoianova, Wagner Carvalho, Allen Mincer, John Hobbs, Quing Zhu, L. Lueking, C. S. Mishra, A. Klatchko, P. A. Rapidis, M. R. Adams, Young-Sang Yu, S. Fuess, M. Mohammadi-Baarmand, S. H. Aronson, Shuichi Kunori, K. A. Johns, P. Padley, N. A. Roe, S. Rusin, B. Baldin, N.V. Mokhov, Vasken Hagopian, Jong-Sung Yu, Alexey Volkov, M. Chung, S. Y. Jun, Alexander Lincoln Read, D. Vititoe, Joan A. Guida, R. Hernández-Montoya, R. J. Genik, A. P. Heinson, H. Weerts, Mitchell Wayne, H. Schellman, J. M. Kohli, Stefan Grünendahl, J. Thompson, G. Di Loreto, R. E. Hall, J. L. González Solís, Hiroaki Aihara, B. Gómez, Z. H. Zhu, Y. Ducros, D. Denisov, C. Boswell, S. Abachi, P. M. Tuts, Meenakshi Narain, Srinivasan Rajagopalan, Thomas Ferbel, A. Peryshkin, R. Partridge, Suman Bala Beri, H. A. Neal, H. C. Shankar, A. Narayanan, M. Goforth, J. B. Singh, Tong Hu, A. L. Spadafora, M.K. Fatyga, P. I. Goncharov, W. Guryn, B. S. Acharya, C. L. Kim, G. Álvarez, D. Hedin, Victor Daniel Elvira, D. Casey, S. Youssef, Robert J. McCarthy, J. Kotcher, D.R. Green, J. Balderston, T. Joffe-Minor, P. C. Bhat, F. Lobkowicz, C. Yanagisawa, Eunil Won, N. Graf, H. E. Fisk, T. Rockwell, Iain Alexander Bertram, R. L. Dixon, K. Streets, Vipin Bhatnagar, Michael Rijssenbeek, J. Solomon, G. Griffin, V. N. Evdokimov, D.S. Koltick, J. T. Linnemann, B. I. Klochkov, C. K. Jung, V. A. Bezzubov, T. McKibben, M. V. S. Rao, J. P. Negret, R. P. Smith, C. H. Park, H. S. Mao, Y. Y. Shao, Harrison Prosper, J. Bendich, B. G. Pope, G. Wang, Alberto Santoro, H. Haggerty, Y. Fisyak, J. Featherly, V. Glebov, Marvin Johnson, A. L. Lyon, A. V. Kozelov, P. Rubinov, R. W. Stephens, D. P. Stoker, M. Mudan, Elizaveta Shabalina, M. A.C. Cummings, B. Hoeneisen, Lee Sawyer, A. Taketani, Y. M. Park, A. Leflat, M. I. Martin, J. S. Kang, P. Yamin, H. Johari, V. Balamurali, S. Mani, R. Madden, L. Rasmussen, Peter W. Draper, A. Kernan, A. Jonckheere, A. P. Vorobiev, Stephan Linn, N. Oshima, Daria Zieminska, J. F. Lebrat, I. Adam, K. W. Merritt, J. F. Bartlett, Robert Kehoe, Yanwen Liu, Robert Snihur, M. L. Kelly, S. R. Dugad, R. Markeloff, Howard Gordon, K. C. Frame, O. Ramirez, L. T. Kerth, S. P. Denisov, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, A. Para, and Sergey Chekulaev
Subjects: Physics, Particle physics, Pair production, Chargino, Luminosity (scattering theory), law, Neutralino, Tevatron, General Physics and Astronomy, Fermilab, Collider, law.invention, Minimal Supersymmetric Standard Model
Abstract: We have searched for associated production of the lightest chargino W 1 and next-to-lightest neutralino Z 2 of the minimal supersymmetric standard model in pp collisions at √s=1.8 TeV using the D0 detector at the Fermilab Tevatron collider. Data corresponding to an integrated luminosity of 12.5±0.7pb -1 were examined for events containing three isolated leptons. No evidence for W 1 Z 2 pair production was found. Limits on s(W 1 Z 2 )B(W 1 →lνZ 1 )B(Z 2 →llZ 1 ) are presented.
Published: 1996

34. Search for Light Top Squarks inpp¯Collisions at√s=1.8TeV

Author: G. Finocchiaro, M. Abolins, S. Durston-Johnson, P. Mooney, M. Nicola, R. Snihur, N. Varelas, N. Denisenko, S. Reucroft, F. Borcherding, S. M. Chang, N. K. Mondal, H. T. Diehl, A. Boehnlein, Andrew White, P. M. Sood, M. Mohammadi-Baarmand, J. Ellison, A. Goldschmidt, C. Yoshikawa, R. L. McCarthy, J. Bendich, J. Yu, E. Oltman, C. K. Jung, P. Grudberg, Matthew Jones, D. Nešić, Haifeng Li, P. Yamin, C. L. Kim, T. McMahon, Y. E. Gutnikov, C. Klopfenstein, Hiroaki Aihara, J. Kourlas, P. I. Goncharov, W. Guryn, T. McKibben, M. V. S. Rao, D. Buchholz, S. Mani, G. Wang, P. M. Tuts, Alberto Santoro, Sarah Catherine Eno, Meenakshi Narain, Peter Nemethy, T. Fahland, R. W. Stephens, A. Peryshkin, P. Bloom, J. A. Wightman, R. J. Madaras, R. Madden, S. Krzywdzinski, Seong Keun Kim, P. Tamburello, L. Rasmussen, Peter W. Draper, John Hobbs, N. I. Bojko, Alexander Vorobiev, Heng Xu, G. Eppley, V. D. Elvira, Vyacheslav Klyukhin, W. Y. Chen, George R. Kalbfleisch, V. I. Kochetkov, Raymond Brock, Boaz Klima, C. Shaffer, J. Wilcox, A. Narayanan, D. Cullen-Vidal, Paolo Franzini, K. Genser, K. Denisenko, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, A. L. Read, Pushpalatha C Bhat, M. Mudan, B. May, Young-Sang Yu, D. Casey, V. S. Narasimham, Thomas G Trippe, W. X. Gu, M. Bhattacharjee, Ying Li, A. Baden, B. Hoeneisen, N. N. Biswas, Lee Sawyer, H. da Motta, J. G.R. Lima, D. Hedin, T. Joffe-Minor, J. Yang, D. Norman, A. A. Mayorov, M. Goforth, M. K. Fatyga, M. L. Stevenson, H. L. Melanson, P. Z. Quintas, A. Zylberstejn, G. C. Blazey, J. Featherly, A. L. Lyon, Shuichi Kunori, A. S. Ito, A. Taketani, C. Yanagisawa, S. P. Denisov, H. E. Fisk, D. Pušeljić, V. Oguri, R. Hirosky, R. Hernández-Montoya, S. Willis, M. Pang, M. Sosebee, V. Glebov, Marvin Johnson, R. Yamada, Gregory R Snow, V. M. Podstavkov, Rajendran Raja, D. Edmunds, Y. Fisyak, I. Bertram, Y. M. Park, M. Fortner, C. Murphy, S.A. Kahn, J. Solomon, A. V. Kozelov, E. Neis, S. H. Ahn, J. S. Hoftun, J. N. Butler, P. D. Grannis, H. Greenlee, J. H. Christenson, B. Gobbi, M. R. Krishnaswamy, F. Lobkowicz, S. C. Loken, J. Alitti, J. Bantly, S. Margulies, M. Demarteau, R. E. Avery, H. Piekarz, A. Klatchko, Brad Abbott, Orin I. Dahl, John Rutherfoord, J. Perkins, A. N. Galyaev, J. Warchol, S. Lami, D. Stocker, Andre Sznajder, F. Hsieh, T. Rockwell, R. L. Dixon, S. A. Jerger, T. L. Taylor, A. Leflat, P.F. Ermolov, B. I. Klochkov, C. Cretsinger, Michael Rijssenbeek, M. D. Marx, A. Bross, Mary Beth Adams, Jasvinder A. Singh, J. M. Hauptman, M. Strovink, H. D. Wahl, E. James, S. Grünendahl, N. A. Roe, S. Chopra, S. Youssef, Andrew Brandt, Ting Hu, M. D. Peters, M. Chung, H. Johnstad, V. N. Evdokimov, T. Yasuda, W. G. Cobau, M. I. Martin, J. S. Kang, Jianming Qian, Heriberto Castilla-Valdez, A. Para, V. S. Burtovoi, Sergey Chekulaev, W. E. Cooper, Gilvan Alves, G. Álvarez, E. Amidi, Serban Protopopescu, J. V.D. Wirjawan, D.S. Koltick, J. R. T. de Mello Neto, J. T. Linnemann, James C. Green, K. S. Hahn, R. Engelmann, Liu Chen, H.E. Miettinen, D. Cutts, A. Zieminski, Tong Hu, Daniel R Claes, V. A. Bezzubov, J. P. Negret, J. Kotcher, P. A. Rapidis, Robert Kehoe, A. Kernan, T. Huehn, Y. Pischalnikov, Ulrich Heintz, Greg Landsberg, H. Jöstlein, A. Jonckheere, R. P. Smith, Elizabeth Gallas, Allan G Clark, D. Fein, T. L. Geld, R. Hatcher, L. Oesch, M. Diesburg, Michael Shupe, L. T. Kerth, J. Balderston, R. Astur, N. Graf, J. Jaques, D. Owen, M. Paterno, T. Heuring, Stephan Linn, Y. Y. Shao, M.K. Fatyga, H. Johari, V. Balamurali, N. Oshima, K. Streets, Vipin Bhatnagar, Ron Lipton, J. Womersley, J. Tarazi, Harrison Prosper, R. Partridge, E. Flattum, G. Griffin, Erich Varnes, W. Smart, K. A. Johns, B. G. Pope, Nikolai Mokhov, S. Feher, Daria Zieminska, R. D. Schamberger, A. Smith, J. F. Lebrat, J. M. De Miranda, D. Lincoln, D. Stewart, S. N. Gurzhiev, C. H. Park, Eunil Won, H. S. Mao, S. Y. Jun, D. L. Adams, Brajesh C Choudhary, Elizaveta Shabalina, B. Baldin, M. H.G. Souza, Y. Ducros, H. E. Montgomery, M. L. Kelly, J. T. White, Howard Gordon, N. Grossman, C. Boswell, N. Amos, J. Borders, K. C. Frame, O. Ramirez, Dongliang Zhang, S. Abachi, Jing Li, J. Z.Y. Jiang, I. Adam, P. Rubinov, K. W. Merritt, L. T. Goss, A. L. Spadafora, J. F. Bartlett, Suman Bala Beri, Yanwen Liu, C. S. Mishra, L. Lueking, E. A. Kozlovski, G. Guglielmo, K. Bazizi, G. E. Forden, A. P. Heinson, H. Haggerty, S. Lökös, Quing Zhu, Vasken Hagopian, H. Weerts, R. E. Hall, J. L. González Solís, C. E. Gerber, S. Fuess, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, V. Sirotenko, S. Fahey, O. V. Eroshin, Phillip Gutierrez, S. Rusin, L. Markosky, Joan A. Guida, N. Parua, G. Di Loreto, D. Denisov, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, S. Igarashi, P. R. G. Virador, Q. Z. Li-Demarteau, Randy Ruchti, A. Bischoff, J. F. Glicenstein, A. V. Kostritskiy, Sissel Hansen, F. Nang, J. M. Guida, Dhiman Chakraborty, Sharon Hagopian, A. K.A. Maciel, F. Wen, E. W. Anderson, Allen Mincer, P. Padley, Alexey Volkov, James H Cochran, Mitchell Wayne, H. Schellman, J. M. Kohli, B. Gibbard, J. Thompson, B. Gómez, Z. H. Zhu, J. Sculli, Shashikant Dugad, T. Hu, R. Demina, Stephen Wimpenny, M. A. C. Cummings, T. Marshall, Darien Wood, Nicholas John Hadley, S. Blessing, Scott Snyder, R. Markeloff, R. K. Shivpuri, J. Drinkard, M. Tartaglia, Kaushik De, S. H. Aronson, and C. T. Murphy
Subjects: Physics, Particle physics, Top quark, Branching fraction, High Energy Physics::Phenomenology, Tevatron, General Physics and Astronomy, law.invention, Charm quark, Standard Model, Nuclear physics, law, Neutralino, High Energy Physics::Experiment, Fermilab, Collider
Abstract: We present a search for pair produced top squarks, the supersymmetric partners of the top quark, using the D0 detector at the Fermilab Tevatron pp collider. We consider a scenario in which the lighter of the two top squarks t 1 decays with 100% branching fraction to a charm quark and the lightest neutralino χ 1 0 yielding a signal of two acollinear jets with missing transverse energy. We observe 3 events while we expect 3.5±1.2 events from the known standard model processes. We exclude at the 95% confidence level a significant region of the m t 1 - m χ 1 0 parameter space. The highest m t 1 value we exclude is 93 GeV/c 2 with a corresponding m χ 1 0 value of 8 GeV/c 2 .
Published: 1996

35. production in p collisions at = 1.8

Author: T. Fahland, J. Wilcox, D. Casey, H. Tong, Rajendran Raja, S. Margulies, Brad Abbott, J. Jaques, K. S. Hahn, D. Cutts, A. Zieminski, P.F. Ermolov, J. M. Hauptman, Greg Landsberg, S. Y. Jun, A. N. Galyaev, F. Wen, E. W. Anderson, M. Sosebee, M. Nicola, Ron Lipton, J. Womersley, B. Baldin, Y. Ducros, S. C. Loken, V. S. Burtovoi, M. Bhattacharjee, T. L. Geld, Natalie A. Roe, C. T. Murphy, M. Paterno, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, S. Lami, Allen Mincer, T. G. Trippe, Nikolai Mokhov, B. May, W. E. Cooper, L. P. Chen, A. Baden, S. Fuess, Daniel R Claes, Jianming Qian, J. Alitti, J. Bantly, R. Hirosky, G. C. Blazey, W. Y. Chen, S. Krzywdzinski, T. McKibben, M. V. S. Rao, N. N. Biswas, B. Gibbard, R. L. McCarthy, S. Feher, Andrew White, S. Glenn, J. McKinley, D. A. Stoianova, R. Yamada, I. Bertram, Sharon Hagopian, George R. Kalbfleisch, J. Bendich, Paolo Franzini, J. Featherly, V. S. Narasimham, V. Glebov, Alexander Vorobiev, G. Finocchiaro, S. H. Ahn, Wagner Carvalho, A. Bischoff, J. Sculli, J. F. Glicenstein, A. V. Kostritskiy, R. J. Madaras, T. McMahon, Y. E. Gutnikov, T. L. Taylor, A. K.A. Maciel, F. Lobkowicz, S. Chopra, John Rutherfoord, Brajesh C Choudhary, J. Kourlas, E. Oltman, Sissel Hansen, A. A. Mayorov, P. A. Rapidis, Heriberto Castilla-Valdez, Marvin Johnson, M. K. Fatyga, A. V. Kozelov, F. Nang, V. I. Kochetkov, Andrew Brandt, R. Engelmann, Mary Beth Adams, N. Amos, John Hobbs, J. Borders, Bobby Samir Acharya, H.E. Miettinen, P. Bloom, J. A. Wightman, S. Durston-Johnson, M. H.G. Souza, H. A. Neal, Young-Sang Yu, H. C. Shankar, B. Gobbi, J. T. Linnemann, A. Jonckheere, C. Klopfenstein, T. Rockwell, J. Drinkard, Raymond Brock, Boaz Klima, N. I. Bojko, Peter Nemethy, Dongliang Zhang, D. Vititoe, H. E. Montgomery, James C. Green, M. Tartaglia, Stephan Linn, N. Denisenko, A. Zylberstejn, J. Z.Y. Jiang, G. Eppley, M. Goforth, Y. Pischalnikov, Ulrich Heintz, W. X. Gu, D. Norman, Kaushik De, M. Mohammadi-Baarmand, S. Reucroft, R. L. Dixon, Michael Rijssenbeek, Jasvinder A. Singh, F. Borcherding, Gordon Watts, H. Jöstlein, J. Yu, S. Willis, M. Pang, R. J. Genik, C. Cretsinger, H. da Motta, J. G.R. Lima, S. H. Aronson, V. Sirotenko, N. Oshima, M. Strovink, D. P. Stoker, E. G. Zverev, H. Greenlee, T. Joffe-Minor, L. T. Goss, R. Snihur, N. Varelas, H. Johnstad, P. Padley, Alexey Volkov, Daria Zieminska, E. James, M. Diesburg, R. D. Schamberger, D. Buchholz, D. Nešić, H. Tao, James H Cochran, C. Yanagisawa, A. S. Ito, A. Klatchko, O. V. Eroshin, C. L. Kim, Hiroaki Aihara, Mitchell Wayne, H. Schellman, J. M. Kohli, S. M. Chang, A. Smith, Stephen Wimpenny, Haifeng Li, J. F. Lebrat, C. Boswell, H. E. Fisk, P. Tamburello, Heng Xu, J. S. Hoftun, J. N. Butler, P. D. Grannis, P. M. Tuts, D. Owen, T. Marshall, H. Ting, A. Bross, Phillip Gutierrez, E. A. Kozlovski, H. Piekarz, R. W. Stephens, Darien Wood, Sarah Catherine Eno, C. Murphy, Meenakshi Narain, Gilvan Alves, A. Peryshkin, R. Astur, Pushpalatha C Bhat, M. Mudan, Gregory R Snow, J. Tarazi, V. N. Evdokimov, V. D. Elvira, T. Heuring, S. Abachi, H. Haggerty, J. Thompson, B. Gómez, Z. H. Zhu, D.S. Koltick, Nicholas John Hadley, Shashikant Dugad, S. A. Jerger, R. Hernández-Montoya, C. Yoshikawa, T. Yasuda, S. Lökös, Serban Protopopescu, S. Blessing, A. Leflat, K. Denisenko, Scott Snyder, S. Youssef, R. Markeloff, A. Narayanan, M. Chung, Vyacheslav Klyukhin, Dhiman Chakraborty, Robert Kehoe, M. A.C. Cummings, B. Hoeneisen, J. Yang, R. Demina, Suman Bala Beri, A. L. Lyon, Shuichi Kunori, Ying Li, J. Balderston, Lee Sawyer, N. Parua, B. I. Klochkov, G. E. Forden, A. P. Heinson, H. S. Mao, R. E. Hall, J. L. González Solís, V. M. Podstavkov, M. Fortner, J. Perkins, J. M. Guida, M. D. Marx, H. D. Wahl, Matthew Jones, S. Igarashi, Q. Z. Li-Demarteau, D. Lincoln, Eunil Won, A. L. Read, D. Edmunds, E. Neis, Andre Sznajder, G. Wang, Alberto Santoro, Seong Keun Kim, A. Taketani, Y. M. Park, S.A. Kahn, M. Demarteau, R. E. Avery, M. D. Peters, W. G. Cobau, M. I. Martin, J. S. Kang, L. Oesch, P. Yamin, J. Solomon, S. Mani, T. Huehn, H. Johari, D. Hedin, V. Balamurali, B. G. Pope, D. Fein, Erich Varnes, R. Madden, J. M. De Miranda, L. Rasmussen, Randy Ruchti, Elizaveta Shabalina, Peter W. Draper, N. Grossman, V. A. Bezzubov, J. P. Negret, J. T. White, Jing Li, R. P. Smith, C. S. Mishra, Michael Shupe, Y. Y. Shao, G. Guglielmo, M.K. Fatyga, Harrison Prosper, L. Markosky, Joan A. Guida, G. Di Loreto, D. Denisov, G. Álvarez, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, J. Kotcher, O. I. Dahl, N. Graf, H. L. Melanson, P. Z. Quintas, D. Stewart, S. N. Gurzhiev, Y. Fisyak, J. H. Christenson, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, Quing Zhu, I. Adam, P. Rubinov, K. W. Merritt, G. Griffin, J. F. Bartlett, C. H. Park, Yanwen Liu, D. L. Adams, L. Lueking, S. Fahey, K. Bazizi, M. L. Kelly, Howard Gordon, K. C. Frame, O. Ramirez, L. T. Kerth, S. P. Denisov, P. Grudberg, V. Oguri, M. L. Stevenson, M. R. Krishnaswamy, F. Hsieh, A. R. Clark, S. Grünendahl, J. Warchol, A. Para, Sergey Chekulaev, C. K. Jung, E. Amidi, J. V.D. Wirjawan, J. R. T. de Mello Neto, M. Abolins, P. Mooney, Elizabeth Gallas, N. K. Mondal, H. T. Diehl, R. Hatcher, A. Boehnlein, P. M. Sood, J. Ellison, A. L. Spadafora, P. I. Goncharov, W. Guryn, R. K. Shivpuri, D. Pušeljić, W. Smart, K. A. Johns, Vasken Hagopian, H. Weerts, C. E. Gerber, and P. R.G. Virador
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Muon, Meson, Tevatron, Astrophysics::Cosmology and Extragalactic Astrophysics, Nuclear physics, Transverse momentum, High Energy Physics::Experiment, Production (computer science), B meson, Impact parameter, Nuclear Experiment
Abstract: We have studied J ψ production in p p collisions at s = 1.8 TeV with the DO detector at Fermilab using μ+μ− data. We have measured the inclusive J ψ production cross section as a function of J ψ transverse momentum, pT. For the kinematic range pT > 8 GeV/c and |η| σ(p p → J ψ + X) · Br ( J ψ → μ + μ − ) = 2.08 ± 0.17( stat) ± 0.46(syst) nb. Using the muon impact parameter we have estimated the fraction of J ψ mesons coming from B meson decays to be fb = 0.35 ± 0.09(stat)±0.10(syst) and inferred the inclusive b production cross section. From the information on the event topology the fraction of nonisolated J ψ events has been measured to be fnonisol = 0.64 ± 0.08(stat)±0.06(syst). We have also obtained the fraction of J ψ events resulting from radiative decays of χc states, fχ = 0.32 ± 0.07(stat)±0.07(syst). We discuss the implications of our measurements for charmonium production processes.
Published: 1996

36. Jet Production via Strongly Interacting Color-Singlet Exchange inpp¯Collisions

Author: S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, A. L. Read, C. Boswell, D. Edmunds, S. Abachi, E. Neis, Suman Bala Beri, Andre Sznajder, M. D. Peters, L. Oesch, T. Joffe-Minor, C. Yanagisawa, H. E. Fisk, C. Klopfenstein, J. Solomon, B. I. Klochkov, J. M. Hauptman, Cecilia Elena Gerber, Jianming Qian, Tong Hu, I. V. Mandrichenko, P. A. Rapidis, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Bischoff, A. V. Kostritskiy, J. Bendich, A. Kernan, A. Jonckheere, Sissel Hansen, C. K. Jung, V. Oguri, R. Hernández-Montoya, Stephan Linn, A. Milder, N. N. Biswas, F. Nang, C. S. Mishra, G. Wang, Alberto Santoro, C. Murphy, N. Oshima, G. Guglielmo, Daria Zieminska, Sharon Hagopian, W. Y. Chen, R. D. Schamberger, A. Smith, J. F. Lebrat, S. Protopopescu, A. K.A. Maciel, Vasken Hagopian, H. Weerts, George R. Kalbfleisch, P. Padley, D. Casey, Alexey Volkov, James H Cochran, Paolo Franzini, P. I. Goncharov, V. S. Narasimham, Thomas G Trippe, W. X. Gu, R. K. Shivpuri, S. Krzywdzinski, W. Guryn, Mitchell Wayne, H. Schellman, J. M. Kohli, J. Thompson, P. Yamin, A. A. Mayorov, V. I. Kochetkov, S. Fuess, R. Snihur, B. Gómez, Z. H. Zhu, M. Abolins, Shashikant Dugad, N. Varelas, M. K. Fatyga, S. Mani, J. Drinkard, Rajendran Raja, M. Tartaglia, P. Mooney, M. Nicola, A. Zylberstejn, H. Greenlee, R. Demina, S. M. Chang, R. Madden, S. C. Loken, E. Amidi, N. K. Mondal, H. T. Diehl, L. Rasmussen, Peter W. Draper, A. Boehnlein, P. M. Sood, Sun Kee Kim, Brad Abbott, A. Bross, M. Bhattacharjee, V. Sirotenko, Kaushik De, Pushpalatha C Bhat, M. Mudan, J. V.D. Wirjawan, J. R. T. de Mello Neto, J. Ellison, F. Wen, E. W. Anderson, B. May, O. V. Eroshin, Phillip Gutierrez, J. Yu, R. L. McCarthy, B. Hoeneisen, Lee Sawyer, Allan G Clark, S. H. Aronson, P. Bloom, J. A. Wightman, S. Fahey, R. Hirosky, Matthew Jones, Allen Mincer, A. Taketani, N. Parua, Ting Hu, T. Huehn, B. Gobbi, N. I. Bojko, J. M. Guida, M.K. Fatyga, C. L. Kim, D. Fein, Y. M. Park, Dhiman Chakraborty, S.A. Kahn, Hiroaki Aihara, Elizabeth Gallas, R. Hatcher, H. L. Melanson, P. Z. Quintas, A. Zieminski, K. S. Hahn, M. Demarteau, R. E. Avery, D. Cutts, J. S. Kang, Erich Varnes, P. M. Tuts, R. W. Stephens, Greg Landsberg, Peter Nemethy, G. Eppley, J. M. De Miranda, S. Rusin, Y. Fisyak, J. H. Christenson, B. Gibbard, T. L. Taylor, V. A. Bezzubov, L. T. Kerth, S. Igarashi, T. L. Geld, J. P. Negret, R. P. Smith, M. L. Stevenson, L. Markosky, Joan A. Guida, Soon Yung Jun, N. Grossman, J. G.R. Lima, J. Sculli, Michael Shupe, M. Paterno, Jasvinder A. Singh, Y. Pischalnikov, Ulrich Heintz, G. Di Loreto, H. Jöstlein, P. R. G. Virador, Q. Z. Li-Demarteau, Y. Y. Shao, T. Hu, F. Borcherding, A. S. Ito, A. Goldschmidt, W. Smart, K. A. Johns, J. S. Hoftun, J. N. Butler, M. Diesburg, H. Johnstad, Laurent Chevalier, K. Streets, Vipin Bhatnagar, M. H.G. Souza, D. Owen, Stephen Wimpenny, M. A. C. Cummings, E. Oltman, T. Yasuda, R. Partridge, Harrison Prosper, D. Denisov, T. McKibben, J. Teiger, Randy Ruchti, E. Flattum, P. D. Grannis, H. Piekarz, J. Tarazi, Heriberto Castilla-Valdez, T. Marshall, G. Griffin, H. E. Montgomery, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, M. V. S. Rao, Sarah Catherine Eno, G. E. Forden, A. P. Heinson, Darien Wood, C. H. Park, Nicholas John Hadley, H. S. Mao, Vyacheslav Klyukhin, D. L. Adams, Alexander Vorobiev, Ying Li, S. Blessing, Scott Snyder, R. Markeloff, N. Amos, R. E. Hall, D. Stewart, S. N. Gurzhiev, J. L. González Solís, A. Baden, G. C. Blazey, D. P. Stoker, R. Astur, M. D. Marx, R. J. Madaras, S. Margulies, T. Fahland, R. Yamada, J. Li, S. Lami, S. H. Ahn, A. Pluquet, H. D. Wahl, P.F. Ermolov, J. Wilcox, T. Heuring, Orin I. Dahl, John Rutherfoord, G. Álvarez, B. Baldin, Mary Beth Adams, D. Hedin, V. S. Burtovoi, Quing Zhu, Y. Ducros, J. Kotcher, I. Bertram, James C. Green, N. Graf, Bruno Mansoulie, F. Lobkowicz, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, D. Buchholz, P. Tamburello, V. N. Evdokimov, J. Warchol, D.S. Koltick, Heng Xu, J. T. Linnemann, Gregory R Snow, B. G. Pope, Victor Daniel Elvira, S. Youssef, Elizaveta Shabalina, Robert Kehoe, J. Balderston, D. Lincoln, Eunil Won, J. T. White, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, Ph. Mangeot, Raymond Brock, Boaz Klima, H. Johari, V. Balamurali, D. Norman, S. Willis, M. Pang, A. N. Galyaev, W. E. Cooper, Daniel R Claes, N. A. Roe, S. Chopra, M. Chung, K. Denisenko, A. L. Lyon, Shuichi Kunori, J. Jaques, Ron Lipton, J. Womersley, J. Featherly, Nikolai Mokhov, V. Glebov, Marvin Johnson, S. Feher, A. V. Kozelov, Brajesh C Choudhary, Bobby Samir Acharya, H. A. Neal, C. T. Murphy, H. C. Shankar, M. Goforth, G. Finocchiaro, C. Cretsinger, S. Durston-Johnson, M. Strovink, E. James, A. Klatchko, N. Denisenko, S. Reucroft, C. Yoshikawa, Gilvan Alves, Andrew White, P. Grudberg, T. McMahon, Y. E. Gutnikov, J. Kourlas, John Hobbs, Young-Sang Yu, D. Pušeljić, S. P. Denisov, M. R. Krishnaswamy, M. Mohammadi-Baarmand, F. Hsieh, S. Grünendahl, D. Nešić, A. Para, Sergey Chekulaev, Haifeng Li, I. Adam, P. Rubinov, K. W. Merritt, A. L. Spadafora, J. F. Bartlett, Yanwen Liu, L. Lueking, Meenakshi Narain, A. Peryshkin, K. Bazizi, A. Narayanan, M. L. Kelly, M. Sosebee, Howard Gordon, K. C. Frame, O. Ramirez, J. Alitti, J. Bantly, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, J. Yang, V. M. Podstavkov, M. Fortner, J. Perkins, J. Borders, Dongliang Zhang, J. Z.Y. Jiang, L. T. Goss, E. A. Kozlovski, H. Haggerty, and S. Lökös
Subjects: Quantum chromodynamics, Physics, Particle physics, High Energy Physics::Phenomenology, Electroweak interaction, Tevatron, General Physics and Astronomy, Multiplicity (mathematics), Jet (particle physics), law.invention, Nuclear physics, law, High Energy Physics::Experiment, Production (computer science), Rapidity, Collider
Abstract: A study of the particle multiplicity between jets with large rapidity separation has been performed using the D\O\ detector at the Fermilab Tevatron $p\bar{p}$ Collider operating at $\sqrt{s}=1.8$\,TeV. A significant excess of low-multiplicity events is observed above the expectation for color-exchange processes. The measured fractional excess is $1.07 \pm 0.10({\rm stat})~{ + 0.25}_{- 0.13}({\rm syst})\%$, which is consistent with a strongly-interacting color-singlet (colorless) exchange process and cannot be explained by electroweak exchange alone. A lower limit of $0.80\%$ (95\% C.L.) is obtained on the fraction of dijet events with color-singlet exchange, independent of the rapidity gap survival probability.
Published: 1996

37. Study of the Strong Coupling Constant UsingW+JetProcesses

Author: J. Drinkard, Jianming Qian, M. Tartaglia, B. May, Kaushik De, I. Bertram, Tong Hu, Bruno Mansoulie, S. H. Aronson, M. Mohammadi-Baarmand, S. Fahey, F. Borcherding, J. Yu, B. Gobbi, F. Lobkowicz, C. L. Kim, Hiroaki Aihara, P. I. Goncharov, P. M. Tuts, R. W. Stephens, W. Guryn, Haifeng Li, T. Rockwell, R. L. Dixon, Michael Rijssenbeek, W. Y. Chen, George R. Kalbfleisch, Paolo Franzini, V. S. Narasimham, Thomas G Trippe, W. X. Gu, D. Buchholz, A. A. Mayorov, E. Oltman, M. K. Fatyga, Jasvinder A. Singh, Meenakshi Narain, A. Peryshkin, H. Johnstad, T. Yasuda, J. Jaques, S. Rusin, P. Yamin, S. Krzywdzinski, J. Bendich, P. Tamburello, Heng Xu, V. I. Kochetkov, G. Eppley, S. Mani, B. Gibbard, Ron Lipton, V. N. Evdokimov, J. Warchol, D.S. Koltick, Sarah Catherine Eno, L. Markosky, A. Narayanan, M. Bhattacharjee, J. Sculli, A. Zylberstejn, M. L. Kelly, Howard Gordon, K. C. Frame, Sharon Hagopian, J. Womersley, C. Cretsinger, O. Ramirez, M. Strovink, R. Madden, L. Rasmussen, G. Wang, Alberto Santoro, Gregory R Snow, P. Padley, Peter W. Draper, A. K.A. Maciel, Pushpalatha C Bhat, Alexey Volkov, M. Sosebee, Elizabeth Gallas, H. Greenlee, T. Hu, Y. Pischalnikov, Ulrich Heintz, R. Astur, T. Heuring, J. G.R. Lima, H. Jöstlein, E. James, Laurent Chevalier, Seong Keun Kim, G. Di Loreto, V. A. Bezzubov, Vyacheslav Klyukhin, Nikolai Mokhov, J. P. Negret, R. Hirosky, Ying Li, S. P. Denisov, R. P. Smith, James H Cochran, R. Hatcher, W. A. Wenzel, L. T. Kerth, M. A.C. Cummings, J. Alitti, Stephen Wimpenny, J. Bantly, B. Hoeneisen, Lee Sawyer, Mitchell Wayne, A. Bross, C. K. Jung, M. R. Krishnaswamy, H. Schellman, J. M. Kohli, S. Feher, B. Baldin, M. Diesburg, A. Baden, Michael Shupe, F. Hsieh, D. Owen, T. Marshall, Gilvan Alves, D. Pueljić, T. Joffe-Minor, G. C. Blazey, C. Yanagisawa, J. Tarazi, M. H.G. Souza, Darien Wood, Nicholas John Hadley, Andrew Brandt, R. Engelmann, Liu Chen, H.E. Miettinen, S. Grünendahl, A. Para, J. Thompson, Sergey Chekulaev, B. Gómez, Z. H. Zhu, W. Smart, K. A. Johns, T. L. Taylor, R. Yamada, S. H. Ahn, Y. Y. Shao, Serban Protopopescu, J. Wang, Harrison Prosper, A. Taketani, Y. M. Park, Brajesh C Choudhary, S.A. Kahn, H. E. Montgomery, S. A. Jerger, Raymond Brock, Boaz Klima, A. S. Ito, Shashikant Dugad, M. D. Marx, H. D. Wahl, S. Blessing, Y. Ducros, H. E. Fisk, J. Solomon, M. Demarteau, R. E. Avery, I. Adam, P. Rubinov, D. Denisov, J. Teiger, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, D. P. Stoker, Orin I. Dahl, John Rutherfoord, Scott Snyder, R. Markeloff, M. Abolins, R. Snihur, N. Varelas, R. Demina, A. Leflat, S. Fuess, K. W. Merritt, N. Amos, S. Margulies, S. Lami, A. L. Spadafora, G. E. Forden, A. P. Heinson, A. Pluquet, Mary Beth Adams, P. A. Rapidis, W. G. Cobau, M. I. Martin, C. Shaffer, D. Cullen-Vidal, K. Genser, V. Oguri, P. Mooney, S. M. Chang, Heriberto Castilla-Valdez, K. Denisenko, J. F. Bartlett, N. A. Roe, S. Chopra, M. Chung, P.F. Ermolov, Yanxi Zhang, D. Norman, D. Neić, Yanwen Liu, F. Wen, A. Kernan, A. Jonckheere, N. N. Biswas, E. W. Anderson, N. K. Mondal, H. T. Diehl, J. Yang, Victor Daniel Elvira, L. Lueking, B. I. Klochkov, V. Sirotenko, Stephan Linn, R. E. Hall, V. S. Burtovoi, J. S. Kang, J. L. González Solís, James C. Green, A. Boehnlein, P. M. Sood, P. Bloom, J. A. Wightman, J. Ellison, A. L. Lyon, Shuichi Kunori, M. Mudan, K. Bazizi, R. J. Madaras, N. Oshima, K. S. Hahn, T. Huehn, Daria Zieminska, S. Willis, M. Pang, N. I. Bojko, O. V. Eroshin, J. Kotcher, J. Featherly, D. Cutts, V. M. Podstavkov, R. D. Schamberger, A. Smith, D. Fein, Allen Mincer, G. Lvarez, J. F. Lebrat, V. Glebov, Marvin Johnson, A. V. Kozelov, S. Gao, Andrew White, Greg Landsberg, C. T. Murphy, Erich Varnes, D. Stewart, S. N. Gurzhiev, J. M. De Miranda, M. Fortner, Phillip Gutierrez, M. L. Stevenson, T. L. Geld, A. Bischoff, J. Perkins, P. Grudberg, T. McMahon, M. Nicola, E. Amidi, J. V.D. Wirjawan, Y. E. Gutnikov, Ph. Mangeot, A. V. Kostritskiy, M. Paterno, J. R. T. de Mello Neto, Allan G Clark, D. Hedin, G. Finocchiaro, N. Graf, J. Kourlas, N. Grossman, Sissel Hansen, J. M. Guida, J. S. Hoftun, J. N. Butler, P. D. Grannis, John Hobbs, F. Nang, H. Piekarz, Dhiman Chakraborty, Quing Zhu, Jing Li, A. N. Galyaev, S. Durston-Johnson, S. Youssef, C. S. Mishra, Young-Sang Yu, M.K. Fatyga, N. Denisenko, S. Reucroft, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, J. T. Linnemann, C. Yoshikawa, Robert Kehoe, M. Goforth, J. Balderston, R. L. McCarthy, J. Borders, G. Guglielmo, C. Klopfenstein, D. Lincoln, Eunil Won, H. L. Melanson, P. Z. Quintas, W. E. Cooper, Daniel R Claes, Dongliang Zhang, A. Klatchko, J. Z.Y. Jiang, I. V. Mandrichenko, Vasken Hagopian, Y. Fisyak, J. H. Christenson, H. Johari, V. Balamurali, R. Hernández-Montoya, A. Milder, L. T. Goss, Peter Nemethy, B. G. Pope, H. Weerts, C. Murphy, K. Streets, Vipin Bhatnagar, R. Partridge, E. Flattum, G. Griffin, N. Parua, C. H. Park, Elizaveta Shabalina, H. S. Mao, Matthew Jones, D. L. Adams, E. A. Kozlovski, J. T. White, H. Haggerty, S. Lökös, S. Igarashi, P. R. G. Virador, T. McKibben, M. V. S. Rao, Q. Z. Li-Demarteau, Alexander Vorobiev, Randy Ruchti, C. Boswell, S. Abachi, Suman Bala Beri, S. Glenn, J. McKinley, D. A. Stoianova, Wagner Carvalho, D. Vititoe, R. J. Genik, A. L. Read, D. Edmunds, E. Neis, Andre Sznajder, M. D. Peters, L. Oesch, A. Goldschmidt, T. Fahland, J. Wilcox, Ting Hu, A. Zieminski, S. Y. Jun, J. A. Guida, D. Casey, Rajendran Raja, S. C. Loken, Brad Abbott, Welathantri Gd Dharmaratna, J. M. Hauptman, Cecilia Elena Gerber, and R. K. Shivpuri
Subjects: Physics, Quantum chromodynamics, Coupling constant, Particle physics, Computer Science::Information Retrieval, Hadron, Tevatron, General Physics and Astronomy, Order (ring theory), Parton, Jet (particle physics), Coupling (probability), Nuclear physics, High Energy Physics::Experiment, Nuclear Experiment
Abstract: The ratio of the number of {ital W}+1 jet to {ital W}+0 jet events is measured with the D0 detector using data from the 1992--93 Tevatron Collider run. For the {ital W}{r_arrow}{ital e}{nu} channel with a minimum jet {ital E}{sub {ital T}} cutoff of 25 GeV, the experimental ratio is 0.065{plus_minus}0.003(stat){plus_minus}0.007(syst). Next-to-leading order QCD predictions for various parton distributions agree well with each other and are all over 1 standard deviation below the measurement. Varying the strong coupling constant {alpha}{sub {ital s}} in both the parton distributions and the partonic cross sections simultaneously does not remove this discrepancy. {copyright} {ital 1995} {ital The} {ital American} {ital Physical} {ital Society}.
Published: 1995

38. Direct measurement of theDsbranching fraction to φπ

Author: Z. P. Zheng, C. C. Zhang, D. Paluselli, G. L. Tong, B. A. Zhuang, Xingzhu Cui, E. Torrence, H. Shen, J. C. Chen, Xuanhong Lou, R. Malchow, H. S. Mao, S. D. Gu, Q. Liu, J. Panetta, Y. P. Tan, S. M. Wang, S. M. Chen, B. S. Cheng, X. C. Meng, J. Standifird, A. J. S. Smith, A. Breakstone, Y. S. Zhu, Y. C. Zhu, J. Fang, L. S. Zheng, Jun-Bing Ma, J. Synodinos, R. B. Li, D. Q. Huang, J. W. Zhang, H. L. Ding, Z. Q. Xu, J. H. Gu, J. Quigley, P. Gratton, P. L. Wang, X. F. Zhou, J. Schultz, S. J. Chen, X. M. Xia, D. X. Zhao, B. Y. Zhang, G. Zioulas, Pihong Zhao, W. X. Zhao, Y. Y. Wang, X. L. Fan, D. P. Stoker, W. X. Gu, S. Q. Tang, W. Dunwoodie, W. H. Toki, W. G. Li, M. L. Gao, M. G. Zhao, W. J. Wisniewski, S. H. Kang, I. Blum, O. Bardon, E. Soderstrom, J. C. Li, M. Mandelkern, C. Z. Yuan, Q. J. Li, Wei Li, D. Z. Xu, Y. Jin, H. Y. Sheng, S. Whittaker, C. M. Yang, W. X. Gao, R. Cowan, J. G. Lu, L. J. Pan, F. A. Harris, L. Jones, H. C. Cui, Y. H. Zhou, Y. B. Chen, H. B. Lan, C. X. Yu, Jiang Changhui, H. M. Liu, R. G. Liu, G. P. Zhou, Y. F. Lai, R. S. Xu, H. Z. Shi, S. Q. Gao, N. D. Qi, R. K. Yamamoto, R. J. Wilson, H. F. Chen, W. F. Wang, B. Schmid, T. Hu, J. Y. Zhang, X. F. Song, Y. K. Que, Q. M. Zhu, P. Wang, P. F. Lang, F. Li, Li Zhou, Z. Z. Du, B. K. Kim, L. S. Wang, M. H. Ye, J. W. Zhao, Y. Y. Zhang, M. H. Kelsey, S. J. Sun, D. G. Hitlin, X. Q. Li, Y. Z. Huang, L. Z. Wang, M. Z. Wang, K. R. He, H. S. Sun, J. Oyang, X. Q. Hu, X. N. Li, H. L. Ni, C. Y. Yang, D. M. Xi, S. Z. Ye, J. Yan, M. Hatanaka, Y. F. Gu, J. H. Liu, W. G. Yan, X. R. Shi, Michael Schernau, W. Yang, M. He, D. L. Shen, J. Nie, Z. A. Liu, F. C. Porter, H. B. Yao, S. T. Xue, Y. Y. Shao, F. Sun, C. S. Gao, G. Y. Hu, Jinxing Zheng, Lei Zhang, J. Z. Bai, D. H. Zhang, G. P. Chen, Joseph Izen, T. J. Wang, W. D. Li, S. L. Olsen, C. S. Yu, G. Rong, P. P. Xie, E. Prabhakar, B. Lowery, A. J. Lankford, S. W. Han, P. Q. Li, A. M. Ma, H. S. Zhou, X. Y. Shen, Y. N. Guo, Y. L. Han, E. C. Ma, H. L. Zhang, Y. Q. Chen, Z. Q. Yu, S. Z. Lin, W. R. Zhao, Q. P. Jia, Y. Zhang, H. B. Hu, Y. B. Liu, S. Q. Zhang, Michael J. Fero, J. He, T. H. Burnett, F. Wang, and Z. P. Mao
Subjects: Nuclear physics, Physics, Particle physics, Pion, Pair production, Meson, law, Branching fraction, Electron–positron annihilation, Yield (chemistry), Pi, Collider, law.invention
Abstract: The Beijing Spectrometer (BES) Collaboration has observed exclusive pair production of D_s mesons at the Beijing Electron-Positron Collider (BEPC) at a center-of-mass energy of 4.03 GeV. The D_s mesons are detected in the φπ^+, K¯^(*0)K^+, and K¯^0K^+ decay modes; two fully reconstructed events yield the value (3.9_(-1.9-1.1)^(+5.1+1.8))% for the D_s branching fraction to φπ. This is the first direct, model-independent measurement of this quantity.
Published: 1995

39. Lenalidomide as second-line therapy for advanced hepatocellular carcinoma (HCC): biomarker exploration

Author: Y-Y. Shao, C-H. Hsu, B-B. Chen, C. Hsu, Z. Lin, M-J. Wang, and A-L Cheng
Subjects: 0301 basic medicine, Oncology, Second-line therapy, medicine.medical_specialty, business.industry, Hematology, medicine.disease, 03 medical and health sciences, 030104 developmental biology, 0302 clinical medicine, 030220 oncology & carcinogenesis, Hepatocellular carcinoma, Internal medicine, medicine, Biomarker (medicine), business, Lenalidomide, medicine.drug
Published: 2016

40. A measurement of decay widths

Author: H. S. Mao, Z. D. Cheng, W. H. Zhao, S. Q. Tang, B. S. Cheng, Y. P. Tan, S. M. Wang, S. D. Gu, Y. B. Liu, J. H. Gu, P. Wang, J. H. Liu, W. Yang, X. C. Meng, Pihong Zhao, W. X. Gu, H. Y. Sheng, H. L. Ding, T. J. Wang, Y. Z. Huang, J. Nie, C. X. Yu, S. H. Kang, H. Shen, C. Z. Yuan, Ya-Nan Guo, S. M. Chen, Y. C. Zhu, Y. Y. Shao, Wei Li, P. L. Wang, X. F. Zhou, Z. Q. Yu, S. T. Xue, C. S. Gao, H. P. Hu, N. D. Qi, Jinxing Zheng, L. J. Pan, R. S. Xu, Y. S. Zhu, G. Y. Hu, Z. A. Liu, Y. G. Xie, Y. K. Que, J. Y. Zhang, Q. Liu, Y. Q. Chen, X. Y. Shen, G. P. Zhou, X. X. Xie, Y. B. Chen, Q. M. Zhu, F. Li, H. L. Ni, M. Z. Wang, R. B. Li, L. S. Wang, Cunfeng Wei, Y. Y. Zhang, M. H. Ye, H. S. Sun, X. N. Li, K. R. He, S. W. Han, J. Z. Bai, P. F. Lang, Y. N. Guo, W. Z. Fang, D. X. Zhao, B. Y. Zhang, H. B. Lan, W. G. Li, J. W. Zhang, Y. L. Han, Y. Y. Wang, Jiang Changhui, S. Z. Ye, Z. Z. Du, H. M. Liu, D. Z. Xu, A. M. Ma, H. S. Zhou, Q. Y. Li, J. He, J. Fang, L. S. Zheng, X. Y. Zhang, R. G. Liu, L. P. Zhou, Z. P. Mao, P. P. Xie, D. H. Ma, P. Q. Li, M. G. Zhao, Y. Jin, S. Q. Luo, S. Q. Zhang, G. P. Chen, Xingzhu Cui, F. Sun, C. M. Yang, W. X. Gao, W. D. Li, S. Q. Gao, Z. J. Ke, X. L. Fan, Z. P. Zheng, J. W. Zhao, W. G. Yan, Lei Zhang, G. Rong, Bing Zhou, S. Z. Lin, W. R. Zhao, X. Q. Hu, D. M. Xi, J. Yan, Y. F. Gu, G. L. Tong, M. He, B. A. Zhuang, Y. Zhang, D. L. Shen, M. L. Gao, J. C. Li, S. J. Chen, Y. F. Lai, H. F. Chen, J. G. Lu, Y. H. Zhou, T. Hu, X. M. Xia, D. Q. Huang, C. C. Zhang, S. Jin, Z. Q. Xu, Jun-Bing Ma, H. C. Cui, H. Z. Shi, D. H. Zhang, C. S. Yu, X. F. Song, E. C. Ma, H. L. Zhang, L. Z. Wang, Q. M. Li, B. W. Shen, W. Y. Ding, and C. Y. Yang
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Muon, Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Hadron, Detector, High Energy Physics::Experiment, Electron, Atomic physics, Resonance (particle physics)
Abstract: The cross sections for e+e− → hadrons, e+e−, μ+μ− have been measured in the vicinity of the J Ψ resonance using the BES detector operated at BEPC. The partial widths for J Ψ to hadrons, electrons, muons and the total width have been determined to be Γh = 74.1 ± 8.1 keV, Γe = 5.14 ± 0.39 keV, Γμ = 5.13 ± 0.52 keV, and Γ = 84.4 ± 8.9 keV, respectively.
Published: 1995

41. Inclusiveμandb-Quark Production Cross Sections inpp¯Collisions at√s=1.8TeV

Author: N. A. Roe, S. Chopra, N. I. Bojko, M. Chung, D. Buchholz, I. Manning, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, C. Cretsinger, M. Strovink, E. James, Gilvan Alves, Y. H. Zhou, P. Tamburello, Heng Xu, G. E. Forden, A. P. Heinson, I. Bertram, N. N. Biswas, G. Finocchiaro, J. Featherly, D. Pizzuto, V. Glebov, Marvin Johnson, R. P. Xie, Gregory R Snow, A. V. Kozelov, J. Bendich, J. Yu, R. E. Hall, Laurent Chevalier, Stephen Wimpenny, S. Margulies, Bruno Mansoulie, F. Lobkowicz, J. R. Hubbard, W. Guryn, M. Tartaglia, J. Jaques, S. Lami, J. A. Guida, D. Casey, A. Pluquet, P.F. Ermolov, B. Pi, S. P. Denisov, P. Grudberg, A. Baden, S. Fuess, Ron Lipton, L. Z. Wang, R. L. Dixon, Yanxi Zhang, Michael Rijssenbeek, T. Huehn, T. Marshall, J. S. Hoftun, J. N. Butler, P. D. Grannis, J. Womersley, M. Sosebee, V. S. Burtovoi, C. L. Kim, G. C. Blazey, Ulrich Heintz, D. Fein, J. M. Hauptman, A. Kernan, H. Piekarz, M. R. Krishnaswamy, Raymond Brock, Boaz Klima, O. Ramirez, V. N. Evdokimov, Elizabeth Gallas, D. P. Eartly, Sharon Hagopian, H. Jöstlein, A. Jonckheere, J. Bantly, D.S. Koltick, Cecilia Elena Gerber, Darien Wood, V. A. Bezzubov, Mark Raymond Adams, S. Feher, Yu Fisyak, J. P. Negret, Hiroaki Aihara, G. Álvarez, Erich Varnes, M. Diesburg, Stephan Linn, J. M. De Miranda, V. Sirotenko, O. V. Eroshin, R. Yamada, D. Owen, A. L. Spadafora, Nicholas John Hadley, D. Schmid, R. P. Smith, D. Norman, Michael Shupe, A. K.A. Maciel, C. K. Jung, Yi Xia, D. Stewart, Jianming Qian, A. R. Clark, S. Grünendahl, A. Milder, M. Bhattacharjee, Y. Y. Shao, P. Padley, Mingming Yang, Alexey Volkov, P. M. Tuts, R. J. Madaras, J. Skeens, N. Oshima, Andrew Brandt, Brajesh C Choudhary, A. Para, R. Engelmann, S. H. Ahn, Rajendran Raja, C. Murphy, H. Schellman, Harrison Prosper, R. L. McCarthy, R. Hirosky, M. L. Good, S. Blessing, S. Willis, M. Pang, R. W. Stephens, Y. S. Zhu, E. Oltman, Tong Hu, Daria Zieminska, H.E. Miettinen, Sergey Chekulaev, N. Grossman, Bobby Samir Acharya, H. A. Neal, J. Borders, H. C. Shankar, B. Baldin, Scott Snyder, J. Kotcher, M. H.G. Souza, R. D. Schamberger, Matthew Jones, A. Smith, J. F. Lebrat, J. T. Linnemann, T. Joffe-Minor, Dongliang Zhang, H. E. Montgomery, R. Markeloff, Jing Li, M. Goforth, S. Igarashi, C. Yanagisawa, James H Cochran, Q. Z. Li-Demarteau, Mitchell Wayne, John Rutherfoord, Haifeng Li, Y. Ducros, D. Hedin, H. E. Fisk, J. Z.Y. Jiang, E. W. Anderson, K. Denisenko, C. Zeitnitz, Pushpalatha C Bhat, M. Mudan, Peter Nemethy, R. E. Lanou, Randy Ruchti, S. Krzywdzinski, M. Abolins, A. Zinchenko, J. Solomon, Brad Abbott, T. L. Taylor, J. M. Kohli, Meenakshi Narain, A. Peryshkin, W. Y. Chen, P. Mooney, D. Pueljić, O. I. Dahl, G. Eppley, V. I. Kochetkov, A. Klatchko, M.K. Fatyga, Z. R. Wolf, Vasken Hagopian, D. P. Stoker, T. G. Trippe, S. C. Loken, R. Snihur, B. I. Klochkov, J. G.R. Lima, M. A.C. Cummings, N. K. Mondal, H. T. Diehl, A. Zylberstejn, H. Weerts, A. Boehnlein, X. C. Meng, Heriberto Castilla-Valdez, J. Thompson, A. L. Lyon, Paolo Franzini, V. S. Narasimham, Welathantri Gd Dharmaratna, Shuichi Kunori, A. S. Ito, B. Hoeneisen, Lee Sawyer, W. E. Cooper, H. Greenlee, B. Gómez, P. M. Sood, G. Rahal-Callot, P. R.G. Virador, J. Ellison, Alberto Santoro, L. P. Chen, T. Behnke, Daniel R Claes, A. Bross, M. L. Kelly, Victor Daniel Elvira, A. A. Mayorov, S. M. Chang, James C. Green, B. Gibbard, A. Taketani, Howard Gordon, J. M.R. Roldan, Serban Protopopescu, M. K. Fatyga, Quing Zhu, F. Borcherding, K. C. Frame, L. T. Kerth, S.A. Kahn, C. T. Murphy, M. D. Marx, I. Adam, P. Rubinov, W. Smart, K. A. Johns, S. Youssef, Zhedong Zhang, R. Demina, M. Demarteau, R. E. Avery, K. W. Merritt, H. D. Wahl, E. A. Kozlovski, J. Sculli, A. Efimov, J. F. Bartlett, Robert Kehoe, J. Balderston, D. Xiao, C. Klopfenstein, D. Neić, Yanwen Liu, L. Lueking, S. Fahey, J. M. Guida, R. B. Li, Peter Loch, Sarah Catherine Eno, P. Yamin, Eunil Won, Dhiman Chakraborty, D. C. Wang, S. Durston-Johnson, R. K. Shivpuri, H. Haggerty, S. Mani, N. Denisenko, S. Reucroft, R. Madden, C. Yoshikawa, L. Rasmussen, Peter W. Draper, S. Rusin, L. Markosky, Vyacheslav Klyukhin, J. Drinkard, D. Denisov, J. P. Cussonneau, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, Ying Li, Kaushik De, T. Fahland, S. Lökös, Allen Mincer, P. Z. Quintas, Christina Gao, S. H. Aronson, J. Wilcox, K. S. Hahn, Ting Hu, A. Bischoff, D. Cutts, J. F. Glicenstein, E. Amidi, S. Fredriksen, Y. K. Que, Sissel Hansen, A. Zieminski, F. Nang, J. H. Christenson, J. Yang, J. R. T. de Mello Neto, K. Bazizi, C. Milner, Greg Landsberg, Juliet Lee-Franzini, S. Y. Jun, K. Streets, Vipin Bhatnagar, T. L. Geld, R. Partridge, V. M. Podstavkov, E. Flattum, V. Oguri, A. Serna, W.A. Wenzel, C. H. Park, M. L. Stevenson, H. S. Mao, D. L. Adams, M. Paterno, J. Warchol, M. Fortner, B. May, B. Gobbi, Jasvinder A. Singh, H. Johnstad, T. Yasuda, R. Astur, T. Heuring, O. Callot, N. Amos, S. Glenn, J. McKinley, D. A. Stoianova, R. J. Genik, C. Boswell, S. Abachi, Suman Bala Beri, A. L. Read, D. Edmunds, M. D. Peters, L. Oesch, N. Mokhov, B. G. Pope, Elizaveta Shabalina, J. Teiger, J. T. White, S. A. Jerger, A. Leflat, W. G. Cobau, M. I. Martin, J. S. Kang, Ph. Mangeot, N. Graf, H. Johari, V. Balamurali, T. McKibben, M. V. S. Rao, Alexander Vorobiev, Andrew White, J. Kourlas, John Hobbs, F. Stocker, and J. A. Wightman
Subjects: Nuclear physics, Physics, Particle physics, Muon, Meson, Hadron, General Physics and Astronomy, Order (ring theory), Production (computer science), Elementary particle, Quarkonium, Bottom quark
Abstract: We report a measurement of the inclusive muon and {ital b}-quark production cross sections in {ital p{bar p}} collisions at {radical}{ital s}=1.8 TeV using the D0 detector at the Fermilab Tevatron collider. The inclusive muon spectrum extends over the kinematic range {vert_bar}{ital y}{sup {mu}}{vert_bar}{lt}0.8 and 3.5{lt}{ital p}{sub {ital T}}{sup {mu}}{lt}60GeV/{ital c}, and is well described by the expected contributions from various known sources. The {ital b}-quark production cross section for {vert_bar}{ital y}{sup {ital b}}{vert_bar}{lt}1.0 and {ital p}{sup {ital b}}{sub {ital T}}{gt}6GeV/{ital c} is extracted, and agrees with next-to-leading order QCD predictions within the experimental and theoretical uncertainties.
Published: 1995

42. Search for High Mass Top Quark Production inpp¯Collisions ats=1.8 TeV

Author: I. Bertram, P. Padley, Alexey Volkov, Bruno Mansoulie, James H Cochran, F. Lobkowicz, L. Z. Wang, N. A. Roe, S. Chopra, R. L. Dixon, Michael Rijssenbeek, Mitchell Wayne, H. Schellman, J. M. Kohli, M. Chung, V. N. Evdokimov, J. Warchol, D.S. Koltick, R. Astur, T. Heuring, J. Thompson, B. Gómez, J. A. Guida, D. Casey, R. L. McCarthy, J. Skeens, M. L. Good, A. L. Read, Alberto Santoro, J. Borders, V. A. Bezzubov, J. P. Negret, R. P. Smith, C. Cretsinger, Dongliang Zhang, J. Z.Y. Jiang, Michael Shupe, Y. Y. Shao, B. Baldin, Harrison Prosper, J. M. Hauptman, Cecilia Elena Gerber, Rajendran Raja, S. Krzywdzinski, D. Edmunds, D. Hedin, R. Demina, Y. Ducros, Haifeng Li, V. I. Kochetkov, M. Strovink, E. James, P. Yamin, Brad Abbott, Jianming Qian, Peter Nemethy, G. Eppley, J. Jaques, Andrew White, A. Zylberstejn, Meenakshi Narain, A. Peryshkin, C. T. Murphy, Welathantri Gd Dharmaratna, B. G. Pope, C. Shaffer, D. Cullen-Vidal, K. Genser, A. Goldschmidt, N. N. Biswas, X. C. Meng, A. Baden, Ron Lipton, D. C. Wang, H. L. Melanson, P. Z. Quintas, J. Womersley, B. May, Tong Hu, A. Bischoff, J. F. Glicenstein, Sissel Hansen, M. D. Peters, Laurent Chevalier, G. C. Blazey, Zhedong Zhang, S. Mani, E. A. Kozlovski, R. Yamada, J. Yu, G. Finocchiaro, J. Bendich, H. Greenlee, J. Kourlas, S. Fuess, J. R. Hubbard, J. G.R. Lima, Gilvan Alves, Victor Daniel Elvira, J. H. Christenson, Stephen Wimpenny, F. Nang, Nikolai Mokhov, S. H. Ahn, H. Haggerty, M. Bhattacharjee, A. S. Ito, B. Pi, S. Durston-Johnson, A. Bross, John Hobbs, Elizabeth Gallas, M. Sosebee, S. Lökös, B. Gobbi, R. Madden, L. Oesch, C. L. Kim, C. Milner, T. Marshall, L. Rasmussen, John Rutherfoord, R. Hirosky, Yu Fisyak, N. Denisenko, S. Reucroft, T. Joffe-Minor, Hiroaki Aihara, C. Yanagisawa, S. Feher, Peter W. Draper, Serban Protopopescu, K. Bazizi, D. P. Eartly, Sharon Hagopian, J. Bantly, D. Stewart, A. L. Spadafora, T. Fahland, S. Youssef, A. K.A. Maciel, C. Yoshikawa, P. M. Tuts, T. Huehn, W. Guryn, Robert Kehoe, H. E. Fisk, Mary Beth Adams, J. Solomon, D. Schmid, Yi Xia, Andrew Brandt, R. Engelmann, E. Oltman, J. Wilcox, K. Streets, Vipin Bhatnagar, Brajesh C Choudhary, Darien Wood, Nicholas John Hadley, Jasvinder A. Singh, O. Ramirez, J. Yang, V. M. Podstavkov, Elizaveta Shabalina, K. Denisenko, D. Fein, Pushpalatha C Bhat, M. Mudan, M. A.C. Cummings, B. Hoeneisen, R. Partridge, E. Flattum, R. W. Stephens, J. Balderston, H.E. Miettinen, T. G. Trippe, S. C. Loken, Ting Hu, Ulrich Heintz, S. Blessing, H. Johnstad, T. Yasuda, R. B. Li, E. W. Anderson, T. L. Taylor, M. Fortner, A. L. Lyon, Shuichi Kunori, Erich Varnes, James C. Green, S. Glenn, J. McKinley, B. I. Klochkov, A. Zieminski, F. Borcherding, Scott Snyder, J. Featherly, D. Pizzuto, D. A. Stoianova, H. Jöstlein, R. Markeloff, R. K. Shivpuri, Bobby Samir Acharya, H. A. Neal, H. C. Shankar, C. H. Park, Eunil Won, F. Stocker, H. S. Mao, Lee Sawyer, J. T. Linnemann, M. H.G. Souza, A. Taketani, J. M. De Miranda, V. Sirotenko, V. Glebov, Marvin Johnson, M. Abolins, A. Zinchenko, O. V. Eroshin, J. A. Wightman, M. Diesburg, D. L. Adams, R. E. Lanou, D. Owen, Allen Mincer, W. Y. Chen, M. Goforth, P. Mooney, J. Drinkard, G. Rahal-Callot, Christina Gao, N. I. Bojko, A. V. Kozelov, S. Y. Jun, R. Snihur, M. Tartaglia, D. Puaeljić, W. Smart, K. A. Johns, S.A. Kahn, Kaushik De, M.K. Fatyga, Paolo Franzini, V. S. Narasimham, M. Demarteau, R. E. Avery, Z. R. Wolf, Heriberto Castilla-Valdez, N. Grossman, N. K. Mondal, H. E. Montgomery, G. Álvarez, Mingming Yang, H. T. Diehl, S. M. Chang, J. P. Cussonneau, S. H. Aronson, J. T. White, J. Kotcher, A. Klatchko, Sarah Catherine Eno, Jing Li, J. S. Hoftun, J. N. Butler, A. A. Mayorov, Quing Zhu, P. D. Grannis, H. Piekarz, A. Boehnlein, O. I. Dahl, P. M. Sood, S. Fredriksen, Y. K. Que, M. K. Fatyga, N. Graf, C. Zeitnitz, Vyacheslav Klyukhin, J. Ellison, Ying Li, Y. S. Zhu, Y. H. Zhou, R. J. Genik, T. Behnke, K. S. Hahn, S. A. Jerger, D. Cutts, D. P. Stoker, B. Gibbard, C. Klopfenstein, G. E. Forden, A. P. Heinson, D. Xiao, C. K. Jung, S. Fahey, A. Kernan, Greg Landsberg, S. Margulies, O. Callot, J. Sculli, A. Efimov, J. M. Guida, S. Lami, R. E. Hall, Matthew Jones, A. Leflat, A. Jonckheere, Stephan Linn, T. L. Geld, N. Amos, M. Paterno, Dhiman Chakraborty, N. Oshima, Daria Zieminska, A. Pluquet, P.F. Ermolov, Yanxi Zhang, R. D. Schamberger, A. Smith, J. F. Lebrat, W. G. Cobau, M. I. Martin, J. S. Kang, S. Igarashi, Q. Z. Li-Demarteau, E. Amidi, V. S. Burtovoi, Randy Ruchti, J. R. T. de Mello Neto, C. S. Mishra, C. Boswell, S. Rusin, L. Markosky, Vasken Hagopian, H. Weerts, Ph. Mangeot, A. Milder, S. Abachi, Juliet Lee-Franzini, C. Murphy, R. J. Madaras, J. M.R. Roldan, P. R.G. Virador, D. Buchholz, Suman Bala Beri, I. Manning, M. D. Marx, H. D. Wahl, P. Tamburello, D. Denisov, J. Teiger, Heng Xu, Srinivasan Rajagopalan, Thomas Ferbel, Dan Green, V. Oguri, W.A. Wenzel, R. P. Xie, Gregory R Snow, M. L. Stevenson, H. Johari, V. Balamurali, T. McKibben, M. V. S. Rao, Alexander Vorobiev, W. E. Cooper, L. P. Chen, Daniel R Claes, Raymond Brock, Boaz Klima, D. Norman, S. Willis, M. Pang, S. P. Denisov, P. Grudberg, M. R. Krishnaswamy, A. R. Clark, S. Grünendahl, A. Para, Sergey Chekulaev, I. Adam, P. Rubinov, K. W. Merritt, J. F. Bartlett, D. Neić, Yanwen Liu, L. Lueking, Peter Loch, M. L. Kelly, Howard Gordon, K. C. Frame, and L. T. Kerth
Subjects: Physics, Top quark, Particle physics, Muon, Luminosity (scattering theory), Astrophysics::High Energy Astrophysical Phenomena, General Physics and Astronomy, Electron, Bottom quark, Particle identification, Standard Model, Nuclear physics, High Energy Physics::Experiment, Production (computer science)
Abstract: We present new results on the search for the top quark in p anti-p collisions at S**(1/2) = 1.8 TeV with an integrated luminosity of 13.5 +- 1.6 pb**(-1). We have considered t anti-t production in the Standard Model using electron and muon dilepton decay channels (t anti-t -> e mu + jets, e e + jets, and mu mu + jets) and single-lepton decay channels (t anti-t -> e + jets and mu + jets) with and without tagging of b quark jets. From all channels, we have 9 events with an expected background of 3.8 +- 0.9. If we assume that the excess is due to t anti-t production, and assuming a top mass of 180 GeV/c**2, we obtain a cross section of 8.2 +- 5.1 pb.
Published: 1995

43. The BES detector

Author: R. G. Liu, Z. Z. Du, Wei Li, Z.Q. Chen, Xi Wang, S. M. Wang, Junguang Lu, S. W. Han, R. S. Xu, H. S. Zhou, Y. K. Que, Li Zhou, B.Z. Dong, J. Shen, G. Rong, H. L. Ding, C. H. Jiang, R. B. Li, Yao Zhang, C. Q. Feng, Jia Li, X. M. Xia, X. Liu, Jin Li, C.S. Yu, Z.Q. Zhao, Z.D. Nie, Min Zhou, Lei Li, Hongming Zhang, G.Y. Wang, H. C. Cui, C. L. Wei, H. Z. Shi, D. X. Zhao, B. Y. Zhang, Y. Y. Wang, Y.H. Qu, Z.Y. Liu, J.G. Wang, Z. P. Zheng, B. A. Zhuang, W.H. Tian, G.S. Zhu, D. H. Ma, Jing Zhou, Lin Zhou, X.J. Hou, Zhen-An Liu, L. J. Pan, Q. P. Jia, Ming-Han Ye, Xuan Yang, S. D. Gu, G. P. Zhou, X. C. Meng, H. S. Mao, H. L. Ni, J. Xiao, Y. Q. Chen, X. F. Song, G.P. Zhong, Guo-Ming Chen, S. Z. Lin, W. R. Zhao, Y. N. Gao, Y.Z. Guan, T. J. Wang, Ya-Nan Guo, W.D. Lu, L. S. Zheng, S. Q. Tang, C.Y. Zhang, Q. M. Li, M. L. Gao, P. L. Wang, J.S. Hu, Hui Li, C.G. Lu, B. W. Shen, Yue-Hua Zhou, X.R. Yang, J. Z. Bai, D. M. Xi, Pihong Zhao, M. Zheng, P. P. Zhao, Y. S. Zhu, W. X. Gu, J. Yan, W. Liu, Y. H. Zhou, Z.Y. Lu, Y. F. Lai, Shao-Min Chen, F.C. Lin, W.P. Niu, E. C. Ma, Dehong Zhang, X. Z. Cui, W. G. Yan, C. M. Yang, S.P. Yan, W. X. Gao, S.Q. Li, Y. Z. Huang, H. L. Zhang, S.G. Zhu, Z.Z. Wei, Chunmei Zhang, Q. Ju, M. Wang, H. Y. Sheng, L. S. Wang, Y. Y. Zhang, Z. Q. Yu, Shun-Qi Zhang, M. He, D. L. Shen, J.W. Wu, X. Du, W.S. Zheng, N. D. Qi, Chen-Hua Yu, Lei Zhang, K. R. He, J. Zhao, Willis Lin, D. Q. Huang, T.Z. Ruan, M. G. Zhao, J.J. Qian, Ping Wang, C.Z. Yang, S. T. Xue, P. F. Lang, G. Y. Hu, S. Q. Gao, J. W. Zhang, J.P. Sheng, Y.W. Deng, Zirui Wang, Siguang Wang, F.K. Tang, Qian Liu, Zhe Wang, S.Q. Wu, B.C. Xuan, J. M. Ma, Q. Bian, Y. L. Han, L.J. Chen, Yue-Yuan Zhang, X.S. Dong, Xiao-Xi Xie, Jianping Zheng, Lu Wang, W. Hao, C. Y. Yang, Z.D. Wu, F. Y. Li, Geoffrey Zhang, S.H. Wu, Z. Feng, Y. N. Guo, J.Y. Wang, P. P. Xie, G.N. Liang, J.W. Hu, P. Q. Li, J. He, W. G. Li, J.G. Xu, W.M. Wu, F. Wang, Y. C. Zhu, Z. P. Mao, J. Nie, Z.X. Li, Chang-Chun Zhang, Y. Y. Shao, C. S. Gao, Z.S. Fu, Y.K. Chi, H.F. Guo, Q. M. Zhu, S.S. Deng, H. S. Sun, Z. Q. Xu, Z. G. Zhao, Xin Wu, and D. Li
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Spectrometer, Physics::Instrumentation and Detectors, Electron–positron annihilation, Detector, Particle identification, Charged particle, law.invention, Nuclear physics, Positron, law, Physics::Accelerator Physics, High Energy Physics::Experiment, Center of mass, Collider, Instrumentation
Abstract: The Beijing Spectrometer (BES) is a general purpose solenoidal detector at the Beijing Electron Positron Collider (BEPC). It is designed to study exclusive final states in e + e − annihilations at the center of mass energy from 3.0 to 5.6 GeV. This requires large solid angle coverage combined with good charged particle momentum resolution, good particle identification and high photon detection efficiency at low energies. In this paper we describe the construction and the performance of BES detector.
Published: 1994

44. A structure theorem for a pair of quadratic forms

Author: Y. Y. Shao, J. S. Hsia, and M. Jöchner
Subjects: Combinatorics, Discrete mathematics, Conjecture, Spinor genus, Applied Mathematics, General Mathematics, Binary quadratic form, Quadratic field, Algebraic number field, ε-quadratic form, Isotropic quadratic form, Ring of integers, Mathematics
Abstract: For any two lattices L and K in the same genus there exist isometric primitive sublattices L' , K' of codimension 1. This result not only proves Friedland's conjecture but also extends it to lattices in an arbitrary genus and defined over any algebraic number field. In [F] Friedland proved that for any two positive definite integral symmetric matrices A and B of rank n and determinant unity there are matrices A1 = (aij) and B1 = (b1j) which are Z-equivalent (as quadratic forms) to A and B respectively and such that aij = bij for 1 < i, j < n 2. He further conjectured that the same holds with 1 < i, j < n 1. His proof is matricial. We shall give here not only a lattice-theoretic proof of his theorem, but also a more general result not restricted to unimodular lattices rather for any genus and defined over any number field. Furthermore, we shall also prove the conjectured codimension-one result in this full general setting. In the course of the proof we shall first present a weaker version (Proposition) which is based on the theorem of "spinor linkage" [BH]. This version is weaker because the constructed pair of isometric sublattices in general has codimension two and will only have codimension one when the given lattices corresponding to the matrices A and B belong to the same spinor genus. However, this version has the virtue that the isometric sublattices are more effectively determinable since the effectiveness of finding the prime spot in the construction of the associated graph had been demonstrated in [BH]. The more general statement in the structure theorem below uses the stronger property of "class linkage" which is of independent interest. In what follows, let F be an algebraic number field, R its ring of integers, and V a regular quadratic space over F of dimension n. Let L and K be two R-lattices on V belonging to the same genus. L and K are said to be q-neighbors (for some discrete spot q on F) if Lp = Kp for p :# q and [Lq: Lq n Kq] = [Kq: Lq n Kq] = Norm(q). The "spinor genera linkage theorem" of [BH] states that we can always effectively find a discrete spot q away from 2 vol(L) and a lattice K' belonging to spn+K so that L and K' are Received by the editors September 3, 1991 and, in revised form, March 23, 1992. 1991 Mathematics Subject Classification. Primary 1 lE12; Secondary 15A63, 1 1D09, 11 E20. Research partially supported by N.S.F. ? 1993 American Mathematical Society 0002-9939/93 $1.00 + $.25 per page
Published: 1993

45. Measurements of the Cross Section fore+e−→Hadronsat Center-of-Mass Energies from 2 to 5 GeV

Author: J. T. He, Y. Jin, G. S. Huang, Z. P. Zhang, Fei-Fei Liu, J. Z. Bai, L. Zhang, Jiang Changhui, R. Malchow, Qiyang Zhang, P. Q. Li, Yirong Zhu, X. L. Luo, J. W. Zhao, Jing Wang, Y. B. Zhao, P. Wang, G. W. Yu, H. B. Li, B. J. Liu, S. Q. Tang, B.S. Zou, J. Z. Wang, L. P. Fu, Stephen L. Olsen, D. M. Xi, Z. A. Zhu, Z. J. Guo, H. W. Zhao, N. Wu, J. P. Liu, J. W. Zhang, C. C. Zhang, H. Z. Shi, Jiawei Zhao, J. Y. Suh, S. T. Xue, G. A. Yang, X. F. Song, L. S. Wang, M. G. Zhao, Z. J. Ke, W. G. Li, G. Y. Hu, K. L. He, Jian Kang, Feng Shi, G. F. Xu, Hyunyong Kim, D. H. Zhang, X. B. Ji, S. W. Han, Zhengguo Zhao, Y. N. Guo, A. D. Chen, C. S. Yu, G. R. Lu, Guangzhao Zhou, Y. L. Han, C. Y. Yang, Xue-Qian Li, Y. Xu, W. Dunwoodie, F. Lu, Y. X. Ye, Z. P. Mao, Xingzhu Cui, X. C. Meng, Bing Zhou, Yi Chen, Y. K. Que, J. B. Choi, X. X. Xie, X. Y. Shen, W. R. Zhao, T. Hong, J. C. Li, M. He, Li Zhou, H. M. Hu, D. L. Shen, H. S. Chen, He-Run Yang, E. C. Ma, H. L. Zhang, X. R. Qi, T. Hu, S. D. Gu, C. M. Yang, P. L. Wang, X. H. He, Y. Yuan, Y. S. Zhu, S. Q. Zhang, J. G. Bian, B. D. Jones, P. Zhang, G. S. Varner, Tao Liu, Y. B. Liu, X. M. Xia, Jun-Bing Ma, Hongming Zhang, Y. F. Lai, J. He, H. Y. Fu, W. H. Toki, B. W. Shen, Q. H. Hu, J. Li, D. X. Zhao, B. Y. Zhang, Hangxu Li, Xuan Yang, Y. Z. Sun, Y. Y. Wang, Liangfeng Sun, P. P. Zhao, W. B. Yan, Hao-Ze Chen, X. D. Chen, Tai Young Kim, S. W. Ye, F. A. Harris, Q. M. Zhu, W. G. Yan, Z. D. Nie, H. S. Sun, Lei Zhang, X. N. Li, Joseph Izen, G. Rong, Zhen Wang, Y. Z. Huang, W. Yang, J. Nie, Y. S. Dai, Y. Y. Shao, C. S. Gao, Jinxing Zheng, D. Paluselli, C. D. Qian, D. Kong, Z. P. Zheng, S. M. Wang, Y. P. Chu, Z. J. Lu, Junguang Lu, Xiru Huang, Feng Liu, G. L. Tong, B. A. Zhuang, S. P. Chi, K. J. Zhu, H. Park, Yong Ban, J. F. Qiu, D. Li, X. Y. Zhang, R. G. Liu, H. Shen, Seong Keun Kim, R. Y. Li, Cunfeng Wei, Jia Liu, J. C. Chen, Xuanhong Lou, L. S. Zheng, Q. J. Li, Haiwen Liu, J. Y. Zhang, X. H. Mo, M. H. Ye, Y. K. Heng, Y. Y. Zhang, H. Y. Sheng, C. X. Yu, N. D. Qi, H. S. Mao, Z. Z. Du, L. Y. Dong, Wei Li, B. S. Cheng, and Z. X. Liu
Subjects: Physics, Particle physics, Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Physics::Accelerator Physics, General Physics and Astronomy, High Energy Physics::Experiment, Center of mass, Atomic physics, Nuclear Experiment
Abstract: We report values of $R\phantom{\rule{0ex}{0ex}}=\phantom{\rule{0ex}{0ex}}\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}\mathrm{hadrons})/\ensuremath{\sigma}({e}^{+}{e}^{\ensuremath{-}}\ensuremath{\rightarrow}{\ensuremath{\mu}}^{+}{\ensuremath{\mu}}^{\ensuremath{-}})$ for 85 center-of-mass energies between 2 and $5\mathrm{GeV}$ measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider.
Published: 2002

46. First measurement of the branching fraction of the decayψ(2S)→τ+τ−

Author: J. Z. Bai, Y. Ban, J. G. Bian, I. Blum, A. D. Chen, H. F. Chen, H. S. Chen, J. Chen, J. C. Chen, X. D. Chen, Y. Chen, Y. B. Chen, B. S. Cheng, S. P. Chi, Y. P. Chu, J. B. Choi, X. Z. Cui, Y. S. Dai, L. Y. Dong, Z. Z. Du, W. Dunwoodie, H. Y. Fu, L. P. Fu, C. S. Gao, P. Gratton, S. D. Gu, Y. F. Gu, Y. N. Guo, Z. J. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, J. T. He, K. L. He, M. He, X. He, T. Hong, Y. K. Heng, D. G. Hitlin, G. Y. Hu, H. M. Hu, Q. H. Hu, T. Hu, G. S. Huang, X. P. Huang, Y. Z. Huang, J. M. Izen, X. B. Ji, C. H. Jiang, Y. Jin, B. D. Jones, J. S. Kang, Z. J. Ke, M. H. Kelsey, B. K. Kim, H. J. Kim, S. K. Kim, T. Y. Kim, D. Kong, Y. F. Lai, A. Lankford, D. Li, H. B. Li, H. H. Li, J. Li, J. C. Li, P. Q. Li, Q. J. Li, R. Y. Li, W. Li, W. G. Li, X. N. Li, X. Q. Li, B. Liu, F. Liu, Feng. Liu, H. M. Liu, J. Liu, J. P. Liu, T. R. Liu, R. G. Liu, Y. Liu, Z. X. Liu, X. C. Lou, B. Lowery, G. R. Lu, F. Lu, J. G. Lu, Z. J. Lu, X. L. Luo, E. C. Ma, J. M. Ma, R. Malchow, H. S. Mao, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie, Z. D. Nie, S. L. Olsen, J. Oyang, D. Paluselli, L. J. Pan, J. Panetta, H. Park, F. Porter, N. D. Qi, X. R. Qi, C. D. Qian, J. F. Qiu, Y. K. Que, G. Rong, M. Schernau, Y. Y. Shao, B. W. Shen, D. L. Shen, H. Shen, X. Y. Shen, H. Y. Sheng, F. Shi, H. Z. Shi, X. F. Song, J. Standifird, J. Y. Suh, H. S. Sun, L. F. Sun, Y. Z. Sun, S. Q. Tang, W. Toki, G. L. Tong, G. S. Varner, J. Wang, J. Z. Wang, L. Wang, L. S. Wang, Meng Wang, P. Wang, P. L. Wang, S. M. Wang, Y. Y. Wang, Z. Y. Wang, M. Weaver, C. L. Wei, J. M. Wu, N. Wu, D. M. Xi, X. M. Xia, X. X. Xie, G. F. Xu, Y. Xu, S. T. Xue, W. B. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, G. A. Yang, H. X. Yang, X. F. Yang, M. H. Ye, S. W. Ye, Y. X. Ye, C. S. Yu, C. X. Yu, G. W. Yu, Y. Yuan, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, H. L. Zhang, H. Y. Zhang, J. Zhang, J. W. Zhang, L. Zhang, L. S. Zhang, P. Zhang, Q. J. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Y. Zhang, Z. P. Zhang, D. X. Zhao, H. W. Zhao, Jiawei Zhao, J. W. Zhao, M. Zhao, P. P. Zhao, W. R. Zhao, Y. B. Zhao, Z. G. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, B. Q. Zhou, G. M. Zhou, L. Zhou, K. J. Zhu, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, B. A. Zhuang, and B. S. Zou
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Branching fraction, Electron–positron annihilation, Value (computer science), Resonance, Particle accelerator, law.invention, Nuclear physics, Particle decay, law, High Energy Physics::Experiment, Collider, Lepton
Abstract: The branching fraction of the psi(2S) decay into tau(+) tau(-) has been measured for the first time using the BES detector at the Beijing Electron-Positron Collider. The result is B-tautau =(2.71+/-0.43+/-0.55) x 10(-3), where the first error is statistical and the second is systematic. This value, along with those for the branching fractions into e(+)c(-) and mu(+)mu(-) of this resonance, satisfy well the relation predicted by the sequential lepton hypothesis. Combining all these values with the leptonic width of the resonance, the total width of the psi(2S) is determined to be (252+/-37) keV.
Published: 2002

47. Defect states and charge trapping characteristics of HfO2 films for high performance nonvolatile memory applications

Author: Xingsen Gao, Xubing Lu, Y. Y. Shao, Jiyan Dai, Yuegang Zhang, Zhenhui Zhang, Min Zeng, Xiangao Zhang, and Jinqiu Liu
Subjects: Photoluminescence, Materials science, Physics and Astronomy (miscellaneous), Silicon, business.industry, chemistry.chemical_element, Trapping, Crystallographic defect, Non-volatile memory, chemistry, Optoelectronics, Photoluminescence excitation, Electric potential, business, Voltage
Abstract: In this work, we present significant charge trapping memory effects of the metal-hafnium oxide-SiO2-Si (MHOS) structure. The devices based on 800 °C annealed HfO2 film exhibit a large memory window of ∼5.1 V under ±10 V sweeping voltages and excellent charge retention properties with only small charge loss of ∼2.6% after more than 104 s retention. The outstanding memory characteristics are attributed to the high density of deep defect states in HfO2 films. We investigated the defect states in the HfO2 films by photoluminescence and photoluminescence excitation measurements and found that the defect states distributed in deep energy levels ranging from 1.1 eV to 2.9 eV below the conduction band. Our work provides further insights for the charge trapping mechanisms of the HfO2 based MHOS devices.
Published: 2014

48. Radiative Decay of the \psi(2S) into Two Pseudoscalar Mesons

Author: J. Z. Bai, Y. Ban, J. G. Bian, I. Blum, A. D. Chen, G. P. Chen, H. F. Chen, H. S. Chen, J. Chen, J. C. Chen, X. D. Chen, Y. Chen, Y. B. Chen, B. S. Cheng, J. B. Choi, X. Z. Cui, H. L. Ding, L. Y. Dong, Z. Z. Du, W. Dunwoodie, C. S. Gao, M. L. Gao, S. Q. Gao, P. Gratton, J. H. Gu, S. D. Gu, W. X. Gu, Y. N. Guo, Z. J. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, J. T. He, K. L. He, M. He, Y. K. Heng, D. G. Hitlin, G. Y. Hu, H. M. Hu, J. L. Hu, Q. H. Hu, T. Hu, G. S. Huang, X. P. Huang, Y. Z. Huang, J. M. Izen, C. H. Jiang, Y. Jin, B. D. Jones, X. Ju, J. S. Kang, Z. J. Ke, M. H. Kelsey, B. K. Kim, H. J. Kim, S. K. Kim, T. Y. Kim, D. Kong, Y. F. Lai, P. F. Lang, A. Lankford, C. G. Li, D. Li, H. B. Li, J. Li, J. C. Li, P. Q. Li, W. Li, W. G. Li, X. H. Li, X. N. Li, X. Q. Li, Z. C. Li, B. Liu, F. Liu, Feng. Liu, H. M. Liu, J. Liu, J. P. Liu, R. G. Liu, Y. Liu, Z. X. Liu, X. C. Lou, B. Lowery, G. R. Lu, F. Lu, J. G. Lu, X. L. Luo, E. C. Ma, J. M. Ma, R. Malchow, H. S. Mao, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie, S. L. Olsen, J. Oyang, D. Paluselli, L. J. Pan, J. Panetta, H. B. Park, F. Porter, N. D. Qi, X. R. Qi, C. D. Qian, J. F. Qiu, Y. H. Qu, Y. K. Que, G. Rong, M. Schernau, Y. Y. Shao, B. W. Shen, D. L. Shen, H. Shen, H. Y. Shen, X. Y. Shen, F. Shi, H. Z. Shi, X. F. Song, J. Standifird, J. Y. Suh, H. S. Sun, L. F. Sun, Y. Z. Sun, S. Q. Tang, W. Toki, G. L. Tong, G. S. Varner, F. Wang, L. Wang, L. S. Wang, L. Z. Wang, P. Wang, P. L. Wang, S. M. Wang, Y. Y. Wang, Z. Y. Wang, M. Weaver, C. L. Wei, N. Wu, Y. G. Wu, D. M. Xi, X. M. Xia, Y. Xie, Y. H. Xie, G. F. Xu, S. T. Xue, J. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, H. X. Yang, W. Yang, X. F. Yang, M. H. Ye, S. W. Ye, Y. X. Ye, C. S. Yu, C. X. Yu, G. W. Yu, Y. H. Yu, Z. Q. Yu, C. Z. Yuan, Y. Yuan, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, Dehong Zhang, H. L. Zhang, J. Zhang, J. W. Zhang, L. Zhang, Lei. Zhang, L. S. Zhang, P. Zhang, Q. J. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Y. Zhang, D. X. Zhao, H. W. Zhao, Jiawei Zhao, J. W. Zhao, M. Zhao, W. R. Zhao, Z. G. Zhao, J. P. Zheng, L. S. Zheng, Z. P. Zheng, B. Q. Zhou, L. Zhou, K. J. Zhu, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, and B. A. Zhuang
Subjects: Physics, Nuclear physics, Pseudoscalar, Nuclear and High Energy Physics, Meson, Branching fraction, Electron–positron annihilation, Excited state, Radiative transfer, Radiative decay, Gluon, High Energy Physics - Experiment
Abstract: Radiative decays of the radially excited charmonium resonance, \psi(2S), into \pi\pi, K Kbar and \eta\eta final states have been measured in a sample of 3.96 * 10^6 \psi(2S) events collected by the BES collaboration. The branching ratios B(\psi(2S) -> \gamma f_{2}(1270)) = (2.27 +- 0.26 +- 0.39) * 10^{-4} and B(\psi(2S) -> \gamma f_0(1710)) * B(f_0(1710) -> K^+ K^-) = (5.59 +- 1.12 +- 0.93) * 10^{-5} are obtained. When compared to the corresponding radiative J/\psi decays, the observed \psi(2S) radiative decay rates into \gamma f_2(1270) and \gamma f_0(1710) are consistent with the 15% rule., Comment: 7 pages, 5 figures
Published: 2001

49. Measurements of the cross section for e(+)e(-) --hadrons at center-of-mass energies from 2 to 5 GeV

Author: J Z, Bai, Y, Ban, J G, Bian, A D, Chen, H F, Chen, H S, Chen, J C, Chen, X D, Chen, Y B, Chen, B S, Cheng, S P, Chi, Y P, Chu, J B, Choi, X Z, Cui, Y S, Dai, L Y, Dong, Z Z, Du, W, Dunwoodie, H Y, Fu, L P, Fu, C S, Gao, S D, Gu, Y N, Guo, Z J, Guo, S W, Han, Y, Han, F A, Harris, J, He, J T, He, K L, He, M, He, X, He, T, Hong, Y K, Heng, G Y, Hu, H M, Hu, Q H, Hu, T, Hu, G S, Huang, X P, Huang, Y Z, Huang, J M, Izen, X B, Ji, C H, Jiang, Y, Jin, B D, Jones, J S, Kang, Z J, Ke, H J, Kim, S K, Kim, T Y, Kim, D, Kong, Y F, Lai, D, Li, H B, Li, H H, Li, J, Li, J C, Li, P Q, Li, Q J, Li, R Y, Li, W, Li, W G, Li, X N, Li, X Q, Li, B, Liu, F, Liu, Feng, Liu, H M, Liu, J, Liu, J P, Liu, T R, Liu, R G, Liu, Y, Liu, Z X, Liu, X C, Lou, G R, Lu, F, Lu, J G, Lu, Z J, Lu, X L, Luo, E C, Ma, J M, Ma, R, Malchow, H S, Mao, Z P, Mao, X C, Meng, X H, Mo, J, Nie, Z D, Nie, S L, Olsen, D, Paluselli, H, Park, N D, Qi, X R, Qi, C D, Qian, J F, Qiu, Y K, Que, G, Rong, Y Y, Shao, B W, Shen, D L, Shen, H, Shen, X Y, Shen, H Y, Sheng, F, Shi, H Z, Shi, X F, Song, J Y, Suh, H S, Sun, L F, Sun, Y Z, Sun, S Q, Tang, W, Toki, G L, Tong, G S, Varner, J, Wang, J Z, Wang, L, Wang, L S, Wang, P, Wang, P L, Wang, S M, Wang, Y Y, Wang, Z Y, Wang, C L, Wei, N, Wu, D M, Xi, X M, Xia, X X, Xie, G F, Xu, Y, Xu, S T, Xue, W B, Yan, W G, Yan, C M, Yang, C Y, Yang, G A, Yang, H X, Yang, W, Yang, X F, Yang, M H, Ye, S W, Ye, Y X, Ye, C S, Yu, C X, Yu, G W, Yu, Y, Yuan, B Y, Zhang, C, Zhang, C C, Zhang, D H, Zhang, H L, Zhang, H Y, Zhang, J, Zhang, J W, Zhang, L, Zhang, L S, Zhang, P, Zhang, Q J, Zhang, S Q, Zhang, X Y, Zhang, Y Y, Zhang, Z P, Zhang, D X, Zhao, H W, Zhao, Jiawei, Zhao, J W, Zhao, M, Zhao, P P, Zhao, W R, Zhao, Y B, Zhao, Z G, Zhao, J P, Zheng, L S, Zheng, Z P, Zheng, B Q, Zhou, G M, Zhou, L, Zhou, K J, Zhu, Q M, Zhu, Y C, Zhu, Y S, Zhu, Z A, Zhu, B A, Zhuang, and B S, Zou
Abstract: We report values of R = sigma(e(+)e(-)--hadrons)/sigma(e(+)e(-)--mu(+)mu(-)) for 85 center-of-mass energies between 2 and 5 GeV measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider.
Published: 2001

50. Measurement of the mass and full width of theηcmeson

Author: J. Z. Bai, Y. Ban, J. G. Bian, I. Blum, A. D. Chen, G. P. Chen, H. F. Chen, H. S. Chen, J. Chen, J. C. Chen, X. D. Chen, Y. Chen, Y. B. Chen, B. S. Cheng, J. B. Choi, X. Z. Cui, H. L. Ding, L. Y. Dong, Z. Z. Du, W. Dunwoodie, C. S. Gao, M. L. Gao, S. Q. Gao, P. Gratton, J. H. Gu, S. D. Gu, W. X. Gu, Y. N. Guo, Z. J. Guo, S. W. Han, Y. Han, F. A. Harris, J. He, J. T. He, K. L. He, M. He, Y. K. Heng, D. G. Hitlin, G. Y. Hu, H. M. Hu, J. L. Hu, Q. H. Hu, T. Hu, G. S. Huang, X. P. Huang, Y. Z. Huang, J. M. Izen, C. H. Jiang, Y. Jin, B. D. Jones, X. Ju, J. S. Kang, Z. J. Ke, M. H. Kelsey, B. K. Kim, H. J. Kim, S. K. Kim, T. Y. Kim, D. Kong, Y. F. Lai, P. F. Lang, A. Lankford, C. G. Li, D. Li, H. B. Li, J. Li, J. C. Li, P. Q. Li, W. Li, W. G. Li, X. H. Li, X. N. Li, X. Q. Li, Z. C. Li, B. Liu, F. Liu, Feng. Liu, H. M. Liu, J. Liu, J. P. Liu, R. G. Liu, Y. Liu, Z. X. Liu, X. C. Lou, B. Lowery, G. R. Lu, F. Lu, J. G. Lu, X. L. Luo, E. C. Ma, J. M. Ma, R. Malchow, H. S. Mao, Z. P. Mao, X. C. Meng, X. H. Mo, J. Nie, S. L. Olsen, J. Oyang, D. Paluselli, L. J. Pan, J. Panetta, H. Park, F. Porter, N. D. Qi, X. R. Qi, C. D. Qian, J. F. Qiu, Y. H. Qu, Y. K. Que, G. Rong, M. Schernau, Y. Y. Shao, B. W. Shen, D. L. Shen, H. Shen, H. Y. Shen, X. Y. Shen, F. Shi, H. Z. Shi, X. F. Song, J. Standifird, J. Y. Suh, H. S. Sun, L. F. Sun, Y. Z. Sun, S. Q. Tang, W. Toki, G. L. Tong, G. S. Varner, F. Wang, L. Wang, L. S. Wang, L. Z. Wang, P. Wang, P. L. Wang, S. M. Wang, Y. Y. Wang, Z. Y. Wang, M. Weaver, C. L. Wei, N. Wu, Y. G. Wu, D. M. Xi, X. M. Xia, Y. Xie, Y. H. Xie, G. F. Xu, S. T. Xue, J. Yan, W. G. Yan, C. M. Yang, C. Y. Yang, H. X. Yang, W. Yang, X. F. Yang, M. H. Ye, S. W. Ye, Y. X. Ye, C. S. Yu, C. X. Yu, G. W. Yu, Y. H. Yu, Z. Q. Yu, C. Z. Yuan, Y. Yuan, B. Y. Zhang, C. Zhang, C. C. Zhang, D. H. Zhang, Dehong Zhang, H. L. Zhang, J. Zhang, J. W. Zhang, L. Zhang, Lei. Zhang, L. S. Zhang, P. Zhang, Q. J. Zhang, S. Q. Zhang, X. Y. Zhang, Y. Y. Zhang, D. X. Zhao, H. W. Zhao, Jiawei Zhao, J. W. Zhao, M. Zhao, W. R. Zhao, Z. G. Zhao, J. P. Zheng, L. S. Zheng, Y. H. Zheng, Z. P. Zheng, B. Q. Zhou, L. Zhou, K. J. Zhu, Q. M. Zhu, Y. C. Zhu, Y. S. Zhu, Z. A. Zhu, and B. A. Zhuang
Subjects: Physics, Nuclear and High Energy Physics, Particle decay, Crystallography, Pion, Meson, Electron–positron annihilation, Hadron, Mass spectrum, Elementary particle, Quarkonium
Abstract: In a sample of 7.8 million J/{psi} decays collected in the Beijing Spectrometer, the process J/{psi}{yields}{gamma}{eta}{sub c} is observed for five different {eta}{sub c} decay channels: K{sup +}K{sup -}{pi}{sup +}{pi}{sup -}, {pi}{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -}, K{sup {+-}}K{sub S}{sup 0}{pi}{sup {+-}} (with K{sub S}{sup 0}{yields}{pi}{sup +}{pi}{sup -}), {phi}{phi} (with {phi}{yields}K{sup +}K{sup -}) and K{sup +}K{sup -}{pi}{sup 0}. From these signals, we determine the mass of {eta}{sub c} to be 2976.6{+-}2.9{+-}1.3 MeV. Combining this result with a previously reported result from a similar study using {psi}(2S){yields}{gamma}{eta}{sub c} detected in the same spectrometer gives m{sub {eta}{sub c}}=2976.3{+-}2.3{+-}1.2 MeV. For the combined samples, we obtain {gamma}{sub {eta}{sub c}}=11.0{+-}8.1{+-}4.1 MeV. (c) 2000 The American Physical Society.
Published: 2000

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