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1. Seasonal succession of endophyte and the association with active ingredients in Rheum palmatum

Author

Ni Li, YiFan Mao, YaLi Huang, LingXuan Zhang, Lu Hou, XiaoJun Liu, YaRong Du, DaWei Chen, and Kun Sun

Subjects
endophyte, seasonal succession, Rheum palmatum, correlation analysis, microbial network, Microbiology, QR1-502
Abstract

ABSTRACT The endophyte is closely related to medicinal plant growth and development, stress resistance, and active ingredients’ accumulation. However, a seasonal succession of endophytes and the association with active ingredients is still unclear. In this study, we used high-throughput sequencing methods to compare the endophyte diversity of Rheum palmatum under different seasons and analyze the association between endophytes and five active ingredients. The results show that the diversity of endophytic fungi increased and then decreased, while bacterial diversity increased with the change of season. Community composition showed that the dominant genera of endophytic fungi were different under the different seasons, while the dominant genera of endophytic bacteria were Delftia. Analysis of co-occurrence network maps showed that the connectivity and complexity of endophytic fungi and bacterial networks decreased with the change of season. Spearman analysis indicated that the active ingredients of R. palmatum were significantly positive correlation with genera of endophytic fungi (Chalara). FUNGuild and PICRUSt predictive analysis indicated that the function of endophytic fungi and bacteria, respectively, were symbiotroph and metabolism, and relative abundances were different under the different seasons. Our results help elucidate the mechanism of medicinal plant–endophyte interaction.IMPORTANCEThrough the investigation of the seasonal succession of endophytes and the association with active ingredients in Rheum palmatum, we found that the diversity and composition of endophytes in R. palmatum exhibited seasonal dynamics, and the active ingredients of R. palmatum showed a significantly positive correlation with the genus of endophytic fungi (Chalara). Our results may lay a foundation for understanding the interaction mechanism of endophyte and medicinal plant, and can also provide a theoretical basis for sustainable production of medicinal plants.

Published
2024
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2. The fate of antibiotics and antibiotic resistance genes in Large-Scale chicken farm Environments: Preliminary view of the performance of National veterinary Antimicrobial use reduction Action in Guangdong, China

Author

Yu Pan, Jiaxiong Zeng, Lingxuan Zhang, Jianxin Hu, Haihong Hao, Zhenling Zeng, and Yafei Li

Subjects
Antibiotic resistance gene, Antibiotic residual, Chicken farm, Veterinary antibiotic reduction, Environment risk, Environmental sciences, GE1-350
Abstract

In 2018, China implemented the Veterinary Antimicrobial Use Reduction Action to curb the rapid development of antibiotic resistance (AR). However, the AR-related pollutions in animal farms after the reduction policy has been poorly investigated. Here, we performed a comprehensive investigation combining UPLC-MS/MS, metagenomic, and bacterial genomic analyses in eight representative large-scale chicken farms in Guangdong, China. Our results showed that antibiotics and ARGs contaminations were more severe in broiler farms than in layer farms. Notably, diverse tet(X) variants were prevalent in the chicken farms. These tet(X)s was carried by diverse E. coli lineages and obviously correlated with ISCR2 and IS1B transposases. The resistomes in chicken farms was significantly correlated with microbial community, and multiple factor analyses indicated that the joint effect of antibiotics-microbial community-MGEs was the most dominant driver of ARGs. Host tracking identified a variety of ARG bacterial hosts and the co-occurrence of ARGs-MRGs-MGEs. Source tracking indicated that the inherent component represented the main feature of resistomes in different hosts, while ARG transfer between the chicken gut and farm environments were frequent. A multiperspective evaluation of AR risk revealed that the early effect of antibiotic reduction was exhibited by the mitigation of maximum level of risky ARGs, prevalence of environmental AR pathogens, and HGT potential of ARGs mediated by phage structures. Overall, our findings provide insights into the antibiotic and ARG profiles in large-scale chicken farms with different rearing strategies and demonstrate a preliminary view of the performance of antibiotic reduction actions in China.

Published
2024
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3. Research Note: Synergistic effect of isopropoxy benzene guanidine and colistin against mcr-1-positive Escherichia coli in vitro and in duck intestine infection models

Author

Yafei Li, Huijun Niu, Lang Huang, Lingxuan Zhang, Lingxiang Mao, Peng Wan, Zhenbao Ma, Xianfeng Peng, Kai Wan, and Zhenling Zeng

Subjects
isopropoxy benzene guanidine, colistin, mcr-1, duck, resistance, Animal culture, SF1-1100
Abstract

ABSTRACT: Colistin (CST) is considered as “agent of last resort” against gram-negative bacteria as feed additive. Its clinical effectiveness has reduced since the emergence of mcr-1 gene in ducks. Isopropoxy benzene guanidine (IBG), a new guanidine derivative, showed positive effects on improving animal weights and alleviating intestinal pathogens, therefore, the objective of this study was to evaluate the effect of this compound supplement with CST in ducks and explore the possibilities in feed additive. A total of fifteen duck-origin Escherichia coli carrying the mcr-1 gene were included in this study. A checkerboard microdilution assay was used to evaluate the in vitro antibacterial activity of IBG combined with CST against mcr-1-positive E. coli. A 3-by-2 time–kill array of IBG (16, 32, and 64 μg/mL) and CST (1/2 MIC and 1/4 MIC) over 24 hours was utilized to characterize the activity of the agents alone and in combination against E. coli strain 1 in vitro. The intestinal colonization model was used to evaluate the in vivo effect of IBG combined with CST. These results indicated that the combination of IBG plus CST showed a synergistic effect against all clinical isolates (FICI < 0.5). The bacterial burden was reduced by more than 2 log10 CFU/mL when E. coli strain 1 was tested with 1/2 MIC CST plus 64 μg/mL IBG for 24 h. Further experiments in vivo demonstrated that the CST combined with IBG was able to increase duck weights, reduced intestinal pathogenic E. coli and showed a synergistic antibacterial effect. Combination of CST (4 mg/kg b.w.) plus IBG (32 or 64 mg/kg b.w.) achieved 1.84 to 3.29 log10 CFU/g killing after 7 d of therapy, which was significantly different from that in the challenge control group (p

Published
2024
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4. Single-nucleus transcriptomic mapping of blast-induced traumatic brain injury in mice hippocampus

Author

Lingxuan Zhang, Qiuyun Yang, Ruixuan Yuan, Manrui Li, Meili Lv, Lin Zhang, Xiaoqi Xie, Weibo Liang, and Xiameng Chen

Subjects
Science
Abstract

Abstract As a significant type of traumatic brain injury (TBI), blast-induced traumatic brain injury (bTBI) frequently results in severe neurological and psychological impairments. Due to its unique mechanistic and clinical features, bTBI presents diagnostic and therapeutic challenges compared to other TBI forms. The hippocampus, an important site for secondary injury of bTBI, serves as a key niche for neural regeneration and repair post-injury, and is closely associated with the neurological outcomes of bTBI patients. Nonetheless, the pathophysiological alterations of hippocampus underpinning bTBI remain enigmatic, and a corresponding transcriptomic dataset for research reference is yet to be established. In this investigation, the single-nucleus RNA sequencing (snRNA-seq) technique was employed to sequence individual hippocampal nuclei of mice from bTBI and sham group. Upon stringent quality control, gene expression data from 17,278 nuclei were obtained, with the dataset’s reliability substantiated through various analytical methods. This dataset holds considerable potential for exploring secondary hippocampal injury and neurogenesis mechanisms following bTBI, with important reference value for the identification of specific diagnostic and therapeutic targets for bTBI.

Published
2023
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5. Single-nucleus profiling of adult mice sub-ventricular zone after blast-related traumatic brain injury

Author

Manrui Li, Xiameng Chen, Qiuyun Yang, Shuqiang Cao, Steven Wyler, Ruixuan Yuan, Lingxuan Zhang, Miao Liao, Meili Lv, Feng Wang, Yadong Guo, Jihong Zhou, Lin Zhang, Xiaoqi Xie, and Weibo Liang

Subjects
Science
Abstract

Abstract Explosive blast-related traumatic brain injuries (bTBI) are common in war zones and urban terrorist attacks. These bTBIs often result in complex neuropathologic damage and neurologic complications. However, there is still a lack of specific strategies for diagnosing and/or treating bTBIs. The sub-ventricular zone (SVZ), which undergoes adult neurogenesis, is critical for the neurological maintenance and repair after brain injury. However, the cellular responses and mechanisms that trigger and modulate these activities in the pathophysiological processes following bTBI remain poorly understood. Here we employ single-nucleus RNA-sequencing (snRNA-seq) of the SVZ from mice subjected to a bTBI. This data-set, including 15272 cells (7778 bTBI and 7494 control) representing all SVZ cell types and is ideally suited for exploring the mechanisms underlying the pathogenesis of bTBIs. Additionally, it can serve as a reference for future studies regarding the diagnosis and treatment of bTBIs.

Published
2023
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6. Molecular epidemiology and transmission of rmtB-positive Escherichia coli among ducks and environment

Author

Guihua Li, Xiaoshen Li, Jianxin Hu, Yu Pan, Zhenbao Ma, Lingxuan Zhang, Wenguang Xiong, Dongping Zeng, and Zhenling Zeng

Subjects
duck, Escherichia coli, rmtB, multidrug resistance, whole genome sequencing, Animal culture, SF1-1100
Abstract

ABSTRACT: This study aimed to investigate the transmission and molecular epidemiological characteristics of the rmtB gene in Escherichia coli (E. coli) strains isolated from duck farms in Guangdong Province of China from 2018 to 2021. A total of 164 (19.4%, 164/844) rmtB-positive E. coli strains were recovered from feces, viscera, and environment. We performed antibiotic susceptibility tests, pulsed-field gel electrophoresis (PFGE), and conjugation experiments. We obtained the genetic context of 46 rmtB-carrying E. coli isolates and constructed a phylogenetic tree via whole genome sequencing (WGS) and bioinformatic analysis. The isolation rate of rmtB-carrying E. coli isolates in duck farms increased yearly from 2018 to 2020 but decreased in 2021. All rmtB-harboring E. coli strains were multidrug resistant (MDR), and 99.4% of the strains were resistant to more than 10 drugs. Surprisingly, duck- and environment-associated strains similarly showed high MDR. Conjugation experiments revealed that the rmtB gene horizontally cocarried blaCTX-M and blaTEM gene dissemination via IncFII plasmids. Insertion sequences IS26, ISCR1, and ISCR3 were closely associated with the spread of rmtB-harboring E. coli isolates. WGS analysis indicated that ST48 was the most prevalent sequence type. The results of single nucleotide polymorphism (SNP) differences revealed potential clonal transmission between ducks and the environment. Based on One Health principles, we need to strictly use veterinary antibiotics, monitor the distribution of MDR strains, and evaluate the impact of plasmid-mediated rmtB gene on human, animal, and environmental health.

Published
2023
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7. Fast Adiabatic Mode Evolution Assisted 2 × 2 Broadband 3 dB Coupler Using Silicon-on-Insulator Fishbone-like Grating Waveguides

Author

Yulong Xue, Lingxuan Zhang, Yangming Ren, Yufang Lei, and Xiaochen Sun

Subjects
fast adiabatic, broadband coupler, grating waveguides, power splitter, local eigenmodes, Chemistry, QD1-999
Abstract

We report a novel 2 × 2 broadband 3 dB coupler based on fast adiabatic mode evolution with a compact footprint and large bandwidth. The working principle of the coupler is based on the rapid adiabatic evolution of local eigenmodes of fishbone-like grating waveguides. Different from a traditional adiabatic coupling method realized by the slow change of the cross-section size of a strip waveguide, a fishbone waveguide allows faster adiabatic transition with proper structure and segment designs. The presented 3 dB coupler achieves a bandwidth range of 168 nm with an imbalance of no greater than ±0.1 dB only for a 9 μm coupling region which significantly improves existing adiabatic broadband couplers.

Published
2023
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9. Si Photonics FMCW LiDAR Chip with Solid-State Beam Steering by Interleaved Coaxial Optical Phased Array

Author

Yufang Lei, Lingxuan Zhang, Zhiyuan Yu, Yulong Xue, Yangming Ren, and Xiaochen Sun

Subjects
LiDAR, optical phased array, integrated optics, Mechanical engineering and machinery, TJ1-1570
Abstract

LiDAR has attracted increasing attention because of its strong anti-interference ability and high resolution. Traditional LiDAR systems rely on discrete components and face the challenges of high cost, large volume, and complex construction. Photonic integration technology can solve these problems and achieve high integration, compact dimension, and low-cost on-chip LiDAR solutions. A solid-state frequency-modulated continuous-wave LiDAR based on a silicon photonic chip is proposed and demonstrated. Two sets of optical phased array antennas are integrated on an optical chip to form a transmitter–receiver interleaved coaxial all-solid-state coherent optical system which provides high power efficiency, in principle, compared with a coaxial optical system using a 2 × 2 beam splitter. The solid-state scanning on the chip is realized by optical phased array without a mechanical structure. A 32-channel transmitter–receiver interleaved coaxial all-solid-state FMCW LiDAR chip design is demonstrated. The measured beam width is 0.4° × 0.8°, and the grating lobe suppression ratio is 6 dB. Preliminary FMCW ranging of multiple targets scanned by OPA was performed. The photonic integrated chip is fabricated on a CMOS-compatible silicon photonics platform, providing a steady path to the commercialization of low-cost on-chip solid-state FMCW LiDAR.

Published
2023
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10. A Quantitative Analysis of Superblocks Based on Node Removal

Author

Lingxuan Zhang, Monica Menendez, and Bin Shuai

Subjects
Urban traffic, block size, superblocks, traffic performance, node removal, Electrical engineering. Electronics. Nuclear engineering, TK1-9971
Abstract

Superblocks are city blocks whose size is significantly larger than average. Despite their widespread use across countries such as China, few studies have investigated how these superblocks affect network traffic performance. This paper aims to narrow that gap in knowledge. To that end, we use a grid network emulating a dense city environment. Then, multiple scenarios corresponding to size, location, shape, and number of superblocks are designed by removing nodes and related links. We evaluate network traffic performance by considering the factors of travel distance, travel time, volume-to-capacity ratios on nodes and links, as well as the level of traffic heterogeneity. The results indicate that superblocks with relatively small size (i.e. less than 1/4 of the network size) do not affect traffic significantly. The importance and connectivity of nodes and links related to superblocks are crucial factors affecting the overall traffic performance. In general, the more central the superblock, the larger its influence on the network traffic, except for extremely large superblocks that can significantly affect traffic when located in the periphery, as they lead to high traffic heterogeneities. Rectangular superblocks are more detrimental than square ones. Furthermore, traffic performance can be significantly improved by dividing the superblock into several relatively smaller blocks. Our results should be of direct interest to city-planning decision-makers in dense urban centers.

Published
2020
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11. Integrated Optical Filter Using Spiral-Based Cascaded Mach–Zehnder Interferometers

Author

Zhiqiang Ge, Chao Zeng, Yongkang Gong, Lingxuan Zhang, Guoxi Wang, Leiran Wang, Qibing Sun, Jinhai Si, Wei Zhao, and Wenfu Zhang

Subjects
Cascaded Mach-Zehnder interferometers, curved coupler, filter, spiral waveguide, wavelength-division demultiplexers, wavelength dependence., Applied optics. Photonics, TA1501-1820, Optics. Light, QC350-467
Abstract

We have proposed a new compact integrated optical filter based on cascaded Mach-Zehnder interferometers (MZIs), and designed corresponding coupling structures without S-bend. The wavelength dependence and fabrication tolerance of coupling structures constructed in straight waveguides and bent waveguides were sufficiently analyzed by the finite-difference time-domain (FDTD) method. The results showed that the curved coupler possesses property of broadband with large fabrication tolerance. Specifically, for the presented 3 dB coupler incorporated with the asymmetric curved waveguides, the deviation of transmission remained below 2% at wavelength from 1.5 to 1.6 μm, which is greatly helpful to broadband spectral response of cascaded MZIs. By connecting curved couplers with spiral waveguides, a filter by means of two-stages cascaded MZIs was optimally demonstrated to realize a channel spacing of 10 nm. The spiral-based MZIs filter (SBMF) provides a new reference for MZIs filter limited by footprint and wavelength dependence.

Published
2019
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12. Si Photonics for Practical LiDAR Solutions

Author

Xiaochen Sun, Lingxuan Zhang, Qihao Zhang, and Wenfu Zhang

Subjects
si photonics, opa, lidar, tof, fmcw, Technology, Engineering (General). Civil engineering (General), TA1-2040, Biology (General), QH301-705.5, Physics, QC1-999, Chemistry, QD1-999
Abstract

In the article the authors discuss light detection and ranging (LiDAR) for automotive applications and the potential roles Si photonics can play in practice. The authors review published research work on Si photonics optical phased array (OPA) and other relevant devices in the past decade with in-depth technical analysis with respect to practical system design considerations. The commercialization status of certain LiDAR technologies is briefly introduced.

Published
2019
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13. Kinematics and dynamics analysis of a novel 2PC-CPR parallel mechanism

Author

Sheng Lin, Shuilan Wang, Chun Wang, Lingxuan Zhang, and Yun Zhai

Subjects
Electronics, TK7800-8360, Electronic computers. Computer science, QA75.5-76.95
Abstract

A novel parallel mechanism of two translations and one rotation freedom degrees two-prismatic joint-cylindrical joint-one-cylindrical joint-prismatic joint-revolute joint (2PC-CPR) is proposed. The mechanism can be applied to write Chinese characters and to classify productions with the appropriated control. In this article, the kinematics and dynamics analysis are systematically conducted with the following procedure. First of all, the 2PC-CPR parallel mechanism is designed by G F set and the freedom degree of the mechanism is calculated using screw theory. Then the formula for solving the inverse/forward displacement, velocity, and acceleration is derived based on the geometrical constraints. The dynamics model is established by using virtual work principle. Finally, kinematics SimMechanics model is created by the co-simulation of SolidWorks and MATLAB software, and its workspace is analyzed.

Published
2016
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19. Two-dimensional single-lobe Si photonic optical phased array with minimal antennas using a non-uniform large spacing array design

Author

Yulong Xue, Qihao Zhang, Yangming Ren, Yufang Lei, Xiaochen Sun, and Lingxuan Zhang

Subjects
Electrical and Electronic Engineering, Engineering (miscellaneous), Atomic and Molecular Physics, and Optics
Abstract

We report a two-dimensional Si photonic optical phased array (OPA) optimized for a large optical aperture with a minimal number of antennas while maintaining single-lobe far field. The OPA chip has an optical aperture of ∼ 200 µ m by 150 µm comprising a 9 × 9 antenna array. The two-dimensional spacings between these antennas are much larger than the wavelength and are highly non-uniform optimized by the genetic deep learning algorithm. The phase of each antenna is independently tunable by a thermo-optical phase shifter. The experimental results validate the design and exhibit a 0.39 ∘ × 0.41 ∘ beamwidth within the 3 dB steering range of 14 ∘ × 11 ∘ limited by the numerical aperture of the far-field camera system. The method can be easily extended to a larger aperture for narrower beamwidth and wider steering range.

Published
2022

20. Single-nucleus profiling of adult mice sub-ventricular zone after blast-related traumatic brain injury

Author

Manrui Li, Xiameng Chen, Qiuyun Yang, Shuqiang Cao, Steven Wyler, Ruixuan Yuan, Lingxuan Zhang, Miao Liao, Meili Lv, Feng Wang, Yadong Guo, Jihong Zhou, Lin Zhang, Xiaoqi Xie, and Weibo Liang

Subjects
Statistics and Probability, Library and Information Sciences, Statistics, Probability and Uncertainty, Computer Science Applications, Education, Information Systems
Abstract

Explosive blast-related traumatic brain injuries (bTBI) are common in war zones and urban terrorist attacks. These bTBIs often result in complex neuropathologic damage and neurologic complications. However, there is still a lack of specific strategies for diagnosing and/or treating bTBIs. The sub-ventricular zone (SVZ), which undergoes adult neurogenesis, is critical for the neurological maintenance and repair after brain injury. However, the cellular responses and mechanisms that trigger and modulate these activities in the pathophysiological processes following bTBI remain poorly understood. Here we employ single-nucleus RNA-sequencing (snRNA-seq) of the SVZ from mice subjected to a bTBI. This data-set, including 15272 cells (7778 bTBI and 7494 control) representing all SVZ cell types and is ideally suited for exploring the mechanisms underlying the pathogenesis of bTBIs. Additionally, it can serve as a reference for future studies regarding the diagnosis and treatment of bTBIs.

Published
2022

23. Precise measurements of branching fractions for D s + $$ {\mathrm{D}}_{\mathrm{s}}^{+} $$ meson decays to two pseudoscalar mesons

Author

J. Y. Liu, F. Li, J. F. Sun, F. C. Ma, Y. H. Xie, Y. Schelhaas, S. Marcello, Y. Zeng, Zhe Sun, M. Maggiora, Q. An, S. Lusso, I. Uman, Ling Zhao, T. Sun, Z. Ning, S. Y. Xiao, X. Liu, Lei Zhao, Z. L. Hou, Q. Q. Song, X. H. Xie, J. F. Qiu, L. Fava, Zhi Yang, H.R. Qi, Serkant Ali Cetin, S. Jaeger, P. Larin, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, I. B. Nikolaev, Y. H. Zheng, Cong-Feng Qiao, Shuangli Yang, X. N. Ma, Y. Fu, X. Wang, Jinfei Wu, N. Yu. Muchnoi, Y. H. Zhang, Z. Y. Wang, Yi Chen, Y. B. Zhao, G. Y. Tang, M. Fritsch, Huanhuan Liu, G. Felici, M. Bertani, C. Z. Yuan, N. Cao, X. C. Dai, Lei Zhang, C. W. Wang, G. Rong, M. Kuemmel, Matthew Glenn Kurth, Y. C. Zhu, W. Shan, Jie Zhao, Muhammad Irshad, Jianhao Zhang, J. Dong, L. Yang, H. M. Hu, X. F. Cui, M. Kavatsyuk, H. C. Shi, S. Qian, Jialun Ping, Ke Liu, X. Y. Zhang, C. J. Tang, Y. Hu, H. B. Jiang, W. Imoehl, Xi Yuan, G. Yu, Y. P. Lu, Jiawei Zhang, X. L. Wang, S. Nisar, A. Calcaterra, Z. G. Zhao, F. A. Harris, W. L. Chang, B. X. Zhang, L. Z. Liao, Evelina Gersabeck, Z. A. Liu, T. Held, F. Nerling, J. B. Liu, X. H. Li, L. Wollenberg, Y. J. Sun, Yifan Yang, Ke Wang, W. Y. Sun, Y. Wang, W. Gradl, H. Leithoff, H. J. Li, P. W. Luo, W. J. Zhu, X. D. Shi, W. P. Wang, H. H. Zhang, S. Ahmed, Y. X. Yang, Xiao-Rui Lyu, Zhiqing Liu, Z. H. Qin, Guangshun Huang, J. Libby, Yaquan Fang, Zongyuan Wang, M. Lellmann, L. Q. Qin, M. Kuessner, T. Y. Qi, H. Qi, X D Shi, J. F. Chang, D. Y. Liu, J. B. Jiao, Y. J. Mao, H. X. Yang, D. Y. Wang, S. Maldaner, Y. G. Gao, J. Zhu, J. Q. Li, A. Q. Guo, A. Pitka, John Jake Lane, L. K. Li, F. Weidner, Q. Ouyang, Y. P. Guo, M. Himmelreich, V. Rodin, B. L. Wang, Q. Zhao, Y. Z. Sun, S. S. Fang, C. Y. Guan, Yao Wang, S. H. Zhu, J. Tang, O. B. Kolcu, T. Yu, H. Y. Zhang, Haiwen Liu, B. Kopf, B. C. Ke, R. S. Shi, M. Albrecht, K. Schoenning, Y. Gao, B. S. Zou, X. B. Ji, Y. B. Liu, K. L. He, P. Patteri, S. Y. Li, R. B. de Boer, Xiang Zhou, I. K. Keshk, Patrik Adlarson, J. H. Yin, J. Bloms, Huihui Liu, Chong-Xing Yue, Ziyi Wang, X. Cai, M. X. Luo, Dylan Jaide White, L. Lavezzi, X. K. Zhou, Yunlong Zhang, C. X. Lin, B. Q. Wang, M. Shao, Y. T. Gu, Zujian Wang, D. Bettoni, Y. Bai, M. Z. Wang, Niklaus Berger, Q. A. Malik, G. Mezzadri, Hao Liang, X. L. Luo, J. G. Messchendorp, D. V. Dedovich, R. Kliemt, Jimin Zhao, Q. Liu, A. Mangoni, A. Guskov, Z. J. Xiao, M. Rump, Gang Zhao, S. Nakhoul, Jie Yu, J. P. Dai, K. Begzsuren, L. Koch, A. Khoukaz, R. Poling, G. F. Chen, P. L. Li, J. Y. Zhang, M. N. Achasov, F. Bianchi, B. T. Tsednee, Jianping Zheng, Minglin Ma, X. Q. Hao, Yan Zhang, K. J. Zhu, L. L. Ma, Wenbin Qian, R. Farinelli, L. Gong, L. Yan, M. Qi, F. Feldbauer, P. R. Li, R. Baldini Ferroli, X. L. Ji, Y. M. Ma, Z. P. Mao, H. J. Yang, G. Cibinetto, R. Kappert, X. Y. Jiang, T. J. Min, W. H. Wang, Stephen Lars Olsen, K. Y. Liu, I. Garzia, G. A. Chelkov, C. Li, A. Sarantsev, D. H. Wei, Feng Liu, H. L. Ma, T. Lenz, D. M. Li, J. S. Lange, Xu Yan, W. G. Li, S. Malde, Y. X. Zhao Zhao, Bingxuan Liu, G. Wilkinson, A. Amoroso, Y. K. Sun, W. S. Cheng, J. Fang, Z. Huang, Yao Zhang, G. Li, A. Gilman, X. L. Lu, M. Ablikim, R. T. Ma, M. Destefanis, Z. Y. Yuan, X. S. Kang, Hong Wang, H. B. Li, Q. P. Ji, S. Spataro, X. P. Xu, X. F. Wang, M. Pelizaeus, Y. X. Song, C. D. Fu, A. G. Denig, C. Q. Feng, C. L. Luo, X. R. Chen, Q. Zhou, Z. Y. Deng, A. Dbeyssi, A. Yuncu, Y. G. Xie, Lei Li, Ch. Rosner, T. Liu, J. L. Li, G. F. Xu, Xingguo Li, Li Zhou, L. Liu, B. Zhong, L. B. Guo, Y. Zhang, S. B. Liu, D. C. Shan, G. X. Sun, J. V. Bennett, H. Xiao, Ziyuan Li, M. G. Zhao, Y. H. Yang, S. F. Zhang, X. X. Ma, W. M. Song, M. Rolo, S. X. Du, Angelo Rivetti, Y. R. Hou, Haiping Peng, Tao Luo, G. F. Cao, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, W. Yuan, Tao Zhang, H. J. Lu, J. G. Lu, Anita, S. Gu, T. T. Han, Jia-Shu Lu, F. De Mori, X. H. Mo, R. X. Yang, M. H. Ye, S. J. Zhao, Magnus Wolke, F. Cossio, T. Z. Han, Y. F. Liang, Meng Wang, Ruiting Ma, Z. Jiao, Fu-Hu Liu, Z. Qian, B. X. Yu, Q. J. Xu, Xu Shan, F. E. Maas, T. Hu, A. Bortone, Xuanhong Lou, Viktor Thorén, Nasser Kalantar-Nayestanaki, X. L. Gao, H. S. Chen, Yue Pan, O. Bakina, H. L. Dai, Igor Boyko, C. Dong, S. Sosio, L. L. Wang, H. Cai, P. X. Shen, Z. Wu, Joachim Pettersson, L. Q. Huang, Q. M. Ma, Andrzej Kupsc, Zhiqing Zhang, M. L. Chen, Y. Yuan, F. X. Lu, Shan Jin, K. Goetzen, Jacek Biernat, Yi Zhang, S. Zhang, L. Y. Dong, C. X. Liu, Y. F. Wang, J. Zhao, T. Hussain, X. Y. Ma, W. X. Gong, A. Pathak, Wei Li, Y. K. Heng, C. Zhong, J. Q. Zhang, Jianyu Zhang, C. F. Redmer, J. F. Hu, C. Schnier, Y. Q. Wang, Lingxuan Zhang, Y. X. Tan, Zhiyong Zhang, A. Zhemchugov, X. T. Huang, Z. X. Meng, X. A. Xiong, X. P. Qin, A. A. Zafar, Y. F. Long, K. Ravindran, M. Greco, K. H. Rashid, Klaus Peters, Y. T. Liang, S. J. Chen, V. Prasad, S. Han, X. Pan, L. H. Wu, M. Savrie, Yi Jin, Y. Ban, P. Weidenkaff, L. Xia, F. H. Heinsius, Y. J. Xiao, S. Janchiv, Y. Nefedov, S. P. Wen, R. P. Guo, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Tord Johansson, X. R. Zhou, L. M. Gu, P. Kiese, Cheng Li, R. A. Briere, X. S. Jiang, Wei Xu, J. L. Zhang, F. F. Sui, M. H. Gu, R. Kiuchi, C. X. Yu, B. Zheng, R. G. Ping, I. Balossino, Fang Liu, I. Denysenko, L. J. Wu, X. Wu, Y. J. Mo, Shuai Liu, J. J. Xu, Guangyi Zhang, X. Y. Shen, W. B. Yan, Y. Ding, B. J. Liu, T. Y. Xing, D. Y. Chen, W. Kühn, Z. Y. You, Z. A. Zhu, W. C. Yan, S. Pacetti, C. H. Li, C. P. Shen, N. Huesken, Y. H. Tan, Ke Li, M. Y. Dong, H. B. Liu, J. H. Zou, S. S. Sun, X. S. Qin, R. E. Mitchell, and T. Holtmann

Subjects
Physics, Nuclear and High Energy Physics, Meson, 010308 nuclear & particles physics, Branching fraction, e +-e − Experiments, 01 natural sciences, Pseudoscalar, Crystallography, 0103 physical sciences, lcsh:QC770-798, ddc:530, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, 010306 general physics, Charm physics
Abstract

Journal of high energy physics 2020(8), 146 (2020). doi:10.1007/JHEP08(2020)146, Published by SISSA, [Trieste]

Published
2020

24. Bilevel Optimization Model Considering Modal Split for Number and Location of Gates in a Superblock

Author

Minhao Xu, Monica Menendez, Lingxuan Zhang, and Bin Shuai

Subjects
Urban Studies, Mathematical optimization, Modal, City block, Computer science, Geography, Planning and Development, Pedestrian, Development, Bilevel optimization, Civil and Structural Engineering
Abstract

Superblocks are city blocks whose size is significantly larger than average for a city block. They are considered to be close if they only have a few gates connecting the pedestrian and ca...

Published
2021

26. Genetic Deep Learning for Photonic Device Inverse Design

Author

Lingxuan Zhang, Wenfu Zhang, Yangming Ren, and Xiaochen Sun

Subjects
Flexibility (engineering), Training set, Silicon photonics, business.industry, Computer science, Deep learning, Electronic engineering, Deep neural networks, Inverse, Artificial intelligence, Photonics, business
Abstract

We demonstrate an inverse design method by combining deep neural networks and genetic optimization. The method significantly reduces the training data compared with existing methods. The method is adopted to design some ultra-compact photonic devices to show its high computing efficiency and great flexibility.

Published
2021

27. Effective half-wavelength pitch optical phased array design for aliasing-free 2D beam steering

Author

Yufang, Lei, Lingxuan, Zhang, Yulong, Xue, Yangming, Ren, Qihao, Zhang, Wenfu, Zhang, and Xiaochen, Sun

Subjects
Electrical and Electronic Engineering, Engineering (miscellaneous), Atomic and Molecular Physics, and Optics
Abstract

We present a method to design an optical phased array (OPA) simultaneously realizing both narrow beam width and aliasing-free 2D beam steering without the need to arrange the antennas at actual half-wavelength pitch. The method realizes an effective half-wavelength pitch in one direction formed by location projection of the antennas. The distances between the antennas in the other direction can be sufficiently large to form an effective large aperture realizing narrow beam width without needing a long grating. The presented method is proven by both theory and numerical simulations to achieve an equivalent grating-lobe-free far field of an ordinary half-wavelength pitch design. One design example exhibits 180° steering with a minimal beam width of 0.4° * 0.032° and a sidelobe suppression ratio of > 13 d B .

Published
2022

28. Amplitude analysis and branching fraction measurement of Ds+→K−K+π+π0

Author

M. M. Ma, J. Libby, Meng Wang, A. A. Zafar, X. Pan, H. Leithoff, Tao Luo, W. Xu, Achim Denig, B. X. Yu, M. Albrecht, R. P. Guo, G. Y. Tang, C.-H. Rosner, X. L. Ji, Yanjia Xiao, J. J. Lane, Yaquan Fang, Y. Z. Sun, Krisztian Peters, F. Bianchi, K. H. Rashid, A. Pitka, Y. Fu, S. J. Zhao, Y. C. Zhu, Y. Ding, S. Yang, L. D. Liu, W. G. Li, X. Cai, Xiang Zhou, I. K. Keshk, T. Held, M. Bertani, X. L. Zhu, F. C. Ma, Y. T. Liang, B. J. Liu, M. X. Luo, P. Kiese, Yuyi Wang, C. X. Lin, X. Sun, Gang Zhao, D. Y. Chen, Yongke Zhao, G. Mezzadri, M. Qi, J. Y. Liu, B. C. Ke, S. J. Chen, S. X. Du, K. Schoenning, B. S. Zou, Y. K. Sun, Z. Huang, O. Bakina, H. J. Yang, S. Y. Xiao, W. Kühn, H. M. Liu, Yao Wang, L. P. Zhou, J. W. Zhang, J. D. Lu, Xujin Yuan, Fang Liu, Q. P. Ji, S. Spataro, J. Z. Zhang, Z. A. Liu, Y. Pan, M. G. Kurth, V. Prasad, R. Baldini Ferroli, Z. Y. You, Q. A. Malik, X. R. Lyu, Bingxuan Liu, G. Wilkinson, Y. Ban, S. Lusso, Guangshun Huang, L. Yan, M. Kuessner, I. Garzia, A. Zhemchugov, R. Poling, F. H. Heinsius, S. Pacetti, S. B. Liu, X. C. Dai, W. Y. Sun, T. Holtmann, L. L. Ma, G. Chelkov, L. Gong, B. Q. Wang, A. N. Zhu, Lei Li, S. Han, L. H. Wu, H. S. Chen, M. Rolo, X. X. Ma, Yao Zhang, G. Li, J. F. Qiu, Zhi Yang, L. Y. Dong, L. M. Gu, X. A. Xiong, P. R. Li, Y. M. Ma, Z. P. Mao, Y. Bai, A. Gilman, D. Bettoni, Yifan Yang, Y. G. Gao, W. H. Wang, C. X. Liu, S. Nakhoul, S. H. Zhu, Shuai Liu, J. F. Sun, X. L. Lu, R. A. Briere, L. Xia, A. Amoroso, S. P. Wen, X. R. Zhou, Y. Zhang, S. S. Fang, C. P. Shen, F. Li, C. D. Fu, N. Yu. Muchnoi, Magnus Wolke, Cheng Li, J. Q. Li, A. Q. Guo, C. Zhong, S. Marcello, C. H. Li, Y. R. Hou, J. J. Xu, Guangyi Zhang, T. Yu, J. Bloms, C. Q. Feng, Y. G. Xie, X. R. Chen, D. C. Shan, X. Wu, S. Janchiv, M. G. Zhao, Y. H. Yang, L. Fava, J. F. Wu, Y. F. Liang, X. Wang, S. Jaeger, S. L. Olsen, P. Larin, Zhe Sun, F. Feldbauer, X. Y. Jiang, Y. Schelhaas, Z. Wu, A. Dbeyssi, M. Himmelreich, S. Maldaner, X. S. Jiang, F. H. Liu, X. H. Mo, J. Dong, Z. Y. Deng, Y. J. Mo, M. Lellmann, X. Y. Shen, Feng Liu, X. H. Xie, M. L. Chen, B. Zheng, Q. An, K. Wang, X D Shi, M. Rump, Z. H. Wang, Jianyu Zhang, J. Zhu, X. F. Wang, Shan Jin, Y. X. Zhao, Y. H. Xie, L. Lavezzi, K. Goetzen, S. A. Cetin, O. B. Kolcu, Y. J. Mao, W. C. Yan, H. X. Yang, F. Cossio, L. J. Wu, H. Liang, Y. H. Zheng, M. Ablikim, Q. Liu, P. Patteri, J. J. Song, C. Schnier, Y. Q. Wang, L. Sun, Xu Yan, Xingguo Li, N. Huesken, A. Calcaterra, H. J. Li, L. Q. Qin, B. Kopf, L. Koch, M. Maggiora, C. F. Qiao, Ling Zhao, W. X. Gong, Z. Y. Wang, Yi Chen, X. T. Huang, F. Weidner, L. L. Wang, H. Cai, G. Rong, Z. A. Zhu, X. D. Shi, P. W. Luo, Muhammad Irshad, W. B. Yan, F. De Mori, T. Y. Qi, Lei Zhao, Ziyi Wang, H. P. Wang, H. J. Lu, P. Adlarson, N. Cao, M. Fritsch, Z. L. Hou, X. N. Ma, X. K. Zhou, R. G. Ping, J. F. Hu, Lingxuan Zhang, Y. X. Tan, R. B. de Boer, M. Z. Wang, G. X. Sun, J. V. Bennett, Huihui Liu, Jacek Biernat, M. N. Achasov, S. Zhang, Z. J. Xiao, W. Imoehl, H. L. Ma, X. S. Kang, Zhiyong Zhang, G. F. Chen, M. H. Ye, M. Kuemmel, S. Y. Li, P. L. Li, H. Y. Zhang, F. E. Maas, H. Xiao, Ziyuan Li, T. Hu, G. F. Cao, J. Z. Zhao, H. L. Dai, H. Muramatsu, Z. Y. Yuan, S. S. Sun, I. Denysenko, J. G. Messchendorp, A. Yuncu, W. Shan, X. P. Qin, J. Y. Zhang, W. L. Chang, X. Y. Ma, X. F. Cui, S. F. Zhang, J. Q. Zhang, C. Li, Ke Liu, K. L. He, S. Malde, R. Q. Ma, T. Sun, I. Boyko, L. K. Li, M. Pelizaeus, X. P. Xu, Z. Jiao, Z. Ning, J. P. Dai, Q. Zhou, R. Kappert, M. Kavatsyuk, L. Yang, C. F. Redmer, Y. F. Long, K. Ravindran, M. Greco, Q. M. Ma, J. P. Zheng, H. C. Shi, W. M. Song, Zhiqing Liu, W. B. Qian, Y. H. Tan, V. Rodin, Y. K. Heng, T. T. Han, P. X. Shen, F. F. Sui, W. D. Li, G. F. Xu, R. Kiuchi, Ke Li, Andrzej Kupsc, M. Ye, H. B. Jiang, Jiawei Zhang, W. J. Zhu, T. Lenz, Y. Yuan, T. Johansson, C. Z. Yuan, B. X. Zhang, Anita, S. Gu, M. Y. Dong, S. Qian, A. Khoukaz, H. R. Qi, D. M. Li, X. L. Luo, Yi Zhang, Y. Zeng, Haiping Peng, N. Berger, H. B. Liu, H. B. Li, F. X. Lu, T. Y. Xing, K. Y. Liu, Y. Nefedov, Zhiqing Zhang, Y. X. Song, D. Y. Wang, C. W. Wang, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, B. L. Wang, T. Liu, J. H. Zou, F. Nerling, G. Cibinetto, D. J. White, Y. F. Wang, C. X. Yue, C. X. Yu, Qiang Zhao, S. Nisar, X. Q. Hao, Q. J. Xu, J. Zhao, I. B. Nikolaev, C. J. Tang, Y. Hu, R. T. Ma, L. Q. Huang, Yan Zhang, J. H. Yin, T. Hussain, Y. P. Lu, A. Bortone, W. Gradl, Lei Zhang, R. Kliemt, Xuanhong Lou, M. Shao, Y. T. Gu, Viktor Thorén, A. Sarantsev, X. S. Qin, J. L. Zhang, B. Tsednee, W. S. Cheng, D. Y. Liu, A. Pathak, I. Uman, Nasser Kalantar-Nayestanaki, P. Weidenkaff, H. M. Hu, W. P. Wang, Zongyuan Wang, D. H. Wei, J. S. Lange, R. E. Mitchell, K. J. Zhu, A. Mangoni, C. L. Luo, F. A. Harris, Q. Ouyang, B. Zhong, L. B. Guo, H. Qi, Y. B. Liu, Ulrich Wiedner, W. Yuan, Tao Zhang, Y. Jin, R. X. Yang, Huanhuan Liu, T. Z. Han, J. B. Jiao, Xu Shan, G. Yu, Z. G. Zhao, I. Balossino, G. Felici, H. H. Zhang, L. Z. Liao, X. H. Li, L. Wollenberg, Z. X. Meng, A. Rivetti, Jialun Ping, J. Fang, X. Y. Zhang, X. L. Wang, J. B. Liu, Y. J. Sun, J. G. Lu, K. Begzsuren, J. F. Chang, J. Tang, E. M. Gersabeck, Yunlong Zhang, X. Liu, Q. Q. Song, J. Y. Zhao, Z. H. Qin, T. J. Min, M. Destefanis, R. S. Shi, X. L. Gao, D. Dedovich, C. Dong, X. B. Ji, S. Sosio, Joachim Pettersson, R. Farinelli, C. Y. Guan, J. L. Li, J. S. Yu, A. Guskov, Y. P. Guo, Z. Qian, M. H. Gu, S. Ahmed, Y. X. Yang, Energy and Sustainability Research Institute Groni, and Research unit Nuclear & Hadron Physics

Subjects
Physics, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, Analytical chemistry, 01 natural sciences, NO, Subatomär fysik, Amplitude, Subatomic Physics, 0103 physical sciences, Pi, Atomic physics, 010306 general physics, Line (formation)
Abstract

We report an amplitude analysis and branching fraction measurement of Ds+→K+K−π+ decay using a data sample of 3.19 fb−1 recorded with BESIII detector at a center-of-mass energy of 4.178 GeV. We perform a model-independent partial wave analysis in the low K+K− mass region to determine the K+K− S-wave line shape, followed by an amplitude analysis of our very pure high-statistics sample. With the detection efficiency based on the amplitude analysis results, the absolute branching fraction is measured to be B(Ds+→K+K−π+)=(5.47±0.08stat±0.13sys)%.

Published
2021

29. Study of the process e+e−→ϕη at center-of-mass energies between 2.00 and 3.08 GeV

Author

Y. Schelhaas, S. Marcello, Y. Zeng, Zhe Sun, H. R. Qi, Q. Q. Song, Lu F. X., F. De Mori, Y. P. Guo, Y. B. Chen, Y. L. Fan, W. B. Yan, J. Z. Zhang, He K. L., Serkant Ali Cetin, C. L. Luo, H. S. Sang, J. J. Song, Q. Zhou, L. Sun, X. Y. Zhou, Hu J. F., J. B. Jiao, H. K. Sun, S. Qian, Q. An, Jialun Ping, B. Zhong, L. B. Guo, G. X. Sun, Li Yan, Liangbin Li, X. Y. Zhang, X. L. Wang, J. B. Liu, Y. J. Sun, S. Pacetti, F. Feldbauer, X. F. Wang, Ma X. X., H. F. Shen, Ye M. H., P. W. Luo, Z. Jiao, G. Y. Tang, T. T. Han, J. F. Shangguan, Meng Wang, Muhammad Irshad, X. H. Xie, Y. H. Tan, Xujin Yuan, S. J. Zhao, Jie Zhao, Z. L. Huang, X. L. Gao, M. H. Ye, C. H. Heinz, Z. A. Liu, Du S. X., C. Zhong, Yu B. X., A. N. Zhu, Xu Q. J., S. B. Liu, Alexey Zhemchugov, Z. H. Wang, V. Prasad, Ma R. T., Y. Yuan, S. L. Yang, F. A. Harris, W. L. Chang, Y. Ding, L. Zhang, H. J. Wang, A. Bortone, Xuanhong Lou, Y. H. Zheng, Viktor Thorén, F. H. Liu, M. Y. Dong, L. L. Wang, Y. Ban, M. Ablikim, Y. Nefedov, Mo Y. J., Nasser Kalantar-Nayestanaki, Nicolas Berger, Cong-Feng Qiao, M. Qi, Ji Q. P., H. Cai, L. Q. Huang, G. R. Liao, H. Leithoff, G. Y. Hou, H. J. Yang, B. J. Liu, Yue Pan, T. Y. Xing, D. Y. Chen, Y. B. Zhao, I. Balossino, Q. Liu, W. Shan, C. Dong, S. Sosio, C. Schnier, Y. Q. Wang, H. Y. Zhang, Xu G. F., X. S. Kang, J. Dong, S. P. Wen, L. D. Liu, A. Lavania, Li X. H., X. S. Qin, X. T. Huang, X. R. Zhou, F. Li, Yanping Huang, J. W. Zhang, R. Aliberti, Xu Shan, Qi K. H., X. D. Zhang, Li L. K., W. Kühn, Ma H. L., Y. H. Zhang, G. Rong, Yu J. S., J. H. Zou, Y. C. Zhu, Z. Y. You, G. F. Chen, Z. A. Zhu, J. Y. Zhang, I. B. Nikolaev, L. Gong, L. G. Xia, A. Amoroso, J. H. Yin, Lu H. J., M. Shao, C. X. Yue, S. S. Sun, Joachim Pettersson, X D Shi, Xiangcheng Pan, Li J. L., M. Kuemmel, Matthew Glenn Kurth, V. Rodin, Y. J. Mao, Z. Y. Wang, T. Liu, J. F. Qiu, Teresa Lenz, L. Fava, Zhi Yang, S. Nisar, Zhenxiong Yuan, C. J. Tang, Y. K. Heng, Yi Jin, X. F. Cui, M. Scodeggio, Hu H. M., A. Dbeyssi, H. X. Yang, I. Garzia, Qu S. Q., Yu C. X., Li D. M., M. Himmelreich, C. P. Shen, Y. Hu, Ma M. M., Y. P. Lu, S. Janchiv, F. Nerling, R. E. Mitchell, H. Xiao, Ge P. T., Z. X. Meng, T. Held, W. Imoehl, Angelo Rivetti, X. H. Liu, L. Q. Qin, M. G. Zhao, Y. H. Yang, R. P. Guo, J. Zhu, C. X. Liu, Wu J. F., Xu Y. C., B. Wang, X. Wu, A. Sarantsev, D. H. Wei, J. S. Lange, P. Patteri, Lu J. G., A. Calcaterra, Z. G. Zhao, L. Z. Liao, Peilian Liu, W. H. Wang, M. Fritsch, Y. Y. Wang, Yu Bai, A. A. Zafar, Lingxuan Zhang, Y. X. Tan, M. Kavatsyuk, Li J. S., H. H. Zhang, Christoph Herold, T. Yu, K. H. Rashid, G. S. Huang, M. Rolo, X. P. Qin, H. C. Shi, X. K. Zhou, Mo X. H., C.-H. Rosner, Lu X. L., U. Wiedner, I. Denysenko, Ma F. C., Li S. Y., R. Kappert, W. J. Zhu, Y. T. Liang, Rinaldo Baldini Ferroli, S. J. Chen, L. Y. Dong, J. G. Messchendorp, F. F. Sui, X. D. Shi, Dan Wang, B. X. Zhang, K. J. Li, Ji X. L., R. Kiuchi, Qi H. R., D. C. Shan, Ma R. Q., F. Cossio, K. J. Zhu, G. Wilkinson, Z. Qian, Wu L. J., Guangyi Zhang, M. Albrecht, Z. J. Chen, Wenbin Qian, C. Geng, Ma X. Y., J. B. Zhao, R. S. Shi, Y. B. Liu, Q. P. Ji, M. Lellmann, S. Maldaner, A. G. Denig, H. H. Liu, Wu L. H., H. B. Liu, S. Jin, Zujian Wang, W. H. Tian, Y. K. Sun, Y. G. Gao, B. Zheng, R. G. Ping, Li P. R., I. R. Boyko, W. S. Cheng, Yao Wang, Ke B. C., S. Spataro, B. Kopf, W. Y. Han, J. Tang, G. Li, J. L. Liu, Ma Q. M., X. Q. Hao, Y. T. Tian, S. H. Zhang, X. Y. Shen, Yunlong Zhang, M. H. Liu, Walter Ikegami Andersson, S. Nakhoul, H. M. Liu, J. M. Zhang, D. Bettoni, Su P. P., J. L. Zhang, S. Jaeger, G. F. Cao, Jimin Zhao, P. Larin, K. Goetzen, A. Q. Guo, C. Q. Feng, X. R. Chen, Jianping Zheng, M. X. Luo, Dylan Jaide White, C. F. Redmer, C. W. Wang, M. Bertani, D. V. Dedovich, N. Y.-U. Muchnoi, Z. Y. Deng, L. Yang, Hai-Tian Wang, K. Y. Liu, W. M. Song, J. J. Zhang, M. Destefanis, A. Q. Zhang, H. B. Jiang, W. P. Wang, W. Gradl, Y. X. Song, Z. H. Qin, R. Kliemt, A. Mangoni, A. Guskov, Qi T. Y., T. J. Min, G. Cibinetto, Y. X. Zhao, Y. H. Xie, M. Maggiora, Z. L. Hou, R. E. de Boer, M. Q. Jing, G. Felici, C. Z. Yuan, N. Cao, M. Kuessner, Ji X. B., T. Johansson, J. F. Chang, Li X. L., Y. F. Wang, Tao Sun, O. B. Kolcu, X. Dong, X. Cai, G. A. Chelkov, L. Lavezzi, Xu X. P., Z. Ning, S. Y. Xiao, An M. R., Gu Y. T., Xu Yan, Li Z. Y., H. J. Li, L. Wollenberg, Xingchao Dai, F. E. Maas, T. Hu, Gu L. M., O. Bakina, P. X. Shen, Z. H. Lei, F. Weidner, Z. Wu, Q. Ouyang, X. H. Bai, Zhiqing Zhang, S. S. Fang, C. Y. Guan, Li H. J., Li H. B., Li J. Q., E. M. Gersabeck, J. Q. Zhang, X. Zeng, T. Hussain, H. Liang, X. L. Luo, W. X. Gong, Fu C. D., A. Pathak, K. Begzsuren, C. H. Li, F. Bianchi, Li W. D., X. Q. Li, K. Ravindran, Gu M. H., D. Y. Liu, Jie Feng, Tong Zhu, P. Kiese, Yuan Hou, R. A. Briere, X. S. Jiang, J. Libby, S. Pogodin, Wei Xu, P. Adlarson, Yaquan Fang, M. Greco, Shou-hua Zhu, John Jake Lane, Guoqiang Yu, Su K. X., K. Schoenning, B. S. Zou, Q. A. Malik, Magnus Wolke, Y. F. Liang, Z. Y. Zhang, Y. G. Xie, Li W. G., L. Zhao, Xiao-Rui Lyu, Andrzej Kupsc, M. L. Chen, Wen-Zhao Liu, Ji Y. Y., I. Uman, J. Bloms, G. Mezzadri, W. C. Yan, N. Hüsken, Zhiqiang Liu, M. N. Achasov, L. P. Zhou, Z. P. Mao, Z. J. Xiao, J. Fang, R. Farinelli, Libo Zhang, H. Muramatsu, M. Pelizaeus, T. Holtmann, J. Y. Liu, F. Liu, Y. N. Gao, Y. Zhang, Feng Yan, Tao Luo, Zhi Zeng, Shulei Zhang, H. S. Chen, H. L. Dai, Li C. H., S. Ahmed, Y. X. Yang, Ke Wang, W. Y. Sun, Q. Zhao, X. Sun, Y. Z. Sun, Li Yuan, I. K. Keshk, C. X. Lin, Alexander Leon Gilman, M. Rump, Gang Zhao, R. Poling, F. H. Heinsius, Lu J. D., Ma L. L., L. Koch, A. Khoukaz, Krisztian Peters, S. Malde, M. Z. Wang, J. X. Teng, Lu Y. P., Haiping Peng, and J. F. Sun

Subjects
Physics, Particle physics, Range (particle radiation), Photon, Luminosity (scattering theory), Branching fraction, 010308 nuclear & particles physics, Electron–positron annihilation, Measure (mathematics), 01 natural sciences, Nuclear physics, Cross section (physics), 0103 physical sciences, Invariant mass, High Energy Physics::Experiment, Vector meson, Center of mass, Nuclear Experiment, 010306 general physics, Energy (signal processing)
Abstract

We study the process e^+e^− → π^+π^−ηγ, where the photon is radiated from the initial state. About 8000 fully reconstructed events of this process are selected from the BABAR data sample with an integrated luminosity of 469 fb^(-1). Using the π^+π^−η invariant mass spectrum, we measure the e^+e^− → π^+π^−η cross section in the e^+e^− center-of-mass energy range from 1.15 to 3.5 GeV. The cross section is well described by the Vector-Meson dominance model with four ρ-like states. We observe 49±9 events of the J/ψ decay to π^+π^−η and measure the product Γ_(J/Ψ → e^+e^−)B_(J/Ψ → π^+π^−η) = 2.34 ± 0.43_(stat) ± 0.16_(syst) eV.

Published
2021

30. Direct Measurement of the Branching Fractions B(ψ(3686)→J/ψX) and B(ψ(3770)→J/ψX) , and Observation of the State R(3760) in e+e−→J/ψX

Author

Y. J. Mo, P. W. Luo, Q. P. Ji, X. Y. Shen, Y. Ding, B. J. Liu, T. Y. Xing, D. Y. Chen, W. Kühn, Z. Y. You, Z. A. Zhu, W. C. Yan, T. Weber, C. P. Shen, F. Li, M. H. Ye, Y. H. Zheng, Cong-Feng Qiao, Huanhuan Liu, Q. Liu, X. L. Gao, F. C. Ma, L. K. Li, Y. F. Wang, Y. H. Xie, R. Kappert, S. Ahmed, M. Maggiora, G. Felici, J. Zhao, M. Bertani, N. Yu. Muchnoi, Y. Fu, Y. H. Zhang, L. L. Ma, L. Gong, V. Rodin, X. L. Ji, L. G. Xia, Ling Zhao, Lei Zhao, Z. Ning, M. Kuemmel, Matthew Glenn Kurth, X. B. Ji, Z. L. Hou, L. Yang, W. Shan, L Y Liu, Y. X. Yang, T. Liu, J. F. Qiu, T. Hussain, X. Y. Ma, J. L. Zhang, A. Amoroso, P. Patteri, L. Y. Dong, F. F. Sui, M. H. Gu, R. Kiuchi, W. X. Gong, X. F. Cui, S. Y. Xiao, G. F. Xu, G. Y. Tang, C. Dong, S. Sosio, R. S. Shi, L. Fava, Zhi Yang, A. Dbeyssi, M. X. Luo, Dylan Jaide White, H. B. Jiang, T. T. Han, Dong E. Liu, Yuyi Wang, Jiawei Zhang, D. V. Dedovich, Z. Y. Wang, Anita, S. Gu, X. H. Li, L. Wollenberg, A. Pathak, G. S. Huang, Evelina Gersabeck, Yao Wang, C. X. Yu, W. Gradl, X. S. Kang, Joachim Pettersson, C. Z. Yuan, Xingchao Dai, N. Cao, Y. X. Song, Angelo Rivetti, C. H. Li, W. J. Zhu, Bingxuan Liu, G. Wilkinson, D. Y. Wang, M. Qi, X. D. Shi, Zongyuan Wang, X. Wang, F. De Mori, Xujin Yuan, Y. C. Zhu, F. Nerling, H. J. Yang, Zujian Wang, W. Imoehl, B. Zheng, R. G. Ping, W. S. Cheng, Yao Zhang, Z. A. Liu, J. Tang, J. F. Sun, Y. Bai, G. Li, V. Prasad, Jie Zhao, F. Weidner, Si Li, A. Gilman, Q. Ouyang, I. B. Nikolaev, S. B. Liu, C. D. Fu, Y. Nefedov, S. J. Zhao, Yunlong Zhang, J. H. Yin, D. Bettoni, H. B. Li, Lei Zhang, A. G. Denig, C. L. Luo, M. Kuessner, Q. Zhou, J. B. Jiao, S. Marcello, C. Q. Feng, Y. Ban, P. Weidenkaff, Alexey Zhemchugov, H. M. Hu, P. Kiese, F. H. Heinsius, Y. G. Xie, Y. Zeng, Yuan Hou, M. Shao, Y. T. Gu, C. X. Yue, X. R. Chen, X. L. Lu, Zhe Sun, S. Lusso, Q. Zhao, R. A. Briere, S. P. Wen, Z. Y. Deng, S. S. Fang, C. Y. Guan, R. Poling, Hai-Tian Wang, X. R. Zhou, Cheng Li, Tao Sun, Jianping Zheng, Y. B. Liu, Xingguo Li, G. A. Chelkov, Y. Z. Sun, X. H. Xie, Q. M. Ma, X. N. Ma, B. Zhong, L. B. Guo, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, T. J. Min, X. Y. Jiang, X. S. Jiang, J. J. Song, R. Kliemt, X. L. Luo, T. Held, Shan Jin, K. Y. Liu, L. Sun, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, W. Yuan, L. Yan, K. Goetzen, Tao Zhang, Xiang Zhou, I. K. Keshk, A. Mangoni, Y. Yuan, A. Guskov, Jie Yu, M. Destefanis, A. Sarantsev, D. H. Wei, J. S. Lange, K. Begzsuren, M. M. Ma, S. X. Du, W. P. Wang, F. Bianchi, Krisztian Peters, C. X. Lin, R. X. Yang, Wei Xu, B. Kopf, J. W. Zhang, J. F. Hu, Lingxuan Zhang, Y. X. Tan, K. J. Zhu, T. Z. Han, B. Wang, S. L. Yang, P. Adlarson, G. Cibinetto, Xu Shan, K. L. He, Zhiyong Zhang, Ziyi Wang, M. Rump, Gang Zhao, J. L. Li, A. Yuncu, M. Rolo, M. Z. Wang, X. P. Qin, D. Y. Liu, S. Zhang, J. Q. Zhang, Jimin Zhao, T. Holtmann, P. L. Li, Jinfei Wu, X. H. Mo, A. Calcaterra, Z. G. Zhao, M. Kavatsyuk, I. Uman, Y. Zhang, F. Cossio, L. Z. Liao, Ruiting Ma, Y. P. Guo, L. D. Liu, Y. F. Long, K. Ravindran, M. Greco, L. L. Wang, H. Cai, Xiao-Rui Lyu, G. X. Sun, J. V. Bennett, H. C. Shi, H. Xiao, Ziyuan Li, J. Y. Liu, L. Q. Huang, Jacek Biernat, H. H. Zhang, Q. J. Xu, S. Nakhoul, Z. Jiao, Fu-Hu Liu, H. J. Lu, J. G. Lu, F. E. Maas, T. Hu, M. Lellmann, S. Jaeger, S. Maldaner, M. Albrecht, B. X. Zhang, O. Bakina, P. X. Shen, Z. Wu, Y. G. Gao, Yi Zhang, J. Q. Li, A. Q. Guo, Y. B. Zhao, Zhiqing Zhang, Zhiqing Liu, P. Larin, J. Dong, A. Bortone, C. X. Liu, R. P. Guo, C. Zhong, W. D. Li, F. Feldbauer, M. Himmelreich, R. Farinelli, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Feng Liu, T. Johansson, J. F. Chang, Stephen Lars Olsen, H. L. Ma, T. Lenz, J. Bloms, M. Ablikim, D. M. Li, S. Nisar, C. J. Tang, M. Pelizaeus, B. T. Tsednee, Xuanhong Lou, Viktor Thorén, Y. Hu, Y. P. Lu, O. B. Kolcu, L. Q. Qin, T. Y. Qi, Magnus Wolke, H. R. Qi, Nasser Kalantar-Nayestanaki, X. Cai, L. Lavezzi, S. H. Zhu, T. Yu, Y. F. Liang, X. Q. Hao, Yan Zhang, X. K. Zhou, R. T. Ma, S. F. Zhang, Yue Pan, Wenbin Qian, Y. Schelhaas, I. Balossino, X. Liu, Q. Q. Song, H. Y. Zhang, Jianyu Zhang, Serkant Ali Cetin, R. B. de Boer, H. J. Li, G. F. Chen, S. Qian, Q. An, Jialun Ping, X. Y. Zhang, Michael Papenbrock, X. L. Wang, J. B. Liu, Y. J. Sun, Yifan Yang, C. F. Redmer, J. D. Lu, J. Y. Zhang, C. Schnier, Y. Q. Wang, Z. J. Xiao, H. W. Wen, Y. K. Heng, X. T. Huang, G. Rong, M. G. Zhao, Y. H. Yang, X. X. Ma, J. Zhu, X. F. Wang, Andrzej Kupsc, Z. X. Meng, X. A. Xiong, H. Liang, M. L. Chen, A. A. Zafar, M. Fritsch, Ke Liu, K. H. Rashid, J. Libby, Y. T. Liang, Yaquan Fang, S. J. Chen, A. Pitka, John Jake Lane, Guoqiang Yu, S. Han, K. Schoenning, Y. Gao, B. S. Zou, Niklaus Berger, Q. A. Malik, G. Mezzadri, L. H. Wu, L. M. Gu, M. Savrie, L. P. Zhou, P. R. Li, Y. M. Ma, Z. P. Mao, Y. X. Zhao Zhao, Yi Jin, J. Fang, Y. J. Xiao, Ch. Rosner, S. Janchiv, Fang Liu, I. Denysenko, J. J. Xu, Guangyi Zhang, M. Y. Dong, H. B. Liu, Tao Luo, J. H. Zou, B. X. Yu, S. S. Sun, X. S. Qin, H. S. Chen, R. E. Mitchell, H. L. Dai, Igor Boyko, L. Koch, A. Khoukaz, Bibo Ke, W. B. Yan, R. Baldini Ferroli, M. N. Achasov, C. Li, S. Malde, S. Pacetti, Haiping Peng, Ke Wang, N. Huesken, W. Y. Sun, Ke Li, B. L. Wang, Meng Wang, Muhammad Irshad, F. A. Harris, W. L. Chang, H. Leithoff, C. W. Wang, Z. H. Qin, X D Shi, Y. J. Mao, H. X. Yang, I. Garzia, Huihui Liu, J. G. Messchendorp, J. P. Dai, W. G. Li, Y. K. Sun, Z. Huang, S. Spataro, X. P. Xu, Lei Li, H. M. Liu, G. F. Cao, L. J. Wu, and X. Wu

Subjects
Physics, 010308 nuclear & particles physics, Branching fraction, 0103 physical sciences, Analytical chemistry, General Physics and Astronomy, State (functional analysis), 010306 general physics, Branching (polymer chemistry), 01 natural sciences
Abstract

We report a measurement of the observed cross sections of e + e - → J / ψ X based on 3.21 fb - 1 of data accumulated at energies from 3.645 to 3.891 GeV with the BESIII detector operated at the BEPCII collider. In analysis of the cross sections, we measured the decay branching fractions of B ( ψ ( 3686 ) → J / ψ X ) = ( 64.4 ± 0.6 ± 1.6 ) % and B ( ψ ( 3770 ) → J / ψ X ) = ( 0.5 ± 0.2 ± 0.1 ) % for the first time. The energy-dependent line shape of these cross sections cannot be well described by two Breit-Wigner (BW) amplitudes of the expected decays ψ ( 3686 ) → J / ψ X and ψ ( 3770 ) → J / ψ X . Instead, it can be better described with one more BW amplitude of the decay R ( 3760 ) → J / ψ X . Under this assumption, we extracted the R ( 3760 ) mass M R ( 3760 ) = 3766.2 ± 3.8 ± 0.4 MeV / c 2 , total width Γ R ( 3760 ) tot = 22.2 ± 5.9 ± 1.4 MeV , and product of leptonic width and decay branching fraction Γ R ( 3760 ) e e B [ R ( 3760 ) → J / ψ X ] = ( 79.4 ± 85.5 ± 11.7 ) eV . The significance of the R ( 3760 ) is 5.3 σ . The first uncertainties of these measured quantities are from fits to the cross sections and second systematic.

Published
2021

31. PHGNN: Position-aware Graph Neural Network for Heterogeneous Graph Embedding

Author

Lingxuan Zhang, Zhongwei Chen, Junhua Tang, Linsen Li, and Hangjun Yang

Subjects
Set (abstract data type), Theoretical computer science, Computer science, Graph embedding, Feature vector, Node (networking), Feature extraction, Graph (abstract data type), Strong prior, Link (geometry)
Abstract

Heterogeneous graph embedding is to learn node representations that preserve both heterogeneity and semantic information of a heterogeneous graph, so as to facilitate various downstream tasks, such as node classification and link prediction. Most of the existing methods process the graph structure based on the meta-path to learn low-dimensional feature vectors. However, these methods need to manually set the meta-path which requires strong prior knowledge and omit the content features of the intermediate nodes along the meta-path. In this paper, we propose a novel heterogeneous graph neural network based on node position information (PHGNN). With this method, the meta-path is no longer required, and heterogeneous information can be automatically preserved. Specifically, the proposed framework consists of two main components: content-level learning and type-level learning. Content-level learning utilizes the features information of nodes to learn the importance of the edge-type based nodes to the target node, while type-level learning focuses on the importance of different types of nodes. With the two-level mechanism, PHGNN can hierarchically aggregate multi-type information. The experiments on multiple public datasets show that compared with state-of-the-art baselines, our proposed PHGNN model achieves significant and consistent improvements.

Published
2021

32. Integrated Optical Filter Using Spiral-Based Cascaded Mach–Zehnder Interferometers

Author

Wenfu Zhang, Yongkang Gong, Guoxi Wang, Zhiqiang Ge, Jinhai Si, Lingxuan Zhang, Chao Zeng, Leiran Wang, Wei Zhao, and Qibing Sun

Subjects
Coupling, Physics, business.industry, Finite-difference time-domain method, Physics::Optics, Mach–Zehnder interferometer, Atomic and Molecular Physics, and Optics, Wavelength, Optics, Filter (video), Astronomical interferometer, Channel spacing, Electrical and Electronic Engineering, Optical filter, business
Abstract

We have proposed a new compact integrated optical filter based on cascaded Mach-Zehnder interferometers (MZIs), and designed corresponding coupling structures without S-bend. The wavelength dependence and fabrication tolerance of coupling structures constructed in straight waveguides and bent waveguides were sufficiently analyzed by the finite-difference time-domain (FDTD) method. The results showed that the curved coupler possesses property of broadband with large fabrication tolerance. Specifically, for the presented 3 dB coupler incorporated with the asymmetric curved waveguides, the deviation of transmission remained below 2% at wavelength from 1.5 to 1.6 μm, which is greatly helpful to broadband spectral response of cascaded MZIs. By connecting curved couplers with spiral waveguides, a filter by means of two-stages cascaded MZIs was optimally demonstrated to realize a channel spacing of 10 nm. The spiral-based MZIs filter (SBMF) provides a new reference for MZIs filter limited by footprint and wavelength dependence.

Published
2019

33. Real time wall conditioning with lithium powder injection in long pulse H-mode plasmas in EAST with tungsten divertor

Author

Robert Lunsford, L. Wang, W. Xu, John Canik, J.S. Hu, Xianzu Gong, X. C. Meng, Alessandro Bortolon, Lingxuan Zhang, Mingguang Huang, East Team, Yaowei Yu, R. Maingi, Feng Ding, D.K. Mansfield, C. R. Wu, Guizhong Zuo, Z. Sun, and Songtao Mao

Subjects
010302 applied physics, Nuclear and High Energy Physics, Materials science, Materials Science (miscellaneous), Divertor, Evaporation, Analytical chemistry, chemistry.chemical_element, Plasma, Tungsten, lcsh:TK9001-9401, 01 natural sciences, 010305 fluids & plasmas, Nuclear Energy and Engineering, chemistry, Heat flux, Impurity, 0103 physical sciences, lcsh:Nuclear engineering. Atomic power, Lithium, Deposition (law)
Abstract

Real-time lithium powder injection has been applied to long-pulse (>30 s) H-mode plasmas in EAST. This replenishes the active lithium surface that is routinely consumed by plasma-wall interactions. The real-time injection of Li powder into long H-mode discharges effectively suppresses impurity influx and controls recycling on EAST, with an ITER-like tungsten upper divertor. With lithium powder injection, the concentrations W, Mo, and C were reduced by 50% compared to ELMy H-mode discharges. During lithium injection, two effects play a role in the suppression of impurities influx: a reduced divertor temperature and heat flux and hence reduced erosion, and impurity trapping via deposition of a Li film onto plasma-facing surfaces. The ‘fresh’ injected lithium replenishes the film deposited during daily morning evaporation, restoring the wall's pumping capability. Thus, a measurable reduction in the global recycling coefficient was observed. Keyword: Long pulse plasma, Lithium, Impurity, Recycling

Published
2019

34. Search for the reaction e+e−→χcJπ+π− and a charmoniumlike structure decaying to χcJπ± between 4.18 and 4.60 GeV

Author

J. H. Zou, Xiangcheng Pan, H. Liang, W. G. Li, A. G. Denig, S. S. Sun, Zhenxiong Yuan, G. Wilkinson, Y. K. Sun, W. S. Cheng, Yao Zhang, G. Li, X. L. Ji, Q. P. Ji, X. H. Mo, Tao Luo, S. Spataro, M. H. Ye, C. Zhong, T. Holtmann, Huanhuan Liu, J. Y. Liu, Z. Y. Zhang, Y. H. Xie, K. Goetzen, T. Johansson, M. Kuemmel, Matthew Glenn Kurth, J. F. Chang, L. L. Wang, Ke Liu, H. Cai, Lei Li, G. Felici, Q. Liu, Meng Wang, Muhammad Irshad, Y. F. Wang, Xu Yan, Jianyu Zhang, R. T. Ma, Lingxuan Zhang, O. B. Kolcu, H. R. Qi, C. D. Fu, C. Q. Feng, X. R. Chen, Y. X. Tan, B. X. Yu, X. Cai, L. Lavezzi, L. Q. Huang, Jacek Biernat, M. Maggiora, L. L. Ma, L. Gong, R. E. Mitchell, H. M. Liu, Yan Zhang, Y. N. Gao, Z. Y. Deng, Q. A. Malik, G. Mezzadri, Hai-Tian Wang, W. C. Yan, Zhiqiang Liu, X. F. Cui, Z. Ning, S. Y. Xiao, M. Qi, H. J. Yang, X. P. Qin, H. B. Li, Ling Zhao, Lei Zhao, Z. L. Hou, Shulei Zhang, Y. G. Xie, Y. Hu, I. B. Nikolaev, X. K. Zhou, Jinfei Wu, L. G. Xia, A. Amoroso, Y. Ding, Y. Zhang, C. L. Luo, Q. Zhou, L. M. Gu, M. N. Achasov, J. H. Yin, L. P. Zhou, Y. M. Ma, Z. P. Mao, H. J. Li, J. D. Lu, F. Feldbauer, C. Schnier, Y. Q. Wang, F. F. Sui, M. H. Gu, H. S. Chen, Alperen Yuncu, H. J. Lu, Xujin Yuan, Z. L. Huang, F. A. Harris, W. L. Chang, X. H. Li, L. Wollenberg, X. Q. Hao, M. Shao, Y. T. Gu, R. Kiuchi, Bibo Ke, Y. Fu, J. G. Lu, H. L. Dai, A. Dbeyssi, C. X. Yue, S. Nakhoul, R. S. Shi, Y. X. Zhao Zhao, B. Zhong, L. B. Guo, Feng Liu, W. B. Yan, J. Fang, B. J. Liu, Xingchao Dai, Lei Zhang, G. S. Huang, X. T. Huang, P. W. Luo, S. B. Liu, X. Y. Jiang, H. Leithoff, F. Li, E. M. Gersabeck, Y. H. Zheng, S. Jaeger, Cong-Feng Qiao, T. Y. Xing, D. Y. Chen, S. Qian, Q. An, Jialun Ping, C. Z. Yuan, N. Cao, S. Ahmed, Y. X. Yang, Ch. Rosner, X. Y. Zhang, J. Libby, X. L. Luo, G. Rong, X. L. Lu, F. E. Maas, T. Hu, W. J. Zhu, C. X. Yu, X. D. Shi, Dan Wang, Yaquan Fang, M. Greco, Angelo Rivetti, Shou-hua Zhu, F. C. Ma, Y. Nefedov, P. Larin, Zujian Wang, L. D. Liu, Zhang Li, S. Pacetti, S. Gu, A. N. Zhu, Tao Zhang, W. Kühn, X. L. Wang, L. Koch, A. Khoukaz, J. B. Liu, John Jake Lane, Guoqiang Yu, K. Begzsuren, Z. Y. You, Y. C. Zhu, X. L. Li, J. F. Sun, B. Zheng, R. G. Ping, Z. A. Liu, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, N. Yu. Muchnoi, N. Huesken, X. N. Ma, W. P. Wang, J. J. Xu, F. Bianchi, A. Sarantsev, D. H. Wei, P. R. Li, X. S. Kang, Y. H. Zhang, O. Bakina, J. S. Lange, Z. A. Zhu, Y. J. Sun, Yifan Yang, T. Z. Han, R. Baldini Ferroli, T. Hussain, Y. H. Tan, K. Schoenning, X. Y. Ma, W. X. Gong, Y. P. Lu, B. S. Zou, Andrzej Kupsc, D. C. Shan, S. Marcello, Ke Li, L. H. Wu, V. Prasad, F. De Mori, V. Rodin, Xiao-Rui Lyu, Y. Ban, P. Weidenkaff, Y. Zeng, Zhe Sun, S. Lusso, Xu Shan, H. Xiao, S. L. Olsen, Q. Zhao, Krisztian Peters, S. Malde, Y. Z. Sun, M. Bertani, M. L. Chen, M. Z. Wang, T. Y. Qi, L. Yang, D. Y. Liu, T. Held, B. Wang, P. X. Shen, Yi Jin, Fang Liu, S. P. Wen, M. Kuessner, M. Fritsch, H. Y. Zhang, T. Liu, J. F. Qiu, Y. B. Zhao, R. B. de Boer, L. Fava, Zhi Yang, X. P. Xu, X. B. Ji, C. X. Liu, X. S. Qin, X. R. Zhou, M. Ablikim, A. Pathak, W. Shan, F. X. Lu, Z. Y. Wang, J. Dong, Z. Wu, A. Calcaterra, Z. G. Zhao, I. K. Keshk, M. Himmelreich, Teresa Lenz, P. Patteri, Y. Schelhaas, U. Wiedner, I. Denysenko, H. B. Jiang, C. P. Shen, Jiawei Zhang, M. Kavatsyuk, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Cheng Li, Y. J. Xiao, Tao Sun, H. C. Shi, G. A. Chelkov, G. F. Chen, F. Nerling, J. Q. Li, W. H. Wang, J. J. Song, J. Y. Zhang, L. Sun, I. Uman, C. X. Lin, Yu Bai, Alexander Leon Gilman, Haiping Peng, M. Rump, Gang Zhao, W. Imoehl, H. H. Zhang, T. Yu, Q. Q. Song, C. H. Li, Xin Wu, L. Y. Dong, S. Janchiv, L. J. Wu, W. Gradl, X. F. Wang, Zhiqing Zhang, Shuai Liu, Ke Wang, S. Nisar, R. Kappert, C. J. Tang, B. X. Zhang, Q. M. Ma, X. H. Liu, L. Q. Qin, J. Bloms, Zongyuan Wang, W. Y. Sun, Z. J. Xiao, R. Kliemt, M. Lellmann, A. Mangoni, A. Guskov, Y. J. Mo, Y. P. Guo, S. Maldaner, Guangyi Zhang, P. Kiese, Yuan Hou, R. A. Briere, Y. X. Song, Z. X. Meng, X. A. Xiong, Jie Yu, F. Weidner, M. Albrecht, R. Poling, Serkant Ali Cetin, F. H. Heinsius, Wenbin Qian, X. S. Jiang, A. A. Zafar, Y. Yuan, Y. K. Heng, T. T. Han, L. Z. Liao, G. F. Xu, S. J. Zhao, S. Jin, Anita, Y. G. Gao, J. P. Dai, W. D. Li, B. L. Wang, W. L. Yuan, Q. Ouyang, S. S. Fang, C. Y. Guan, G. Y. Tang, J. B. Jiao, X. H. Xie, R. X. Yang, Wei Xu, A. Pitka, P. Adlarson, R. Farinelli, M. X. Luo, Dylan Jaide White, Y. B. Liu, S. L. Yang, K. H. Rashid, Yao Wang, M. M. Ma, B. T. Tsednee, D. V. Dedovich, H. B. Liu, J. B. Zhao, Jie Zhao, Magnus Wolke, T. J. Min, K. J. Zhu, Y. F. Liang, I. R. Boyko, J. Q. Zhang, B. Kopf, Q. J. Xu, Alexey Zhemchugov, H. M. Hu, A. Bortone, Xuanhong Lou, Y. T. Liang, H. L. Ma, D. M. Li, F. H. Liu, Nicolas Berger, Y. F. Long, K. Ravindran, G. Cibinetto, S. H. Zhang, X. Y. Shen, Viktor Thorén, Nasser Kalantar-Nayestanaki, H. Muramatsu, J. W. Zhang, Yi Zhang, S. J. Chen, Yue Pan, I. Balossino, G. X. Sun, J. V. Bennett, Li Yan, S. Y. Li, K. L. He, Ziyi Wang, M. Pelizaeus, K. Y. Liu, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, S. W. Han, Z. Jiao, Jimin Zhao, P. L. Li, C. F. Redmer, J. Tang, Yunlong Zhang, D. Bettoni, J. L. Zhang, Jianping Zheng, S. X. Du, M. Destefanis, J. L. Li, M. Rolo, F. Cossio, Ruiting Ma, Z. Qian, X. L. Gao, C. Dong, S. Sosio, Joachim Pettersson, J. F. Hu, G. F. Cao, A. Q. Guo, C. W. Wang, W. M. Song, Z. H. Qin, X D Shi, Y. J. Mao, H. X. Yang, I. Garzia, Huihui Liu, J. G. Messchendorp, and M. Y. Dong

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, 0103 physical sciences, Structure (category theory), State (functional analysis), 010306 general physics, 01 natural sciences, Energy (signal processing)
Abstract

We search for the process $e^{+}e^{-}\rightarrow \pi ^{+}\pi ^{-} \chi_{cJ}$ ($J=0,1,2$) and for a charged charmonium-like state in the $\pi ^{\pm} \chi_{cJ}$ subsystem. The search uses data sets collected with the BESIII detector at the BEPCII storage ring at center-of-mass energies between 4.18 GeV and 4.60 GeV. No significant $\pi ^{+}\pi ^{-} \chi_{cJ}$ signals are observed at any center-of-mass energy, and thus upper limits are provided which also serve as limits for a possible charmonium-like structure in the invariant $\pi ^{\pm} \chi_{cJ}$ mass.

Published
2021

35. Model-Independent Determination of the Spin of the Ω− and Its Polarization Alignment in ψ(3686)→Ω−Ω¯+

Author

K. Goetzen, R. Kappert, G. F. Xu, S. Jin, Anita, S. Gu, S. Lusso, L. D. Liu, J. J. Xu, K. Zhu, H. J. Lu, M. M. Ma, Q. A. Malik, Y. Fu, G. Mezzadri, M. X. Luo, Dylan Jaide White, B. Kopf, R. Farinelli, Qi Liu, D. V. Dedovich, Tao Luo, G. Felici, F. Li, J. Fang, F. E. Maas, T. Hu, Xujin Yuan, F. De Mori, Si Li, L. H. Wu, B. X. Yu, M. Kuessner, P. L. Li, W. B. Yan, M. N. Achasov, Y. C. Zhu, Z. L. Huang, A. Pitka, M. H. Ye, K. L. He, F. C. Ma, A. G. Denig, G. X. Sun, J. V. Bennett, Li Yan, H. L. Ma, J. B. Zhao, Q. P. Ji, M. Ablikim, K. Wang, S. Pacetti, L. M. Gu, L. P. Zhou, Y. F. Long, K. Ravindran, X. N. Ma, I. R. Boyko, J. L. Li, S. L. Yang, Xu Yan, Yi Jin, M. G. Zhao, Y. H. Yang, J. Zhu, Z. Jiao, Fu-Hu Liu, W. S. Cheng, D. M. Li, G. Li, X. H. Mo, Y. Nefedov, H. Xiao, H. B. Li, C. Y. Guan, Tao Sun, H. S. Chen, Alperen Yuncu, M. Rolo, S. H. Zhang, O. Bakina, Y. M. Ma, Z. P. Mao, Y. B. Zhao, H. Muramatsu, A. Khoukaz, Q. Zhou, N. Huesken, Y. H. Tan, Xiangcheng Pan, G. A. Chelkov, L. Q. Qin, H. L. Dai, Dong E. Liu, X. H. Li, L. Wollenberg, S. Spataro, A. Gilman, T. Y. Qi, Y. J. Xiao, B. Zhong, L. B. Guo, R. B. de Boer, J. Dong, C. D. Fu, Y. Ding, Xingchao Dai, P. X. Shen, Z. Wu, M. Pelizaeus, Shensheng Han, Q. M. Ma, L. Y. Dong, B. J. Liu, S. Janchiv, X. Liu, Zhenxiong Yuan, L. Koch, A. N. Zhu, Tao Zhang, Y. G. Xie, C. Q. Feng, G. F. Chen, M. Himmelreich, X. R. Chen, Y. Hu, S. Ahmed, T. Y. Xing, D. Y. Chen, C. F. Redmer, R. P. Guo, S. Q. Qu, F. Cossio, Z. B. Li, W. Ikegami Andersson, T. Liu, J. F. Qiu, Ch. Rosner, Lei Li, L. Fava, W. M. Song, J. H. Zou, S. Nisar, W. Kühn, Z. Y. Deng, Hai-Tian Wang, R. Baldini Ferroli, Xu Shan, M. Maggiora, Ling Zhao, Ruiting Ma, Y. P. Guo, C. Zhong, Z. Qian, S. X. Du, F. Weidner, M. Bertani, C. J. Tang, Y. Yuan, S. S. Sun, Z. Y. You, L. Z. Liao, Zhi Yang, P. Kiese, H. Liang, Yuan Hou, Z. A. Zhu, F. Nerling, C. Li, Krisztian Peters, W. L. Yuan, Lei Zhao, M. Kuemmel, Matthew Glenn Kurth, Q. Ouyang, W. Shan, Y. P. Lu, W. H. Wang, S. H. Zhu, S. Malde, R. A. Briere, M. Albrecht, J. F. Hu, M. Z. Wang, Z. L. Hou, A. Calcaterra, Xiao-Rui Lyu, Lingxuan Zhang, R. E. Mitchell, Magnus Wolke, Y. F. Liang, C. X. Lin, A. Q. Guo, J. Tang, D. Bettoni, Jianping Zheng, B. Wang, W. X. Gong, J. D. Lu, C. Schnier, X. T. Huang, G. Rong, Z. X. Meng, X. A. Xiong, B. C. Ke, A. A. Zafar, Q. Zhao, I. K. Keshk, X. F. Cui, L. L. Ma, L. Gong, L. G. Xia, G. S. Huang, Evelina Gersabeck, Y. K. Heng, T. T. Han, S. J. Zhao, P. W. Luo, C. P. Shen, S. S. Fang, T. Yu, Y. B. Liu, X. K. Zhou, T. Held, C. Z. Yuan, N. Cao, G. F. Cao, X. S. Jiang, C. W. Wang, Wei Xu, H. B. Jiang, M. Irshad, W. Gradl, Haiping Peng, X. P. Qin, U. Wiedner, I. Denysenko, C. X. Liu, H. H. Zhang, W. J. Zhu, Xin Wu, M. Lellmann, S. Maldaner, W. D. Li, B. T. Tsednee, Dan Wang, J. Bloms, M. Fritsch, M. Kavatsyuk, H. C. Shi, A. Amoroso, J. F. Sun, Wenbin Qian, Y. X. Song, M. Qi, H. J. Yang, W. Y. Sun, Shuai Liu, A. Dbeyssi, Z. H. Qin, B. X. Zhang, S. Marcello, K. Y. Liu, I. Uman, Guangyi Zhang, Y. Zeng, I. Garzia, Zhe Sun, V. Rodin, R. Poling, X D Shi, R. S. Shi, P. Adlarson, S. Nakhoul, Y. J. Mao, J. Libby, X. L. Lu, Yaquan Fang, M. Greco, J. L. Zhang, M. Destefanis, Z. Ning, S. Jaeger, S. Y. Xiao, M. Rump, Gang Zhao, X. L. Gao, X. P. Xu, X. B. Ji, M. H. Gu, K. H. Rashid, Y. B. Chen, R. Kiuchi, K. Begzsuren, P. Larin, Zujian Wang, Xiaofeng Zhu, Y. Bai, D. C. Shan, J. J. Song, C. Dong, S. Sosio, Y. F. Wang, L. Sun, F. Bianchi, C. X. Yu, T. Holtmann, Q. J. Xu, J. G. Messchendorp, Joachim Pettersson, P. Patteri, G. Y. Tang, J. P. Dai, F. F. Sui, H. Cai, X. H. Xie, B. Zheng, R. G. Ping, J. L. Ping, A. Bortone, Alexey Zhemchugov, H. M. Hu, Z. A. Liu, Xuanhong Lou, John Jake Lane, Viktor Thorén, Guoqiang Yu, L. Q. Huang, V. Prasad, Nasser Kalantar-Nayestanaki, Y. Ban, P. Weidenkaff, S. J. Chen, Jacek Biernat, C. L. Luo, I. B. Nikolaev, S. P. Wen, T. Hussain, R. Kliemt, K. Schoenning, Y. Gao, B. S. Zou, G. Wilkinson, Niklaus Berger, Yue Pan, I. Balossino, Y. Schelhaas, J. H. Yin, M. Shao, Y. T. Gu, Y. Zhang, Jinfei Wu, A. Pathak, A. Mangoni, Jie Yu, A. Rivetti, T. Johansson, J. F. Chang, Ke Li, A. Sarantsev, D. H. Wei, J. S. Lange, O. B. Kolcu, T. J. Min, X. Cai, L. Lavezzi, G. Cibinetto, X. Q. Hao, X. L. Wang, H. R. Qi, Q. Q. Song, Andrzej Kupsc, M. L. Chen, F. X. Lu, Serkant Ali Cetin, A. Guskov, S. Qian, Q. An, J. B. Liu, Y. J. Sun, W. Imoehl, J. B. Jiao, F. Feldbauer, F. H. Heinsius, F. A. Harris, W. L. Chang, Cong-Feng Qiao, H. Leithoff, N. Yu. Muchnoi, X. S. Kang, S. L. Olsen, and Teresa Lenz

Subjects
Physics, Particle physics, Branching fraction, High Energy Physics::Phenomenology, General Physics and Astronomy, Polarization (waves), Lambda, 01 natural sciences, Helicity, Omega, Amplitude, 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Bar (unit), Spin-½
Abstract

We present an analysis of the process $\psi(3686) \to \Omega^- \bar{\Omega}^+$ ($\Omega^-\to K^-\Lambda$, $\bar{\Omega}^+\to K^+\bar{\Lambda}$, $\Lambda\to p\pi^-$, $\bar{\Lambda}\to \bar{p}\pi^+$) based on a data set of $448\times 10^6$ $\psi(3686)$ decays collected with the BESIII detector at the BEPCII electron-positron collider. The helicity amplitudes for the process $\psi(3686) \to \Omega^- \bar{\Omega}^+$ and the decay parameters of the subsequent decay $\Omega^-\to K^-\Lambda$ $(\bar{\Omega}^+\to K^+\bar{\Lambda})$ are measured for the first time by a fit to the angular distribution of the complete decay chain. The branching fraction of $\psi(3686) \to \Omega^- \bar{\Omega}^+$ is measured to be $(5.82\pm 0.12\pm 0.24)\times 10^{-5}$, with an improved precision compared to previous measurements.

Published
2021

36. Sustained radiative divertor in high-performance grassy-ELM regime with metal wall towards long-pulse operation in EAST

Author

B. N. Wan, M.W. Chen, Xianzu Gong, Qingquan Yang, Feng Ding, G.-N. Luo, Huiqian Wang, Ning Yan, L.Y. Meng, E.Z. Li, Zhongshi Yang, Q.P. Yuan, J.B. Liu, J.C. Xu, Houyang Guo, Lingxuan Zhang, Kai Wu, L. Zeng, B.J. Xiao, Kedong Li, Yuqiang Tao, Bo Zhang, Yanmin Duan, Gang Xu, and L. Wang

Subjects
Nuclear and High Energy Physics, Tokamak, Materials science, Materials Science (miscellaneous), Nuclear engineering, Detachment feedback control, Radiation, 01 natural sciences, 010305 fluids & plasmas, law.invention, symbols.namesake, law, 0103 physical sciences, Radiative transfer, Langmuir probe, 010302 applied physics, Divertor, Plasma, lcsh:TK9001-9401, Nuclear Energy and Engineering, Extreme ultraviolet, Radiative divertor, symbols, Electron temperature, lcsh:Nuclear engineering. Atomic power, Grassy-ELM regime
Abstract

Simultaneous control of transient heat load induced by large-amplitude edge-localized modes (ELMs) and steady-state heat load on divertor targets under metal wall environment is crucial for steady-state operation of future tokamak fusion reactors, such as ITER and the China Fusion Engineering Test Reactor (CFETR). In the recent experiments, sustained partial energy detachment without confinement degradation has been achieved in the Experimental Advanced Superconducting Tokamak (EAST) in high-performance grassy-ELM H-mode with q95 ~ 5.9 by a newly developed detachment feedback control scheme, in which we first used electron temperature (Tet) measured by divertor Langmuir probes to identify the onset of energy detachment, and then the system switched to the feedback control of total radiation power measured by absolute extreme ultraviolet (AXUV) system. Tet around the upper outer strike point was successfully maintained less than 8 eV with seeding of 80% Ne and 20% D2 mixture from upper outer divertor, and the total radiation power was maintained ~1.4 MW, around 52% of injected power. There was no significant decrease of the plasma stored energy and H98,y2 factor (~1) over the entire detachment feedback control process. These experiment results demonstrate good compatibility of the high-performance grassy-ELM regime with radiative divertor. In order to confirm the compatibility in a wider range, stable partial energy detachment in grassy-ELM H-mode with relatively lower q95 (~5.4) was also achieved in EAST through the newly developed integrated-feedback-control technique. The new detachment feedback control without confinement degradation in grassy-ELM H-mode provides a candidate mode for EAST long-pulse operation in the future with well control of ELM-induced transient and steady heat fluxes on the divertor target.

Published
2021

37. Measurements of e+e−→ηcπ+π−π0 , ηcπ+π− , and ηcπ0γ at s from 4.18 to 4.60 GeV, and search for a Zc state close to the DD¯ threshold decaying to ηcπ at s=4.23 GeV

Author

Fang Liu, Q. A. Malik, Y. Ding, G. Mezzadri, W. C. Yan, U. Wiedner, I. Denysenko, Zhiqiang Liu, Y. F. Wang, B. J. Liu, T. Y. Xing, D. Y. Chen, L. M. Gu, M. N. Achasov, L. P. Zhou, H. B. Li, Zongyuan Wang, X. N. Ma, Shuai Liu, Cheng Li, Y. M. Ma, T. Hussain, X. Y. Ma, W. X. Gong, C. L. Luo, Q. Zhou, W. Kühn, A. Pathak, C. H. Li, Z. Y. You, Z. P. Mao, J. F. Sun, B. Wang, Guangyi Zhang, Z. A. Zhu, M. Fritsch, J. Fang, F. Weidner, B. Zhong, L. B. Guo, Lei Li, W. L. Yuan, A. Q. Guo, C. W. Wang, W. Imoehl, M. Kavatsyuk, Q. Ouyang, G. Wilkinson, S. Marcello, W. S. Cheng, Y. Zeng, Yao Zhang, A. N. Zhu, Y. F. Long, K. Ravindran, X. H. Liu, L. Q. Qin, Yi Zhang, K. Y. Liu, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Ch. Rosner, H. C. Shi, X. H. Bai, Zhe Sun, G. Li, Tao Zhang, S. S. Fang, C. Y. Guan, S. Lusso, W. M. Song, C. P. Shen, X. L. Wang, J. P. Dai, M. H. Ye, P. Kiese, Yuan Hou, R. A. Briere, B. X. Zhang, X. S. Jiang, S. Ahmed, Y. X. Yang, T. Z. Han, Yanping Huang, R. X. Yang, Wei Xu, Bibo Ke, Y. B. Liu, A. Pitka, P. Adlarson, Xu Shan, T. T. Han, W. B. Yan, Andrzej Kupsc, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, C. D. Fu, C. Q. Feng, X. R. Chen, Meng Wang, J. Libby, J. J. Song, L. Sun, Z. Y. Deng, Z. H. Qin, L. J. Wu, Q. Liu, S. Pacetti, Yaquan Fang, M. Greco, Shou-hua Zhu, Hai-Tian Wang, Z. Ning, S. Y. Xiao, Tao Luo, Muhammad Irshad, W. G. Li, A. G. Denig, E. M. Gersabeck, F. F. Sui, F. Feldbauer, Y. J. Mo, Y. K. Sun, M. Kuessner, M. L. Chen, X. L. Luo, L. Y. Dong, M. H. Gu, R. Kiuchi, M. X. Luo, Dylan Jaide White, D. V. Dedovich, J. Q. Zhang, S. J. Zhao, Z. J. Chen, N. Huesken, Y. H. Tan, L. L. Ma, L. Gong, F. A. Harris, Ke Li, M. Y. Dong, John Jake Lane, Guoqiang Yu, W. L. Chang, B. X. Yu, H. J. Lu, J. G. Lu, K. Begzsuren, F. X. Lu, Z. L. Huang, Feng Liu, M. Ablikim, X. Y. Jiang, X. L. Gao, Xujin Yuan, C. X. Yu, S. Spataro, X. L. Ji, S. L. Yang, L. G. Xia, W. P. Wang, F. Bianchi, A. Amoroso, R. Kliemt, Q. J. Xu, A. Mangoni, Q. Zhao, K. Schoenning, H. M. Liu, B. S. Zou, J. F. Hu, A. Guskov, X. K. Zhou, H. Leithoff, J. B. Zhao, Q. P. Ji, I. R. Boyko, Jie Yu, M. Albrecht, S. B. Liu, F. Li, A. Dbeyssi, A. Bortone, Xuanhong Lou, G. F. Cao, Y. H. Zheng, Y. Z. Sun, F. E. Maas, Jinfei Wu, F. C. Ma, T. Hu, J. H. Zou, B. Zheng, R. G. Ping, Tao Sun, Y. Nefedov, D. Y. Liu, S. H. Zhang, X. Y. Shen, Z. Y. Zhang, Shulei Zhang, Viktor Thorén, Angelo Rivetti, W. D. Li, T. J. Min, C. H. Heinz, Cong-Feng Qiao, K. J. Zhu, H. Liang, Nasser Kalantar-Nayestanaki, X D Shi, X. L. Li, G. Cibinetto, H. S. Chen, Alperen Yuncu, Y. J. Mao, S. S. Sun, L. Z. Liao, O. Bakina, Huanhuan Liu, C. Dong, I. K. Keshk, Z. A. Liu, G. Felici, S. Sosio, A. Calcaterra, Z. G. Zhao, M. Kuemmel, Matthew Glenn Kurth, N. Yu. Muchnoi, P. W. Luo, V. Prasad, G. A. Chelkov, H. L. Dai, H. X. Yang, I. Garzia, X. S. Kang, Xu Yan, X. F. Cui, R. S. Shi, C. X. Lin, Yu Bai, H. H. Zhang, Alexander Leon Gilman, Yao Wang, R. T. Ma, Y. H. Zhang, F. De Mori, Y. Ban, P. Weidenkaff, Zhang Li, P. X. Shen, S. L. Olsen, Xin Wu, Yue Pan, H. B. Liu, Z. Wu, M. Rump, Gang Zhao, G. S. Huang, I. Balossino, Huihui Liu, Y. G. Xie, R. E. Mitchell, S. P. Wen, T. Liu, J. F. Qiu, H. J. Li, Y. Fu, Z. Y. Wang, M. Lellmann, X. H. Li, S. Maldaner, X. S. Qin, X. R. Zhou, W. J. Zhu, Teresa Lenz, L. Wollenberg, Y. X. Zhao, Y. H. Xie, Y. Hu, Zujian Wang, Ke Wang, W. Y. Sun, X. D. Shi, Dan Wang, Xingchao Dai, X. Sun, Zhiqing Zhang, V. Rodin, Ke Liu, J. G. Messchendorp, X. F. Wang, B. Kopf, H. Y. Zhang, R. Farinelli, S. Gu, Q. M. Ma, I. Uman, L. Fava, Zhi Yang, Joachim Pettersson, R. Poling, K. L. He, F. H. Heinsius, T. Johansson, J. F. Chang, Y. C. Zhu, X. P. Xu, X. B. Ji, M. Maggiora, Ling Zhao, Xiangcheng Pan, R. B. de Boer, Zhenxiong Yuan, Y. Yuan, Ziyi Wang, S. W. Han, H. L. Ma, D. M. Li, O. B. Kolcu, B. L. Wang, H. R. Qi, X. Cai, L. Lavezzi, M. Z. Wang, H. Muramatsu, Y. B. Zhao, G. Y. Tang, W. Shan, X. H. Xie, H. Xiao, Yan Zhang, Lei Zhao, Jimin Zhao, T. Held, G. F. Chen, F. Nerling, M. Pelizaeus, Z. L. Hou, Xiao-Rui Lyu, Jie Zhao, Lingxuan Zhang, Y. X. Tan, P. Patteri, P. L. Li, J. L. Li, Alexey Zhemchugov, H. M. Hu, T. Holtmann, L. Koch, A. Khoukaz, J. Dong, F. H. Liu, Nicolas Berger, R. Baldini Ferroli, M. Rolo, J. Y. Liu, J. Y. Zhang, S. Nisar, Z. J. Xiao, C. F. Redmer, J. Q. Li, M. Qi, Krisztian Peters, S. Malde, H. J. Yang, J. W. Zhang, R. Aliberti, C. J. Tang, Y. P. Lu, F. Cossio, Ruiting Ma, Y. N. Gao, Z. Qian, J. Bloms, Haiping Peng, Y. Zhang, Feng Yan, C. Z. Yuan, N. Cao, X. L. Lu, M. M. Ma, T. Y. Qi, D. C. Shan, M. Bertani, M. Himmelreich, L. Yang, G. X. Sun, J. V. Bennett, Li Yan, J. Tang, H. B. Jiang, Jiawei Zhang, W. H. Wang, Y. K. Heng, Z. Jiao, T. Yu, W. Gradl, Yunlong Zhang, D. Bettoni, Y. X. Song, J. L. Zhang, Jianping Zheng, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, Wenbin Qian, S. X. Du, Y. G. Gao, M. Destefanis, Magnus Wolke, Y. F. Liang, X. Q. Hao, S. Nakhoul, S. Jaeger, P. Larin, L. D. Liu, J. J. Xu, C. X. Liu, Z. X. Meng, X. A. Xiong, A. A. Zafar, S. Qian, Q. An, Jialun Ping, X. Y. Zhang, K. H. Rashid, J. B. Liu, K. Goetzen, Y. J. Sun, Yifan Yang, Y. T. Liang, S. J. Chen, S. Y. Li, J. B. Jiao, L. H. Wu, R. Kappert, Yi Jin, Y. Schelhaas, G. F. Xu, Y. J. Xiao, S. Jin, Anita, S. Janchiv, C. Zhong, Q. Q. Song, Y. P. Guo, Serkant Ali Cetin, Jianyu Zhang, J. D. Lu, C. Schnier, Y. Q. Wang, Lei Zhang, X. T. Huang, G. Rong, X. H. Mo, L. L. Wang, H. Cai, L. Q. Huang, Jacek Biernat, I. B. Nikolaev, J. H. Yin, M. Shao, Y. T. Gu, C. X. Yue, M. Scodeggio, A. Sarantsev, D. H. Wei, P. R. Li, and J. S. Lange

Subjects
Physics, Particle physics, Annihilation, 010308 nuclear & particles physics, 0103 physical sciences, Pi, Resonance, State (functional analysis), 010306 general physics, Ground state, 01 natural sciences, Luminosity, Bar (unit)
Abstract

We study ηc production at center-of-mass energies s from 4.18 to 4.60 GeV in e+e- annihilation data collected with the BESIII detector operating at the BEPCII storage ring, corresponding to 7.3 fb-1 of integrated luminosity. We measure the cross sections of the three different exclusive reactions e+e-→ηcπ+π-π0, e+e-→ηcπ+π-, and e+e-→ηcπ0γ. We find significant ηc production in e+e-→ηcπ+π-π0 at s of 4.23 GeV and 4.26 GeV and observe a significant energy-dependent Born cross section that we measure to be consistent with the production via the intermediate Y(4260) resonance. In addition, we perform a search for a charmoniumlike Zc state close to the DD¯ threshold that decays to ηcπ, involving ground state charmonium, and observe no signal. Corresponding upper limits on the cross section of ηc and Zc production are provided, where the yields are not found to be significant.

Published
2021

38. Search for the reaction channel e+e−→ηcηπ+π− at center-of-mass energies from 4.23 to 4.60 GeV

Author

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

Subjects
Nuclear physics, Physics, Positron, Meson, law, Center of mass, Electron, Collider, Energy (signal processing), law.invention
Abstract

Using data collected with the BESIII detector operating at the Beijing Electron Positron Collider, we search for the process $e^+e^-\rightarrow \eta_c\eta \pi^+\pi^-$. The search is performed using five large data sets recorded at center-of-mass energies of 4.23, 4.26, 4.36, 4.42, and 4.60 GeV. The $\eta_c$ meson is reconstructed in 16 exclusive decay modes. No signal is observed in the $\eta_c$ mass region at any center-of-mass energy. The upper limits on the reaction cross sections are determined to be 6.2, 10.8, 27.6, 22.6 and 23.7 pb at the 90% confidence level at the center-of-mass energies listed above.

Published
2021

39. Measurement of cross sections for e+e−→μ+μ− at center-of-mass energies from 3.80 to 4.60 GeV

Author

Z. A. Liu, V. Prasad, Ma R. T., Y. Ban, P. Weidenkaff, Y. H. Zheng, Cong-Feng Qiao, G. Felici, S. P. Wen, X. S. Qin, X. R. Zhou, N. Yu. Muchnoi, Xu G. F., X. S. Kang, Y. H. Zhang, S. L. Olsen, Ma X. X., Mo X. H., Z. Y. Wang, Teresa Lenz, Meng Wang, L. Wollenberg, L. Y. Dong, A. G. Denig, Muhammad Irshad, Y. K. Sun, F. Feldbauer, Z. L. Huang, Xingchao Dai, M. Ablikim, A. Calcaterra, Z. G. Zhao, X. Y. Jiang, L. Z. Liao, Yu B. X., S. Spataro, Li H. B., Yu Bai, H. H. Zhang, F. A. Harris, W. L. Chang, M. Lellmann, Lingxuan Zhang, Y. X. Tan, H. Leithoff, Li J. Q., X. P. Qin, S. Maldaner, J. Q. Zhang, S. Qian, Q. An, Jialun Ping, Liangbin Li, X. Y. Zhang, X. L. Wang, J. B. Liu, C. L. Luo, Y. J. Sun, F. Li, G. Y. Tang, X. H. Xie, H. M. Liu, Q. Zhou, G. F. Cao, B. Zhong, L. B. Guo, Jie Zhao, A. N. Zhu, Tao Zhang, Ma F. C., Alexey Zhemchugov, F. F. Sui, C.-H. Rosner, E. M. Gersabeck, F. H. Liu, S. Ahmed, Y. X. Yang, T. Z. Han, Li P. R., G. Wilkinson, Y. Fu, Xu Q. J., J. W. Zhang, Xu Shan, H. H. Liu, Wu L. H., R. Kiuchi, Yao Wang, Ke B. C., X. L. Luo, Y. C. Zhu, W. S. Cheng, T. Liu, J. F. Qiu, Y. F. Wang, Wu L. J., M. Kuemmel, Matthew Glenn Kurth, H. Xiao, A. Q. Guo, C. W. Wang, M. Papenbrock, T. Held, Y. Schelhaas, Fu C. D., L. Fava, Zhi Yang, Z. Ning, S. Y. Xiao, Ma Y. M., Y. X. Zhao, M. X. Luo, Dylan Jaide White, H. B. Liu, B. Zheng, R. G. Ping, K. Begzsuren, G. Li, B. Kopf, M. H. Ye, F. Nerling, T. Hussain, R. S. Shi, W. P. Wang, D. V. Dedovich, Li Z. B., H. R. Qi, Q. Q. Song, F. Bianchi, Y. P. Guo, L. L. Wang, H. Cai, X. Q. Hao, Y. H. Xie, W. X. Gong, F. E. Maas, B. Wang, S. Nakhoul, T. Hu, C. Q. Feng, X. R. Chen, M. Maggiora, S. W. Han, S. Jaeger, Q. Zhao, X. F. Cui, Y. Z. Sun, Serkant Ali Cetin, Y. Ding, L. Q. Huang, Z. Y. Deng, Hai-Tian Wang, M. Fritsch, J. M. Zhang, Gu M. H., M. Kavatsyuk, Zujian Wang, Jacek Biernat, P. Larin, A. Pathak, H. C. Shi, Gu L. M., B. J. Liu, Ma X. N., Z. L. Hou, O. Bakina, T. Y. Xing, D. Y. Chen, Jimin Zhao, Z. H. Qin, X D Shi, I. K. Keshk, C. X. Lin, Ye M. H., D. Y. Liu, L. Y. Liu, W. Imoehl, X. K. Zhou, C. F. Redmer, J. B. Jiao, X. H. Liu, L. Q. Qin, B. X. Zhang, Xujin Yuan, C. H. Li, Ma Q. M., W. Kühn, I. B. Nikolaev, M. Rump, Gang Zhao, Z. Y. You, Z. A. Zhu, R. Kliemt, J. H. Yin, P. X. Shen, Lu H. J., M. Shao, Z. Wu, C. X. Yue, Gu Y. T., Y. J. Mao, H. X. Yang, I. Garzia, J. P. Dai, G. S. Huang, A. Mangoni, M. Qi, Ji Q. P., A. Guskov, S. B. Liu, H. J. Yang, Y. Nefedov, Qi T. Y., M. Himmelreich, Wu J. F., Y. F. Long, T. Holtmann, K. Ravindran, J. Y. Liu, W. J. Zhu, X. D. Shi, Dan Wang, S. Gu, C. Z. Yuan, N. Cao, F. Weidner, T. Yu, Xu J. J., Lu X. L., Ji X. L., Du S. X., C. P. Shen, X. Wu, T. J. Min, K. J. Zhu, G. Cibinetto, G. X. Sun, J. V. Bennett, Li Yan, J. G. Messchendorp, W. L. Yuan, Q. Ouyang, Z. Jiao, Wenbin Qian, S. L. Yang, A. Sarantsev, D. H. Wei, J. S. Lange, S. S. Fang, C. Y. Guan, K. Y. Liu, Li H. J., Ma X. Y., Y. G. Gao, W. Ikegami Andersson, P. W. Luo, Ma R. Q., Y. N. Gao, Qi H. R., Y. B. Zhao, Y. Zhang, Y. B. Liu, M. Bertani, L. Yang, W. Shan, J. B. Zhao, P. Kiese, Yuan Hou, J. Dong, Mo Y. J., Zhiqing Zhang, Q. P. Ji, M. Kuessner, I. R. Boyko, Li Z. Y., H. B. Jiang, S. Nisar, Ji X. B., R. A. Briere, C. J. Tang, Y. Hu, Y. P. Lu, Li X. L., X. S. Jiang, S. H. Zhang, X. Y. Shen, W. Gradl, Tao Sun, V. Rodin, G. A. Chelkov, Y. X. Song, Xu X. P., P. Patteri, Lu J. G., R. Farinelli, R. X. Yang, Wei Xu, J. F. Sun, A. Pitka, P. Adlarson, S. Marcello, Y. Zeng, M. Pelizaeus, Zhe Sun, S. Lusso, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, T. Johansson, J. F. Chang, O. B. Kolcu, X. Cai, L. Lavezzi, H. Y. Zhang, R. B. de Boer, Li L. K., G. F. Chen, J. Y. Zhang, H. W. Wen, Li J. L., Y. K. Heng, T. T. Han, S. J. Zhao, Li P. L., A. Bortone, Xuanhong Lou, Viktor Thorén, Nasser Kalantar-Nayestanaki, Yue Pan, I. Balossino, Hu H. M., Qu S. Q., Yu C. X., Li D. M., M. G. Zhao, Y. H. Yang, R. P. Guo, J. Zhu, M. Savrie, Yi Jin, Y. J. Xiao, Ma M. M., S. Janchiv, C. Zhong, C. Schnier, Y. Q. Wang, Li X. H., X. T. Huang, Ma H. L., G. Rong, Yu J. S., Z. X. Meng, X. A. Xiong, A. A. Zafar, K. H. Rashid, Y. T. Liang, S. J. Chen, K. J. Li, Andrzej Kupsc, M. L. Chen, Magnus Wolke, Y. F. Liang, Fang Liu, Li W. G., U. Wiedner, I. Denysenko, I. Uman, Guangyi Zhang, Z. J. Xiao, W. B. Yan, S. Pacetti, N. Huesken, M. Y. Dong, J. H. Zou, S. S. Sun, R. E. Mitchell, Q. Liu, Tristan Weber, L. Gong, L. G. Xia, A. Amoroso, A. Dbeyssi, Angelo Rivetti, F. De Mori, He K. L., L. D. Liu, Hu J. F., X. F. Wang, C. X. Liu, R. Kappert, S. Jin, Anita, Y. Yuan, K. Goetzen, Li S. Y., M. Albrecht, B. T. Tsednee, Ke Wang, W. Y. Sun, F. H. Heinsius, Lu J. D., B. L. Wang, Ma L. L., H. Liang, L. Koch, A. Khoukaz, R. Baldini Ferroli, Li W. D., Krisztian Peters, S. Malde, M. Z. Wang, Lu Y. P., Haiping Peng, Tao Luo, J. Libby, Shulei Zhang, H. S. Chen, Alperen Yuncu, H. L. Dai, Li C. H., Yaquan Fang, M. Greco, Shou-hua Zhu, John Jake Lane, Guoqiang Yu, K. Schoenning, B. S. Zou, Q. A. Malik, G. Mezzadri, W. C. Yan, Zhiqiang Liu, M. N. Achasov, L. Zhao, L. P. Zhou, Xiao-Rui Lyu, Z. P. Mao, J. Fang, J. Bloms, Z. Y. Zhang, Y. G. Xie, X. L. Gao, C. Dong, S. Sosio, Y. Yang, Joachim Pettersson, J. Tang, Yunlong Zhang, D. Bettoni, J. L. Zhang, Jianping Zheng, M. Destefanis, M. Rolo, and F. Cossio

Subjects
Nuclear physics, Physics, 010308 nuclear & particles physics, law, 0103 physical sciences, Detector, Measure (physics), Center of mass, 010306 general physics, Collider, 01 natural sciences, law.invention
Abstract

The observed cross sections for e(+)e(-) -> mu(+) mu(-) at energies from 3.8 to 4.6 GeVare measured using data samples taken with the BESIII detector operated at the BEPCII collider. We measure ...

Published
2020

40. Observation of the Doubly Cabibbo-Suppressed Decay D+→K+π+π−π0 and Evidence for D+→K+ω

Author

A. Calcaterra, Z. G. Zhao, L. Z. Liao, H. H. Zhang, H. B. Li, A. G. Denig, C. L. Luo, Q. Zhou, B. Zhong, L. B. Guo, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, W. Yuan, Tao Zhang, T. Z. Han, Yanping Huang, Xu Shan, M. Lellmann, S. Maldaner, Krisztian Peters, T. Holtmann, M. Qi, H. J. Yang, L. D. Liu, M. X. Luo, Dylan Jaide White, Yuyi Wang, D. V. Dedovich, L. Lavezzi, S. L. Yang, J. Q. Zhang, Xujin Yuan, Y. F. Long, K. Ravindran, M. Greco, M. Y. Dong, J. Y. Liu, I. B. Nikolaev, Xu Yan, R. T. Ma, H. B. Liu, J. Libby, Q. Liu, Y. Ding, X. Y. Jiang, M. M. Ma, Feng Yan, X. Sun, Yao Wang, Y. Fu, H. Y. Zhang, Y. H. Zheng, Muhammad Irshad, Cong-Feng Qiao, S. B. Liu, Y. Nefedov, L. Koch, A. Khoukaz, Xiangcheng Pan, C. W. Wang, G. Rong, B. J. Liu, Yi Zhang, J. H. Zou, T. Y. Xing, D. Y. Chen, N. Yu. Muchnoi, V. Prasad, S. Han, S. Ahmed, C. X. Liu, L. L. Ma, J. H. Yin, Lei Zhang, Yaquan Fang, M. Shao, Y. T. Gu, H. J. Lu, J. G. Lu, C. X. Yue, Haiwen Liu, A. Pitka, K. Y. Liu, R. Kappert, F. A. Harris, W. L. Chang, L. H. Wu, L. Gong, Y. X. Yang, W. Kühn, John Jake Lane, S. F. Zhang, Y. K. Heng, S. S. Sun, X. L. Gao, R. B. de Boer, C. Dong, S. Sosio, Y. C. Zhu, Huimin Wang, X. L. Ji, H. Leithoff, Z. Y. You, Z. A. Zhu, W. C. Yan, Guoqiang Yu, Magnus Wolke, R. P. Guo, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Y. Schelhaas, K. Schoenning, Y. Gao, B. S. Zou, Y. H. Zhang, X. L. Lu, Y. F. Liang, W. P. Wang, R. Baldini Ferroli, F. Li, C. Li, F. C. Ma, Joachim Pettersson, G. F. Chen, G. F. Xu, A. Amoroso, Niklaus Berger, F. Feldbauer, X. S. Qin, Yi Jin, X. Liu, F. E. Maas, T. Hu, Z. H. Qin, S. Malde, Y. Zhang, Anita, Feng Liu, S. Gu, P. Kiese, Q. Q. Song, M. Z. Wang, J. Y. Zhang, Q. Zhao, H. Qi, X D Shi, Z. Ning, J. F. Hu, Yuan Hou, G. X. Sun, J. V. Bennett, H. Xiao, Ziyuan Li, Zongyuan Wang, Lingxuan Zhang, Y. X. Tan, Z. Y. Wang, O. Bakina, M. Kuemmel, Matthew Glenn Kurth, S. Y. Xiao, Y. Z. Sun, Y. J. Mao, X. S. Kang, A. Sarantsev, D. H. Wei, J. S. Lange, M. Ablikim, J. L. Li, R. A. Briere, L. Xia, W. Shan, A. Yuncu, M. Rolo, R. E. Mitchell, T. Liu, H. X. Yang, Zhiyong Zhang, J. F. Qiu, D. C. Shan, Z. Jiao, Fu-Hu Liu, F. Weidner, W. Imoehl, C. P. Shen, Serkant Ali Cetin, A. Dbeyssi, Xiang Zhou, L. Fava, T. Held, Y. G. Xie, Y. J. Xiao, Zhi Yang, H. J. Li, L. J. Wu, X. F. Cui, X. S. Jiang, M. Fritsch, Haiping Peng, I. K. Keshk, Li Zhou, F. Cossio, Ruiting Ma, Q. Ouyang, X. Wu, P. X. Shen, W. M. Song, Y. B. Zhao, K. J. Zhu, Z. Qian, D. Y. Liu, C. X. Lin, S. Janchiv, S. X. Du, Ke Wang, Y. J. Mo, Z. Wu, J. B. Jiao, Jianhao Zhang, X. N. Ma, W. Y. Sun, J. L. Zhang, S. S. Fang, C. Y. Guan, M. Rump, Gang Zhao, F. F. Sui, M. H. Gu, J. Tang, Ke Liu, W. B. Yan, Q. A. Malik, R. Kiuchi, Huihui Liu, J. Dong, Evelina Gersabeck, Xiao-Rui Lyu, G. Mezzadri, C. Zhong, Yunlong Zhang, X. H. Mo, M. N. Achasov, B. Kopf, Z. J. Chen, Y. B. Liu, J. G. Messchendorp, W. J. Zhu, Jinfei Wu, B. C. Ke, M. H. Ye, D. Bettoni, X. D. Shi, R. X. Yang, J. P. Dai, C. X. Yu, Wei Xu, L. M. Gu, B. Wang, Y. G. Gao, W. H. Wang, P. Adlarson, P. R. Li, R. Farinelli, Zhiqing Zhang, B. L. Wang, J. F. Sun, Tao Luo, S. Marcello, Y. Zeng, Zhe Sun, S. Lusso, Stephen Lars Olsen, H. L. Ma, T. Lenz, Hao Liang, D. M. Li, X. L. Luo, Z. Y. Yuan, K. Begzsuren, M. Pelizaeus, Angelo Rivetti, C. H. Li, X. Wang, F. De Mori, M. Kavatsyuk, Jianyu Zhang, H. C. Shi, C. F. Redmer, J. D. Lu, C. Schnier, Y. Q. Wang, K. L. He, Q. P. Ji, Ziyi Wang, Jimin Zhao, P. L. Li, M. G. Zhao, Y. H. Yang, X. X. Ma, J. Zhu, X. F. Wang, S. Nisar, C. J. Tang, Y. Hu, Y. P. Lu, S. Pacetti, Z. A. Liu, N. Huesken, Y. M. Ma, Y. H. Tan, Z. P. Mao, J. Fang, W. G. Li, Y. K. Sun, Z. Huang, J. Q. Li, A. Q. Guo, S. Spataro, X. P. Xu, M. Himmelreich, B. Zheng, R. G. Ping, J. Bloms, Z. J. Xiao, L. L. Wang, H. Cai, L. Q. Huang, Jacek Biernat, R. Poling, Jianping Zheng, T. J. Min, I. Garzia, M. Destefanis, M. Albrecht, W. D. Li, Y. F. Wang, J. Zhao, X. H. Xie, F. Bianchi, S. Qian, Q. An, Jialun Ping, X. Y. Zhang, X. Y. Shen, B. X. Yu, Y. Ban, P. Weidenkaff, F. H. Heinsius, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, X. L. Wang, J. J. Song, J. B. Liu, S. P. Wen, Lei Li, L. Sun, X. R. Zhou, Ch. Rosner, Y. J. Sun, Yifan Yang, T. Hussain, Cheng Li, X. Y. Ma, Andrzej Kupsc, Meng Wang, X. T. Huang, T. T. Han, Ke Li, S. J. Zhao, M. L. Chen, Shan Jin, Zhiqing Liu, K. Goetzen, L. Y. Dong, G. F. Cao, W. X. Gong, Z. X. Meng, F. X. Lu, X. A. Xiong, A. Pathak, T. Johansson, J. F. Chang, Huanhuan Liu, X. H. Bai, S. Zhang, A. A. Zafar, Y. P. Guo, H. S. Chen, O. B. Kolcu, H. R. Qi, R. S. Shi, B. X. Zhang, G. Felici, X. Cai, F. Nerling, H. L. Dai, Igor Boyko, Q. J. Xu, K. H. Rashid, Fang Liu, Zujian Wang, I. Denysenko, Y. Bai, X. Q. Hao, A. Bortone, Xuanhong Lou, Yan Zhang, M. Bertani, Y. T. Liang, Viktor Thorén, X. H. Li, L. Wollenberg, S. J. Chen, Nasser Kalantar-Nayestanaki, Xingchao Dai, Q. M. Ma, Yue Pan, Shuai Liu, I. Balossino, L. Yang, J. J. Xu, Guangyi Zhang, Y. Yuan, H. B. Jiang, Jiawei Zhang, W. Gradl, Y. X. Song, D. Y. Wang, P. W. Luo, L. Q. Qin, T. Y. Qi, S. H. Zhu, T. Yu, X. K. Zhou, L. K. Li, Wenbin Qian, V. Rodin, X. B. Ji, G. Y. Tang, Jie Zhao, P. Patteri, Alexey Zhemchugov, H. M. Hu, R. Kliemt, A. Mangoni, A. Guskov, Jie Yu, I. Uman, S. Nakhoul, S. Jaeger, P. Larin, G. Cibinetto, Bingxuan Liu, G. Wilkinson, W. S. Cheng, Yao Zhang, G. Li, A. Gilman, C. D. Fu, C. Q. Feng, X. R. Chen, Z. Y. Deng, Xingguo Li, Si Li, Guangshun Huang, L. Yan, M. Kuessner, Tao Sun, G. A. Chelkov, Y. X. Zhao, Y. H. Xie, M. Maggiora, Ling Zhao, Lei Zhao, Z. L. Hou, C. Z. Yuan, and N. Cao

Subjects
Physics, 0103 physical sciences, Detector, Pi, General Physics and Astronomy, High Energy Physics::Experiment, Atomic physics, Nuclear Experiment, 010306 general physics, 01 natural sciences
Abstract

Using 2.93 fb(-1) of e(+)e(-) collision data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, the first observation of the doubly Cabibbo-suppressed decay D+-> K+pi(+) ...

Published
2020

41. Modeling and Evaluating the Impact of City Block Size on Traffic Performance

Author

Monica Menendez and Lingxuan Zhang

Subjects
City block, Computer science, Geography, Planning and Development, 0211 other engineering and technologies, 02 engineering and technology, 010501 environmental sciences, Development, 01 natural sciences, Urban Studies, Block (telecommunications), 021108 energy, Arithmetic, Block size, 0105 earth and related environmental sciences, Civil and Structural Engineering
Abstract

This paper investigates how block size influences traffic by dividing the travel distance, time, and number of turning maneuvers into two parts: the one that happens inside the block, and ...

Published
2020

42. Σ+ and Σ¯− Polarization in the J/ψ and ψ(3686) Decays

Author

L. M. Gu, P. Kiese, L. D. Liu, Yuan Hou, Z. X. Meng, R. A. Briere, J. F. Sun, G. S. Huang, X. S. Jiang, X. A. Xiong, A. A. Zafar, Y. B. Zhao, M. Albrecht, R. X. Yang, Wei Xu, S. Marcello, J. Dong, W. D. Li, P. Adlarson, K. H. Rashid, B. T. Tsednee, J. Q. Zhang, Y. F. Long, K. Ravindran, M. Greco, X. Pan, Yi Zhang, Y. T. Liang, I. B. Nikolaev, K. Y. Liu, R. P. Guo, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, R. Farinelli, Y. F. Wang, J. Zhao, I. Balossino, J. H. Yin, Lei Zhang, Qiang Zhao, S. Nisar, Y. Zeng, Zhe Sun, S. Lusso, C. J. Tang, Y. Hu, S. J. Chen, T. Hussain, X. Y. Ma, W. X. Gong, A. Pathak, Y. H. Xie, Fang Liu, Y. P. Lu, M. Shao, Y. T. Gu, I. Denysenko, Stephen Lars Olsen, H. L. Ma, T. Lenz, L. Yan, X. H. Xie, L. J. Wu, X. Wu, Y. Fu, H. B. Li, C. X. Liu, M. Maggiora, Ling Zhao, A. G. Denig, D. M. Li, Shuai Liu, Z. Y. Yuan, C. Zhong, Xu Yan, R. T. Ma, Andrzej Kupsc, Lei Zhao, Z. L. Hou, Y. B. Chen, M. L. Chen, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, Q. Liu, Jianyu Zhang, J. Libby, X. Wang, J. J. Xu, Guangyi Zhang, Tao Luo, C. W. Wang, Y. J. Mo, M. Pelizaeus, Huanhuan Liu, Y. C. Zhu, Xujin Yuan, L. Q. Qin, C. F. Redmer, J. D. Lu, C. Schnier, Y. Q. Wang, L. L. Ma, L. Gong, W. Imoehl, S. B. Liu, G. Felici, B. Kopf, K. L. He, Ziyi Wang, F. X. Lu, Y. P. Guo, H. J. Li, M. Y. Dong, L. G. Xia, A. Amoroso, X. L. Ji, C. L. Luo, Q. Zhou, A. Sarantsev, Y. Nefedov, D. H. Wei, B. X. Yu, H. B. Liu, J. S. Lange, X. T. Huang, S. F. Zhang, M. Z. Wang, Jimin Zhao, P. L. Li, R. S. Shi, T. Holtmann, G. Rong, Yaquan Fang, J. Y. Liu, A. Dbeyssi, T. Y. Qi, S. H. Zhu, M. Kuemmel, Matthew Glenn Kurth, M. H. Ye, W. Shan, R. Kappert, S. Qian, Q. An, Jialun Ping, J. H. Zou, Z. H. Qin, T. Yu, S. Han, T. Held, Bingxuan Liu, G. Wilkinson, C. Z. Yuan, B. Zhong, L. B. Guo, Meng Wang, Muhammad Irshad, Zujian Wang, M. Qi, X D Shi, Q. P. Ji, Z. J. Xiao, X. K. Zhou, Y. J. Mao, N. Cao, Zhiqing Liu, Y. Bai, M. G. Zhao, Y. H. Yang, H. J. Yang, X. Y. Zhang, S. S. Sun, W. S. Cheng, Yao Zhang, X. X. Ma, H. X. Yang, I. Garzia, L. H. Wu, G. F. Xu, X. L. Wang, Angelo Rivetti, Anita, S. Gu, X. F. Wang, G. Li, X. F. Cui, Wenbin Qian, H. S. Chen, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, W. Yuan, X. S. Qin, M. Savrie, Dong E. Liu, J. B. Liu, I. Uman, Yi Jin, X. H. Li, L. Wollenberg, F. De Mori, X. Y. Shen, Tao Zhang, A. Pitka, Huihui Liu, S. Nakhoul, L. Y. Dong, A. Gilman, T. Johansson, J. F. Chang, T. T. Han, X. Y. Jiang, S. Jaeger, Y. J. Sun, Yifan Yang, Xingchao Dai, H. L. Dai, Igor Boyko, John Jake Lane, Y. Ding, Yao Wang, P. Larin, J. G. Messchendorp, Y. J. Xiao, C. H. Li, Y. X. Song, M. M. Ma, R. E. Mitchell, X. L. Lu, S. J. Zhao, J. P. Dai, S. Janchiv, C. D. Fu, Guoqiang Yu, B. J. Liu, M. Kuessner, Zongyuan Wang, C. Q. Feng, Magnus Wolke, X. R. Chen, L. Koch, A. Khoukaz, Y. F. Liang, G. Y. Tang, O. B. Kolcu, J. B. Jiao, Bibo Ke, F. A. Harris, W. G. Li, T. Y. Xing, D. Y. Chen, K. Schoenning, Y. Gao, Jie Zhao, Alexey Zhemchugov, H. M. Hu, Y. K. Sun, Shan Jin, Evelina Gersabeck, W. B. Yan, Z. Huang, D. C. Shan, Z. Y. Deng, Q. M. Ma, B. S. Zou, W. L. Chang, Q. J. Xu, X. S. Kang, Y. Zhang, R. Baldini Ferroli, K. Goetzen, X. Cai, S. Ahmed, Y. X. Yang, M. N. Achasov, F. Nerling, S. Spataro, M. Bertani, X. P. Xu, Hai-Tian Wang, Tao Sun, W. Kühn, L. Yang, F. Weidner, A. Bortone, Xuanhong Lou, G. X. Sun, J. V. Bennett, H. Xiao, Ziyuan Li, J. W. Zhang, W. J. Zhu, C. Li, G. A. Chelkov, Q. Ouyang, Viktor Thorén, L. Lavezzi, S. Pacetti, Niklaus Berger, Q. A. Malik, Y. Yuan, Nasser Kalantar-Nayestanaki, S. Malde, Lei Li, Z. Jiao, Fu-Hu Liu, Z. Y. You, Y. H. Zheng, Z. A. Zhu, W. C. Yan, Cong-Feng Qiao, X. D. Shi, H. M. Liu, S. S. Fang, C. Y. Guan, X. N. Ma, H. B. Jiang, N. Huesken, H. Leithoff, G. Mezzadri, F. Li, Xingguo Li, X. Q. Hao, Jiawei Zhang, Yue Pan, Y. H. Tan, Y. B. Liu, N. Yu. Muchnoi, F. C. Ma, Ke Li, G. F. Cao, Yan Zhang, H. Y. Zhang, Krisztian Peters, Haiping Peng, S. Zhang, Y. H. Zhang, Y. Z. Sun, W. Gradl, R. B. de Boer, Shiqun Li, C. P. Shen, Z. Ning, S. Y. Xiao, X. L. Luo, D. Y. Wang, Ke Wang, W. Y. Sun, G. F. Chen, S. L. Yang, R. Kliemt, H.R. Qi, Xiang Zhou, I. K. Keshk, J. Y. Zhang, L. P. Zhou, P. R. Li, K. Begzsuren, X. H. Mo, Z. Y. Wang, C. X. Lin, W. P. Wang, F. Bianchi, Y. G. Xie, T. Liu, J. F. Qiu, M. Rump, Gang Zhao, Y. M. Ma, A. Mangoni, B. Q. Wang, M. Kavatsyuk, L. Fava, Zhi Yang, A. Guskov, Y. K. Heng, Jie Yu, Z. P. Mao, B. L. Wang, L. L. Wang, H. Cai, D. Y. Liu, H. C. Shi, L. Q. Huang, Jacek Biernat, Y. X. Zhao Zhao, Jinfei Wu, T. Z. Han, K. J. Zhu, W. M. Song, J. Fang, G. Cibinetto, Xu Shan, P. W. Luo, S. X. Du, B. X. Zhang, Ch. Rosner, Chong-Xing Yue, L. K. Li, M. X. Luo, Dylan Jaide White, V. Rodin, Yuyi Wang, D. V. Dedovich, Xiao-Rui Lyu, X. B. Ji, P. Patteri, H. Liang, F. Feldbauer, Y. G. Gao, W. H. Wang, J. Zhu, J. Q. Li, A. Q. Guo, Feng Liu, M. Ablikim, M. Himmelreich, M. Fritsch, J. Bloms, A. Calcaterra, Z. G. Zhao, L. Z. Liao, H. H. Zhang, M. Lellmann, S. Maldaner, Ke Liu, J. F. Hu, Lingxuan Zhang, Y. X. Tan, Zhiyong Zhang, X. P. Qin, J. L. Zhang, F. F. Sui, M. H. Gu, R. Kiuchi, C. X. Yu, B. Zheng, R. G. Ping, Z. A. Liu, V. Prasad, Y. Ban, P. Weidenkaff, F. H. Heinsius, S. P. Wen, X. R. Zhou, Cheng Li, H. J. Lu, J. G. Lu, F. E. Maas, T. Hu, O. Bakina, P. X. Shen, Z. Wu, Zhiqing Zhang, Y. Schelhaas, X. Liu, H. R. Qi, Q. Q. Song, Serkant Ali Cetin, J. Tang, Yunlong Zhang, D. Bettoni, R. Poling, Jianping Zheng, T. J. Min, M. Destefanis, X. L. Gao, C. Dong, S. Sosio, Joachim Pettersson, J. L. Li, A. Yuncu, M. Rolo, F. Cossio, Ruiting Ma, and Z. Qian

Subjects
Physics, Spin polarization, 0103 physical sciences, General Physics and Astronomy, Sigma, High Energy Physics::Experiment, Atomic physics, 010306 general physics, Polarization (waves), 01 natural sciences
Abstract

From 1310.6 x 10(6) J/psi and 448.1 x 10(6) psi (3686) events collected with the BESIII experiment, we report the first observation of Sigma(+) and (Sigma) over bar (-) spin polarization in e(+)e(- ...

Published
2020

43. Cooperative Shear in Bulk Metallic Glass Composites Containing Metastable β -Ti Dendrites

Author

R. L. Narayan, Tongxing Yan, Baoan Sun, Hai‐Shan Zhang, Upadrasta Ramamurty, Lingxuan Zhang, Jürgen Eckert, and School of Mechanical and Aerospace Engineering

Subjects
Amorphous metal, Materials science, General Physics and Astronomy, 01 natural sciences, Omega, Condensed Matter::Soft Condensed Matter, Fracture, Deformation mechanism, Shear (geology), Physics [Science], Metastability, 0103 physical sciences, Ultimate tensile strength, Glassy matrix, Composite material, 010306 general physics, Shear band, Ductility
Abstract

We report a novel plastic deformation mechanism of bulk metallic glass composites (BMGCs) containing metastable $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{Ti}$ dendrites. Plastic deformation of the BMGCs beyond the ultimate tensile strength is mediated by cooperative shear events, which comprise a shear band in the glassy matrix and a continuous $\ensuremath{\omega}\text{\ensuremath{-}}\mathrm{Ti}$ band with a thickness of $\ensuremath{\sim}10\text{ }\text{ }\mathrm{nm}$ in the $\ensuremath{\beta}\text{\ensuremath{-}}\mathrm{Ti}$ dendrite. The cooperative shear leads to serrated shear avalanches. The formation of narrow $\ensuremath{\omega}\text{\ensuremath{-}}\mathrm{Ti}$ bands is caused by high local strain rates during the cooperative shear. The cooperative shear mechanism enriches the deformation mechanisms of BMGCs and also deepens the understanding of $\ensuremath{\omega}\text{\ensuremath{-}}\mathrm{Ti}$ formation.

Published
2020

44. Measurements of Absolute Branching Fractions of Fourteen Exclusive Hadronic D Decays to η

Author

H. B. Li, A. G. Denig, C. L. Luo, Fang Liu, I. Denysenko, Q. Zhou, X. N. Ma, Zongyuan Wang, Shuai Liu, J. J. Xu, Guangyi Zhang, S. Qian, Q. An, Jialun Ping, B. Zhong, L. B. Guo, X. L. Ji, X. Y. Zhang, B. Wang, H. J. Lu, J. G. Lu, F. Weidner, X. L. Wang, Q. Ouyang, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, J. B. Liu, W. Yuan, Tao Zhang, T. Z. Han, Yanping Huang, Xu Shan, Muhammad Irshad, Y. J. Sun, Yifan Yang, F. E. Maas, T. Hu, Q. Liu, S. S. Fang, C. Y. Guan, X. S. Kang, M. H. Ye, Y. P. Lu, T. Holtmann, M. G. Zhao, Y. H. Yang, X. X. Ma, J. Zhu, Y. B. Liu, X. F. Wang, G. Y. Tang, M. Kavatsyuk, H. C. Shi, O. Bakina, A. Calcaterra, Z. G. Zhao, L. Z. Liao, Y. G. Xie, L. Y. Dong, H. H. Zhang, M. Lellmann, S. Maldaner, R. Kappert, L. L. Ma, L. Gong, Li Zhou, Y. Schelhaas, Bingxuan Liu, G. Wilkinson, Y. Fu, M. Kuemmel, Matthew Glenn Kurth, W. Shan, J. Y. Liu, M. X. Luo, Dylan Jaide White, Yuyi Wang, D. V. Dedovich, A. Amoroso, W. B. Yan, W. M. Song, L. J. Wu, X. Wu, F. A. Harris, G. F. Xu, Anita, S. Gu, M. N. Achasov, B. X. Zhang, Jie Zhao, H. Y. Zhang, W. S. Cheng, S. X. Du, Yao Zhang, G. Li, A. Dbeyssi, Y. H. Zheng, Cong-Feng Qiao, Haiwen Liu, S. Pacetti, F. Nerling, W. L. Chang, P. X. Shen, Alexey Zhemchugov, H. M. Hu, Z. Wu, X. F. Cui, Y. J. Mo, X. Liu, N. Huesken, R. B. de Boer, Shiqun Li, Q. Q. Song, A. Gilman, Xiao-Rui Lyu, Xujin Yuan, C. D. Fu, N. Yu. Muchnoi, H. Leithoff, G. F. Chen, I. B. Nikolaev, Y. H. Tan, Ke Li, J. H. Yin, Lei Zhang, Zhiqing Liu, L. D. Liu, M. Y. Dong, B. Kopf, Angelo Rivetti, C. H. Li, Y. C. Zhu, Zhiqing Zhang, X. L. Luo, P. Kiese, K. L. He, C. Q. Feng, X. R. Chen, M. Shao, Y. T. Gu, Magnus Wolke, Yuan Hou, S. B. Liu, Feng Yan, Y. F. Liang, Y. H. Zhang, Y. G. Gao, W. H. Wang, C. X. Yue, J. Y. Zhang, X. Y. Jiang, J. Q. Li, A. Q. Guo, H. B. Liu, F. Li, J. H. Zou, Evelina Gersabeck, F. C. Ma, Ziyi Wang, Yao Wang, Serkant Ali Cetin, Y. Nefedov, S. S. Sun, Z. Y. Deng, K. Begzsuren, M. Z. Wang, M. M. Ma, C. X. Liu, R. A. Briere, M. Himmelreich, T. Johansson, J. F. Chang, F. Bianchi, X. Wang, W. J. Zhu, Xiangcheng Pan, F. De Mori, Jimin Zhao, T. Y. Qi, P. L. Li, X. S. Qin, J. Bloms, A. Sarantsev, D. H. Wei, J. S. Lange, Xingguo Li, Z. Y. Wang, Q. P. Ji, X. D. Shi, T. Held, Shan Jin, K. Goetzen, Meng Wang, R. E. Mitchell, T. Liu, R. Farinelli, X. S. Jiang, Andrzej Kupsc, J. F. Qiu, Y. K. Heng, X. Y. Shen, T. T. Han, D. Y. Liu, J. B. Jiao, S. J. Zhao, R. Kliemt, Krisztian Peters, Stephen Lars Olsen, H. L. Ma, M. Qi, H. J. Yang, T. Lenz, D. M. Li, S. Zhang, L. Fava, W. Imoehl, Zhi Yang, O. B. Kolcu, Y. Zhang, X. H. Mo, L. Q. Qin, J. L. Li, M. L. Chen, Y. Ding, Guangshun Huang, V. Prasad, A. Mangoni, A. Guskov, A. Yuncu, Jie Yu, S. Han, G. X. Sun, J. V. Bennett, S. L. Yang, H. Xiao, Ziyuan Li, Huanhuan Liu, M. Rolo, H. R. Qi, X. Cai, Z. Y. Yuan, F. X. Lu, G. Felici, B. J. Liu, Q. J. Xu, H. J. Li, T. Y. Xing, D. Y. Chen, A. Bortone, Z. Jiao, Fu-Hu Liu, L. Lavezzi, M. Albrecht, J. F. Hu, Lingxuan Zhang, Y. X. Tan, L. L. Wang, H. Cai, Q. M. Ma, F. Feldbauer, M. Pelizaeus, L. Q. Huang, Feng Liu, S. Ahmed, Y. X. Yang, Jacek Biernat, L. H. Wu, Y. B. Zhao, W. Kühn, R. X. Yang, M. Kuessner, W. D. Li, Zhiyong Zhang, B. C. Ke, S. H. Zhu, Xuanhong Lou, Viktor Thorén, Wei Xu, K. J. Zhu, Nasser Kalantar-Nayestanaki, Y. Yuan, Z. J. Xiao, X. P. Qin, M. Ablikim, X. Q. Hao, Huimin Wang, G. Cibinetto, P. Adlarson, X. L. Lu, B. T. Tsednee, Z. Y. You, Z. A. Zhu, W. C. Yan, T. Yu, J. Dong, Yi Jin, Yan Zhang, X. H. Li, P. W. Luo, X. K. Zhou, L. Wollenberg, Q. Zhao, Y. Z. Sun, L. Xia, J. L. Zhang, J. F. Sun, Z. Ning, S. Y. Xiao, S. Nisar, C. J. Tang, Yue Pan, F. F. Sui, M. H. Gu, Xingchao Dai, S. Marcello, Y. J. Xiao, I. Balossino, Y. Hu, S. Janchiv, Xiang Zhou, I. K. Keshk, R. Kiuchi, F. Cossio, Ruiting Ma, Y. P. Guo, C. X. Lin, Z. Qian, Y. Zeng, C. P. Shen, Zhe Sun, D. C. Shan, M. Rump, Gang Zhao, S. Lusso, X. H. Xie, Wenbin Qian, M. Bertani, C. Zhong, Y. F. Wang, Z. A. Liu, J. Zhao, L. Yan, C. X. Yu, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Tao Sun, L. K. Li, G. A. Chelkov, L. Yang, J. J. Song, L. Sun, V. Rodin, Jianyu Zhang, I. Uman, X. L. Gao, Jinfei Wu, H. B. Jiang, Jiawei Zhang, C. F. Redmer, J. D. Lu, B. Zheng, R. G. Ping, C. Schnier, Y. Q. Wang, X. B. Ji, S. Nakhoul, X. T. Huang, S. Jaeger, T. Hussain, R. S. Shi, Z. X. Meng, C. Dong, S. Sosio, Y. X. Zhao, Y. H. Xie, P. Patteri, W. Gradl, X. A. Xiong, Y. Ban, P. Weidenkaff, F. H. Heinsius, Xu Yan, X. Y. Ma, R. T. Ma, P. Larin, Y. X. Song, D. Y. Wang, Joachim Pettersson, S. P. Wen, X. H. Bai, A. A. Zafar, W. X. Gong, K. H. Rashid, Zujian Wang, Y. Bai, X. R. Zhou, M. Maggiora, Ling Zhao, Lei Zhao, Cheng Li, Z. L. Hou, S. F. Zhang, J. Tang, Yunlong Zhang, Y. T. Liang, A. Pathak, S. J. Chen, D. Bettoni, R. Poling, Jianping Zheng, C. Z. Yuan, N. Cao, T. J. Min, K. Y. Liu, I. Garzia, M. Destefanis, J. Q. Zhang, Y. F. Long, K. Ravindran, M. Greco, X D Shi, Y. J. Mao, H. X. Yang, Q. A. Malik, G. Mezzadri, Yi Zhang, Huihui Liu, R. P. Guo, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, J. G. Messchendorp, L. M. Gu, J. P. Dai, P. R. Li, Y. M. Ma, Z. P. Mao, W. G. Li, Y. K. Sun, Z. Huang, S. Spataro, J. Fang, X. P. Xu, Tao Luo, Lei Li, Ch. Rosner, B. X. Yu, H. S. Chen, H. L. Dai, Igor Boyko, L. Koch, A. Khoukaz, G. F. Cao, R. Baldini Ferroli, C. Li, C. W. Wang, G. Rong, S. Malde, H. Liang, Haiping Peng, Ke Wang, W. Y. Sun, W. P. Wang, Z. H. Qin, H. Qi, B. L. Wang, M. Fritsch, Jianhao Zhang, Ke Liu, J. Libby, Yaquan Fang, A. Pitka, John Jake Lane, Guoqiang Yu, K. Schoenning, B. S. Zou, and Niklaus Berger

Subjects
Nuclear physics, Physics, 0103 physical sciences, Detector, Hadron, General Physics and Astronomy, 010306 general physics, Branching (polymer chemistry), 01 natural sciences
Abstract

Using 2.93 fb(-1) of e(+)e(-) collision data taken at a center-of-mass energy of 3.773 GeV with the BESIII detector, we report the first measurements of the absolute branching fractions of 14 hadro ...

Published
2020

45. First Observation of D+→ημ+νμ and Measurement of Its Decay Dynamics

Author

A. Khoukaz, Y. B. Zhao, R. Baldini Ferroli, L. Q. Qin, C. Li, S. Malde, M. Z. Wang, J. Dong, C. Zhong, Krisztian Peters, T. Holtmann, S. Nisar, Shan Jin, K. Goetzen, C. J. Tang, J. Y. Liu, H. J. Lu, Jianyu Zhang, S. L. Yang, H. B. Li, A. G. Denig, C. L. Luo, Q. Zhou, Y. Hu, Y. P. Lu, Haiping Peng, M. H. Ye, S. H. Zhu, T. Yu, Z. A. Liu, L. Y. Dong, X. K. Zhou, C. F. Redmer, J. G. Lu, F. Nerling, Huanhuan Liu, J. D. Lu, C. Schnier, Y. Q. Wang, B. Zhong, L. B. Guo, B. Kopf, S. Zhang, F. E. Maas, X. T. Huang, X D Shi, T. Hu, X. Wang, F. De Mori, G. Felici, Feng Yan, K. L. He, Ziyi Wang, W. B. Yan, I. B. Nikolaev, Wenbin Qian, J. H. Yin, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, W. Yuan, Tao Zhang, Lei Zhang, O. Bakina, Y. G. Gao, M. N. Achasov, M. Albrecht, M. Shao, Y. T. Gu, Z. X. Meng, X. A. Xiong, X. H. Bai, A. A. Zafar, S. Pacetti, W. D. Li, S. Ahmed, Y. X. Yang, R. Kappert, Jimin Zhao, T. Y. Qi, P. L. Li, H. Liang, P. X. Shen, Z. Wu, Y. J. Mao, H. X. Yang, B. T. Tsednee, Meng Wang, T. T. Han, S. J. Zhao, J. F. Sun, Muhammad Irshad, R. X. Yang, T. Z. Han, Yanping Huang, Xu Shan, N. Huesken, A. Sarantsev, R. S. Shi, D. H. Wei, J. S. Lange, Zhiqing Zhang, K. H. Rashid, X. N. Ma, Huimin Wang, Ke Wang, W. Y. Sun, S. Marcello, Y. Zeng, Zhe Sun, S. Lusso, G. F. Xu, M. Qi, H. J. Yang, M. Fritsch, Anita, S. Gu, C. X. Yue, Q. J. Xu, G. Y. Tang, J. Q. Zhang, Y. H. Tan, Ke Li, B. Wang, Zujian Wang, A. Calcaterra, Z. G. Zhao, Y. T. Liang, S. J. Chen, L. Z. Liao, X. H. Mo, Q. Zhao, A. Bortone, M. Y. Dong, Y. Bai, X. H. Xie, Xujin Yuan, L. L. Wang, H. Cai, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, Xuanhong Lou, L. Q. Huang, Viktor Thorén, Jacek Biernat, Huihui Liu, Jie Zhao, Jianhao Zhang, Nasser Kalantar-Nayestanaki, H. B. Liu, V. Prasad, S. Han, H. H. Zhang, L. H. Wu, Y. Fu, Q. M. Ma, Y. Z. Sun, J. G. Messchendorp, M. Lellmann, S. Maldaner, J. L. Li, A. Yuncu, M. Rolo, J. J. Song, L. Sun, F. A. Harris, Hongrong Qi, J. H. Zou, J. P. Dai, Ke Liu, L. D. Liu, W. Imoehl, S. S. Sun, Yue Pan, I. Balossino, S. B. Liu, Y. Nefedov, Y. Yuan, X. L. Lu, Alexey Zhemchugov, H. M. Hu, W. L. Chang, H. Leithoff, J. Libby, X. H. Li, L. Wollenberg, Xingchao Dai, Yaquan Fang, X. S. Qin, Z. Ning, S. Y. Xiao, X. Y. Jiang, Guangshun Huang, Xiang Zhou, I. K. Keshk, Magnus Wolke, M. M. Ma, M. Kuemmel, Matthew Glenn Kurth, M. Kavatsyuk, H. C. Shi, Yi Jin, B. X. Zhang, L. Xia, Y. J. Xiao, Q. Liu, S. Janchiv, M. Kuessner, C. W. Wang, G. Rong, C. X. Lin, M. Rump, Gang Zhao, A. Pitka, W. Shan, Y. F. Liang, M. G. Zhao, Y. H. Yang, X. X. Ma, F. Li, Y. F. Long, K. Ravindran, M. Greco, R. E. Mitchell, B. L. Wang, X. F. Cui, J. Zhu, X. F. Wang, L. L. Ma, I. Uman, Y. C. Zhu, D. C. Shan, Zongyuan Wang, F. C. Ma, John Jake Lane, Fang Liu, Guoqiang Yu, L. Gong, M. Bertani, I. Denysenko, A. Amoroso, S. Nakhoul, Y. Zhang, G. X. Sun, J. V. Bennett, H. Xiao, S. Jaeger, L. Yang, R. Farinelli, H. Y. Zhang, Haiwen Liu, Tao Sun, R. B. de Boer, Shiqun Li, F. Cossio, Ruiting Ma, Y. P. Guo, K. J. Zhu, Z. Qian, C. X. Liu, Evelina Gersabeck, W. P. Wang, Ziyuan Li, K. Schoenning, B. S. Zou, Z. H. Qin, L. Yan, Yao Wang, G. A. Chelkov, P. Larin, Z. Jiao, Fu-Hu Liu, H. Qi, M. X. Luo, Dylan Jaide White, Xiao-Rui Lyu, Yuyi Wang, G. F. Chen, D. V. Dedovich, Shuai Liu, F. Weidner, W. J. Zhu, X. D. Shi, H. B. Jiang, W. G. Li, Niklaus Berger, J. J. Xu, Guangyi Zhang, T. Held, Yi Zhang, Stephen Lars Olsen, H. L. Ma, T. Lenz, Q. A. Malik, G. Mezzadri, Y. K. Sun, T. Liu, A. Dbeyssi, J. Y. Zhang, Y. X. Zhao, J. F. Qiu, Z. Huang, H. J. Li, Jiawei Zhang, Y. H. Xie, D. M. Li, X. L. Gao, Q. P. Ji, S. Spataro, Tao Luo, X. P. Xu, Q. Ouyang, L. Fava, Zhi Yang, Angelo Rivetti, W. Gradl, Y. H. Zheng, M. Maggiora, K. Y. Liu, Z. Y. Yuan, L. M. Gu, P. R. Li, Ling Zhao, Lei Li, Y. X. Song, Jinfei Wu, S. S. Fang, C. Y. Guan, B. C. Ke, C. H. Li, D. Y. Wang, Lei Zhao, C. Dong, S. Sosio, M. Pelizaeus, Y. M. Ma, B. X. Yu, Z. P. Mao, Z. L. Hou, Y. B. Liu, R. P. Guo, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, Z. J. Xiao, G. F. Cao, F. Feldbauer, J. Fang, W. H. Wang, Feng Liu, Joachim Pettersson, Y. F. Wang, M. Ablikim, X. L. Luo, J. Zhao, J. Q. Li, A. Q. Guo, C. Z. Yuan, N. Cao, Ch. Rosner, H. S. Chen, Cong-Feng Qiao, J. Tang, K. Begzsuren, T. Hussain, M. Himmelreich, F. Bianchi, N. Yu. Muchnoi, H. L. Dai, Igor Boyko, Xu Yan, R. T. Ma, J. Bloms, X. Y. Ma, Y. H. Zhang, Andrzej Kupsc, W. X. Gong, Yunlong Zhang, D. Bettoni, M. L. Chen, D. Y. Liu, A. Pathak, X. L. Ji, Z. Y. Wang, R. Poling, Jianping Zheng, F. X. Lu, T. J. Min, I. Garzia, S. F. Zhang, X. S. Kang, M. Destefanis, P. Kiese, Yuan Hou, Y. G. Xie, R. A. Briere, Li Zhou, W. M. Song, X. S. Jiang, S. X. Du, Zhiqing Liu, T. Johansson, J. F. Chang, Wei Xu, P. Adlarson, O. B. Kolcu, X. Cai, L. Lavezzi, X. Q. Hao, R. Kliemt, Yan Zhang, A. Mangoni, A. Guskov, Jie Yu, G. Cibinetto, P. W. Luo, L. K. Li, V. Rodin, X. B. Ji, P. Patteri, Bingxuan Liu, G. Wilkinson, W. S. Cheng, Yao Zhang, G. Li, A. Gilman, C. D. Fu, C. Q. Feng, X. R. Chen, Z. Y. Deng, Xingguo Li, Y. Ding, B. J. Liu, T. Y. Xing, D. Y. Chen, W. Kühn, Z. Y. You, Z. A. Zhu, W. C. Yan, C. P. Shen, L. J. Wu, X. Wu, Y. J. Mo, X. Y. Shen, Xiangcheng Pan, Y. K. Heng, J. F. Hu, Lingxuan Zhang, Y. X. Tan, Zhiyong Zhang, X. P. Qin, J. L. Zhang, F. F. Sui, M. H. Gu, R. Kiuchi, C. X. Yu, B. Zheng, R. G. Ping, Y. Ban, P. Weidenkaff, F. H. Heinsius, S. P. Wen, X. R. Zhou, Cheng Li, J. B. Jiao, Y. Schelhaas, X. Liu, Q. Q. Song, Serkant Ali Cetin, S. Qian, Q. An, Jialun Ping, X. Y. Zhang, X. L. Wang, J. B. Liu, Y. J. Sun, Yifan Yang, and L. Koch

Subjects
Physics, Crystallography, Branching fraction, 0103 physical sciences, Hadron, General Physics and Astronomy, Matrix element, 010306 general physics, 01 natural sciences, Lepton
Abstract

By analyzing a data sample corresponding to an integrated luminosity of 2.93 fb^{-1} collected at a center-of-mass energy of 3.773 GeV with the BESIII detector, we measure for the first time the absolute branching fraction of the D^{+}→ημ^{+}ν_{μ} decay to be B_{D^{+}→ημ^{+}ν_{μ}}=(10.4±1.0_{stat}±0.5_{syst})×10^{-4}. Using the world averaged value of B_{D^{+}→ηe^{+}ν_{e}}, the ratio of the two branching fractions is determined to be B_{D^{+}→ημ^{+}ν_{μ}}/B_{D^{+}→ηe^{+}ν_{e}}=0.91±0.13_{(stat+syst)}, which agrees with the theoretical expectation of lepton flavor universality within uncertainty. By studying the differential decay rates in five four-momentum transfer intervals, we obtain the product of the hadronic form factor f_{+}^{η}(0) and the c→d Cabibbo-Kobayashi-Maskawa matrix element |V_{cd}| to be f_{+}^{η}(0)|V_{cd}|=0.087±0.008_{stat}±0.002_{syst}. Taking the input of |V_{cd}| from the global fit in the standard model, we determine f_{+}^{η}(0)=0.39±0.04_{stat}±0.01_{syst}. On the other hand, using the value of f_{+}^{η}(0) calculated in theory, we find |V_{cd}|=0.242±0.022_{stat}±0.006_{syst}±0.033_{theory}.

Published
2020

46. 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

47. First measurements of χcJ→Σ−Σ¯+(J=0,1,2) decays

Author

X. Wu, J. Tang, Bibo Ke, G. Wilkinson, Y. J. Mo, W. S. Cheng, Yao Zhang, G. Li, W. B. Yan, M. M. Ma, L. H. Wu, S. Pacetti, C. D. Fu, M. Savrie, Yunlong Zhang, C. Q. Feng, Zongyuan Wang, X. R. Chen, N. Huesken, Q. Liu, D. Bettoni, Tristan Weber, Yi Jin, Z. Y. Deng, Y. H. Tan, X D Shi, G. X. Sun, J. V. Bennett, Li Yan, J. L. Zhang, F. Li, F. C. Ma, Y. J. Xiao, Hai-Tian Wang, F. Weidner, Ke Li, Jianping Zheng, L. L. Ma, L. Gong, W. L. Yuan, Q. Ouyang, Xingguo Li, Xiao-Rui Lyu, S. Janchiv, J. Q. Li, Q. P. Ji, M. Kuessner, J. Bloms, Y. J. Mao, P. Kiese, Yuan Hou, I. R. Boyko, Z. Jiao, Z. A. Liu, S. S. Fang, C. Y. Guan, H. X. Yang, L. G. Xia, A. Amoroso, R. A. Briere, X. L. Ji, Y. B. Liu, V. Prasad, M. H. Ye, S. H. Zhang, X. Y. Shen, S. X. Du, Z. X. Meng, K. Y. Liu, X. A. Xiong, Y. Ban, Z. Y. Zhang, G. S. Huang, E. M. Gersabeck, I. Garzia, M. G. Zhao, Y. H. Yang, X. X. Ma, R. P. Guo, J. Zhu, X. S. Jiang, A. Dbeyssi, P. Weidenkaff, M. Y. Dong, Y. G. Xie, A. A. Zafar, X. L. Luo, M. Destefanis, T. Liu, J. F. Qiu, Tao Sun, Angelo Rivetti, S. P. Wen, Y. B. Zhao, W. Shan, Y. Ding, X. S. Qin, X. R. Zhou, R. X. Yang, J. H. Zou, J. Dong, S. Qian, G. A. Chelkov, P. W. Luo, L. Fava, K. Begzsuren, Q. An, Jialun Ping, S. S. Sun, Huihui Liu, Zhi Yang, K. H. Rashid, W. P. Wang, Cheng Li, Magnus Wolke, Y. H. Xie, F. Bianchi, Zhang Li, H. B. Li, S. L. Yang, X. Y. Zhang, Y. F. Liang, Wei Xu, B. J. Liu, A. Pitka, K. Goetzen, T. Y. Xing, D. Y. Chen, T. T. Han, P. Adlarson, S. J. Zhao, X. L. Wang, S. Nisar, C. J. Tang, F. De Mori, M. Maggiora, Ling Zhao, C. L. Luo, Y. T. Liang, Y. Hu, J. B. Liu, Xujin Yuan, Z. Ning, J. G. Messchendorp, S. J. Chen, J. L. Li, M. Albrecht, Y. J. Sun, Yifan Yang, Y. P. Lu, S. Y. Xiao, W. Imoehl, Q. J. Xu, M. Rolo, Lei Zhao, B. Q. Wang, Z. L. Hou, V. Rodin, L. Y. Dong, J. Q. Zhang, D. Y. Liu, F. Nerling, X. H. Liu, L. Q. Qin, A. Bortone, S. B. Liu, Y. Nefedov, Q. Zhou, W. D. Li, B. T. Tsednee, W. Kühn, Z. Y. You, R. Farinelli, F. F. Sui, M. H. Gu, J. P. Dai, B. Zhong, L. B. Guo, Xuanhong Lou, Viktor Thorén, R. E. Mitchell, Nasser Kalantar-Nayestanaki, I. Balossino, Yue Pan, Fang Liu, U. Wiedner, I. Denysenko, I. Uman, A. Q. Guo, C. W. Wang, H. L. Ma, D. M. Li, R. Kiuchi, S. Y. Li, C. Zhong, J. B. Jiao, Lei Li, Z. A. Zhu, H. Y. Zhang, W. M. Song, X. P. Xu, X. B. Ji, P. Patteri, Y. Fu, X. F. Wang, X. N. Ma, C. X. Yu, R. B. de Boer, M. Kuemmel, Matthew Glenn Kurth, M. Bertani, Y. F. Long, F. Cossio, Ruiting Ma, K. J. Zhu, K. Ravindran, Z. Qian, G. F. Chen, A. N. Zhu, Huanhuan Liu, Z. J. Xiao, H. J. Lu, J. G. Lu, L. Yang, R. S. Shi, Tao Zhang, Shuai Liu, G. Felici, C. P. Shen, C. Z. Yuan, Jianyu Zhang, N. Cao, H. Muramatsu, J. W. Zhao, Q. M. Ma, X. F. Cui, L. D. Liu, J. Y. Zhang, R. Kliemt, X. K. Zhou, Guangyi Zhang, B. Zheng, R. G. Ping, F. E. Maas, Zujian Wang, T. Z. Han, A. Mangoni, J. J. Xu, Y. C. Zhu, X. L. Gao, M. Fritsch, Xu Shan, M. Kavatsyuk, J. D. Lu, Y. K. Heng, T. Hu, C. Schnier, Y. Q. Wang, Z. H. Qin, A. Guskov, M. Pelizaeus, Jie Yu, Y. Schelhaas, H. Xiao, T. Held, Jinfei Wu, Xiangcheng Pan, H. C. Shi, H. J. Li, O. Bakina, Y. H. Zheng, I. B. Nikolaev, Andrzej Kupsc, C. X. Liu, Yi Zhang, X. H. Li, J. H. Yin, L. Wollenberg, Zhenxiong Yuan, A. Calcaterra, Z. G. Zhao, Lei Zhang, H. R. Qi, Q. Q. Song, Y. Yuan, Cong-Feng Qiao, M. L. Chen, L. Z. Liao, W. J. Zhu, W. G. Li, A. G. Denig, T. Holtmann, X. D. Shi, Y. K. Sun, Y. P. Guo, Meng Wang, Muhammad Irshad, Dan Wang, B. X. Zhang, Xingchao Dai, X. T. Huang, M. Shao, Y. T. Gu, S. Gu, C. X. Yue, N. Yu. Muchnoi, C. Dong, S. Sosio, X. S. Kang, P. X. Shen, Z. Wu, G. Rong, Serkant Ali Cetin, T. J. Min, Yu Bai, H. H. Zhang, S. Spataro, Y. H. Zhang, J. F. Sun, J. Y. Liu, G. Cibinetto, S. Q. Qu, Z. B. Li, W. Ikegami Andersson, S. L. Olsen, A. Sarantsev, R. Kappert, D. H. Wei, P. R. Li, J. S. Lange, Xu Yan, R. T. Ma, S. Marcello, Y. Zeng, Z. Y. Wang, Zhiqing Zhang, H. M. Liu, Zhe Sun, Yao Wang, Teresa Lenz, M. Lellmann, S. Maldaner, Lingxuan Zhang, Y. X. Tan, G. F. Xu, S. Lusso, J. F. Hu, S. Jin, Anita, F. A. Harris, H. B. Jiang, W. L. Chang, Jiawei Zhang, X. H. Mo, G. F. Cao, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, X. P. Qin, Y. F. Wang, L. L. Wang, H. Cai, L. Q. Huang, Joachim Pettersson, M. X. Luo, Dylan Jaide White, J. J. Song, L. Sun, F. Feldbauer, Jacek Biernat, D. V. Dedovich, H. Leithoff, Z. L. Huang, Feng Liu, M. Ablikim, T. Hussain, X. Y. Jiang, Y. N. Gao, X. Y. Ma, W. X. Gong, A. Pathak, T. Johansson, J. F. Chang, C. H. Li, Y. Zhang, O. B. Kolcu, X. Cai, L. Lavezzi, Yan Zhang, S. Ahmed, Y. X. Yang, W. Gradl, Y. X. Song, Q. Zhao, Y. Z. Sun, I. K. Keshk, H. B. Liu, C. X. Lin, Alexander Leon Gilman, M. Rump, Gang Zhao, B. Kopf, K. L. He, Ziyi Wang, S. W. Han, M. Z. Wang, Jimin Zhao, P. L. Li, C. F. Redmer, M. Qi, H. J. Yang, X. L. Lu, D. C. Shan, L. Koch, A. Khoukaz, R. Baldini Ferroli, J. Libby, Yaquan Fang, M. Greco, Shou-hua Zhu, Krisztian Peters, John Jake Lane, Guoqiang Yu, S. Malde, K. Schoenning, B. S. Zou, H. Liang, Haiping Peng, Tao Luo, B. X. Yu, Shulei Zhang, H. S. Chen, Alperen Yuncu, H. L. Dai, Ke Wang, W. Y. Sun, Ke Liu, R. Poling, F. H. Heinsius, Q. A. Malik, G. Mezzadri, W. C. Yan, B. L. Wang, Zhiqiang Liu, L. M. Gu, M. N. Achasov, L. P. Zhou, Y. M. Ma, Z. P. Mao, Y. X. Zhao Zhao, J. Fang, Ch. Rosner, G. Y. Tang, X. H. Xie, Jie Zhao, Alexey Zhemchugov, H. M. Hu, F. H. Liu, Nicolas Berger, J. W. Zhang, T. Y. Qi, M. Himmelreich, W. H. Wang, T. Yu, Wenbin Qian, Y. G. Gao, X. Q. Hao, S. Nakhoul, S. Jaeger, P. Larin, and L. J. Wu

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Sigma, 010306 general physics, Branching (polymer chemistry), 01 natural sciences, Bar (unit)
Abstract

We measured the branching fractions of the decays χcJ→Σ-Σ¯+ for the first time using the final states nn¯π+π-. The data sample exploited here is 448.1×106 ψ(3686) events collected with BESIII. We find B(χcJ→Σ-Σ¯+)=(51.3±2.4±4.1)×10-5,(5.7±1.4±0.6)×10-5, and (4.4±1.7±0.5)×10-5, for J=0, 1, 2, respectively, where the first uncertainties are statistical and the second systematic.

Published
2020

48. Impact of third-order dispersion and three-photon absorption on mid-infrared time magnification via four-wave mixing in Si

Author

Aihu, Zheng, Qibing, Sun, Leiran, Wang, Mulong, Liu, Chao, Zeng, Guoxi, Wang, Lingxuan, Zhang, Weichen, Fan, Wei, Zhao, and Wenfu, Zhang

Abstract

We investigate the influence of third-order dispersion of dispersive elements, three-photon absorption and free-carrier effects on mid-infrared time magnification via four-wave mixing (FWM) in ${{\rm Si}_{0.8}}{{\rm Ge}_{0.2}}$Si

Published
2020

49. Observation of D+→ηηπ+ and improved measurement of D0(+)→ηπ+π−(0)

Author

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

Subjects
Physics, Particle physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Pi, CP violation, 010306 general physics, 01 natural sciences
Published
2020

50. Observation of a Resonant Structure in e+e−→K+K−π0π0

Author

Q. A. Malik, G. Mezzadri, M. H. Ye, X. Wang, F. De Mori, C. Sowa, M. Bertani, L. M. Gu, Z. X. Meng, Yao Wang, Y. B. Zhao, L. P. Zhou, P. R. Li, Y. M. Ma, Z. P. Mao, M. Richter, Z. Ning, S. Y. Xiao, X. A. Xiong, L. Yang, Meng Wang, Jinfei Wu, J. Fang, Ch. Rosner, Zhiqing Liu, L. Y. Dong, Huanhuan Liu, A. A. Zafar, Z. G. Wang, G. Felici, H. Y. Zhang, W. G. Li, Y. K. Sun, J. Libby, J. Dong, X. N. Ma, G. Y. Tang, Ke Wang, W. Y. Sun, Haiwen Liu, T. Johansson, J. F. Chang, Y. F. Wang, O. B. Kolcu, X. Cai, L. Lavezzi, X. Q. Hao, Yan Zhang, H. B. Jiang, Xu Yan, R. T. Ma, Jiawei Zhang, Q. P. Ji, S. Spataro, X. P. Xu, Shiqun Li, Shan Jin, S. F. Zhang, F. Li, K. H. Rashid, Yaquan Fang, A. Pitka, K. Goetzen, S. Nisar, X. Tang, G. F. Chen, C. J. Tang, Y. T. Liang, W. Imoehl, H. B. Li, Y. Hu, S. J. Chen, F. C. Ma, W. Gradl, Y. H. Zheng, M. Y. Dong, John Jake Lane, Guoqiang Yu, D. Y. Liu, J. B. Jiao, Guangshun Huang, L. Yan, M. Kuessner, Y. X. Song, Y. P. Lu, Z. A. Liu, Q. M. Ma, V. Prasad, J. Y. Zhang, Lei Li, D. Y. Wang, M. Albrecht, K. Schoenning, B. S. Zou, J. L. Li, A. Yuncu, M. Rolo, Y. Ding, B. J. Liu, X. H. Li, L. Wollenberg, Xiao-Rui Lyu, S. Zhang, Jie Zhao, D. X. Lin, B. Wang, M. Kavatsyuk, S. Han, Xingchao Dai, Alexey Zhemchugov, H. M. Hu, A. G. Denig, C. L. Luo, Q. Zhou, H. C. Shi, Y. Yuan, Y. S. Zhu, G. F. Cao, W. D. Li, B. T. Tsednee, Krisztian Peters, S. L. Yang, B. L. Wang, T. Holtmann, Niklaus Berger, J. Min, T. Liu, J. F. Qiu, L. H. Wu, C. C. Zhang, X. Y. Jiang, M. M. Ma, Tao Sun, J. L. Zhang, B. Zhong, L. B. Guo, H. W. Wen, M. Savrie, Y. Fu, G. A. Chelkov, L. Fava, Zhi Yang, B. Kopf, T. C. Zhao, J. Zhao, X D Shi, F. Cossio, F. F. Sui, M. H. Gu, R. Kiuchi, H. Y. Sheng, T. Hussain, J. Y. Liu, T. Y. Xing, Zongyuan Wang, D. Y. Chen, W. Kühn, Yi Jin, L. Xia, Ruiting Ma, H. B. Liu, K. J. Zhu, M. Fritsch, Y. G. Gao, B. X. Zhang, K. L. He, H. Muramatsu, Ziyi Wang, A. N. Zhu, Ulrich Wiedner, I. Uman, Y. J. Mao, X. Y. Ma, H. X. Yang, T. T. Han, Q. Liu, L. L. Ma, L. Gong, W. Yuan, L. Koch, J. W. Zhao, W. X. Gong, R. Kappert, S. J. Zhao, Tao Zhang, Z. Y. You, Hongrong Qi, J. H. Zou, F. Weidner, C. H. Li, M. Z. Wang, Y. J. Xiao, Y. Zhang, Z. A. Zhu, W. C. Yan, G. X. Sun, J. V. Bennett, H. Xiao, Jimin Zhao, A. Khoukaz, Y. H. Xie, Ziyuan Li, C. X. Yu, Y. C. Zhu, A. Amoroso, S. Nakhoul, A. Q. Guo, Q. Ouyang, Jianhao Zhang, P. L. Li, Z. Jiao, Fu-Hu Liu, S. S. Sun, D. H. Zhang, R. X. Yang, S. Janchiv, X. L. Gao, R. Baldini Ferroli, B. Zheng, R. G. Ping, T. Z. Han, M. Maggiora, Ling Zhao, A. Pathak, S. S. Fang, C. Y. Guan, S. Jaeger, Ke Liu, T. Weber, F. Feldbauer, C. Li, S. Qian, Q. An, Jialun Ping, H. J. Lu, J. G. Lu, Andrzej Kupsc, P. Larin, M. Qi, H. J. Yang, Huihui Liu, Lei Zhao, Z. L. Hou, T. Held, M. Kuemmel, Matthew Glenn Kurth, Xu Shan, A. Dbeyssi, X. S. Qin, C. Zhong, Y. B. Liu, S. Malde, G. F. Xu, C. X. Yue, Q. J. Xu, Feng Liu, F. E. Maas, W. Shan, C. Dong, S. Sosio, M. Himmelreich, Y. Ban, P. Weidenkaff, F. H. Heinsius, Anita, J. G. Messchendorp, Y. P. Guo, S. Gu, T. Hu, X. Y. Zhang, X. L. Wang, C. P. Shen, L. J. Wu, J. Bloms, R. S. Shi, S. P. Wen, Xuanhong Lou, J. P. Dai, M. Ablikim, X. R. Zhou, X. F. Cui, Jianyu Zhang, X. Wu, X. L. Lu, Viktor Thorén, J. B. Liu, O. Bakina, A. Calcaterra, Z. G. Zhao, X. N. Li, L. Z. Liao, P. L. Wang, Cheng Li, R. E. Mitchell, C. Z. Yuan, N. Cao, Nasser Kalantar-Nayestanaki, Y. J. Sun, Yifan Yang, Zujian Wang, Angelo Rivetti, Haiping Peng, Joachim Pettersson, P. Kiese, Y. J. Mo, Muhammad Irshad, L. Q. Qin, Yuan Hou, C. Morales Morales, Hao Liang, X. L. Luo, X. L. Ji, Y. Bai, P. X. Shen, Tao Luo, Yue Pan, R. A. Briere, I. Balossino, C. F. Redmer, D. C. Shan, T. Y. Qi, J. D. Lu, C. W. Wang, G. Rong, J. Tang, H. H. Zhang, Y. K. Heng, X. Y. Song, Cong-Feng Qiao, Z. Wu, Evelina Gersabeck, C. Schnier, Y. Q. Wang, L. D. Liu, S. Ahmed, K. Begzsuren, Y. X. Yang, Z. J. Sun, N. Yu. Muchnoi, X. S. Jiang, Y. Schelhaas, Yunlong Zhang, F. Bianchi, B. X. Yu, Zhiqing Zhang, D. Bettoni, W. J. Zhu, F. A. Harris, J. F. Hu, Y. H. Zhang, X. D. Shi, M. Lellmann, Lingxuan Zhang, Y. X. Tan, W. B. Yan, S. Maldaner, W. L. Chang, Huimin Wang, Xiang-Gan Liu, M. L. Chen, Zhiyong Zhang, L Y Liu, X. S. Kang, X. T. Huang, R. Poling, S. H. Zhu, T. Yu, H. Leithoff, M. N. Achasov, J. F. Sun, X. P. Qin, Z. Y. Wang, X. Liu, Q. Q. Song, Jianping Zheng, W. P. Wang, Z. H. Qin, Q. Zhao, X. K. Zhou, M. G. Zhao, Y. H. Yang, X. X. Ma, S. Pacetti, H. S. Chen, H. Qi, C. X. Liu, S. Marcello, Y. Z. Sun, X. Y. Shen, Y. G. Xie, Li Zhou, Y. Zeng, T. J. Min, J. Zhu, X. F. Wang, Wei Xu, K. Y. Liu, I. Garzia, H. L. Dai, Igor Boyko, J. C. Li, Zhe Sun, S. Lusso, P. Adlarson, Xiang Zhou, I. K. Keshk, N. Huesken, Serkant Ali Cetin, S. X. Du, C. X. Lin, Ke Li, M. Destefanis, J. Zhuang, M. Rump, Gang Zhao, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, Fang Liu, M. X. Luo, Dylan Jaide White, R. Farinelli, H. J. Li, I. Denysenko, Stephen Lars Olsen, J. Q. Zhang, H. L. Ma, T. Lenz, D. M. Li, Michael Papenbrock, D. V. Dedovich, Shuai Liu, B. Y. Zhang, J. J. Xu, Guangyi Zhang, M. Pelizaeus, Y. F. Long, B. C. Ke, Z. J. Xiao, K. Ravindran, M. Greco, Magnus Wolke, Y. F. Liang, D. P. Jin, X. Pan, Yi Zhang, Xujin Yuan, R. P. Guo, S. Q. Qu, S. B. Liu, Z. B. Li, W. Ikegami Andersson, Y. Nefedov, F. Nerling, X. H. Mo, L. S. Wang, L. L. Wang, H. Cai, L. Q. Huang, Jacek Biernat, I. B. Nikolaev, J. H. Yin, Lei Zhang, M. Shao, Y. T. Gu, A. Sarantsev, D. H. Wei, J. S. Lange, Bingxuan Liu, G. Wilkinson, W. S. Cheng, Yao Zhang, G. Li, A. Gilman, C. D. Fu, C. Q. Feng, X. R. Chen, Z. Y. Deng, Xingguo Li, R. Kliemt, A. Mangoni, A. Guskov, Jie Yu, G. Cibinetto, P. W. Luo, L. K. Li, V. Rodin, X. B. Ji, and P. Patteri

Subjects
Physics, Particle physics, 0103 physical sciences, Structure (category theory), General Physics and Astronomy, 010306 general physics, 01 natural sciences, Energy (signal processing), Luminosity
Abstract

A partial-wave analysis is performed for the process e^{+}e^{-}→K^{+}K^{-}π^{0}π^{0} at the center-of-mass energies ranging from 2.000 to 2.644 GeV. The data samples of e^{+}e^{-} collisions, collected by the BESIII detector at the BEPCII collider with a total integrated luminosity of 300 pb^{-1}, are analyzed. The total Born cross sections for the process e^{+}e^{-}→K^{+}K^{-}π^{0}π^{0}, as well as the Born cross sections for the subprocesses e^{+}e^{-}→ϕπ^{0}π^{0}, K^{+}(1460)K^{-}, K_{1}^{+}(1400)K^{-}, K_{1}^{+}(1270)K^{-}, and K^{*+}(892)K^{*-}(892), are measured versus the center-of-mass energy. The corresponding results for e^{+}e^{-}→K^{+}K^{-}π^{0}π^{0} and ϕπ^{0}π^{0} are consistent with those of BABAR with better precision. By analyzing the cross sections for the four subprocesses, K^{+}(1460)K^{-}, K_{1}^{+}(1400)K^{-}, K_{1}^{+}(1270)K^{-}, and K^{*+}(892)K^{*-}(892), a structure with mass M=(2126.5±16.8±12.4) MeV/c^{2} and width Γ=(106.9±32.1±28.1) MeV is observed with an overall statistical significance of 6.3σ, although with very limited significance in the subprocesses e^{+}e^{-}→K_{1}^{+}(1270)K^{-} and K^{*+}(892)K^{*-}(892). The resonant parameters of the observed structure suggest it can be identified with the ϕ(2170), thus the results provide valuable input to the internal nature of the ϕ(2170).

Published
2020

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