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1. Genetic Variants in p53 Pathway Genes Affect Survival of Patients with HBV-Related Hepatocellular Carcinoma

Author

Qin L, Qiu M, Tang J, Liu S, Lin Q, Huang Q, Wei X, Wen Q, Chen P, Zhou Z, Cao J, Liang X, Guo Q, Nong C, Gong Y, Wei Y, Jiang Y, Yu H, and Liu Y

Subjects
hepatocellular carcinoma, hepatitis b virus, p53 signaling pathway, genetic variants, survival, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Liming Qin,1,2,&ast; Moqin Qiu,3,&ast; Jingmei Tang,2 Shuyan Liu,4 Qiuling Lin,5 Qiongguang Huang,2 Xiaoxia Wei,5 Qiuping Wen,1 Peiqin Chen,6 Zihan Zhou,7 Ji Cao,7 Xiumei Liang,8 Qian Guo,9 Cunli Nong,9 Yizhen Gong,5 Yuying Wei,1 Yanji Jiang,10 Hongping Yu,1,2,11– 13 Yingchun Liu1 1Department of Experimental Research, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 2School of Public Health, Guangxi Medical University, Nanning, People’s Republic of China; 3Department of Respiratory Oncology, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 4Key Laboratory of Biological Molecular Medicine Research, Education Department of Guangxi Zhuang Autonomous Region, Guangxi Medical University, Nanning, People’s Republic of China; 5Department of Clinical Research, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 6Editorial Department of Chinese Journal of Oncology Prevention and Treatment, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 7Department of Cancer Prevention and Control, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 8Department of Disease Process Management, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 9Liuzhou Worker’s Hospital, Liuzhou, People’s Republic of China; 10Department of Scientific Research, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China; 11Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Ministry of Education, Guangxi Medical University, Nanning, People’s Republic of China; 12Guangxi Key Laboratory of Early Prevention and Treatment for Regional High Frequency Tumor, Nanning, People’s Republic of China; 13Key Cultivated Laboratory of Cancer Molecular Medicine of Guangxi Health Commission, Guangxi Medical University Cancer Hospital, Nanning, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Yingchun Liu; Hongping Yu, Department of Experimental Research, Guangxi Medical University Cancer Hospital, 71&num; Hedi Road, Qingxiu District, Nanning, People’s Republic of China, Tel +86-15877191237 ; +86-771-5330850, Fax +86-771-5312000, Email liuyingchun@stu.gxmu.edu.cn; yuhongping@stu.gxmu.edu.cnPurpose: P53 is a suppressor gene closely related to carcinogenesis. However, the associations between genetic variants in the p53 signaling pathway and prognosis in hepatitis B virus (HBV)-related hepatocellular carcinoma (HCC) remain unknown. The current study aims to analyze associations between the single nucleotide polymorphisms (SNPs) in p53 pathway-related genes and survival of patients with HBV-HCC.Methods: We evaluated the associations between 4698 SNPs in 70 genes of the p53 pathway and overall survival (OS) of 866 patients in additive genetic models by using Cox proportional hazards regression analysis. Stepwise multivariable Cox regression analysis was conducted to determine the independent effects of identified SNPs in single-locus analyses. The expression of quantitative trait loci (eQTL) was also analyzed using data from GTEx and 1000 Genomes Project, and functional prediction of SNPs was performed by using RegulomeDB v2.2, 3DSNP v2.0, HaploReg v4.2 and VannoPortal.Results: We found that two novel SNPs of CD82 rs7925603 A > G and PMAIP1 rs4396625 A > T, were significantly and independently associated with OS [adjusted hazards ratios (HRs) and 95% confidence intervals (CI) were 1.27 (1.10– 1.48) and 0.77 (0.66– 0.91), respectively; P = 0.001 and = 0.002, respectively] and that the combined risk genotypes of these SNPs showed a significant association with OS in patients with HBV-HCC (Ptrend < 0.001). Further eQTL analysis in the GTEx dataset showed that the rs7925603 G allele was associated with lower CD82 mRNA expression levels, while the rs4396625 T allele was associated with higher PMAIP1 mRNA expression levels in whole blood cells.Conclusion: We identified two observed survival-associated SNPs in CD82 and PMAIP1 in the p53 pathway, which influenced HBV-HCC survival possibly through a mechanism of altering mRNA expression. Large studies are warranted to validate our findings.Keywords: hepatocellular carcinoma, hepatitis B virus, p53 signaling pathway, genetic variants, survival

Published
2024

2. Successful Interventional Treatment of Pyopneumothorax Caused by Streptococcus constellatus Associated with Hashimoto’s Thyroiditis: A Case Report and Literature Review

Author

Wang H, Zhou F, Li Z, Ding Y, Wen Q, and Tang Q

Subjects
radiology interventional, streptococcus constellatus, pyopneumothorax, hashimoto’s thyroiditis, Infectious and parasitic diseases, RC109-216
Abstract

Hongxia Wang,1,&ast; Fating Zhou,2,&ast; Zhilin Li,1 Yulan Ding,1 Qian Wen,1 Quanxing Tang1 1Department of General Practice, People’s Hospital of Deyang City, Deyang, Sichuan, People’s Republic of China; 2Emergency Department, Chongqing Emergency Medical Center, Chongqing, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Hongxia Wang, Department of General Practice, People’s Hospital of Deyang City, Deyang, Sichuan, People’s Republic of China, Email HongXia.W@hotmail.comBackground: Streptococcus constellatus rarely causes pyopneumothorax, which is a serious state and requires a surgery. However, not every patient can tolerate surgery and individualized solutions are needed. Furthermore, many known situations are risk factors of S. constellatus infection, but S. constellatus pyopneumothorax associated with Hashimoto’s thyroiditis has not been reported.Case Presentation: We present the case of a 74-year-old male with multiple encapsulated pyopneumothorax caused by S. constellatus. Given his respiratory failure, we provided two-stage percutaneous right empyema radiography for catheter drainage in the radiology interventional department instead of surgery. Moreover, an occult Hashimoto’s thyroiditis was discovered in the patient, which was possibly associated with S. constellatus pyopneumothorax. Levothyroxine was administered to improve his situation.Conclusion: To our knowledge, it is the first case described in this context. We provided an alternative treatment for S. constellatus encapsulated pyopneumothorax in patient who might not tolerate surgery. We also revealed the possible relationship between S. constellatus pyopneumothorax and Hashimoto’s thyroiditis.Keywords: radiology interventional, Streptococcus constellatus, pyopneumothorax, Hashimoto’s thyroiditis

Published
2023

3. Myeloid/Lymphoid Neoplasms with ETV6::PDGFRB Fusion Gene: A Rare Case of Poor Response to Imatinib and Possible Transformation Mechanisms from Myeloid Neoplasms of Bone Marrow to T-Cell Lymphoblastic Lymphoma Invasion in Lymph Nodes

Author

Gou Y, Tang Y, Liu S, Cheng S, Deng X, Wen Q, Feng Y, Peng X, Wang P, and Zhang X

Subjects
etv6, pdgfrb, fusion, myeloid/lymphoid neoplasms, imatinib, Pathology, RB1-214, Therapeutics. Pharmacology, RM1-950
Abstract

Yang Gou,&ast; Yongjie Tang,&ast; Shuiqing Liu, Siyu Cheng, Xiaojuan Deng, Qin Wen, Yimei Feng, Xiangui Peng, Ping Wang, Xi Zhang Medical Center of Hematology, Xinqiao Hospital of Army Medical University, Chongqing, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Ping Wang, Medical Center of Hematology, The Xinqiao Hospital of Army Medical University, Chongqing, People’s Republic of China, Email wpii_2002@sina.comAbstract: The ETV6::PDGFRB fusion gene is commonly reported in chronic myelomonocytic leukemia with eosinophilia, yet patients with ETV6::PDGFRB presenting myeloid and lymphoid neoplasms successively have not been reported. Here, we report the first case of a 35-year-old man with myeloid and lymphoid neoplasms harboring an ETV6::PDGFRB fusion gene who demonstrated poor response to imatinib. The patient was diagnosed with an ETV6::PDGFRB fusion gene myeloid neoplasm on initial diagnosis at our hospital. After 5 months of treatment with imatinib, he was diagnosed with T-cell lymphoblastic lymphoma. ETV6::PDGFRB turned negative after increasing the dose of imatinib, but enlarged superficial lymph nodes reappeared the following year. Notably, the patient exhibited a worse response to imatinib treatment. This study describes this rare case and speculates on a possible mechanism.Keywords: ETV6, PDGFRB, fusion, myeloid/lymphoid neoplasms, imatinib

Published
2023

4. Spatiotemporally Comparative Analysis of HIV, Pulmonary Tuberculosis, HIV-Pulmonary Tuberculosis Coinfection in Jiangsu Province, China

Author

Wu Z, Fu G, Wen Q, Wang Z, Shi LE, Qiu B, and Wang J

Subjects
pulmonary tuberculosis, hiv, spatial autocorrelation analysis, socioeconomic determinants, bayesian space-time interaction model, Infectious and parasitic diseases, RC109-216
Abstract

Zhuchao Wu,1,&ast; Gengfeng Fu,2,&ast; Qin Wen,1,&ast; Zheyue Wang,1 Lin-en Shi,2 Beibei Qiu,1 Jianming Wang1,3,4 1Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People’s Republic of China; 2Department of STI and HIV Control and Prevention, Center for Disease Control and Prevention of Jiangsu Province, Nanjing, 210009, People’s Republic of China; 3Department of Epidemiology, Gusu School, Nanjing Medical University, Nanjing, 211166, People’s Republic of China; 4Changzhou Medical Center, Nanjing Medical University, Nanjing, 211166, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Jianming Wang, Department of Epidemiology, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, People’s Republic of China, Tel +86-25-86868414, Email jmwang@njmu.edu.cnPurpose: Pulmonary tuberculosis (PTB) is a severe chronic communicable disease that causes a heavy disease burden in China. Human Immunodeficiency Virus (HIV) and PTB coinfection dramatically increases the risk of death. This study analyzes the spatiotemporal dynamics of HIV, PTB and HIV-PTB coinfection in Jiangsu Province, China, and explores the impact of socioeconomic determinants.Patients and Methods: The data on all notified HIV, PTB and HIV-PTB coinfection cases were extracted from Jiangsu Provincial Center for Disease Control and Prevention. We applied the seasonal index to identify high-risk periods of the disease. Time trend, spatial autocorrelation and SaTScan were used to analyze temporal trends, hotspots and spatiotemporal clusters of diseases. The Bayesian space-time model was conducted to examine the socioeconomic determinants.Results: The case notification rate (CNR) of PTB decreased from 2011 to 2019 in Jiangsu Province, but the CNR of HIV and HIV-PTB coinfection had an upward trend. The seasonal index of PTB was the highest in March, and its hotspots were mainly distributed in the central and northern parts, such as Xuzhou, Suqian, Lianyungang and Taizhou. HIV had the highest seasonal index in July and HIV-PTB coinfection had the highest seasonal index in June, with their hotspots mainly distributed in southern Jiangsu, involving Nanjing, Suzhou, Wuxi and Changzhou. The Bayesian space-time interaction model showed that socioeconomic factor and population density were negatively correlated with the CNR of PTB, and positively associated with the CNR of HIV and HIV-PTB coinfection.Conclusion: The spatial heterogeneity and spatiotemporal clusters of PTB, HIV and HIV-PTB coinfection are exhibited obviously in Jiangsu. More comprehensive interventions should be applied to target TB in the northern part. While in southern Jiangsu, where the economic level is well-developed and the population density is high, we should strengthen the prevention and control of HIV and HIV-PTB coinfection.Keywords: pulmonary tuberculosis, HIV, spatial autocorrelation analysis, socioeconomic determinants, Bayesian space-time interaction model

Published
2023

5. Review of the Current Situation of Postoperative Pain and Causes of Inadequate Pain Management in Africa

Author

Gao L, Mu H, Lin Y, Wen Q, and Gao P

Subjects
africa, postoperative pain, pain management, analgesia, pain in children, pain assessment, Medicine (General), R5-920
Abstract

Lejun Gao,1,&ast; Huaixin Mu,2,&ast; Yun Lin,1 Qingping Wen,1,3 Peng Gao1 1Department of Anesthesiology, First Affiliated Hospital of Dalian Medical University, Dalian, People’s Republic of China; 2Emergency Department, Shenyang Children’s Hospital, Shenyang, People’s Republic of China; 3Department of Anesthesiology, Dalian Medical University, Dalian, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Peng Gao; Qingping Wen, Department of Anesthesiology, First Affiliated Hospital of Dalian Medical University, NO. 222 Zhongshan Road, Dalian, 116011, People’s Republic of China, Tel/Fax +86 411 86110440, Email dalianpeople@163.com; dmuwqp@163.comAbstract: Postoperative pain is one of the most prevalent complications following surgery, and more than 47% of surgical patients endure postoperative discomfort worldwide. In Africa, due to resource shortages and other issues, postoperative pain is substantially more common when compared to developed countries. Severe postoperative pain has many negative effects, including possibly death, which can burden both individuals and society as a whole. Therefore, effectively controlling postoperative pain is becoming increasingly important. To enhance the effectiveness of future pain management, a thorough analysis of the current reasons for inadequate postoperative pain management is necessary. In this article, the present situations of occurring postoperative pain, children’s postoperative pain, and pain management in Africa are reviewed, based on relevant and recent literature. In particular, the reasons for inadequate postoperative pain management in Africa are detailed in this article from five perspectives: the inadequate assessment of postoperative pain, the knowledge gap among medical professionals, the patients’ misconceptions, the scarcity of resources, and the lack of medications. Additionally, we offer appropriate solutions following various factors.Keywords: Africa, postoperative pain, pain management, analgesia, pain in children, pain assessment

Published
2023

6. MTHFR and MTRR Genetic Polymorphism of Methotrexate Therapy Outcomes in Early Rheumatoid Arthritis

Author

Zhang Q, Fu P, Cao Z, Huang H, Wen Q, Wang K, Kong T, Wu X, and Zheng J

Subjects
mthfr，mtrr，methotrexate，rheumatoid arthritis，das28, Therapeutics. Pharmacology, RM1-950
Abstract

Qian Zhang,1,2 Pan Fu,2 Zhanglei Cao,2 Hua Huang,3 Qinwen Wen,3 Kaizhe Wang,2 Tong Kong,2 Xiudi Wu,3 Jianping Zheng2 1Jiangxi Key Laboratory for Rare Earths Magnetic Materials and Devices, College of Rare Earths, Jiangxi University of Science and Technology, Ganzhou, 341000, People’s Republic of China; 2Cixi Institute of Biomedical Engineering, Ningbo Institute of Materials Technology & Engineering, Chinese Academy of Sciences (CAS), Ningbo, 315300, People’s Republic of China; 3Department of Rheumatology and Immunology, Ningbo First Hospital, Ningbo, 315010, People’s Republic of ChinaCorrespondence: Jianping Zheng; Xiudi Wu, Tel +86– 18091984088 ; +86– 13857826442, Email zhengjianping@nimte.ac.cn; awu1100@aliyun.comPurpose: Methotrexate (MTX) is used as an anchor drug for the treatment of rheumatoid arthritis (RA) and there may be differences in drug action between genotypes. The purpose of this study was to investigate the relationship between clinical efficacy response and disease activity of MTX monotherapy with methylenetetrahydrofolate reductase (MTHFR) and methionine synthase reductase (MTRR) polymorphisms.Patients and Methods: In the study, a population of 32 patients in East China with early RA fulfilling the diagnostic standards of the American College of Rheumatology (ACR) were enrolled, all of them received MTX monotherapy. Genotyping of patients MTHFR C677T and A1298C, MTRR A66G using tetra-primer ARMS-PCR method and sanger sequencing to verify its accuracy.Results: The distribution of three polymorphic genotypes that were studied is in accordance with the Hardy-Weinberg genetic equilibrium. The patient pathology variables smoke (OR = 0.088, P = 0.037), drink alcohol (OR = 0.039, P = 0.016) and males (OR = 0.088, P = 0.037) were significantly associated with non-response to MTX. Genotype, allele distribution and genetic statistical models were not found to be related to MTX treatment response and disease activity in both the response groups and non-response groups.Conclusion: Our findings suggest that the MTHFR C677T, MTHFR A1298C and MTRR A66G polymorphisms may not predict MTX clinical treatment response and disease activity in patients with early RA. The study revealed that smoke, alcohol, and males were possible influential factors for MTX non-response.Keywords: MTHFR, MTRR, methotrexate, rheumatoid arthritis, DAS28

Published
2023

7. Bacteria-Driven Tumor Microenvironment-Sensitive Nanoparticles Targeting Hypoxic Regions Enhances the Chemotherapy Outcome of Lung Cancer

Author

Shi H, Chen L, Liu Y, Wen Q, Lin S, Lu Y, Dai J, Li J, Xiao S, and Fu S

Subjects
tumor hypoxia, bifidobacterium infantis, paclitaxel, nanoparticles, lung cancer, Medicine (General), R5-920
Abstract

Huan Shi,1,&ast; Lan Chen,2,&ast; Yanlin Liu,1,&ast; Qinglian Wen,1 Sheng Lin,1 Qian Wen,1 Yun Lu,1 Jie Dai,1 Jianmei Li,1 Susu Xiao,1 Shaozhi Fu1 1Department of Oncology, the Affiliated Hospital of Southwest Medical University, Luzhou, People’s Republic of China; 2Department of Oncology, the Affiliated Traditional Chinese Medicine Hospital of Southwest Medical University, Luzhou, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Shaozhi Fu, Tel +86 830-3165698, Fax +86 830-3165690, Email shaozhifu513@163.comBackground: Chemotherapy still plays a dominant role in cancer treatment. However, the inability of conventional chemotherapeutic drugs to reach the hypoxic zone of solid tumors significantly weakens their efficacy. Bacteria-mediated drug delivery systems can be an effective targeting strategy for improving the therapeutic outcomes in cancer. Anaerobic bacteria have the unique ability to selectively transport drug loads to the hypoxic regions of tumors.Methods: We designed a Bifidobacterium infantis (Bif)-based biohybrid (Bif@PDA-PTX-NPs) to deliver polydopamine (PDA)-coated paclitaxel nanoparticles (PTX-NPs) to tumor tissues.Results: The self-driven Bif@PDA-PTX-NPs maintained the toxicity of PTX as well as the hypoxic homing tendency of Bif. Furthermore, Bif@PDA-PTX-NPs significantly inhibited the growth of A549 xenografts in nude mice, and prolonged the survival of the tumor-bearing mice compared to the other PTX formulations without any systemic or localized toxicity.Conclusion: The Bif@PDA-PTX-NPs biohybrids provide a new therapeutic strategy for targeted chemotherapy to solid tumors.Keywords: tumor hypoxia, bifidobacterium infantis, paclitaxel, nanoparticles, lung cancer

Published
2023

8. Enzyme and Reactive Oxygen Species–Responsive Dual-Drug Delivery Nanocomplex for Tumor Chemo-Photodynamic Therapy

Author

Xie Q, Gao S, Tian R, Wang G, Qin Z, Chen M, Zhang W, Wen Q, Ma Q, and Zhu L

Subjects
chemotherapy, photodynamic therapy, hyaluronic acid, responsive nanoparticle, drug delivery, Medicine (General), R5-920
Abstract

Qian Xie,1,* Shi Gao,1,* Rui Tian,2 Guohao Wang,3,4 Zainen Qin,5 Minglong Chen,1 Wenhui Zhang,1 Qiang Wen,1 Qingjie Ma,1 Lei Zhu1 1Department of Nuclear Medicine, China-Japan Union Hospital of Jilin University, NHC Key Laboratory of Radiobiology, School of Public Health of Jilin University, Changchun, 130033, People’s Republic of China; 2Department of Ophthalmology Second Hospital, Jilin University, Changchun, 130033, People’s Republic of China; 3Cancer Centre, Faculty of Health Sciences, University of Macau, Macau, SAR, 999078, People’s Republic of China; 4Institute of Translational Medicine, Faculty of Health Sciences, University of Macau, Macau, SAR, 999078, People’s Republic of China; 5Department of Oral Radiology, Guangxi Medical University College of Stomatology, Nanning, 530021, People’s Republic of China*These authors contributed equally to this workCorrespondence: Qingjie Ma; Lei Zhu, Email maqj@jlu.edu.cn; zeh.ray8@gmail.comIntroduction: Combination therapy is a promising approach to promote the efficacy and reduce the systemic toxicity of cancer therapy. Herein, we examined the potency of a combined chemo-phototherapy approach by constructing a hyaluronidase- and reactive oxygen species-responsive hyaluronic acid nanoparticle carrying a chemotherapy drug and a photosensitizer in a tumor-bearing mouse model. We hypothesized that following decomposition, the drugs inside the nanocomplex will be released in the tumors to provide effective tumor treatment. We aimed to design a smart drug delivery system that can improve traditional chemotherapy drug delivery and enhance the therapeutic efficacy in combination with photodynamic therapy.Methods: Hydrophilic hyaluronic acid (HA) was covalently modified with a hydrophobic 5β-cholanic acid (CA) via an ROS-cleavable thioketal (tk) linker for a targeted co-deliver of 10-Hydroxy camptothecin (HCPT) and Chlorin e6 (Ce6) into tumors to improve the efficiency of combined chemo-photodynamic therapy.Results: The obtained HA-tk-CA nanoparticle carrying HCPT and Ce6, named HTCC, accumulated in the tumor through the enhanced permeable response (EPR) effect and HA-mediated CD44 targeting after intravenous administration. Upon laser irradiation and hyaluronidase degradation, HTCC was disrupted to release HCPT and Ce6 into the tumors. Compared to the monotherapy approach, HTCC demonstrated enhanced tumor growth inhibition and minimized systemic toxicity in a tumor-bearing mouse model.Conclusion: Our results suggested that controlled dual-drug release not only improved tumor drug delivery efficacy, but also reduced systemic side effects. In addition to HCPT and Ce6 delivery, the HA-tk-CA nanocomplex can be used to deliver other drugs in synergistic cancer therapy. Since most current combined therapy uses free drugs with distinct spatiotemporal distributions, the simultaneous co-delivery of dual drugs with a remote on-demand drug delivery nanosystem provides an alternative strategy for drug delivery design.Keywords: chemotherapy, photodynamic therapy, hyaluronic acid, responsive nanoparticle, drug delivery

Published
2023

9. UCHL1 Promoted Polarization of M1 Macrophages by Regulating the PI3K/AKT Signaling Pathway

Author

Huang Y, He S, Chen Y, Sheng J, Fu Y, Du X, Yang Y, Liu H, Han Z, Wen Q, Zhou C, Zhou X, Hu S, and Ma L

Subjects
uchl1, macrophages, akt, p110α, autophagy, Pathology, RB1-214, Therapeutics. Pharmacology, RM1-950
Abstract

Yulan Huang,&ast; Shitong He,&ast; Yitian Chen, Junli Sheng, Yuling Fu, Xialin Du, Yalong Yang, Honglin Liu, Zhenyu Han, Yingqi Huang, Qian Wen, Chaoying Zhou, Xinying Zhou, Shengfeng Hu, Li Ma Institute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, 510515, People’s Republic of China&ast;These authors contributed equally to this workCorrespondence: Li Ma; Shengfeng HuInstitute of Molecular Immunology, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, 510515, People’s Republic of China, Email mali_61648322@smu.edu.cn; hushengfeng@smu.edu.cnBackground: As deubiquitinases (DUBs), ubiquitin C-terminal hydrolase (UCH)-L1 has been shown to play a crucial role in regulating diverse biological processes. However, its function in macrophage polarization remains unclear.Methods: We performed in vivo and in vitro experiments to investigate the role of ubiquitin carboxyl-terminal hydrolase L1 (UCHL1), a kind of DUBs, in macrophage differentiation by using UCHL1-deficiency mice.Results: We demonstrated that LPS stimulation induced UCHL1 expression in macrophages. The deficiency of UCHL1 expression decreased the expression of CD80 and CD86 but increased the expression of CD206. The expression of TNF-α, IL-6, iNOS, and IL-10 was downregulated, while that of Arg1, Ym1, and Fizz1 was upregulated in UCHL1 deficient macrophages. Moreover, we observed that UCHL1 promoted the degradation of p110α through autophagy, but paradoxically increased the activity of AKT, thereby promoting polarization of macrophages into pro-inflammatory states.Conclusion: In this study, we identified UCHL1 as a positive regulator of M1 macrophage polarization. Our findings may help in developing therapeutic interventions for the treatment of inflammatory diseases and pathogenic infections.Keywords: UCHL1, macrophages, AKT, p110α, autophagy

Published
2022

10. A Comparative Study of Macular and Choroidal Thickness and Blood-Flow Parameters in Patients with Intermediate and Simple Juvenile Moderate Myopia

Author

Lin T, Yang Y, Lin J, Zhang J, Wen Q, He X, and Chen G

Subjects
choroidal blood flow, choroidal thickness, myopic adolescents, moderate myopia, optical coherence tomography angiography, Medicine (General), R5-920
Abstract

TaiNan Lin,1,* Yan Yang,2,* JinHua Lin,1 JiHui Zhang,1 Qian Wen,1 XiaoLu He,1 GuoQing Chen1 1Department of Ophthalmology, Fujian Provincial Governmental Hospital, Fuzhou, 350003, People’s Republic of China; 2Fujian Center for Disease Control and Prevention, Fuzhou, 350001, People’s Republic of China*These authors contributed equally to this workCorrespondence: TaiNan LinDepartment of Ophthalmology, Fujian Provincial Governmental Hospital, No. 67 of Gupin Street, Gulou District, Fuzhou, 350003, People’s Republic of ChinaTel +86 591 88013047Fax +86 591 88013003Email lintainandr@163.comObjective: This study aimed to compare the macular and choroidal thicknesses and blood-flow parameters of patients with intermediate and simple juvenile moderate myopia in order to provide a greater understanding of the pathogenesis of myopia and a basis for its prevention.Methods: Participants were selected from patients under the age of 18 with moderate myopia who were treated in our ophthalmic clinic between June and December 2019. Seventy-five right eyes were selected from participants with a mean spherical equivalent ranging from − 6.0 to − 3.0 D. These samples were divided into two groups based on eye axial length (AL). The thicknesses of the macula and choroid, the area of the foveal avascular zone (FAZ), and the blood flow density of the macular capillaries were measured, intergroup comparison was conducted.Results: The average area of the FAZ was larger in the intermediate group than in the simple group. PERIM in the upper half was lower in the intermediate group than in the simple group, and the blood-flow density in the lower half of the macular area was higher in the simple group than in the intermediate group. The blood-flow density within 1 mm of the fovea centralis and the downward blood-flow density were higher in the intermediate group than in the simple group. The thicknesses of the lower part of the FAZ, the choroid of the fovea centralis, and the choroid under the retina were all larger in the intermediate group than in the simple group.Conclusion: The area of the FAZ in patients with intermediate juvenile moderate myopia is larger than that in patients with simple myopia; the choroid in the fovea of macula compensatorily increases, and blood flow density also increases; the thickness of the choroid under the retina increases with myopia.Keywords: choroidal blood flow, choroidal thickness, myopic adolescents, moderate myopia, optical coherence tomography angiography

Published
2021

11. Anlotinib Suppresses Colorectal Cancer Proliferation and Angiogenesis via Inhibition of AKT/ERK Signaling Cascade

Author

Yang Q, Ni L, Imani S, Xiang Z, Hai R, Ding R, Fu S, Wu J, and Wen Q

Subjects
anlotinib, colorectal cancer, angiogenesis, proliferation, tyrosine kinase inhibitor, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Qian Yang,1,* Laichao Ni,1,* Saber Imani,1,* Zhangqiang Xiang,1 Rui Hai,1 Ruilin Ding,1 Shaozhi Fu,1 Jing bo Wu,1,2 Qinglian Wen1 1Department of Oncology, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People’s Republic of China; 2Nuclear Medicine and Molecular Imaging Key Laboratory of Sichuan Province, Department of Nuclear Medicine, The Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 646000, People’s Republic of China*These authors contributed equally to this workCorrespondence: Qinglian WenDepartment of Oncology, The Affiliated Hospital of Southwest Medical University, Southwest Medical University, 3-319 Zhongshan Road, Luzhou, Sichuan 646000, People’s Republic of ChinaTel/ Fax +86-830-3160283Email wql73115@hotmail.comBackground: Anlotinib is a highly potent multi-target tyrosine kinase inhibitor, with very good anti-tumor activity against a variety of solid tumors. However, its effect on colorectal cancer (CRC) is not yet clearly understood. The objective of this study was to investigate the anti-tumor effect and underlying mechanism of anlotinib in the pathogenesis of CRC.Materials and Methods: Effects of anlotinib on CT26 cells proliferation and microvessel formation in endothelial cells were determined by MTT assay and tube formation assay. Cell migration and invasion were analyzed by using the wound healing assay and transwell assay. Cell cycle and apoptosis were detected by flow cytometry. A CRC xenograft mouse model was used for conducting in-vivo studies to verify the effect of anlotinib. The expression of Ki-67 and CD31 in the tumor tissue was detected by immunohistochemistry and protein expression was measured by Western blot.Results: In-vitro studies revealed that anlotinib inhibited the proliferation, migration, and invasion of CT26 cells and the tube formation of HUVECs in a dose-dependent manner. Anlotinib also significantly induced cell apoptosis and G2/M arrest. It effectively inhibited tumor growth and prolonged survival time in the CRC xenograft mouse model. Immunohistochemical analysis of the tumor tissue revealed that anlotinib downregulated CD31 and Ki-67 which are the biomarkers of microvessel density and proliferation. Furthermore, anlotinib was able to inhibit the activation of VEGFR-2/AKT and FGFR, PDGFRβ and their downstream signaling ERK.Conclusion: The findings of the present study suggested that anlotinib suppressed cell proliferation and angiogenesis via inhibition of AKT/ERK signaling pathway in colorectal cancer and could be a novel therapeutic strategy for treatment of CRC.Keywords: anlotinib, colorectal cancer, angiogenesis, proliferation, tyrosine kinase inhibitor

Published
2020

12. Prognostic analysis of patients with mutant and wild-type EGFR gene lung adenocarcinoma

Author

Zheng H, Zhang Y, Zhan Y, Liu S, Lu J, Feng J, Wu X, Wen Q, and Fan S

Subjects
EGFR gene mutation, lung adenocarcinoma, clinicopathological features, prognosis, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Hongmei Zheng, Yuting Zhang, Yuting Zhan, Sile Liu, Junmi Lu, Juan Feng, Xia Wu, Qiuyuan Wen, Songqing FanDepartment of Pathology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, People’s Republic of ChinaPurpose: The purpose of this study was to investigate the relationship between epidermal growth factor receptor (EGFR) gene mutation and clinicopathological features of lung adenocarcinoma, and the prognostic and therapeutic value of EGFR.Methods: EGFR gene mutations were detected in 424 patients with lung adenocarcinoma by amplification refractory mutation system (ARMS).Results: The total EGFR gene mutation rate was 55.2% (234/424) and EGFR gene mutation rates were statistically different in gender, smoking status, and pathological degree (P0.05). Among 424 cases of lung adenocarcinoma, multivariate analysis showed that EGFR gene mutation, age, gender, clinical stages, and pathological degree (P

Published
2019

13. Mindfulness-based stress reduction in patients with differentiated thyroid cancer receiving radioactive iodine therapy: a randomized controlled trial

Author

Liu T, Zhang W, Xiao S, Xu L, Wen Q, Bai L, Ma Q, and Ji B

Subjects
Mindfulness-based stress reduction, differentiated thyroid cancer, radioactive iodine therapy, quality of life, anxiety, depression, Neoplasms. Tumors. Oncology. Including cancer and carcinogens, RC254-282
Abstract

Tianji Liu,1,* Wenqi Zhang,1,* Shuai Xiao,2 Lei Xu,3 Qiang Wen,1 Lin Bai,1 Qingjie Ma,1 Bin Ji1 1Department of Nuclear Medicine, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China; 2Department of Nursing, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China; 3Department of Psychology and Neurology, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China *These authors contributed equally to this work Objective: The aim of this study was to evaluate the efficacy of mindfulness-based stress reduction (MBSR) on health-related quality of life (QoL), depression, and anxiety in patients with differentiated thyroid cancer (DTC) receiving radioactive iodine therapy (RIT).Patients and methods: A randomized controlled trial of MBSR with 120 DTC patients was performed. They were randomly assigned into the MBSR intervention group and usual care (UC) group. An 8-week MBSR program was administered to the MBSR group starting 8 weeks before RIT. Health-related QoL, depression, and anxiety were measured immediately before the start of MBSR (T1), immediately after RIT hospitalization was concluded (1 week after concluding the last MBSR session, T2), and 3 months after RIT hospitalization (T3), using the QoL Questionnaire Core 30 Items (QLQ-C30), Self-rating Depression Scale (SDS), and Self-rating Anxiety Scale (SAS).Results: Fifty-three patients in the UC group and 49 patients in the MBSR group completed the study and were analyzed. Both the UC and MBSR groups reported low QoL and high SDS and SAS scores immediately after RIT hospitalization. Patients randomly assigned to the MBSR group showed significantly greater improvements in emotional function (P=0.012, d=–0.03 for T2 and d=1.17 for T3), fatigue (P=0.037, d=1.00 for T2 and d=–0.69 for T3), global QoL (P=0.015, d=1.61 for T2 and d=1.56 for T3), depression (P=0.027, d=–1.19 for T2 and d=–0.83 for T3), and anxiety (P=0.043, d=–1.00 for T2 and d=–0.86 for T3).Conclusion: An 8-week MBSR program significantly improved a wide range of scales in health-related QoL and mitigated depression and anxiety among DTC patients receiving RIT. Keywords: mindfulness-based stress reduction, differentiated thyroid cancer, radioactive iodine therapy, quality of life, anxiety, depression

Published
2019

14. The Sez6 Family Inhibits Complement by Facilitating Factor I Cleavage of C3b and Accelerating the Decay of C3 Convertases

Author

Wen Q. Qiu, Shaopeiwen Luo, Stefanie A. Ma, Priyanka Saminathan, Herman Li, Jenny M. Gunnersen, Harris A. Gelbard, and Jennetta W. Hammond

Subjects
Sez6, Sez6L, Sez6L2, complement, classical pathway, alternative pathway, Immunologic diseases. Allergy, RC581-607
Abstract

The Sez6 family consists of Sez6, Sez6L, and Sez6L2. Its members are expressed throughout the brain and have been shown to influence synapse numbers and dendritic morphology. They are also linked to various neurological and psychiatric disorders. All Sez6 family members contain 2-3 CUB domains and 5 complement control protein (CCP) domains, suggesting that they may be involved in complement regulation. We show that Sez6 family members inhibit C3b/iC3b opsonization by the classical and alternative pathways with varying degrees of efficacy. For the classical pathway, Sez6 is a strong inhibitor, Sez6L2 is a moderate inhibitor, and Sez6L is a weak inhibitor. For the alternative pathway, the complement inhibitory activity of Sez6, Sez6L, and Sez6L2 all equaled or exceeded the activity of the known complement regulator MCP. Using Sez6L2 as the representative family member, we show that it specifically accelerates the dissociation of C3 convertases. Sez6L2 also functions as a cofactor for Factor I to facilitate the cleavage of C3b; however, Sez6L2 has no cofactor activity toward C4b. In summary, the Sez6 family are novel complement regulators that inhibit C3 convertases and promote C3b degradation.

Published
2021
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15. Initial study of sediment antagonism and characteristics of silver nanoparticle-coated biliary stents in an experimental animal model

Author

Tian Y, Xia M, Zhang S, Fu Z, Wen Q, Liu F, Xu Z, Li T, and Tian H

Subjects
silver nanoparticles, biliary stent, stent sediment, characterization, animal experiment, Medicine (General), R5-920
Abstract

Yigeng Tian,1,* Mingfeng Xia,2,* Shuai Zhang,3 Zhen Fu,4 Qingbin Wen,2 Feng Liu,4 Zongzhen Xu,4 Tao Li,4 Hu Tian4 1Department of Physics, School of Physics and Technology, University of Jinan, Jinan, Shandong, People’s Republic of China; 2Department of Surgery, Shandong University of Traditional Chinese Medicine, Jinan, Shandong, People’s Republic of China; 3Department of General Surgery, Sixth People’s Hospital of Jinan, Jinan, Shandong, People’s Republic of China; 4Department of General Surgery, Shandong Provincial Qianfoshan Hospital, Shandong University, Jinan, Shandong, People’s Republic of China *These authors contributed equally to this work Objective: Plastic biliary stents used to relieve obstructive jaundice are frequently blocked by sediment, resulting in loss of drainage. We prepared stents coated with silver nanoparticles (AgNPs) and compared their ability to resist sedimentation with Teflon stents in a beagle model of obstructive jaundice.Methods: AgNP-coated Teflon biliary stents were prepared by chemical oxidation–reduction and evaluated in an obstructive jaundice model that was produced by ligation of common bile duct (CBD); animals were randomized to two equal groups for placement of AgNP-coated or Teflon control stents. Liver function and inflammatory index were found to be similar in the two groups, and the obstruction was relieved. Stents were removed 21 days after insertion and observed by scanning and transmission electron microscopy. The AgNP coating was analyzed by energy dispersive X-ray analysis (EDXA), and the composition of sediment was assayed by Fourier-transform infrared (FTIR) spectroscopy.Results: Electron microscopy revealed a black, closely adherent AgNP stent coating, with thicknesses of 1.5–6 µm. Sediment thickness and density were greater on Teflon than on AgNP-coated stents. EDXA confirmed the stability and integrity of the AgNP coating before and after in vivo animal experimentation. FTIR spectroscopy identified stent sediment components including bilirubin, cholesterol, bile acid, protein, calcium, and other substances.Conclusion: AgNP-coated biliary stents resisted sediment accumulation in this canine model of obstructive jaundice caused by ligation of the CBD. Keywords: silver nanoparticles, biliary stent, stent sediment, characterization, animal model

Published
2016

16. STCF Conceptual Design Report: Volume 1 -- Physics & Detector

Author

Achasov, M., Ai, X. C., Aliberti, R., An, L. P., An, Q., Bai, X. Z., Bai, Y., Bakina, O., Barnyakov, A., Blinov, V., Bobrovnikov, V., Bodrov, D., Bogomyagkov, A., Bondar, A., Boyko, I., Bu, Z. H., Cai, F. M., Cai, H., Cao, J. J., Cao, Q. H., Cao, Z., Chang, Q., Chao, K. T., Chen, D. Y., Chen, H., Chen, H. X., Chen, J. F., Chen, K., Chen, L. L., Chen, P., Chen, S. L., Chen, S. M., Chen, S., Chen, S. P., Chen, W., Chen, X. F., Chen, X., Chen, Y., Chen, Y. Q., Cheng, H. Y., Cheng, J., Cheng, S., Dai, J. P., Dai, L. Y., Dai, X. C., Dedovich, D., Denig, A., Denisenko, I., Ding, D. Z., Dong, L. Y., Dong, W. H., Druzhinin, V., Du, D. S., Du, Y. J., Du, Z. G., Duan, L. M., Epifanov, D., Fan, Y. L., Fang, S. S., Fang, Z. J., Fedotovich, G., Feng, C. Q., Feng, X., Feng, Y. T., Fu, J. L., Gao, J., Ge, P. S., Geng, C. Q., Geng, L. S., Gilman, A., Gong, L., Gong, T., Gradl, W., Gu, J. L., Escalante, A. G., Gui, L. C., Guo, F. K., Guo, J. C., Guo, J., Guo, Y. P., Guo, Z. H., Guskov, A., Han, K. L., Han, L., Han, M., Hao, X. Q., He, J. B., He, S. Q., He, X. G., He, Y. L., He, Z. B., Heng, Z. X., Hou, B. L., Hou, T. J., Hou, Y. R., Hu, C. Y., Hu, H. M., Hu, K., Hu, R. J., Hu, X. H., Hu, Y. C., Hua, J., Huang, G. S., Huang, J. S., Huang, M., Huang, Q. Y., Huang, W. Q., Huang, X. T., Huang, X. J., Huang, Y. B., Huang, Y. S., Hüsken, N., Ivanov, V., Ji, Q. P., Jia, J. J., Jia, S., Jia, Z. K., Jiang, H. B., Jiang, J., Jiang, S. Z., Jiao, J. B., Jiao, Z., Jing, H. J., Kang, X. L., Kang, X. S., Ke, B. C., Kenzie, M., Khoukaz, A., Koop, I., Kravchenko, E., Kuzmin, A., Lei, Y., Levichev, E., Li, C. H., Li, C., Li, D. Y., Li, F., Li, G., Li, H. B., Li, H., Li, H. N., Li, H. J., Li, H. L., Li, J. M., Li, J., Li, L., Li, L. Y., Li, N., Li, P. R., Li, R. H., Li, S., Li, T., Li, W. J., Li, X. H., Li, X. Q., Li, Y., Li, Y. Y., Li, Z. J., Liang, H., Liang, J. H., Liao, G. R., Liao, L. Z., Liao, Y., Lin, C. X., Lin, X. S., Liu, B. J., Liu, C. W., Liu, D., Liu, F., Liu, G. M., Liu, H. B., Liu, J., Liu, J. J., Liu, J. B., Liu, K., Liu, K. Y., Liu, L., Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, Y. W., Liu, Y., Liu, Y. L., Liu, Z. Q., Liu, Z. Y., Liu, Z. W., Logashenko, I., Long, Y., Lu, C. G., Lu, N., Lü, Q. F., Lu, Y., Lv, Z., Lukin, P., Luo, F. J., Luo, T., Luo, X. F., Lyu, H. J., Lyu, X. R., Ma, J. P., Ma, P., Ma, Y., Maas, F., Malde, S., Matvienko, D., Meng, Z. X., Mitchell, R., Dias, J. M., Nefediev, A., Nefedov, Y., Olsen, S. L., Ouyang, Q., Pakhlov, P., Pakhlova, G., Pan, X., Pan, Y., Passemar, E., Pei, Y. P., Peng, H. P., Peng, L., Peng, X. Y., Peng, X. J., Peters, K., Pivovarov, S., Pyata, E., Qi, B. B., Qi, Y. Q., Qian, W. B., Qian, Y., Qiao, C. F., Qin, J. J., Qin, L. Q., Qin, X. S., Qiu, T. L., Rademacker, J., Redmer, C. F., Sang, H. Y., Saur, M., Shan, W., Shan, X. Y., Shang, L. L., Shao, M., Shekhtman, L., Shen, C. P., Shen, J. M., Shen, Z. T., Shi, H. C., Shi, X. D., Shwartz, B., Sokolov, A., Song, J. J., Song, W. M., Song, Y., Song, Y. X., Sukharev, A., Sun, J. F., Sun, L., Sun, X. M., Sun, Y. J., Sun, Z. P., Tang, J., Tang, S. S., Tang, Z. B., Tian, C. H., Tian, J. S., Tikhonov, Y., Todyshev, K., Uglov, T., Vorobyev, V., Wan, B. D., Wang, B. L., Wang, B., Wang, D. Y., Wang, G. Y., Wang, G. L., Wang, H. L., Wang, J., Wang, J. H., Wang, J. C., Wang, M. L., Wang, R., Wang, S. B., Wang, W., Wang, W. P., Wang, X. C., Wang, X. D., Wang, X. L., Wang, X. P., Wang, X. F., Wang, Y. D., Wang, Y. P., Wang, Y. Q., Wang, Y. L., Wang, Y. G., Wang, Z. Y., Wang, Z. L., Wang, Z. G., Wei, D. H., Wei, X. L., Wei, X. M., Wen, Q. G., Wen, X. J., Wilkinson, G., Wu, B., Wu, J. J., Wu, L., Wu, P. W., Wu, T. W., Wu, Y. S., Xia, L., Xiang, T., Xiao, C. W., Xiao, D., Xiao, M., Xie, Y. H., Xing, Y., Xing, Z. Z., Xiong, X. N., Xu, F. R., Xu, J., Xu, L. L., Xu, Q. N., Xu, X. C., Xu, X. P., Xu, Y. C., Xu, Y. P., Xu, Y., Xu, Z. Z., Xuan, D. W., Xue, F. F., Yan, L., Yan, M. J., Yan, W. B., Yan, W. C., Yan, X. S., Yang, B. F., Yang, C., Yang, H. J., Yang, H. R., Yang, H. T., Yang, J. F., Yang, S. L., Yang, Y. D., Yang, Y. H., Yang, Y. S., Yang, Y. L., Yang, Z. Y., Yao, D. L., Yin, H., Yin, X. H., Yokozaki, N., You, S. Y., You, Z. Y., Yu, C. X., Yu, F. S., Yu, G. L., Yu, H. L., Yu, J. S., Yu, J. Q., Yuan, L., Yuan, X. B., Yue, Y. F., Zeng, M., Zeng, S., Zhang, A. L., Zhang, B. W., Zhang, G. Y., Zhang, G. Q., Zhang, H. J., Zhang, H. B., Zhang, J. Y., Zhang, J. L., Zhang, J., Zhang, L., Zhang, L. M., Zhang, R., Zhang, S. L., Zhang, T., Zhang, X., Zhang, Y., Zhang, Y. X., Zhang, Y. T., Zhang, Y. F., Zhang, Y. C., Zhang, Y. M., Zhang, Y. L., Zhang, Z. H., Zhang, Z. Y., Zhao, H. Y., Zhao, J., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, R. G., Zhao, R. P., Zhao, Z. G., Zhao, Z. X., Zhemchugov, A., Zheng, B., Zheng, L., Zheng, Q. B., Zheng, R., Zheng, Y. H., Zhong, X. H., Zhou, H. J., Zhou, H. Q., Zhou, H., Zhou, S. H., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, Y. L., Zhou, Y., Zhou, Y. X., Zhou, Z. Y., Zhu, J. Y., Zhu, K., Zhu, R. D., Zhu, R. L., Zhu, S. H., Zhu, Y. C., Zhu, Z. A., Zhukova, V., Zhulanov, V., Zou, B. S., and Zuo, Y. B.

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology, Physics - Instrumentation and Detectors
Abstract

The Super $\tau$-Charm facility (STCF) is an electron-positron collider proposed by the Chinese particle physics community. It is designed to operate in a center-of-mass energy range from 2 to 7 GeV with a peak luminosity of $0.5\times 10^{35}{\rm cm}^{-2}{\rm s}^{-1}$ or higher. The STCF will produce a data sample about a factor of 100 larger than that by the present $\tau$-Charm factory -- the BEPCII, providing a unique platform for exploring the asymmetry of matter-antimatter (charge-parity violation), in-depth studies of the internal structure of hadrons and the nature of non-perturbative strong interactions, as well as searching for exotic hadrons and physics beyond the Standard Model. The STCF project in China is under development with an extensive R\&D program. This document presents the physics opportunities at the STCF, describes conceptual designs of the STCF detector system, and discusses future plans for detector R\&D and physics case studies.

Published
2023
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18. Acute Exacerbation of Chronic Obstructive Pulmonary Disease: Influence of Social Factors in Determining Length of Hospital Stay and Readmission Rates

Author

Alyson WM Wong, Wen Q Gan, Jane Burns, Don D Sin, and Stephan F van Eeden

Subjects
Diseases of the respiratory system, RC705-779
Abstract

BACKGROUND: Acute exacerbation of chronic obstructive pulmonary disease (AECOPD) is the leading reason for hospitalization in Canada and a significant financial burden on hospital resources. Identifying factors that influence the time a patient spends in the hospital and readmission rates will allow for better use of scarce hospital resources.

Published
2008
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19. STCF conceptual design report (Volume 1): Physics & detector

Author

Achasov, M., Ai, X. C., An, L. P., Aliberti, R., An, Q., Bai, X. Z., Bai, Y., Bakina, O., Barnyakov, A., Blinov, V., Bobrovnikov, V., Bodrov, D., Bogomyagkov, A., Bondar, A., Boyko, I., Bu, Z. H., Cai, F. M., Cai, H., Cao, J. J., Cao, Q. H., Cao, X., Cao, Z., Chang, Q., Chao, K. T., Chen, D. Y., Chen, H., Chen, H. X., Chen, J. F., Chen, K., Chen, L. L., Chen, P., Chen, S. L., Chen, S. M., Chen, S., Chen, S. P., Chen, W., Chen, X., Chen, X. F., Chen, X. R., Chen, Y., Chen, Y. Q., Cheng, H. Y., Cheng, J., Cheng, S., Cheng, T. G., Dai, J. P., Dai, L. Y., Dai, X. C., Dedovich, D., Denig, A., Denisenko, I., Dias, J. M., Ding, D. Z., Dong, L. Y., Dong, W. H., Druzhinin, V., Du, D. S., Du, Y. J., Du, Z. G., Duan, L. M., Epifanov, D., Fan, Y. L., Fang, S. S., Fang, Z. J., Fedotovich, G., Feng, C. Q., Feng, X., Feng, Y. T., Fu, J. L., Gao, J., Gao, Y. N., Ge, P. S., Geng, C. Q., Geng, L. S., Gilman, A., Gong, L., Gong, T., Gou, B., Gradl, W., Gu, J. L., Guevara, A., Gui, L. C., Guo, A. Q., Guo, F. K., Guo, J. C., Guo, J., Guo, Y. P., Guo, Z. H., Guskov, A., Han, K. L., Han, L., Han, M., Hao, X. Q., He, J. B., He, S. Q., He, X. G., He, Y. L., He, Z. B., Heng, Z. X., Hou, B. L., Hou, T. J., Hou, Y. R., Hu, C. Y., Hu, H. M., Hu, K., Hu, R. J., Hu, W. H., Hu, X. H., Hu, Y. C., Hua, J., Huang, G. S., Huang, J. S., Huang, M., Huang, Q. Y., Huang, W. Q., Huang, X. T., Huang, X. J., Huang, Y. B., Huang, Y. S., Hüsken, N., Ivanov, V., Ji, Q. P., Jia, J. J., Jia, S., Jia, Z. K., Jiang, H. B., Jiang, J., Jiang, S. Z., Jiao, J. B., Jiao, Z., Jing, H. J., Kang, X. L., Kang, X. S., Ke, B. C., Kenzie, M., Khoukaz, A., Koop, I., Kravchenko, E., Kuzmin, A., Lei, Y., Levichev, E., Li, C. H., Li, C., Li, D. Y., Li, F., Li, G., Li, G., Li, H. B., Li, H., Li, H. N., Li, H. J., Li, H. L., Li, J. M., Li, J., Li, L., Li, L., Li, L. Y., Li, N., Li, P. R., Li, R. H., Li, S., Li, T., Li, W. J., Li, X., Li, X. H., Li, X. Q., Li, X. H., Li, Y., Li, Y. Y., Li, Z. J., Liang, H., Liang, J. H., Liang, Y. T., Liao, G. R., Liao, L. Z., Liao, Y., Lin, C. X., Lin, D. X., Lin, X. S., Liu, B. J., Liu, C. W., Liu, D., Liu, F., Liu, G. M., Liu, H. B., Liu, J., Liu, J. J., Liu, J. B., Liu, K., Liu, K. Y., Liu, K., Liu, L., Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, Y. W., Liu, Y., Liu, Y. L., Liu, Z. Q., Liu, Z. Y., Liu, Z. W., Logashenko, I., Long, Y., Lu, C. G., Lu, J. X., Lu, N., Lü, Q. F., Lu, Y., Lu, Y., Lu, Z., Lukin, P., Luo, F. J., Luo, T., Luo, X. F., Lyu, H. J., Lyu, X. R., Ma, J. P., Ma, P., Ma, Y., Ma, Y. M., Maas, F., Malde, S., Matvienko, D., Meng, Z. X., Mitchell, R., Nefediev, A., Nefedov, Y., Olsen, S. L., Ouyang, Q., Pakhlov, P., Pakhlova, G., Pan, X., Pan, Y., Passemar, E., Pei, Y. P., Peng, H. P., Peng, L., Peng, X. Y., Peng, X. J., Peters, K., Pivovarov, S., Pyata, E., Qi, B. B., Qi, Y. Q., Qian, W. B., Qian, Y., Qiao, C. F., Qin, J. J., Qin, J. J., Qin, L. Q., Qin, X. S., Qiu, T. L., Rademacker, J., Redmer, C. F., Sang, H. Y., Saur, M., Shan, W., Shan, X. Y., Shang, L. L., Shao, M., Shekhtman, L., Shen, C. P., Shen, J. M., Shen, Z. T., Shi, H. C., Shi, X. D., Shwartz, B., Sokolov, A., Song, J. J., Song, W. M., Song, Y., Song, Y. X., Sukharev, A., Sun, J. F., Sun, L., Sun, X. M., Sun, Y. J., Sun, Z. P., Tang, J., Tang, S. S., Tang, Z. B., Tian, C. H., Tian, J. S., Tian, Y., Tikhonov, Y., Todyshev, K., Uglov, T., Vorobyev, V., Wan, B. D., Wang, B. L., Wang, B., Wang, D. Y., Wang, G. Y., Wang, G. L., Wang, H. L., Wang, J., Wang, J. H., Wang, J. C., Wang, M. L., Wang, R., Wang, R., Wang, S. B., Wang, W., Wang, W. P., Wang, X. C., Wang, X. D., Wang, X. L., Wang, X. L., Wang, X. P., Wang, X. F., Wang, Y. D., Wang, Y. P., Wang, Y. Q., Wang, Y. L., Wang, Y. G., Wang, Z. Y., Wang, Z. Y., Wang, Z. L., Wang, Z. G., Wei, D. H., Wei, X. L., Wei, X. M., Wen, Q. G., Wen, X. J., Wilkinson, G., Wu, B., Wu, J. J., Wu, L., Wu, P., Wu, T. W., Wu, Y. S., Xia, L., Xiang, T., Xiao, C. W., Xiao, D., Xiao, M., Xie, K. P., Xie, Y. H., Xing, Y., Xing, Z. Z., Xiong, X. N., Xu, F. R., Xu, J., Xu, L. L., Xu, Q. N., Xu, X. C., Xu, X. P., Xu, Y. C., Xu, Y. P., Xu, Y., Xu, Z. Z., Xuan, D. W., Xue, F. F., Yan, L., Yan, M. J., Yan, W. B., Yan, W. C., Yan, X. S., Yang, B. F., Yang, C., Yang, H. J., Yang, H. R., Yang, H. T., Yang, J. F., Yang, S. L., Yang, Y. D., Yang, Y. H., Yang, Y. S., Yang, Y. L., Yang, Z. W., Yang, Z. Y., Yao, D. L., Yin, H., Yin, X. H., Yokozaki, N., You, S. Y., You, Z. Y., Yu, C. X., Yu, F. S., Yu, G. L., Yu, H. L., Yu, J. S., Yu, J. Q., Yuan, L., Yuan, X. B., Yuan, Z. Y., Yue, Y. F., Zeng, M., Zeng, S., Zhang, A. L., Zhang, B. W., Zhang, G. Y., Zhang, G. Q., Zhang, H. J., Zhang, H. B., Zhang, J. Y., Zhang, J. L., Zhang, J., Zhang, L., Zhang, L. M., Zhang, Q. A., Zhang, R., Zhang, S. L., Zhang, T., Zhang, X., Zhang, Y., Zhang, Y. J., Zhang, Y. X., Zhang, Y. T., Zhang, Y. F., Zhang, Y. C., Zhang, Y., Zhang, Y., Zhang, Y. M., Zhang, Y. L., Zhang, Z. H., Zhang, Z. Y., Zhang, Z. Y., Zhao, H. Y., Zhao, J., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, R. G., Zhao, R. P., Zhao, Y. X., Zhao, Z. G., Zhao, Z. X., Zhemchugov, A., Zheng, B., Zheng, L., Zheng, Q. B., Zheng, R., Zheng, Y. H., Zhong, X. H., Zhou, H. J., Zhou, H. Q., Zhou, H., Zhou, S. H., Zhou, X., Zhou, X. K., Zhou, X. P., Zhou, X. R., Zhou, Y. L., Zhou, Y., Zhou, Y. X., Zhou, Z. Y., Zhu, J. Y., Zhu, K., Zhu, R. D., Zhu, R. L., Zhu, S. H., Zhu, Y. C., Zhu, Z. A., Zhukova, V., Zhulanov, V., Zou, B. S., and Zuo, Y. B.

Published
2024
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22. Finding top performers through email patterns analysis

Author

Wen, Q., Gloor, P. A., Colladon, A. Fronzetti, Tickoo, P., and Joshi, T.

Subjects
Computer Science - Social and Information Networks, Computer Science - Computation and Language, Physics - Physics and Society, J.4, I.2.7, H.4.0
Abstract

In the information economy, individuals' work performance is closely associated with their digital communication strategies. This study combines social network and semantic analysis to develop a method to identify top performers based on email communication. By reviewing existing literature, we identified the indicators that quantify email communication into measurable dimensions. To empirically examine the predictive power of the proposed indicators, we collected 2 million email archive of 578 executives in an international service company. Panel regression was employed to derive interpretable association between email indicators and top performance. The results suggest that top performers tend to assume central network positions and have high responsiveness to emails. In email contents, top performers use more positive and complex language, with low emotionality, but rich in influential words that are probably reused by co-workers. To better explore the predictive power of the email indicators, we employed AdaBoost machine learning models, which achieved 83.56% accuracy in identifying top performers. With cluster analysis, we further find three categories of top performers, "networkers" with central network positions, "influencers" with influential ideas and "positivists" with positive sentiments. The findings suggest that top performers have distinctive email communication patterns, laying the foundation for grounding email communication competence in theory. The proposed email analysis method also provides a tool to evaluate the different types of individual communication styles.

Published
2021
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23. Broadband, millimeter-wave anti-reflective structures on sapphire ablated with femto-second laser

Author

Takaku, R., Hanany, S., Imada, H., Ishino, H., Katayama, N., Komatsu, K., Konishi, K., Kuwata-Gonokami, M., Matsumura, T., Mitsuda, K., Sakurai, H., Sakurai, Y., Wen, Q., Yamasaki, N. Y., Young, K., and Yumoto, J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

We designed, fabricated, and measured anti-reflection coating (ARC) on sapphire that has 116% fractional bandwidth and transmission of at least 97% in the millimeter wave band. The ARC was based on patterning pyramid-like sub-wavelength structures (SWS) using ablation with a 15 W femto-second laser operating at 1030 nm. One side of each of two discs was fabricated with SWS that had a pitch of 0.54 mm and height of 2 mm. The average ablation volume removal rate was 1.6 mm$^{3}$/min. Measurements of the two-disc sandwich show transmission higher than 97% between 43 and 161 GHz. We characterize instrumental polarization (IP) arising from differential transmission due to asymmetric SWS. We find that with proper alignment of the two disc sandwich RMS IP across the band is predicted to be 0.07% at normal incidence, and less than 0.6% at incidence angles up to 20 degrees. These results indicate that laser ablation of SWS on sapphire and on other hard materials such as alumina is an effective way to fabricate broad-band ARC.

Published
2020
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26. PICO: Probe of Inflation and Cosmic Origins

Author

Hanany, S., Alvarez, M., Artis, E., Ashton, P., Aumont, J., Aurlien, R., Banerji, R., Barreiro, R. B., Bartlett, J. G., Basak, S., Battaglia, N., Bock, J., Boddy, K. K., Bonato, M., Borrill, J., Bouchet, F., Boulanger, F., Burkhart, B., Chluba, J., Chuss, D., Clark, S., Cooperrider, J., Crill, B. P., De Zotti, G., Delabrouille, J., Di Valentino, E., Didier, J., Dore, O., Eriksen, H. K., Errard, J., Essinger-Hileman, T., Feeney, S., Filippini, J., Fissel, L., Flauger, R., Fuskeland, U., Gluscevic, V., Gorski, K. M., Green, D., Hensley, B., Herranz, D., Hill, J. C., Hivon, E., Hlozek, R., Hubmayr, J., Johnson, B. R., Jones, W., Jones, T., Knox, L., Kogut, A., Lopez-Caniego, M., Lawrence, C., Lazarian, A., Li, Z., Madhavacheril, M., Melin, J. B., Meyers, J., Murray, C., Negrello, M., Novak, G., O'Brient, R., Paine, C., Pearson, T., Pogosian, L., Pryke, C., Puglisi, G., Remazeilles, M., Rocha, G., Schmittfull, M., Scott, D., Shirron, P., Stephens, I., Sutin, B., Tomasi, M., Trangsrud, A., van Engelen, A., Vansyngel, F., Wehus, I. K., Wen, Q., Xu, S., Young, K., and Zonca, A.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies, High Energy Physics - Theory
Abstract

The Probe of Inflation and Cosmic Origins (PICO) is a proposed probe-scale space mission consisting of an imaging polarimeter operating in frequency bands between 20 and 800 GHz. We describe the science achievable by PICO, which has sensitivity equivalent to more than 3300 Planck missions, the technical implementation, the schedule and cost., Comment: APC White Paper submitted to the Astro2020 decadal panel; 10 page version of the 50 page mission study report arXiv:1902.10541

Published
2019

27. Impact of the nuclear mass uncertainties on the r process

Author

Wang, Z. Y., Wen, Q. G., and Heng, T. H.

Subjects
Nuclear Theory
Abstract

Based on a simple site-independent approach, we attempt to reproduce the solar $r$-process abundance with four nuclear mass models, and investigate the impact of the nuclear mass uncertainties on the $r$ process. In this paper, we first analyze the reliability of an adopted empirical formula for $\beta$-decay half-lives which is a key ingredient for the $r$ process. Then we apply four different mass tables to study the $r$-process nucleosynthesis together with the calculated $\beta$-decay half-lives, and the existing $\beta$-decay data from FRDM+QRPA is also considered for comparison. The numerical results show that the main features of the solar $r$-process pattern and the locations of the abundance peaks can be reproduced well via the $r$-process simulations. Moreover, we also find that the mass uncertainties can significantly affect the derived astrophysical conditions for the $r$-process site, and resulting in a remarkable impact on the $r$ process., Comment: 12 pages, 4 figures.Accepted by International Journal of Modern Physics E, in press

Published
2019
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31. PICO - The probe of inflation and cosmic origins

Author

Sutin, BM, Alvarez, M, Battaglia, N, Bock, J, Bonato, M, Borrill, J, Chuss, DT, Cooperrider, J, Crill, B, Delabrouille, J, Devlin, M, Essinger-Hileman, T, Fissel, L, Flauger, R, Gorski, K, Green, D, Hanany, S, Hubmayr, J, Johnson, B, Jones, WC, Knox, L, Kogut, A, Lawrence, C, McMahon, J, Matsumura, T, Negrello, M, O'Brient, R, Paine, C, Pryke, C, Shirron, P, Trangsrud, A, Wen, Q, Young, K, and De Zotti, G

Subjects
cosmic microwave background, polarization, space mission, bolometers, cryocooling, B-modes, probe-class, astro-ph.IM, astro-ph.CO
Abstract

The Probe of Inflation and Cosmic Origins (PICO) is a NASA-funded study of a Probe-class mission concept. The toplevel science objectives are to probe the physics of the Big Bang by measuring or constraining the energy scale of inflation, probe fundamental physics by measuring the number of light particles in the Universe and the sum of neutrino masses, to measure the reionization history of the Universe, and to understand the mechanisms driving the cosmic star formation history, and the physics of the galactic magnetic field. PICO would have multiple frequency bands between 21 and 799 GHz, and would survey the entire sky, producing maps of the polarization of the cosmic microwave background radiation, of galactic dust, of synchrotron radiation, and of various populations of point sources. Several instrument configurations, optical systems, cooling architectures, and detector and readout technologies have been and continue to be considered in the development of the mission concept. We will present a snapshot of the baseline mission concept currently under development.

Published
2018

32. Optical design of PICO: A concept for a space mission to probe inflation and cosmic origins

Author

Young, K, Alvarez, M, Battaglia, N, Bock, J, Borrill, J, Chuss, D, Crill, B, Delabrouille, J, Devlin, M, Fissel, L, Flauger, R, Green, D, Gorski, K, Hanany, S, Hills, R, Hubmayr, J, Johnson, B, Jones, W, Knox, L, Kogut, A, Lawrence, C, Matsumura, T, McGuire, J, McMahon, J, O'Brient, R, Pryke, C, Sutin, BM, Tan, XZ, Trangsrud, A, Wen, Q, and De Zotti, G

Subjects
Cosmic microwave background, cosmology, mm-wave optics, polarimetry, instrument design, satellite, mission concept, astro-ph.IM
Abstract

The Probe of Inflation and Cosmic Origins (PICO) is a probe-class mission concept currently under study by NASA. PICO will probe the physics of the Big Bang and the energy scale of inflation, constrain the sum of neutrino masses, measure the growth of structures in the universe, and constrain its reionization history by making full sky maps of the cosmic microwave background with sensitivity 80 times higher than the Planck space mission. With bands at 21-799 GHz and arcmin resolution at the highest frequencies, PICO will make polarization maps of Galactic synchrotron and dust emission to observe the role of magnetic fields in Milky Way's evolution and star formation. We discuss PICO's optical system, focal plane, and give current best case noise estimates. The optical design is a two-reflector optimized open-Dragone design with a cold aperture stop. It gives a diffraction limited field of view (DLFOV) with throughput of 910 cm2sr at 21 GHz. The large 82 square degree DLFOV hosts 12,996 transition edge sensor bolometers distributed in 21 frequency bands and maintained at 0.1 K. We use focal plane technologies that are currently implemented on operating CMB instruments including three-color multi-chroic pixels and multiplexed readouts. To our knowledge, this is the first use of an open-Dragone design for mm-wave astrophysical observations, and the only monolithic CMB instrument to have such a broad frequency coverage. With current best case estimate polarization depth of 0.65 μKCMB-arcmin over the entire sky, PICO is the most sensitive CMB instrument designed to date.

Published
2018

35. Tracing fossil-based plastics, chemicals and fertilizers production in China

Author

Jiang, M., Cao, Y., Liu, C., Chen, D., Zhou, W., Wen, Q., Yu, H., Jiang, J., Ren, Y., Hu, S., Hertwich, E., Zhu, B., Jiang, M., Cao, Y., Liu, C., Chen, D., Zhou, W., Wen, Q., Yu, H., Jiang, J., Ren, Y., Hu, S., Hertwich, E., and Zhu, B.

Abstract

Phasing down fossil fuels is crucial for climate mitigation. Even though 80-90% of fossil fuels are used to provide energy, their use as feedstock to produce plastics, fertilizers, and chemicals, is associated with substantial CO2 emissions. However, our understanding of hard-to-abate chemical production remains limited. Here we developed a chemical process-based material flow model to investigate the non-energy use of fossil fuels and CO2 emissions in China. Results show in 2017, the chemical industry used 0.18 Gt of coal, 88.8 Mt of crude oil, and 12.9 Mt of natural gas as feedstock, constituting 5%, 15%, and 7% of China's respective total use. Coal-fed production of methanol, ammonia, and PVCs contributes to 0.27 Gt CO2 emissions ( ~ 3% of China's emissions). As China seeks to balance high CO2 emissions of coal-fed production with import dependence on oil and gas, improving energy efficiency and coupling green hydrogen emerges as attractive alternatives for decarbonization.

Published
2024
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36. ANALYZING THE IMPACT OF ACUPUNCTURE IN CONJUNCTION WITH A QUANTUM LIPID-LOWERING DEVICE ON HYPERLIPIDEMIC RATS: INSIGHTS INTO ADENOSINE MONOPHOSPHATE-ACTIVATED PROTEIN KINASE SIGNALING, BLOOD LIPIDS, AND GUT MICROBIOTA.

Author

YAN, X., MU, K.-J., WEN, Q., BIAN, J., YANG, D., GAO, W.-N., and ZHAN, W.-M.

Subjects
BLOOD lipids, GUT microbiome, QUANTUM groups, PROTEIN kinases, RATS, ACUPUNCTURE, ACUPUNCTURE points, FECAL microbiota transplantation
Abstract

We explored the impact of acupuncture (ACUP) in conjunction with a quantum lipid-lowering device (Quantum) on the blood lipids and gut microbiota in hyperlipidemic rats, focusing on the adenosine monophosphate- (AMP)-activated protein kinase (AMPK) signaling pathway. Fifty Sprague-Dawley rats were randomly allocated into five groups: Normal, Model, Acup + Quantum, Acup, and Quantum. Hyperlipidemic models were established in all groups except Normal. The Model group did not receive any intervention after modeling. The Acup + Quantum group received both treatments, the Acup group received only acupuncture, and the Quantum group received only the quantum lipid-lowering device. We used ELISA to measure serum lipid and liver enzyme levels, hematoxylin and eosin (HE) staining for liver pathology, Western blot for protein expression, and 16S rRNA sequencing to analyze intestinal microbiota diversity in rats. Elisa results showed that compared with the model group, Acup + Quantum group could reduce the levels of total cholesterol (TC), triglycerides (TG), low-density lipoprotein-cholesterol (LDL-C), aspartate transaminase (AST) and aspartate transaminase (ALT) in rats with hyperlipidemia (P<0.01), and increase the level of high-density lipoprotein-cholesterol (HDL-C) (P<0.01). HE staining results showed that compared with the model group, the hepatocytes of rats in the Acup + Quantum group looked round and full, the liver plates were arranged regularly and neatly, and there was no obvious abnormality in the liver sinusoids. Western blot results showed that compared with the model group, the Acup + Quantum group inhibited AMPK activation, increased P-AMPK/AMPK protein expression (P<0.05), and decreased phospho-acetyl-CoA carboxylases (P-ACC/ACC), Sterol regulatory element-binding transcription factor-1C (SREBP-1C), and FAS protein expression (P<0.05; P<0.01; P<0.01), which resulted in lipid-lowering effect. The results of intestinal flora showed that Acup + Quantum group improved the intestinal microbial microenvironment of hyperlipidemic rats by regulating the structure of intestinal microflora, increasing the abundance of Firmicutes flora, and decreasing the abundance of harmful bacteria, such as Bacteroidetes and Proteobacteria. Acupuncture combined with quantum lipid-lowering device can improve the blood lipid and liver function levels and regulate the intestinal microbial microenvironment of hyperlipidemic rats. This therapeutic outcome is likely achieved through the activation of the AMPK pathway and the beneficial modulation of the intestinal microbiota of rats. [ABSTRACT FROM AUTHOR]

Published
2024
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40. Clinically feasible NODDI characterization of glioma using multiband EPI at 7 T

Author

Chang, Susan, Hess, Christopher, Wen, Q, Kelley, DAC, Banerjee, S, Lupo, JM, Chang, SM, Xu, D, Hess, CP, and Nelson, SJ

Abstract

© 2015 Published by Elsevier Inc.Recent technological progress in the multiband echo planer imaging (MB EPI) technique enables accelerated MR diffusion weighted imaging (DWI) and allows whole brain, multi-b-value diffusion imaging to be acquired within a c

Published
2015

41. Association of diffusion and anatomic imaging parameters with survival for patients with newly diagnosed glioblastoma participating in two different clinical trials

Author

Chang, Susan, Molinaro, Annette, Nelson, Sarah, Wen, Q, Jalilian, L, Lupo, JM, Li, Y, Roy, R, Molinaro, AM, Chang, SM, Prados, M, Butowski, N, and Clarke, J

Abstract

© 2015 The Authors. Published by Elsevier Inc.PURPOSE: To evaluate the time course and association with survival of anatomic lesion volumes and diffusion imaging parameters for patients with newly diagnosed glioblastoma who were treated with radiation and

Published
2015

42. Observation of a charged charmoniumlike structure Z_c(4020) and search for the Z_c(3900) in e+e- to pi+pi-h_c

Author

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

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We study e+e- --> pi+pi-h_c at center-of-mass energies from 3.90 GeV to 4.42 GeV using data samples collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross sections are measured at 13 energies, and are found to be of the same order of magnitude as those of e+e- --> pi+pi-J/psi but with a different line shape. In the \pi^\pm h_c mass spectrum, a distinct structure, referred to as Z_c(4020), is observed at 4.02 GeV/c^2. The Z_c(4020) carries an electric charge and couples to charmonium. A fit to the \pi^\pm h_c invariant mass spectrum, neglecting possible interferences, results in a mass of (4022.9\pm 0.8\pm 2.7) MeV/c^2 and a width of (7.9\pm 2.7\pm 2.6) MeV for the Z_c(4020), where the first errors are statistical and the second systematic. No significant Z_c(3900) signal is observed, and upper limits on the Z_c(3900) production cross sections in \pi^\pm h_c at center-of-mass energies of 4.23 and 4.26 GeV are set., Comment: A short version published in Phys. Rev. Lett. (version 1 is longer and has more plots and numbers)

Published
2013
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43. Observation of a charged charmoniumlike structure in $e^+e^- \to (D^{*} \bar{D}^{*})^{\pm} \pi^\mp$ at $\sqrt{s}=4.26$GeV

Author

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

Subjects
High Energy Physics - Experiment, High Energy Physics - Lattice, High Energy Physics - Phenomenology
Abstract

We study the process $e^+e^- \to (D^{*} \bar{D}^{*})^{\pm} \pi^\mp$ at a center-of-mass energy of 4.26GeV using a 827pb$^{-1}$ data sample obtained with the BESIII detector at the Beijing Electron Positron Collider. Based on a partial reconstruction technique, the Born cross section is measured to be $(137\pm9\pm15)$pb. We observe a structure near the $(D^{*} \bar{D}^{*})^{\pm}$ threshold in the $\pi^\mp$ recoil mass spectrum, which we denote as the $Z^{\pm}_c(4025)$. The measured mass and width of the structure are $(4026.3\pm2.6\pm3.7)$MeV/c$^2$ and $(24.8\pm5.6\pm7.7)$MeV, respectively. Its production ratio $\frac{\sigma(e^+e^-\to Z^{\pm}_c(4025)\pi^\mp \to (D^{*} \bar{D}^{*})^{\pm} \pi^\mp)}{\sigma(e^+e^-\to (D^{*} \bar{D}^{*})^{\pm} \pi^\mp)}$ is determined to be $0.65\pm0.09\pm0.06$. The first uncertainties are statistical and the second are systematic., Comment: 7 pages, 4 figures, 1 table; version accepted to be published in PRL

Published
2013
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44. Precision Measurements of ${\cal B}[\psi(3686) \to \pi^+\pi^- J/\psi]$ and ${\cal B}[J/\psi\to l^+l^-]$

Author

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

Subjects
High Energy Physics - Experiment
Abstract

Based on $(106.41 \pm 0.86)\times 10^{6}$ $\psi(3686)$ events collected with the BESIII detector at the BEPCII collider, the branching fractions of $\psi(3686) \to \pi^+\pi^- J/\psi$, $J/\psi \to e^+e^- $, and $J/\psi \to \mu^+\mu^-$ are measured. We obtain ${\cal B}[\psi(3686) \to \pi^+\pi^-J/\psi]=(34.98\pm 0.02\pm 0.45)%$, ${\cal B}[J/\psi \to e^+e^-] = (5.983 \pm 0.007 \pm 0.037)%$ and ${\cal B}[J/\psi \to \mu^+\mu^-] = (5.973 \pm 0.007 \pm 0.038)%$. The measurement of ${\cal B}[\psi(3686) \to \pi^{+}\pi^{-}J/\psi]$ confirms the CLEO-c measurement, and is apparently larger than the others. The measured $J/\psi$ leptonic decay branching fractions agree with previous experiments within one standard deviation. These results lead to ${\cal B}[J/\psi \to l^+l^-] = (5.978 \pm 0.005 \pm 0.040)%$ by averaging over the $e^{+}e^{-}$ and $\mu^{+}\mu^{-}$ channels and a ratio of ${\cal B}[J/\psi \to e^+e^-] / {\cal B}[J/\psi \to \mu^+\mu^-] = 1.0017 \pm 0.0017 \pm 0.0033$, which tests $e$-$\mu$ universality at the four tenths of a percent level. All the measurements presented in this paper are the most precise in the world to date., Comment: 13 pages, 6 figures; To be submitted to PRD

Published
2013
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45. Observation of a structure at 1.84 GeV/c$^2$ in the $3(\pi^+\pi^-)$ mass spectrum in $J/\psi\rightarrow \gamma 3(\pi^+\pi^-)$ decays

Author

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

Subjects
High Energy Physics - Experiment
Abstract

With a sample of 225.3 million $J/\psi$ events taken with the BESIII detector, the decay $J/\psi\rightarrow \gamma 3(\pi^+\pi^-)$ is analyzed. A structure at 1.84 GeV/c$^2$ is observed in the $3(\pi^+\pi^-)$ invariant mass spectrum with a statistical significance of 7.6$\sigma$ . The mass and width are measured to be $M=1842.2\pm 4.2^{+7.1}_{-2.6}$ MeV/c$^2$ and $\Gamma=83\pm 14 \pm 11$ MeV. The product branching fraction is determined to be $B(J/\psi\rightarrow\gamma X(1840))\times B(X(1840)\rightarrow 3(\pi^+\pi^-))=(2.44\pm0.36^{+0.60}_{-0.74})\times 10^{-5}$. No $\eta^\prime$ signals are observed in the $3(\pi^+\pi^-)$ invariant mass spectrum, and the upper limit of the branching fraction for the decay $\eta^\prime\rightarrow 3(\pi^+\pi^-)$ is set to be $3.1\times10^{-5}$ at a 90% confidence level., Comment: 6 pages, 3 figures, minor changes, to be appeared in journal

Published
2013
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46. Search for Baryonic Decays of \psi(3770) and \psi(4040)

Author

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

Subjects
High Energy Physics - Experiment
Abstract

By analyzing data samples of 2.9 fb^{-1} collected at \sqrt s=3.773 GeV, 482 pb^{-1} collected at \sqrt s=4.009 GeV and 67 pb^{-1} collected at \sqrt s=3.542, 3.554, 3.561, 3.600 and 3.650 GeV with the BESIII detector at the BEPCII storage ring, we search for \psi(3770) and \psi(4040) decay to baryonic final states, including \Lambda\bar\Lambda\pi^+\pi^-, \Lambda \bar\Lambda\pi^0, \Lambda\bar\Lambda\eta, \Sigma^+ \bar\Sigma^-, \Sigma^0 \bar\Sigma^0, \Xi^-\bar\Xi^+ and \Xi^0\bar\Xi^0 decays. None are observed, and upper limits are set at the 90% confidence level., Comment: 9 pages, 3 figures

Published
2013
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47. Search for the Lepton Flavor Violation Process $J/\psi \to e\mu$ at BESIII

Author

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

Subjects
High Energy Physics - Experiment
Abstract

We search for the lepton-flavor-violating decay of the $J/\psi$ into an electron and a muon using $(225.3\pm2.8)\times 10^{6}$ $J/\psi$ events collected with the BESIII detector at the BEPCII collider. Four candidate events are found in the signal region, consistent with background expectations. An upper limit on the branching fraction of $\mathcal{B}(J/\psi \to e\mu)< 1.5 \times 10^{-7}$ (90% C.L.) is obtained.

Published
2013
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48. Partial wave analysis of $\psi(2S) \to p \bar{p}\eta$

Author

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

Subjects
High Energy Physics - Experiment
Abstract

Using a sample of $1.06 \times 10^{8}$ $\psi(2S)$ events collected with the BESIII detector at BEPCII, the decay $\psi(2S) \to p \bar{p}\eta$ is studied. A partial wave analysis determines that the intermediate state N(1535) with a mass of $1524\pm5^{+10}_{-4}$ MeV/$c^2$ and a width of $130^{+27+57}_{-24-10}$ MeV/$c^2$ is dominant in the decay; the product branching fraction is determined to be $B(\psi(2S) \to N(1535)\bar{p})\times B(N(1535)\to p\eta)+c.c. = (5.2\pm0.3^{+3.2}_{-1.2})\times 10^{-5}$. Furthermore, the branching fraction of $\psi(2S) \to \eta p \bar{p}$ is measured to be $(6.4\pm0.2\pm0.6)\times 10^{-5}$.

Published
2013
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49. Measurement of $\eta^\prime\rightarrow \pi^+\pi^- e^+e^-$ and $\eta^\prime\rightarrow \pi^+\pi^-\mu^+\mu^-$

Author

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

Subjects
High Energy Physics - Experiment
Abstract

Based on a sample of 225.3 million J/\psi events accumulated with the BESIII detector at the BEPCII, the decays of \eta' to pi+pi-l+l- are studied via J/\psi to \gamma\eta'. A clear \eta' signal is observed in the pi+pi-e+e- mass spectrum, and the branching fraction is measured to be \BR(\eta' to pi+pi-e+e-) = (2.11\pm0.12 (stat.)\pm0.15 (syst.))\times10^{-3}, which is in good agreement with theoretical predictions and the previous measurement, but is determined with much higher precision. No \eta' signal is found in the pi+ pi- mu+ mu- mass spectrum, and the upper limit is determined to be \BR(\eta' to pi+ pi- mu+ mu-)<2.9\times10^{-5} at the 90% confidence level., Comment: 7 pages, 7 figures

Published
2013
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50. Observation of a charged charmoniumlike structure in e+e- to pi+pi-J/psi at \sqrt{s}=4.26 GeV

Author

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

Subjects
High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

We study the process e+e- to pi+pi-J/psi at a center-of-mass energy of 4.260 GeV using a 525 pb^{-1} data sample collected with the BESIII detector operating at the Beijing Electron Positron Collider. The Born cross section is measured to be (62.9\pm 1.9\pm 3.7) pb, consistent with the production of the Y(4260). We observe a structure at around 3.9 GeV/c^2 in the \pi^\pm J/psi mass spectrum, which we refer to as the Z_c(3900). If interpreted as a new particle, it is unusual in that it carries an electric charge and couples to charmonium. A fit to the \pi^\pm J/psi invariant mass spectrum, neglecting interference, results in a mass of (3899.0\pm 3.6\pm 4.9) MeV/c^2 and a width of (46\pm 10\pm 20) MeV. Its production ratio is measured to be R=\frac{\sigma(e+e- to \pi^\pm Z_c(3900)^\mp to pi+pi-J/psi))} {\sigma(e+e- to pi+pi-J/psi)}=(21.5\pm 3.3\pm 7.5)%. In all measurements the first errors are statistical and the second are systematic., Comment: 7 pages, 4 figures. Version appears in PRL

Published
2013
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