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1. Dissolved methane in the East China Sea: Distribution, seasonal variation and emission

Author

J. Li, Guiling Zhang, X. Ma, Sumei Liu, X.-P. Cao, Mingshuang Sun, W.-W. Ye, and X.-Y. Mao

Subjects
0106 biological sciences, Seasonally adjusted annual rate, geography, Water mass, geography.geographical_feature_category, 010504 meteorology & atmospheric sciences, Continental shelf, 010604 marine biology & hydrobiology, Flux, Estuary, General Chemistry, Oceanography, 01 natural sciences, Bottom water, Water column, Environmental Chemistry, Environmental science, Seawater, 0105 earth and related environmental sciences, Water Science and Technology
Abstract

We present a dataset of dissolved methane (CH4) in the East China Sea (ECS) during five cruises in March, May, August, October and December 2011. CH4 distribution in this region showed pronounced spatial and seasonal variability due to the complex mixing of different water masses and other variables. Surface CH4 concentrations gradually decreased from the coast to the open sea, with maximum values occurring near Changjiang estuary or outside the Hangzhou Bay. The annual mean CH4 concentration of the surface layer was 9.1 ± 1.6 nmol L-1 in the coastal area, which was nearly twice as large as that in the open sea (4.3 ± 1.3 nmol L-1). CH4 was distributed evenly from the surface to the bottom in the shelf region during March and December, while it increased gradually with depth during May and October. CH4 depth profiles exhibited various distribution features along the coast, in the middle and on the edge of continental shelf. CH4 levels at the bottom were generally higher than at the surface during all seasons, indicating obvious CH4 sources from sediments. Incubation experiments of sediment cores onboard suggested that sediment release was an important source of CH4 in the water column of the ECS. We estimated that the annual average CH4 release rate from sediments was about 1.11 μmol·m-2·d-1 on the continental shelf of the ECS. The maximum CH4 concentration and sediment-water CH4 flux both occurred in summer, which might be related with the occurrence of hypoxia in the bottom water. Surface seawater of the ECS was oversaturated with CH4 relative to the atmosphere over most of the five cruises, indicating that the ECS was a net source of atmospheric CH4. The annual mean area-weighted sea-air flux density of CH4 in the ECS was estimated to be about 10.7 μmol·m-2·d-1 in 2011. Accordingly, an area-weighted, seasonally adjusted annual rate of CH4 efflux was determined to be 2.98 × 109 mol yr-1 (∼0.05 Tg CH4 yr-1) from the ECS to the atmosphere.

Published
2018
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3. [Some viewpoints about the local surgery on the de novo stage Ⅳ breast cancer]

Author

X Y, Mao, H H, Li, and F, Jin

Subjects
Humans, Breast Neoplasms, Neoplasm Staging
Abstract

乳腺癌是目前危及女性健康的最常见的恶性肿瘤，大约5%~10%的乳腺癌患者初诊时即为转移性乳腺癌。晚期转移性乳腺癌是不可治愈的疾病，治疗目的在于缓解和控制症状、提高生活质量，综合治疗是基石，外科局部治疗有争议。本文通过复习文献探讨初治转移性乳腺癌原发灶手术与否，什么条件实施手术等热点问题进行了综述。.

Published
2019

5. Corrosion Mechanism and Corrosion State Detection Method of the Grounding Grid

Author

X. Y. Mao, Y. C. Liu, Y. Y. Wu, Y. Xing, J. R. Wu, H. Huang, and M. F. Peng

Subjects
Materials science, Grounding grid, Nuclear engineering, State (computer science), Mechanism (sociology), Corrosion
Abstract

Corrosion of grounding grids can affect the safe and reliable operation of power systems. In view of the corrosion problem of the grounding grid, this paper introduces the corrosion mechanism, which is chemical corrosion and electrochemical corrosion respectively. Then, three common grounding grid corrosion detection methods, such as electric network analysis method, electromagnetic field detection method and electrochemical method, are introduced. On this basis, the advantages and disadvantages of three methods are compared. Further prospects for the corrosion detection technology of the grounding grid are pointed out.

Published
2019
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6. Simplified approach for evaluating residual strength of fire-exposed reinforced concrete columns

Author

Wasim Khaliq, X. Y. Mao, Venkatesh Kodur, and Nikhil Raut

Subjects
Polypropylene, Maximum temperature, Materials science, business.industry, Building and Construction, Structural engineering, Reinforced concrete column, Reinforced concrete, Load carrying, Rc columns, Residual strength, chemistry.chemical_compound, chemistry, Mechanics of Materials, Solid mechanics, General Materials Science, Geotechnical engineering, business, Civil and Structural Engineering
Abstract

An approach for evaluating residual strength of reinforced concrete (RC) columns is presented in this paper. The approach is based on the maximum temperature attained in the concrete core and rebars, and associated reduction in strength of steel and concrete. For validating the proposed approach, post-fire residual strength tests were carried out on five high strength concrete columns. The test variables included type of concrete, presence of fibers (polypropylene and/or steel) in concrete and load ratio. The columns were loaded and exposed to a design fire, allowed to cool, and then residual strength tests were carried out. Results from these fire tests indicate that high strength concrete columns retain most of their room-temperature load carrying capacity after exposure to a design fire. A comparison of residual strength predictions with measured values from tests indicates that the proposed approach is capable of predicting the residual strength of fire-exposed RC columns.

Published
2013
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7. Identifying the role of PTPN12 expression in predicting the efficacy of capecitabine to neoadjuvant chemotherapy in breast cancer treatment

Author

Y-Y, Wang, H, Liu, X-Y, Mao, F, Jin, B, Ma, J-Y, Jiang, and Y, Cao

Subjects
Protein Tyrosine Phosphatase, Non-Receptor Type 12, Humans, Breast Neoplasms, Capecitabine, Neoadjuvant Therapy
Abstract

The aim of this study was to investigate the expression of PTPN12 in human breast cancer and its role in predicting the efficacy of neoadjuvant chemotherapy (NACT) for breast cancer.The PTPN12 expression levels were assessed by immunohistochemical staining in 114 breast cancer patients. The correlation of PTPN12 with clinicopathological features was also analyzed. Multivariate logistic regression was used to explore the effect of PTPN12 expression in predicting clinical response.We observed a significant association of PTPN12 expression with cTNM classification. The overall pathological complete response (pCR) rate was 23.2 % in high PTPN12 expression group, whereas it was 5.2% in low PTPN12 expression group. The multivariate regression analyses further indicated that clinical response correlated with PTPN12 expression level and cycles of NACT, and CEX regimen was associated with the overall pathological complete response. In addition, Spearman rank correlation analyses suggested that higher PTPN12 expression indicated better clinical response in breast cancer patients. Furthermore, PTPN12 expression statistically related with pathological response in TNBC and Luminal B subtypes, as assessed by Pearson Chi-square test or Fisher's exact test.Our study informed that cTNM classification is an independent risk factor for PTPN12 expression and PTPN12 is an independent predictor to clinical remission.

Published
2016

8. Nanoscale ripples on the compressive fracture surface of a bulk metallic glass with microscale crystals

Author

Lei Zhang, W. Z. Liang, X. Y. Mao, Hailing Yu, and Lupeng Wu

Subjects
Amorphous metal, Materials science, Mechanical Engineering, Instability, Rod, Metal, Mechanics of Materials, visual_art, Solid mechanics, visual_art.visual_art_medium, Fracture (geology), General Materials Science, Composite material, Nanoscopic scale, Microscale chemistry
Abstract

Some periodic and straight strips with about 60 nm spacing were observed on the compressive fracture surface of Ni42Cu5Ti20Zr21.5Al8Si3.5 bulk metallic glass (BMG) rods containing minor microscale crystals. The characteristic difference between amorphous matrix and microscale crystals also reveal why periodic corrugations could not be observed on the fracture surface of metal crystals. The dynamic crack instability may be explained by the interaction of the propagating crack and the internal micro-cracks. This kind of periodic morphologies showed in-plane feature, which may be attributed to the non-intense interaction between dynamic crack and micro-crack.

Published
2009
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9. Methane distribution, flux, and budget in the East China Sea and Yellow Sea

Author

X.-Y. Mao, Mingshuang Sun, X.-P. Cao, Wangwang Ye, J. Li, and Guiling Zhang

Subjects
Water mass, geography, geography.geographical_feature_category, Hypoxia (environmental), Estuary, Methane, Sink (geography), chemistry.chemical_compound, Oceanography, Water column, Flux (metallurgy), chemistry, Environmental science, Bay
Abstract

We measured dissolved methane (CH4) concentrations, saturations, and fluxes from sea into air and from sediment into water during cruises in March, May, August, October, and December of 2011 in the East China Sea (ECS) and the Yellow Sea (YS). CH4 concentrations had obvious spatial and seasonal variability due to the complex effects of different water masses and other variables. Maximal CH4 concentration, sea–air and sediment–water fluxes all occurred during the summer. CH4 concentration decreased gradually from the coastal area to the open sea, and high levels of CH4 generally appeared near the Changjiang Estuary and outside the Hangzhou Bay. During early spring and winter, CH4 had a uniform distribution from the surface to the bottom, but CH4 concentration increased gradually with depth during other seasons. The subsurface CH4 maximum occurred at a depth of about 200 m during May, October, and December. The CH4 level at the bottom was generally higher than at the surface, and this was enhanced during summer due to hypoxia in the bottom waters. Changjiang-diluted water, the Kuroshio Current, and the Taiwan Warm Current Water affected the geographic distribution of CH4 in the ECS, and these water bodies contributed about 3.45, 2.97, 14.60 mol s−1 of CH4 during summer and 2.11, 8.58, 5.20 mol s−1 CH4 during winter, respectively. Sediment was also a significant source of dissolved CH4 in the ECS, and we estimated the average sediment–water CH4 flux of the ECS and YS as about 1.02 μmol m−2 d−1. We also used a box model to calculate the CH4 budget in the ECS. The results suggested that in situ CH4 production in the water column was the major source of CH4, and accounted for 0.21 μmol m−3 day−1 during summer and 0.11 μmol m−3 day−1 during winter. Air–sea exchange was the major sink of CH4 in the ECS. We estimated total CH4 emission from the ECS and YS as about 4.45 x 109 mol during 2011. Our results indicated that the ECS and YS were active areas for CH4 production and emission.

Published
2015
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11. INAA study for characterization of PM10 and PM2.5 in Beijing and influence of dust storm

Author

Zhifang Chai, Y. Song, H. Ouyang, D. D. Xu, X. Y. Mao, and Weiyue Feng

Subjects
geography, geography.geographical_feature_category, Health, Toxicology and Mutagenesis, Public Health, Environmental and Occupational Health, Crust, Pollution, Analytical Chemistry, Anthropogenic pollution, Nuclear Energy and Engineering, Beijing, Dust storm, Coal burning, Environmental chemistry, Spring (hydrology), Radiology, Nuclear Medicine and imaging, Spectroscopy
Abstract

PM10 and PM2.5 samples were collected simultaneously in Beijing, China, and analyzed by INAA and ICP-MS. Seasonal variations of the concentrations of ambient particles and their elemental compositions were found. The main sources of PM10 and PM2.5 in spring were the crust, coal burning and vehicle exhaust, in which the former was significant. During a strong dust storm, the concentrations of the crustal elements in PM10 and PM2.5 increased remarkably, but the concentrations of some anthropogenic elements decreased. The enrichment factors of these anthropogenic elements also decreased sharply during the dust storm, which indicated that they were mostly originated from local anthropogenic pollution and diluted by the huge amount of dust.

Published
2006
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12. The effect and mechanism of improved efficiency of physicochemical pro-release treatment for low grade phosphate rock

Author

X.-y Mao, J Wang, Xuliang Chen, G.-h Wang, Z.-w Liao, and L. Huang

Subjects
Phosphorus, Inorganic chemistry, Extraction (chemistry), Soil Science, chemistry.chemical_element, mechanism, Physicochemical pro-release treatment, molecular structure, Plant Science, engineering.material, Phosphate, phosphorus composition, chemistry.chemical_compound, chemistry, Phosphorite, Diammonium phosphate, engineering, Fertilizer, Phosphorus utilization, Agronomy and Crop Science, Plant nutrition, Nuclear chemistry
Abstract

With the increasingly acute contradictions between shortage of bonanza phosphorus resources and phosphate fertilizer demands, to develop an efficient use technology for low-grade phosphate rocks (LGPR) was an inevitable choice. In this study, the physicochemical pro-release phosphate rock (PCPR) was prepared by adding modified lignin during the process of ultra-fine grinding LGPR. The relationship between phosphorus chemical composition of PCPR, molecular structure and fertilizer efficiency was explored by chemical analysis, spectral analysis and pot experiment. The results showed that after pro-release treatment of phosphate rock (PR), available phosphorus, reactive phosphorus and soluble phosphorus levels were significantly increased compared with PR. The available phosphorus content increased by 40%, the reactive phosphorus content increased more than 3.5 times, and 6 consecutive extraction soluble phosphorus accumulation increased by 24 times. The structure of the PR showed the pro-release processing would significantly increase particle fineness and specific surface area of PR , strengthen the characteristic absorption peak intensity of PO4(3-), HPO4(2-), replace the Cl-, F-, Fe²+ in the apatite and change the phase composition of PR. Pot experiment results showed corn biomass and phosphorus utilization processed by the PCPR were much higher than superphosphate (SP), diammonium phosphate(DAP), and significantly improve soil phosphorus content. The high soluble phosphorus and active phosphorus in PCPR providing the moderate continuous phosphorus supply intensity was the main reason for its high bioavailability. The combination of a static extraction and continuous extraction of reactive phosphorus and soluble phosphorus was an appropriate evaluation of physicochemical pro-release effect.

Published
2014

13. A Mechanical Investigation on the Phase Transition Behavior of La0.7Ca0.3MnO3—δ Ceramics

Author

C. M. Fu, H. M. Duh, X. B. Chen, W. S. Gao, X. Y. Mao, Juehua Zhu, G. H. Hwang, C. H. Lin, and Y.N. Wang

Subjects
Phase transition, Magnetization, Paramagnetism, Electrical resistance and conductance, Ferromagnetism, Transition point, Condensed matter physics, Chemistry, Mineralogy, Giant magnetoresistance, Condensed Matter Physics, Magnetic susceptibility, Electronic, Optical and Magnetic Materials
Abstract

The characteristics of the phase transition of polycrystalline La 0.70 Ca 0.30 MnO 3-δ (LCMO) was investigated by using the vibrating reed method. The internal friction (Q -1 ) of the sample shows two peaks: P 1 and P2. The first internal friction peak, P 1 , appears in heating up and cooling down indicative of a paramagnetic to ferromagnetic phase transition with a considerable resonant frequency drop at the transition point. The second broader internal friction peak, P 2 , appears only in heating up and its corresponding frequency (f) exibits a maximum. Additionally, the P 1 temperature was found to be linked with a thermal absorption peak and a variation of the magnetization and the electric resistance.

Published
1999
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14. Lattice dynamics of doped barium titanate

Author

Zhen Yin, Qiang Chen, Ming-Sheng Zhang, X. Y. Mao, W. S. Gao, and X. B. Chen

Subjects
Lattice dynamics, Materials science, Doping, Analytical chemistry, Electron, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, symbols.namesake, chemistry, Cu doping, Barium titanate, symbols, Raman spectroscopy
Abstract

Raman spectra of barium titanate doped with Pb, Ca, Y, Cu and Nb are examined and all the Raman lines are assigned. The electron structures of all the doping elements are analysed. The off-centre effects caused by Pb and Cu doping and homovalent and heterovalent effects are discussed.

Published
1996
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15. Study of distribution and absorption of a new type calcium supplement in rabbit by47Ca radioactive tracer technique

Author

Z. L. Liu, H. B. Fu, X. Y. Mao, F. Q. Chang, C. R. Wang, F. G. Zhang, and C. F. Chai

Subjects
Absorption (pharmacology), Radioactive tracer, Isotope, Chemistry, Health, Toxicology and Mutagenesis, Radiochemistry, Public Health, Environmental and Occupational Health, chemistry.chemical_element, Rabbit (nuclear engineering), Calcium, Pollution, Analytical Chemistry, Bioavailability, law.invention, Isotopes of calcium, Nuclear Energy and Engineering, Oral administration, law, Radiology, Nuclear Medicine and imaging, Spectroscopy, Nuclear chemistry
Abstract

Ca-47 radioactive tracer was used to determine the phamocodynamics, distribution pattern, absorption and bioavailability of a new type calcium supplement in rabbit prepared by plasma technology. Our results indicate that calcium from the new nutrient is mainly deposited in bone 6 or 7 days after oral administration. The absorption rate of this new calcium preparation is estimated to be 30-40%.

Published
1996
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16. The changes of serum proteome and tissular pathology in mouse induced by botulinum toxin E injection

Author

X. Y. Mao, J. F. Wang, and C. Zhao

Subjects
Proteomics, Pathology, medicine.medical_specialty, Botulinum Toxins, Proteome, medicine.medical_treatment, Intraperitoneal injection, Kidney, Mice, Genetics, medicine, Animals, Botulism, Serum amyloid A, Molecular Biology, Lung, Gel electrophoresis, biology, Myocardium, Haptoglobin, Heart, General Medicine, Blood Proteins, medicine.disease, Botulinum toxin, Blood proteins, Liver, biology.protein, Spleen, medicine.drug
Abstract

The experiment were performed to investigate the poisoning-related proteins and main pathological changes after mouse suffered from injection of botulinum toxin serotype E. Dose of 0.75 LD50 botulinum toxin serotype E per mice were administrated by intraperitoneal injection. Survival mouse were picked as experimental group. The blood were collected from orbital blood and serum sample was separated by centrifugation. The heart, liver, spleen, lung, kidney were fixed in 10 % neutral buffered formalin and then developed paraffin sections. Serum protein components were analyzed by SDS-PAGE gel electrophoresis coupled with 2-DE SDS-PAGE gel electrophoresis. Differentially expressed proteins were analyzed by PDQUest8.0 software and subjected to ion trap mass spectrometry equipped with a high performance liquid chromatography system. The observation of pathological section showed that heart, liver, spleen, lung, kidney exhibited pathological changes in different degree, especially in heart, liver and lung tissues. Heart muscle tissue display serious inflammatory response, heart muscle fiber compulsively expanded and filled with erythrocyte and inflammatory exudates, some heart muscle fiber ruptured, even necrosis; hepatic cell in edge of liver occur apoptosis and some hepatic cell have disintegrated, and even died; pulmonary alveoli broken and partial vein filled with blood. Serum proteins component present a significant changes between control serum and botulism in 24 h by SDS-PAGE gel electrophoresis and 2-DE-SDS-PAGE gel electrophoresis. Twenty differentially expressed protein spots were observed in 2-DE profiles, in which 14 protein spots were undetectable in serum proteome under botulism, 3 protein spots exclusively expressed in state of botulism, 3 protein spots were low-expressed in serum proteome under botulism. Fourteen proteins have been identified among 20 spots elected on two-dimensional electrophoresis gels. Crystal proteins family exclusively expressed in control group serum. Haptoglobin were low-expressed under botulism in serum protein components, however, serum amyloid A only expressed in serum sample under botulism in 24 h, which were verified by Western-blot. Identified proteins involved in energy metabolism, cellular stress response, transcription, body defense and cell proliferation. These findings represent the first report of BoNT-induced changes in serum proteome and histopathology, and reinforce the utility of applying proteomic tools to the study of system-wide biological processes in normal and botulism.

Published
2012

17. ATP13A2 G2236A variant is rare in patients with early-onset Parkinson's disease and familial Parkinson's disease from Mainland China

Author

X.-Y. Mao, J.-M. Burgunder, Z.-J. Zhang, X.-L. Chang, R. Peng, Y. Yang, Y.-C. Wang, and T. Li

Subjects
Mainland China, Pediatrics, medicine.medical_specialty, China, Parkinson's disease, Alanine, business.industry, DNA Mutational Analysis, Early onset Parkinson's disease, Glycine, Parkinson Disease, medicine.disease, Polymorphism, Single Nucleotide, Proton-Translocating ATPases, Neurology, medicine, Humans, In patient, Neurology (clinical), Geriatrics and Gerontology, Age of Onset, business
Published
2009

18. Chemical composition of T-21 silica tubing and implications for neutron activation analysis

Author

B. D. Keck, Lawrence Grossman, Brian Ward, and X. Y. Mao

Subjects
Health, Toxicology and Mutagenesis, Public Health, Environmental and Occupational Health, Pollution, Analytical Chemistry, chemistry.chemical_compound, Nuclear Energy and Engineering, chemistry, Impurity, Chondrite, Reagent, Aqua regia, Radiology, Nuclear Medicine and imaging, Irradiation, Neutron activation analysis, Chemical composition, Spectroscopy, Neutron activation, Nuclear chemistry
Abstract

T-21 silica, a commonly used encapsulation material in neutron activation analysis of small samples, was analyzed by INAA to determine trace levels of the following impurities: Na, Sc, Cr, Fe, Co, Ni, Zn, Br, Sb, La, Ce, Sm, Tb, Hf and Au. In the unprocessed form supplied by the manufacturer, pieces of T-21 weighing 50 mg contain ∼6·10−2 μg Na; ∼9·10−3 μg Fe; ∼3·10−7–7·10−6 μg light REE, Sc and Hf and ∼4·10−8 μg Tb and Au. In a series of glass-blowing steps, in which unfiltered gases were used for fuel, and cleaning steps, in which reagent grade aqua regia was used, irradiation vials were produced which contain higher average levels of Sc, La, Sm, Tb and Hf, by factors ranging from 1.3 for Sm to 11.5 for La, and lower average levels of Co, Na and Fe, by factors of 1.4, 2.0 and 4.0, respectively, than the unprocessed material. These contamination levels lead to blank corrections of 21% for La, 2.6% for Ce and 3.0% for Hf in 40 μg samples of refractory inclusions from carbonaceous chondrites, if counted in their irradiation vials.

Published
1991
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19. Lack of evidence for association of a UCH-L1 S18Y polymorphism with Parkinson's disease in a Han-Chinese population

Author

Rong Peng, X.-K. An, W.-J. Chen, G.-G. Yuan, Jin-Hong Zhang, X.-Y. Mao, Yingcheng Wang, Zhichao Zhang, Jean-Marc Burgunder, Yuejing Wu, Y.-R. Gou, and Yanming Xu

Subjects
Adult, Male, Pathology, medicine.medical_specialty, Parkinson's disease, Population, Disease, Polymorphism, Single Nucleotide, Degenerative disease, Asian People, Polymorphism (computer science), medicine, Humans, Genetic Predisposition to Disease, Allele, education, Aged, Genetics, Aged, 80 and over, education.field_of_study, business.industry, Reverse Transcriptase Polymerase Chain Reaction, General Neuroscience, Parkinson Disease, Middle Aged, medicine.disease, Genotype frequency, Case-Control Studies, Female, Gene polymorphism, business, Ubiquitin Thiolesterase
Abstract

Mutation in UCH-L1 has been reported as a rare cause of autosomal dominant Parkinson's disease (PD). A S18Y polymorphism in the same gene has been associated with sporadic PD. We investigated the frequency of this polymorphism among the Han-Chinese ethnic population in a case–control study. A total of 600 patients with PD and 334 unrelated healthy controls were genotyped using PCR-restriction fragment length polymorphism analysis. We did not observe any difference in allele or genotype frequencies between the cases and the controls ( P > 0.05). Our results do not support a role for this variant in sporadic PD.

Published
2008

20. Delayed cytotoxicity of 6-mercaptopurine is compatible with mitotic death caused by DNA damage due to incorporation of 6-thioguanine into DNA as 6-thioguanine nucleotide

Author

H, Inamochi, M, Higashigawa, Y, Shimono, T, Nagata, D C, Cao, X Y, Mao, T, M'soka, H, Hori, H, Kawasaki, and M, Sakurai

Subjects
DNA Replication, Antimetabolites, Antineoplastic, Leukemia, Experimental, Mercaptopurine, Cell Cycle, Mitosis, DNA, Neoplasm, Mice, Animals, RNA, Neoplasm, Thioguanine, Tumor Stem Cell Assay, DNA Damage, Nucleic Acid Synthesis Inhibitors
Abstract

Many protocol studies have shown that low dose 6-mercaptopurine (6MP) in maintenance chemotherapy for childhood acute lymphoblastic leukemia (ALL) can be utilized to cure the disease. Mitotic or reproductive cell death has been recognized after G2 arrest when cells are treated with antitumor agents. The precise mechanism of mode of action of 6MP still remains unclear. We found delayed cytotoxic effect of 6MP in P388 murine leukemic cells. Morphological study showed that 6MP induced delayed death was characterized by an enlargement of cell size and multinucleated nuclei. Agarose gel electrophoresis of fragmented DNA from cells treated with 6MP showed the typical ladder pattern. These findings were compatible with mitotic death. Our results make us hypothesize that the delayed cytotoxicity of 6MP is one of the drug induced mitotic deaths caused by DNA damage due to incorporation of 6-thioguanine (6TG) into DNA as thioguanine nucleotide (TGN). Mitotic death may be a mechanism for killing the cycling cells from residual leukemic cells in G0 or long G1 phases in the treatment of childhood ALL.

Published
1999

22. Ruthenium concentrations in geological boundary deposits and their correlation with Iridium by RIMS

Author

C. F. Chai, X. B. Xin, W. X. Ji, X. Y. Xu, and X. Y. Mao

Subjects
Extinction event, Chemistry, Extinction (optical mineralogy), chemistry.chemical_element, Mineralogy, Iridium, Concentration ratio, Earth (classical element), Abundance of the chemical elements, Cretaceous, Ruthenium
Abstract

The reason the biological mass extinctions in the earth history is a great concern of geologists. A method using RIMS to determine the concentration of Ru has been developed. The Ru/Ir concentration ratios favour the impact model of extraterrestrial material on the earth to explain the dinosaur extinction at the end of the Cretaceous. This is the first data on Ru abundances in geological boundary deposits analyzed by RIMS.

Published
1995
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24. Iridium abundance maxima in the Upper Cenomanian extinction interval

Author

Richard Diner, Charles J. Orth, X. Y. Mao, Moses Attrep, W. P. Elder, and Erle G. Kauffman

Subjects
Extinction event, Paleontology, Geophysics, Extinction, Abundance (ecology), Benthic zone, General Earth and Planetary Sciences, Sedimentary rock, Cenomanian, Deposition (chemistry), Geology, Cretaceous
Abstract

Two iridium abundance peaks, both 0.11 ppb (whole-rock basis) over a local background of 0.017 ppb, have been found in Middle Cretaceous marine rocks near Pueblo, Colorado. They occur just below the 92-million-year-old Cenomanian-Turonian (C-T) stage boundary. No other peaks were found in 45 meters of strata (about 2.5 million years of deposition) above and below the boundary interval. The broad lower peak straddles the first in a series of extinctions of benthic and nektonic macrobiota which comprise the C-T extinction event. The sharp upper peak occurs stratigraphically about 1.2 meters above the lower peak. The excess Ir might be from meteoroid impacts.

Published
1988
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25. Identification of the origin of silicate, magnetic and glass spherules from trace elemental abundances by INAA

Author

Chifang Chai, X. Y. Mao, H. C. Peng, X. Y. Xiao, K. Lu, Z. Y. Ouyang, and S. L. Ma

Subjects
Elemental composition, Health, Toxicology and Mutagenesis, Public Health, Environmental and Occupational Health, Analytical chemistry, Mineralogy, Pollution, Silicate, Analytical Chemistry, chemistry.chemical_compound, Nuclear Energy and Engineering, chemistry, Chondrite, Radiology, Nuclear Medicine and imaging, Spectroscopy, Refractory (planetary science)
Abstract

Chemical elemental compositions of some silicate, magnetic and glass spherules were investigated with INAA. The elements determined include Os, Ir, Ni, Co, Fe, Cr, Au, La, Ce, Sm, Eu, Yb, Lu and Sc etc. The elemental correlation, as well as their enrichment (or depletion) factors relative to Cl chondrite were examined. The high concentrations of the refractory siderophile elements contained in these spherules support the proposal that they originate from extraterrestrial substances. Some useful chemical criteria for identifying the sources of silicate, magnetic and glass spherules are put forward.

Published
1987
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26. Determination of trace elements in Wuxi fallen ice by INAA

Author

Q. W. Zhang, Chifang Chai, X. Y. Mao, Z. Z. Yang, Y. Y. Sun, S. L. Ma, and D. Y. Xu

Subjects
Nuclear Energy and Engineering, Chemistry, Chondrite, Health, Toxicology and Mutagenesis, Public Health, Environmental and Occupational Health, Analytical chemistry, Mineralogy, Radiology, Nuclear Medicine and imaging, Neutron activation analysis, Pollution, Spectroscopy, Ice water, Analytical Chemistry
Abstract

The concentrations of 14 elements, including Ir, Au, Co, Cr, Fe, Sr, Rb, K, Ta, Zn, Sb, Ba, Sc and Se, in the Wuxi fallen ice were determined by neutron activation analysis. The experimental results show that the relative concentration ratios of Ir/Co, Ir/Cr and Ir/Sc etc. in the ice water (0.0069, 0.00024 and 0.11, respectively) are quite close to those of Type C1 chondrite (0.0102, 0.00021 and 0.092, respectively), which implies that the fallen ice might be a piece of extraterrestrial substance.

Published
1987
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27. On the methodology of radiochemical neutron activation analysis of noble matals

Author

X. Y. Mao, K. N. Liao, W. C. Liu, S. L. Ma, and Chifang Chai

Subjects
Tertiary amine, Chemistry, Elution, Health, Toxicology and Mutagenesis, Extraction (chemistry), Radiochemistry, Public Health, Environmental and Occupational Health, engineering.material, Pollution, Analytical Chemistry, Nuclear Energy and Engineering, engineering, Radiology, Nuclear Medicine and imaging, Noble metal, Amine gas treating, Absorption (chemistry), Neutron activation analysis, Spectroscopy, Neutron activation
Abstract

Two different radiochemical procedures were developed: chelate ion resin exchange and amine solvent extraction. Two kinds of new Chinese chelate resins (NANKAI-3926 and BEI-5) and a new longchain primary amine N1923 were compared with the Srafion NMRR and the tertiary amine N235 in absorption performance of noble metals, respectively. Influences of various experimental conditions, e. g. sample digestion, acidity, equilibrium time, as well as elution of noble metals, on analytical sensitivity and chemical yield were discussed. Combining with neutron activation, the radiochemical separation procedures developed were used to determine the noble metal contents in the geological samples from Permian/Triassic boundary in South China.

Published
1987
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28. An investigation of concentration variations of trace elements during storage of natural water samples

Author

X. X. Li, X. Y. Mao, X. Z. Qian, and Chifang Chai

Subjects
Health, Toxicology and Mutagenesis, Natural water, Public Health, Environmental and Occupational Health, Contamination, Polyethylene, Pollution, Water sample, Analytical Chemistry, chemistry.chemical_compound, Adsorption, Nuclear Energy and Engineering, Distilled water, chemistry, Tap water, Reservoir water, Environmental chemistry, Radiology, Nuclear Medicine and imaging, Spectroscopy
Abstract

Contamination and adsorption of trace elements during storage of natural water samples in polyethylene containers have been studied. Variations of concentrations of 29 elements in pH=1.5 natural water samples stored in polyethylene bottles for 15 and 30 days respectively were determined by the method of freeze-drying preconcentration and NAA. The percentage adsorption loss of radioactive indicators60Co,124Sb,65Zn,75Se,134Cs and46Sc in the pH=1.5–8.0 reservoir water, tap water and distilled water stored for 1–2 months were also determined. The optimized storage condition for natural water is obtained.

Published
1987
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29. Co FERRITE COATING EFFECT ON FINE IRON PARTICLES

Author

X.-Y. Mao, H.X. Lu, W. Yu, You Wei Du, and W.-F. Chen

Subjects
Ferrite layer, Magnetization, Materials science, Chemical engineering, Coating, Coprecipitation, Ferrite (iron), General Engineering, engineering, Mineralogy, Core (manufacturing), engineering.material, Hyperfine structure
Abstract

The surface of 260 iron particles has been coated with a Co ferrite layer by chemical coprecipitation method. The Co ferrite layer causes a decrease of specific magnetization and increase of hyperfine field of a-Fe core. The effect of the Co ferrite layer on Hc belongs to an interface effect.

Published
1988
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30. Neutron activation studies of refractory siderophile element anomaly and other trace element patterns in boundary clay between Permian/Triassic, Changxin, China

Author

Q. W. Zhang, Z. Z. Yang, D. Y. Xu, Y. Y. Sun, Y. Q. Zhou, S. L. Ma, X. Y. Mao, and Chifang Chai

Subjects
Permian, Health, Toxicology and Mutagenesis, Anomaly (natural sciences), Public Health, Environmental and Occupational Health, Trace element, Mineralogy, Boundary (topology), Pollution, Abundance of the chemical elements, Analytical Chemistry, Boundary layer, Nuclear Energy and Engineering, Radiology, Nuclear Medicine and imaging, Spectroscopy, Refractory (planetary science), Neutron activation
Abstract

Although Ir anomaly has been discovered in a number of C/T boundaries in the world, no positive results of this anomaly in Permian/Triassic (P/Tr) boundary were given. There are many well-developed P/T sections in South China. One of representative sections is located at the Baoqing quarry, Meishan Town, Changxin County, Zhejiang Province. Ir, Os, Re, Au, Pt, Cu and Mo were determined by the radiochemical procedure developed in our laboratory. (1) Besides those accessible by INAA. The results reveal that the refractory siderophile and other chalcophile elements have certain enrichment near and at the boundary layer. However, the Ir/Au and other element abundance ratios fail to accord with the extraterrestrial values. The nature of the boundary event was discussed in terms of elemental geochemistry.

Published
1987
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31. Geochemical anomaly at the Devonian/ Carboniferous BOUNDARY, Huangmao, Guangxi, China

Author

Y. Q. Zhou, Chifang Chai, Z.S. Ning, S.L. Bai, S. L. Ma, X. Y. Mao, and J.G. Ma

Subjects
Paleontology, Anomaly (natural sciences), Carboniferous, General Agricultural and Biological Sciences, China, Devonian, Geology
Abstract

Elemental abundance variations across a Devonian Carboniferous (D'C) boundary section located at Huangmao, Guangxi Zhuang Autonomous Region. China, have been investigated by INAA and RNAA. Abundanc...

Published
1989
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35. In vitro iron absorption of α-lactalbumin hydrolysate-iron and β-lactoglobulin hydrolysate-iron complexes.

Author

X. Wang, T. Ai, X. L. Meng, J. Zhou, and X. Y. Mao

Subjects
*PEPTIDES, *ABSORPTION (Physiology), *IRON in the body, *LACTALBUMIN, *LACTOGLOBULINS, *FERRITIN
Abstract

To study the feasibility of promoting iron absorption by peptides derived from α-lactalbumin and β-lactoglobulin, the present work examined the transport of iron across Caco-2 monolayer cell as in vitro model. Caco-2 cells were seeded in bicameral chambers with α-lactalbumin hydrolysate-Fe (α-LAH-Fe) complex and β-lactoglobulin hydrolysate-Fe (β-LGH-Fe) complex, α-LAH and iron mixture, β-LGH and iron mixture, FeSO4 and ascorbic acid mixture, and FeSO4. In addition, the cytotoxicity of α-LAH-Fe and β-LGHFe complexes were measured by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay. The iron absorption and ferritin content were assessed using the coupled in vitro digestion/Caco-2 cell model. Results support that peptide-iron complexes can promote ferritin formation and it is possible to apply β-LGH-Fe complexes as iron-fortified supplements with high iron absorbability. [ABSTRACT FROM AUTHOR]

Published
2014
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36. Observation of e(+)e(-) -> pi(+) pi(-)psi(3770) and D-1(2420)(0)(D)over-bar(0) + c.c

Author

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Abstract

WOS: 000480609000001, Several intermediate states of the reaction channels e(+)e(-) -> pi(+)pi(-) D-0(D) over bar (0) and e(+)e(-) -> pi(+)pi-D+D- are studied using the data samples collected with the BESIII detector at center-of-mass energies above 4.08 GeV. For the first time in this final state, a psi(3770) signal is seen in the DD invariant mass spectrum, with a statistical significance of 5.2 sigma at root s = 4.42 GeV. There is also evidence for this resonance at root s = 4.26 and 4.36 GeV with statistical significance of 3.2 sigma and 3.3 sigma, respectively. In addition, the Born cross section of e(+)e(-) ->pi(+)pi(-)psi(3770) is measured. The proposed heavy-quark-spin-symmetry partner of the X(3872), the state X-2(4013), is also searched for in the D (D) over bar invariant mass spectra. No obvious signal is found. The upper limit of the Born cross section of the process e(+)e(-) -> rho X-0(2)(4013) combined with the branching fraction is measured. Also, the processes e(+)e(-) -> D-1(2420)(D) over bar c.c. are investigated. The neutral mode with D-1(2420)(0) -> D-0 pi(+)pi(-) is reported with statistical significance of 7.4 sigma at root s = 4.42 GeV for the first time, and evidence with statistical significance of 3.2 sigma and 3.3 sigma at root s = 4.36 and 4.60 GeV is seen, respectively. No evident signal for the process e(+)e(-) -> D-1(2420)(0)(D) over bar (0) + c.c., D-1(2420)(0) -> D*(+)pi(-) is reported. Evidence for e(+)e(-) -> D-1(2420)+D- + c.c., D-1(2420)(+) -> D+pi(+)pi(-) is reported with statistical significance of 3.1 sigma and 3.0 sigma at root s. = 4.36 and 4.42 GeV, respectively., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11625523, 11635010, 11735014, 11835012]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Fund of NSFC [U1532257, U1532258, U1732263, U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [Collaborative Research Center CRC 1044]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Knut and Alice Wallenberg Foundation (Sweden) [2016.0157]; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; Joint Large-Scale Scientific Facility Fund of CAS [U1532257, U1532258, U1732263, U1832207]; Institute of Nuclear and Particle Physics (INPAC), The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, No. 11735014; National Natural Science Foundation of China (NSFC) under Contract No. 11835012; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1532257, No. U1532258, No. U1732263, No. U1832207; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; The Institute of Nuclear and Particle Physics (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt.

Published
2019

37. Partial-wave analysis of J/psi -> K+ K- pi(0)

Author

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Abstract

WOS: 000480688800001, A partial-wave analysis of the decay J/psi -> K+ K- pi(0) has been made using (223.7 +/- 1.4) x 10(6) J/psi events collected with the BESIII detector in 2009. The analysis, which is performed within the isobar-model approach, reveals contributions from K-2* (1430)(+/-), K-2* (1980)(+/-) and K-4* (2045)(+/-) decaying to K-+/-pi(0). The two latter states are observed in J/psi decays for the first time. Two resonance signals decaying to K+ K- are also observed. These contributions cannot be reliably identified and their possible interpretations are discussed. The measured branching fraction B(J/psi -> K+ K- pi(0)) of (2.88 +/- 0.01 +/- 0.12) x 10(-3) is more precise than previous results. Branching fractions for the reported contributions are presented as well. The results of the partial-wave analysis differ significantly from those previously obtained by BESII and BABAR., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11835012, 11625523, 11635010, 11735014]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Fund of the NSFC; Joint Large-Scale Scientific Facility Fund of the CAS [U1532257, U1532258, U1732263, U1832207]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [CRC 1044]; DFG; NSFC [10805053]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Knut and Alice Wallenberg Foundation (Sweden) [2016.0157]; Royal Society, UK [DH160214]; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11625523, No. 11635010, and No. 11735014; National Natural Science Foundation of China (NSFC) under Contract No. 11835012; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1532257, No. U1532258, No. U1732263, and No. U1832207; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003 and No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC 1044; DFG and NSFC (CRC 110); Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; the National Science and Technology fund; the Knut and Alice Wallenberg Foundation (Sweden) under Contract No. 2016.0157; the Royal Society, UK under Contract No. DH160214; the Swedish Research Council; the U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, and No. DE-SC-0012069; the University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt. This paper is also supported by the NSFC under Contract No. 10805053.

Published
2019

38. Observation of psi(3686) -> p(p)over-bar phi

Author

Ablikim, M., Achasov, M. N., Adlarson, P., Ahmed, S., Albrecht, M., Alekseev, M., Amoroso, A., F. F., An, An, Q., Bai, Y., Bakina, O., Baldini Ferroli, R., Ban, Y., Begzsuren, K., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Biernat, J., Bloms, J., Boyko, I., Briere, R. A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cao, N., Cetin, S. A., Chai, J., Chang, J. F., Chang, W. L., Chelkov, G., Chen, D. Y., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, Y. B., Cheng, W., Cibinetto, G., Cossio, F., Cui, X. F., Dai, H. L., Dai, J. P., Dai, X. C., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., S. X., Du, Fan, J. Z., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fritsch, M., C. D., Fu, Fu, Y., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garillon, B., Garzia, I., Gersabeck, E. M., Gilman, A., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., L. M., Gu, M. H., Gu, Gu, S., Y. T., Gu, Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Guskov, A., Han, S., Hao, X. Q., Harris, F. A., K. L., He, Heinsius, F. H., Held, T., Heng, Y. K., Hou, Y. R., Hou, Z. L., H. M., Hu, J. F., Hu, Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Huesken, N., Hussain, T., Ikegami Andersson, W., Imoehl, W., Irshad, M., Ji, Q., Q. P., Ji, X. B., Ji, X. L., Ji, Jiang, H. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Kalantar-Nayestanaki, N., Kang, X. S., Kappert, R., Kavatsyuk, M., B. C., Ke, Keshk, I. K., Khan, T., Khoukaz, A., Kiese, P., Kiuchi, R., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kuemmel, M., Kuessner, M., Kupsc, A., Kurth, M., Kurth, M. G., Kuhn, W., Lange, J. S., Larin, P., Lavezzi, L., Leithoff, H., Lenz, T., Li, C., D. M., Li, Li, F., F. Y., Li, Li, G., H. B., Li, H. J., Li, J. C., Li, J. W., Li, Li, K., L. K., Li, Li, L., P. L., Li, P. R., Li, Q. Y., Li, W. D., Li, W. G., Li, X. H., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Li, Z. Y., Li, Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Liao, L. Z., Libby, J., Lin, C. X., Lin, D. X., Lin, Y. J., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, D. Y., Liu, F. H., Liu, F., Liu, H. B., Liu, H. M., Liu, H., Liu, J. B., Liu, J. Y., Liu, K. Y., Liu, K., Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, X. Y., Liu, Y. B., Liu, Z. A., Liu, Z., Long, Y. F., Lou, X. C., H. J., Lu, J. D., Lu, J. G., Lu, Lu, Y., Y. P., Lu, Luo, C. L., Luo, M. X., Luo, P. W., Luo, T., Luo, X. L., Lusso, S., Lyu, X. R., F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, X. N., Ma, X. X., Ma, X. Y., Ma, Y. M., Ma, Maas, F. E., Maggiora, M., Maldaner, S., Malde, S., Malik, Q. A., Mangoni, A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., X. H., Mo, Y. J., Mo, Morales Morales, C., Muchnoi, N. Y., Muramatsu, H., Mustafa, A., Nakhoul, S., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, M., T. Y., Qi, Qian, S., Qiao, C. F., Qin, N., Qin, X. P., Qin, X. S., Qin, Z. H., Qiu, J. F., S. Q., Qu, Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rivetti, A., Rodin, V., Rolo, M., Rong, G., Rosner, C., Rump, M., Sarantsev, A., Savrie, M., Schoenning, K., Shan, W., Shan, X. Y., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, X., Shi, X. D., Song, J. J., Song, Q. Q., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sui, F. F., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tan, Y. T., Tang, C. J., Tang, G. Y., Tang, X., Thoren, V., Tsednee, B., Uman, I., Wang, B., Wang, B. L., Wang, C. W., Wang, D. Y., Wang, H. H., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, M. Z., Wang, P. L., Wang, R. M., Wang, W. P., Wang, X., Wang, X. F., Wang, X. L., Wang, Y., Wang, Y. F., Wang, Z., Wang, Z. G., Wang, Z. Y., Weber, T., Wei, D. H., Weidenkaff, P., Wen, H. W., Wen, S. P., Wiedner, U., Wilkinson, G., Wolke, M., L. H., Wu, L. J., Wu, Wu, Z., Xia, L., Xia, Y., Xiao, S. Y., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xing, T. Y., Xiong, X. A., Xiu, Q. L., G. F., Xu, Xu, L., Q. J., Xu, Xu, W., X. P., Xu, Yan, F., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, R. X., Yang, S. L., Yang, Y. H., Yang, Y. X., Yang, Y., Yang, Z. Q., Ye, M., M. H., Ye, Yin, J. H., You, Z. Y., B. X., Yu, C. X., Yu, J. S., Yu, Yuan, C. Z., Yuan, X. Q., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. F., Zhang, T. J., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. T., Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, L., Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, L. P., Zhou, Q., Zhou, X., Zhou, X. K., Zhou, X. R., Zhu, A. N., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S. H., Zhu, W. J., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H., İstanbul Arel Üniversitesi, and [Ablikim, M. -- An, F. F. -- Cai, X. -- Cao, G. F. -- Cao, N. -- Chang, J. F. -- Chang, W. L. -- Chen, G. -- Chen, H. S. -- Chen, J. C. -- Chen, M. L. -- Chen, Y. B. -- Dai, H. L. -- Dai, X. C. -- Deng, Z. Y. -- Dong, J. -- Dong, L. Y. -- Dong, M. Y. -- Fang, J. -- Fang, S. S. -- Fang, Y. -- Fu, C. D. -- Fu, Y. -- Gao, Q. -- Gong, W. X. -- Gu, M. H. -- He, K. L. -- Heng, Y. K. -- Hou, Z. L. -- Hu, H. M. -- Hu, T. -- Hu, Y. -- Ji, Q. -- Ji, X. B. -- Ji, X. L. -- Jiang, X. S. -- Jin, D. P. -- Ke, B. C. -- Kiuchi, R. -- Kurth, M. -- Kurth, M. G. -- Li, F. -- Li, G. -- Li, H. B. -- Li, J. C. -- Li, Ke -- Li, L. K. -- Li, W. D. -- Li, W. G. -- Li, X. N. -- Liang, H. -- Liao, L. Z. -- Liu, B. J. -- Liu, C. X. -- Liu, Fang -- Liu, H. M. -- Liu, Huanhuan -- Liu, J. Y. -- Liu, T. -- Liu, X. Y. -- Liu, Z. A. -- Lou, X. C. -- Lu, J. D. -- Lu, J. G. -- Lu, Y. -- Lu, Y. P. -- Luo, X. L. -- Ma, H. L. -- Ma, M. M. -- Ma, Q. M. -- Ma, X. X. -- Ma, X. Y. -- Mao, Z. P. -- Min, J. -- Mo, X. H. -- Ning, Z. -- Niu, S. L. -- Ouyang, Q. -- Ping, R. G. -- Qian, S. -- Qin, Z. H. -- Qiu, J. F. -- Rong, G. -- Shen, X. Y. -- Sheng, H. Y. -- Shi, X. -- Song, X. Y. -- Sun, G. X. -- Sun, S. S. -- Sun, X. H. -- Sun, Y. Z. -- Sun, Z. J. -- Sun, Z. T. -- Tang, G. Y. -- Tang, X. -- Wang, B. -- Wang, K. -- Wang, L. L. -- Wang, L. S. -- Wang, Meng -- Wang, P. L. -- Wang, X. F. -- Wang, Y. F. -- Wang, Z. -- Wang, Z. G. -- Wang, Z. Y. -- Wang, Zongyuan -- Wen, S. P. -- Wu, L. H. -- Wu, L. J. -- Wu, Z. -- Xiao, S. Y. -- Xiao, Y. J. -- Xie, Y. G. -- Xing, T. Y. -- Xiong, X. A. -- Xiu, Q. L. -- Xu, G. F. -- Xu, L. -- Xu, W. -- Yang, H. X. -- Yang, S. L. -- Yang, Yifan -- Ye, M. -- Yin, J. H. -- Yu, B. X. -- Yuan, C. Z. -- Yuan, Y. -- Zhang, B. X. -- Zhang, B. Y. -- Zhang, C. C. -- Zhang, D. H. -- Zhang, H. Y. -- Zhang, J. -- Zhang, J. W. -- Zhang, J. Y. -- Zhang, J. Z. -- Zhang, K. -- Zhang, Y. H. -- Zhang, Yang -- Zhang, Yao -- Zhao, G. -- Zhao, J. W. -- Zhao, J. Y. -- Zhao, J. Z. -- Zhao, Ling -- Zhao, Q. -- Zhao, T. C. -- Zhao, Y. B. -- Zheng, J. P. -- Zhou, L. -- Zhou, L. P. -- Zhou, Q. -- Zhu, A. N. -- Zhu, K. -- Zhu, K. J. -- Zhu, Y. S. -- Zhu, Z. A. -- Zhuang, J. -- Zou, B. S. -- Zou, J. H.] Inst High Energy Phys, Beijing 100049, Peoples R China -- [Gu, S. -- Qi, T. Y. -- Shen, C. P. -- Yan, W. C.] Beihang Univ, Beijing 100191, Peoples R China -- [Li, Lei] Beijing Inst Petrochem Technol, Beijing 102617, Peoples R China -- [Albrecht, M. -- Feldbauer, F. -- Fritsch, M. -- Heinsius, F. H. -- Held, T. -- Keshk, I. K. -- Kopf, B. -- Kuemmel, M. -- Kuessner, M. -- Mustafa, A. -- Pelizaeus, M. -- Pitka, A. -- Qin, X. S. -- Richter, M. -- Sowa, C. -- Weber, T. -- Wiedner, U. -- Zhang, J. Q.] Bochum Ruhr Univ, D-44780 Bochum, Germany -- [Bennett, J., V -- Briere, R. A.] Carnegie Mellon Univ, Pittsburgh, PA 15213 USA -- [Chen, D. Y. -- Gao, Y. G. -- Liu, Feng -- Liu, Ke -- Mo, Y. J. -- Xie, Y. H. -- Zhang, Z. H.] Cent China Normal Univ, Wuhan 430079, Hubei, Peoples R China -- [Ye, M. H.] China Ctr Adv Sci & Technol, Beijing 100190, Peoples R China -- [Nisar, S.] COMSATS Univ Islamabad, Lahore Campus,Def Rd,Off Raiwind Rd, Lahore 54000, Pakistan -- [Li, H. J. -- Luo, T. -- Wang, X. L. -- Zhang, Yi] Fudan Univ, Shanghai 200443, Peoples R China -- [Achasov, M. N. -- Muchnoi, N. Yu -- Nikolaev, I. B.] GI Budker Inst Nucl Phys SB RAS BINP, Novosibirsk 630090, Russia -- [Goetzen, K. -- Kliemt, R. -- Nakhoul, S. -- Nerling, F. -- Peters, K.] GSI Helmholtzctr Heavy Ion Res GmbH, D-64291 Darmstadt, Germany -- [Liao, G. R. -- Wei, D. H. -- Yang, Y. X.] Guangxi Normal Univ, Guilin 541004, Peoples R China -- [Gu, Y. T. -- Lin, Y. J. -- Liu, H. B. -- Qin, X. P.] Guangxi Univ, Nanning 530004, Peoples R China -- [Xu, Q. J.] Hangzhou Normal Univ, Hangzhou 310036, Zhejiang, Peoples R China -- [Ahmed, S. -- Dbeyssi, A. -- Larin, P. -- Lin, D. X. -- Maas, F. E. -- Morales, C. Morales -- Rosner, Ch] Helmholtz Inst Mainz, Johann Joach Becher Weg 45, D-55099 Mainz, Germany -- [Hao, X. Q. -- Huang, J. S. -- Ji, Q. P. -- Sun, J. F.] Henan Normal Univ, Xinxiang 453007, Henan, Peoples R China -- [Liu, Huihui] Henan Univ Sci & Technol, Luoyang 471003, Peoples R China -- [Jiao, Z. -- Lu, H. J.] Huangshan Coll, Huangshan 245000, Peoples R China -- [Shan, W.] Hunan Normal Univ, Changsha 410081, Hunan, Peoples R China -- [Xia, Y. -- Yan, Y. H. -- Yang, Z. Q. -- Yu, J. S. -- Zeng, Y. -- Zhou, Xiaoyu -- Zhou, Xu] Hunan Univ, Changsha 410082, Hunan, Peoples R China -- [Libby, J.] Indian Inst Technol Madras, Chennai 600036, Tamil Nadu, India -- [Guo, A. Q. -- Imoehl, W. -- Mitchell, R. E.] Indiana Univ, Bloomington, IN 47405 USA -- [Ferroli, R. Baldini -- Bertani, M. -- Calcaterra, A. -- Felici, G. -- Patteri, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy -- [Mangoni, A. -- Pacetti, S.] Univ Perugia, I-06100 Perugia, Italy -- [Bettoni, D. -- Cibinetto, G. -- Farinelli, R. -- Garzia, I -- Mezzadri, G.] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy -- [Farinelli, R. -- Savrie, M.] Univ Ferrara, I-44122 Ferrara, Italy -- [Begzsuren, K. -- Tsednee, B.] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongolia -- [Berger, N. -- Denig, A. -- Garillon, B. -- Gradl, W. -- Guo, Y. P. -- Kiese, P. -- Leithoff, H. -- Lenz, T. -- Liu, Zhiqing -- Maldaner, S. -- Redmer, C. F. -- Ripka, M. -- Weidenkaff, P.] Johannes Gutenberg Univ Mainz, Johann Joachim Becher Weg 45, D-55099 Mainz, Germany -- [Bakina, O. -- Boyko, I -- Chelkov, G. -- Dedovich, D. -- Denysenko, I -- Guskov, A. -- Nefedov, Y. -- Sarantsev, A. -- Zhemchugov, A.] Joint Inst Nucl Res, Dubna 141980, Moscow Region, Russia -- [Koch, L. -- Kuehn, W. -- Lange, J. S. -- Liang, Y. T.] Justus Liebig Univ Giessen, Phys Inst 2, Heinrich Buff Ring 16, D-35392 Giessen, Germany -- [Kalantar-Nayestanaki, N. -- Kappert, R. -- Kavatsyuk, M. -- Messchendorp, J. G. -- Rodin, V] Univ Groningen, KVI CART, NL-9747 AA Groningen, Netherlands -- [Li, P. R. -- Liu, X.] Lanzhou Univ, Lanzhou 730000, Gansu, Peoples R China -- [Ding, Y. -- Huang, Z. L. -- Kang, X. S. -- Liu, K. Y. -- Ma, F. C.] Liaoning Univ, Shenyang 110036, Liaoning, Peoples R China -- [Guo, L. B. -- Luo, C. L. -- Ping, J. L. -- Wen, H. W. -- Xiao, Z. J. -- Zhong, B.] Nanjing Normal Univ, Nanjing 210023, Jiangsu, Peoples R China -- [Chen, S. J. -- Dou, Z. L. -- Gu, L. M. -- Huang, X. Z. -- Jin, S. -- Min, T. J. -- Qi, M. -- Wang, C. W. -- Yang, Y. H. -- Zhang, S. F.] Nanjing Univ, Nanjing 210093, Jiangsu, Peoples R China -- [Cui, X. F. -- Dong, C. -- Gong, L. -- Jiang, X. Y. -- Li, X. Q. -- Liu, Y. B. -- Ma, X. N. -- Qu, S. Q. -- Shen, P. X. -- Yu, C. X. -- Zhao, M. G. -- Zhu, J. -- Zhu, W. J.] Nankai Univ, Tianjin 300071, Peoples R China -- [Ban, Y. -- Li, F. Y. -- Long, Y. F. -- Mao, Y. J. -- Wang, D. Y. -- Wang, M. Z. -- Wang, X. -- Yuan, X. Q. -- Zheng, Y.] Peking Univ, Beijing 100871, Peoples R China -- [Guo, R. P.] Shandong Normal Univ, Jinan 250014, Shandong, Peoples R China -- [Huang, X. T. -- Jiang, H. L. -- Jiao, J. B. -- Li, Q. Y. -- Li, X. L. -- Ma, L. L. -- Ma, Y. M. -- Song, J. J. -- Sui, F. F. -- Wang, H. H. -- Wang, M. -- Zhang, X. Y.] Shandong Univ, Jinan 250100, Shandong, Peoples R China -- [Dai, J. P. -- Hu, J. F. -- Liu, B. -- Liu, D. Y. -- Yang, H. J. -- Zhang, T. J.] Shanghai Jiao Tong Univ, Shanghai 200240, Peoples R China -- [Liu, F. H.] Shanxi Univ, Taiyuan 030006, Shanxi, Peoples R China -- [Liang, Y. F. -- Tang, C. J.] Sichuan Univ, Chengdu 610064, Sichuan, Peoples R China -- [Li, J. W. -- Xu, X. P.] Soochow Univ, Suzhou 215006, Peoples R China -- [Bai, Y.] Southeast Univ, Nanjing 211100, Jiangsu, Peoples R China -- [An, Q. -- Cai, X. -- Chang, J. F. -- Chen, M. L. -- Chen, Y. B. -- Dai, H. L. -- Dong, J. -- Dong, M. Y. -- Fang, J. -- Feng, C. Q. -- Gao, X. L. -- Gao, Z. -- Gong, W. X. -- Gu, M. H. -- Heng, Y. K. -- Hu, T. -- Huang, G. S. -- Irshad, M. -- Ji, X. L. -- Jiang, X. S. -- Jin, D. P. -- Khan, T. -- Li, Cheng -- Li, F. -- Li, P. L. -- Li, X. H. -- Li, X. N. -- Liang, H. -- Liu, D. -- Liu, J. B. -- Liu, S. B. -- Liu, Z. A. -- Lou, X. C. -- Lu, J. G. -- Lu, Y. P. -- Luo, X. L. -- Ma, X. Y. -- Min, J. -- Mo, X. H. -- Ning, Z. -- Niu, S. L. -- Ouyang, Q. -- Pan, Y. -- Peng, H. P. -- Prasad, V -- Qian, S. -- Qin, Z. H. -- Shan, X. Y. -- Shao, M. -- Shi, X. -- Shi, X. D. -- Song, Q. Q. -- Sun, Y. J. -- Sun, Y. K. -- Sun, Z. J. -- Tan, Y. T. -- Wang, K. -- Wang, W. P. -- Wang, Y. -- Wang, Y. F. -- Wang, Z. -- Wang, Z. G. -- Wu, Z. -- Xia, L. -- Xie, Y. G. -- Xiu, Q. L. -- Yan, W. B. -- Yang, R. X. -- Ye, M. -- Yu, B. X. -- Zhang, B. Y. -- Zhang, H. Y. -- Zhang, J. W. -- Zhang, Y. -- Zhang, Y. H. -- Zhang, Y. T. -- Zhao, J. W. -- Zhao, J. Z. -- Zhao, Lei -- Zhao, Y. B. -- Zhao, Z. G. -- Zheng, J. P. -- Zhou, L. -- Zhou, X. R. -- Zhu, K. J. -- Zhu, Y. C. -- Zhuang, J.] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China -- [An, Q. -- Cai, X. -- Chang, J. F. -- Chen, M. L. -- Chen, Y. B. -- Dai, H. L. -- Dong, J. -- Dong, M. Y. -- Fang, J. -- Feng, C. Q. -- Gao, X. L. -- Gao, Z. -- Gong, W. X. -- Gu, M. H. -- Heng, Y. K. -- Hu, T. -- Huang, G. S. -- Irshad, M. -- Ji, X. L. -- Jiang, X. S. -- Jin, D. P. -- Khan, T. -- Li, Cheng -- Li, F. -- Li, P. L. -- Li, X. H. -- Li, X. N. -- Liang, H. -- Liu, D. -- Liu, J. B. -- Liu, S. B. -- Liu, Z. A. -- Lou, X. C. -- Lu, J. G. -- Lu, Y. P. -- Luo, X. L. -- Ma, X. Y. -- Min, J. -- Mo, X. H. -- Ning, Z. -- Niu, S. L. -- Ouyang, Q. -- Pan, Y. -- Peng, H. P. -- Prasad, V -- Qian, S. -- Qin, Z. H. -- Shan, X. Y. -- Shao, M. -- Shi, X. -- Shi, X. D. -- Song, Q. Q. -- Sun, Y. J. -- Sun, Y. K. -- Sun, Z. J. -- Tan, Y. T. -- Wang, K. -- Wang, W. P. -- Wang, Y. -- Wang, Y. F. -- Wang, Z. -- Wang, Z. G. -- Wu, Z. -- Xia, L. -- Xie, Y. G. -- Xiu, Q. L. -- Yan, W. B. -- Yang, R. X. -- Ye, M. -- Yu, B. X. -- Zhang, B. Y. -- Zhang, H. Y. -- Zhang, J. W. -- Zhang, Y. -- Zhang, Y. H. -- Zhang, Y. T. -- Zhao, J. W. -- Zhao, J. Z. -- Zhao, Lei -- Zhao, Y. B. -- Zhao, Z. G. -- Zheng, J. P. -- Zhou, L. -- Zhou, X. R. -- Zhu, K. J. -- Zhu, Y. C. -- Zhuang, J.] State Key Lab Particle Detect & Elect, Hefei 230026, Anhui, Peoples R China -- [Li, Z. B. -- Li, Z. Y. -- Lin, C. X. -- Luo, P. W. -- Wang, Y. -- You, Z. Y. -- Zhang, H. H. -- Zhu, J.] Sun Yat Sen Univ, Guangzhou 510275, Guangdong, Peoples R China -- [Fan, J. Z. -- Gao, Y. -- Zhang, L. -- Zhu, X. L.] Tsinghua Univ, Beijing 100084, Peoples R China -- Ankara Univ, TR-06100 Ankara, Turkey -- [Cetin, S. A. -- Kolcu, O. B. -- Yuncu, A.] Istanbul Bilgi Univ, TR-34060 Istanbul, Turkey -- Uludag Univ, TR-16059 Bursa, Turkey -- [Uman, I] Near East Univ, Mersin 10, Nicosia, North Cyprus, Turkey -- [Cao, G. F. -- Cao, N. -- Chang, W. L. -- Chen, H. S. -- Dai, X. C. -- Dong, L. Y. -- Dong, M. Y. -- Fang, S. S. -- He, K. L. -- Heng, Y. K. -- Hou, Y. R. -- Hu, H. M. -- Hu, T. -- Ji, X. B. -- Jiang, X. S. -- Jin, D. P. -- Kurth, M. G. -- Li, H. B. -- Li, W. D. -- Liang, H. -- Liao, L. Z. -- Liu, H. M. -- Liu, J. Y. -- Liu, Q. -- Liu, T. -- Liu, X. Y. -- Liu, Z. A. -- Lou, X. C. -- Lu, J. D. -- Lyu, X. R. -- Ma, M. M. -- Ma, X. X. -- Mo, X. H. -- Olsen, S. L. -- Ouyang, Q. -- Ping, R. G. -- Qiao, C. F. -- Rong, G. -- Shen, X. Y. -- Sun, S. S. -- Wang, B. 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Subjects
state, e(+)e(-), threshold enhancement, state, e(+)e(-), NO, threshold enhancement
Abstract

WOS: 000473026500002, Using a data sample of 4.48 x 10(8) psi(3686) events collected with the BESIII detector, we present a first observation of psi(3686) -> p (p) over bar phi, and we measure its branching fraction to be [6.06 +/- 0.38(stat)+/- 0.48(syst)] x 10(-6). In contrast to the earlier discovery of a threshold enhancement in the p (p) over bar -mass spectrum of the channel j/psi -> gamma p (p) over bar, denoted as X(p (p) over bar), we do not find a similar enhancement in psi(3686) -> p (p) over bar phi. An upper limit of 1.82 x 10(-7) at the 90% confidence level on the branching fraction of psi(3686) -> X(p (p) over bar)phi -> p (p) over bar phi is obtained., IHEP computing center; National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11335008, 11425524, 11625523, 11635010, 11735014, 11565006]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Fund of the NSFC [U1332201, U1532257, U1532258, U1732263]; Joint Large-Scale Scientific Facility Fund of the CAS [U1332201, U1532257, U1532258, U1732263]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [CRC 1044]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie vanWetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11335008, No. 11425524, No. 11625523, No. 11635010, No. 11735014, No. 11565006; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1332201, No. U1532257, No. U1532258, No. U1732263; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie vanWetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt.

Published
2019

39. Observation of psi(3686) -> p(p)over-bar eta ' and improved measurement of J/psi -> p(p)over-bar eta '

Author

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. 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Abstract

WOS: 000458818300004, We observe the process psi(3686) -> p (p) over bar eta' for the first time, with a statistical significance higher than 10 sigma, and measure the branching fraction of J/psi -> p (p) over bar eta' with an improved accuracy compared to earlier studies. The measurements are based on 4.48 x 10(8) psi(3686) and 1.31 x 10(9) J/psi events collected by the BESIII detector operating at the BEPCII. The branching fractions are determined to be B(psi(3686) -> p (p) over bar eta') = (1.10 +/- 0.10 +/- 0.08) x 10(-5) and B(J/psi -> p (p) over bar eta' = (1.26 +/- 0.02 +/- 0.07) x 10(-4), where the first uncertainties are statistical and the second ones systematic. Additionally, the eta - eta' mixing angle is determined to be -24 degrees +/- 11 degrees based on psi(3686) -> p (p) over bar eta', and -24 degrees +/- 9 degrees based on J/psi -> p (p) over bar eta', respectively., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11335008, 11425524, 11625523, 11635010, 11735014]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); NSFC [U1532257, U1532258, U1732263]; CAS [U1532257, U1532258, U1732263]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [Collaborative Research Center CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11335008, No. 11425524, No. 11625523, No. 11635010, and No. 11735014; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1532257, No. U1532258, and No. U1732263; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003 and No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044, FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, and No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt.

Published
2019

40. Measurement of the Dynamics of the Decays D-s(+) -> eta(('))e(+)nu(e)

Author

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Alekseev, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Begzsuren, K., Bennett, D. W., Bennett, J., V, Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Boger, E., Boyko, I, Briere, R. A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, X. R., Chen, Y. B., Cheng, W., Chu, X. K., Cibinetto, G., Cossio, F., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I, Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. 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Abstract

WOS: 000462933300001, PubMed ID: 30978074, Using e(+)e(-) annihilation data corresponding to an integrated luminosity of 3.19 fb(-1) collected at a center-of-mass energy of 4.178 GeV with the BESIII detector, we measure the absolute branching fractions BDs+->eta e+nu e = (2.323 +/- 0.063(stat) +/- 0.063(syst))% and BDs+->eta'e+nu e = (0.824 +/- 0.073(stat) +/- 0.027(syst))% via a tagged analysis technique, where one D-s is fully reconstructed in a hadronic mode. Combining these measurements with previous BESIII measurements of BD+->eta(')e+nu e,the eta - eta' mixing angle in the quark flavor basis is determined to be phi(P) = (40.1 +/- 2.1(stat) +/- 0.7(syst))degrees. From the first measurements of the dynamics of D-s(+) -> eta(')e(+)nu(e) decays, the products of the hadronic form factors f(+)(eta('))(0) and the Cabibbo-Kobayashi-Maskawa matrix element vertical bar V-cs vertical bar are determined with different form factor parametrizations. For the two-parameter series expansion, the results are f(+)(eta) (0) vertical bar V-cs vertical bar = 0.4455 +/- 0.0053(stat) +/- 0.0044(syst) and f(+)(eta)' (0) vertical bar V-cs vertical bar and = 0.477 +/- 0.049(stat) +/- 0.011(syst)., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11335008, 11425524, 11625523, 11635010, 11735014]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); NSFC [U1632109, U1532257, U1532258, U1732263]; CAS [U1632109, U1532257, U1532258, U1732263]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; INPAC, The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11335008, No. 11425524, No. 11625523, No. 11635010, and No. 11735014; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1632109, No. U1532257, No. U1532258, and No. U1732263; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003 and No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044 and No. FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, and No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt.

Published
2019

41. Observation of the Decay X(3872) -> pi(0)chi(c1) (1P)

Author

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Alekseev, M., Amoroso, A., An, F. F., An, Q., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Begzsuren, K., Bennett, J., V, Berger, N., Bertani, M., Bettoni, D., Bianchi, F., Bloms, J., Boyko, I, Briere, R. A., Cai, H., Cai, X., Calcaterra, A., Cao, G. F., Cao, N., Cetin, S. A., Chai, J., Chang, J. F., Chang, W. L., Chelkov, G., Chen, D. Y., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, S. J., Chen, Y. B., Cheng, W., Cibinetto, G., Cossio, F., Cui, X. F., Dai, H. L., Dai, J. P., Dai, X. C., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I, Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Fan, J. Z., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fritsch, M., Fu, C. D., Fu, Y., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garillon, B., Garzia, I, Gilman, A., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, L. M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Guskov, A., Han, S., Hao, X. Q., Harris, F. A., He, K. L., Heinsius, F. H., Held, T., Heng, Y. K., Hou, Y. R., Hou, Z. L., Hu, H. M., Hu, J. F., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huesken, N., Hussain, T., Andersson, W. Ikegami, Imoehl, W., Irshad, M., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, H. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Kalantar-Nayestanaki, N., Kang, X. S., Kappert, R., Kavatsyuk, M., Ke, B. C., Keshk, I. K., Khan, T., Khoukaz, A., Kiese, P., Kiuchi, R., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kuemmel, M., Kuessner, M., Kupsc, A., Kurth, M., Kurth, M. G., Kuehn, W., Lange, J. S., Larin, P., Lavezzi, L., Leitho, H., Lenz, T., Li, C., Li, Cheng, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, J. W., Li, Ke, Li, L. K., Li, Lei, Li, P. L., Li, P. R., Li, Q. Y., Li, W. D., Li, W. G., Li, X. H., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Liao, L. Z., Libby, J., Lin, C. X., Lin, D. X., Lin, Y. J., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, D. Y., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. M., Liu, Huanhuan, Liu, Huihui, Liu, J. B., Liu, J. Y., Liu, K. Y., Liu, Ke, Liu, Q., Liu, S. B., Liu, T., Liu, X., Liu, X. Y., Liu, Y. B., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. D., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, P. W., Luo, T., Luo, X. L., Lusso, S., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, X. N., Ma, X. X., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Maldaner, S., Malik, Q. A., Mangoni, A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales, C. Morales, Muchnoi, N. Yu, Muramatsu, H., Mustafa, A., Nakhoul, S., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V, Qi, M., Qi, T. Y., Qian, S., Qiao, C. F., Qin, N., Qin, X. P., Qin, X. S., Qin, Z. H., Qiu, J. F., Qu, S. Q., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rivetti, A., Rolo, M., Rong, G., Rosner, Ch, Rump, M., Sarantsev, A., Savrie, M., Schoenning, K., Shan, W., Shan, X. Y., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Shi, X., Shi, X. D., Song, J. J., Song, Q. Q., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sui, F. F., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tan, Y. T., Tang, C. J., Tang, G. Y., Tang, X., Thoren, V, Tsednee, B., Uman, I, Wang, B., Wang, B. L., Wang, C. W., Wang, D. Y., Wang, H. H., Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, M. Z., Wang, Meng, Wang, P., Wang, P. L., Wang, R. M., Wang, W. P., Wang, X., Wang, X. F., Wang, Y., Wang, Y. F., Wang, Z., Wang, Z. G., Wang, Z. Y., Wang, Zongyuan, Weber, T., Wei, D. H., Weidenka, P., Wen, H. W., Wen, S. P., Wiedner, U., Wolke, M., Wu, L. H., Wu, L. J., Wu, Z., Xia, L., Xia, Y., Xiao, S. Y., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xing, T. Y., Xiong, X. A., Xiu, Q. L., Xu, G. F., Xu, J. J., Xu, L., Xu, Q. J., Xu, W., Xu, X. P., Yan, F., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, R. X., Yang, S. L., Yang, Y. H., Yang, Y. X., Yang, Yifan, Yang, Z. Q., Ye, M., Ye, M. H., Yin, J. H., You, Z. Y., Yu, B. X., Yu, C. X., Yu, J. S., Yuan, C. Z., Yuan, X. Q., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. F., Zhang, T. J., Zhang, X. Y., Zhang, Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yang, Zhang, Yao, Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, L. P., Zhou, Q., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, Xiaoyu, Zhou, Xu, Zhu, A. N., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S. H., Zhu, W. J., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H., İstanbul Arel Üniversitesi, and [Ablikim, M. -- An, F. F. -- Cai, X. -- Cao, G. F. -- Cao, N. -- Chang, J. F. -- Chang, W. L. -- Chen, G. -- Chen, H. S. -- Chen, J. C. -- Chen, M. L. -- Chen, Y. B. -- Dai, H. L. -- Dai, X. C. -- Deng, Z. 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Abstract

WOS: 000469035500004, PubMed ID: 31172749, Using a total of 9.0 fb(-1) of e(+)e(-) collision data with center-of-mass energies between 4.15 and 4.30 GeV collected by the BESIII detector, we search for the processes e(+)e(-) gamma X(3872) with X(3872) -> pi(0)chi(cJ) for J = 0, 1, 2. We report the first observation of X(3872) -> pi(0)chi(c1), a new decay mode of the X(3872), with a statistical significance of more than 5 sigma for all systematic fit variations. Normalizing to the previously established process e(+)e(-) -> gamma X(3872) with X(3872) -> pi(+) pi(-) J/psi, we find B(X(3872) -> pi(0)chi(c1))/B(X(3872) -> pi+ pi(-) J/psi) = 0.88(-0.27)(+0.33) +/- 0.10, where the first error is statistical and the second is systematic. We set 90% confidence level upper limits on the corresponding ratios for the decays to pi(0)chi(c0) and pi(0)chi(c2) of 19 and 1.1, respectively., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11335008, 11425524, 11625523, 11635010, 11735014]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Fund of the NSFC [U1532257, U1532258, U1732263]; Joint Large-Scale Scientific Facility Fund of CAS [U1532257, U1532258, U1732263]; CAS Key Research Program of Frontier Sciences [QYZDJ-SSW-SLH003, QYZDJ-SSW-SLH040]; 100 Talents Program of CAS; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [Collaborative Research Center CRC 1044]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology Fund; Swedish Research Council; Knut and Alice Wallenberg Foundation; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; INPAC, The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11335008, No. 11425524, No. 11625523, No. 11635010, No. 11735014; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1532257, No. U1532258, No. U1732263; CAS Key Research Program of Frontier Sciences under Contracts No. QYZDJ-SSW-SLH003, No. QYZDJ-SSW-SLH040; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC 1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology Fund; The Swedish Research Council; the Knut and Alice Wallenberg Foundation; U.S. Department of Energy under Awards No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt.

Published
2019

42. Study of two-photon decays of pseudoscalar mesons via J /ψ radiative decays

Author

BESIII Collaboration, Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., DeMori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, S., Gu, Y. T., Guo, A. Q., Guo, L. B., Guo, R. P., Guo, Y. P., Haddadi, Z., Han, S., Hao, X. Q., Harris, F. A., He, K. L., He, X. Q., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, C., Hu, H. M., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Hussain, T., Andersson, W. Ikegami, Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Khoukaz, A., Kiese, P., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuhlmann, M., Kupsc, A., Kühn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leiber, S., Leithoff, H., Leng, C., Li, C., ChengLi, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, J. 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Subjects
Particle physics, Meson, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Astrophysics::High Energy Astrophysical Phenomena, 01 natural sciences, law.invention, High Energy Physics - Experiment, NO, Subatomär fysik, Two-photon excitation microscopy, Astronomi, astrofysik och kosmologi, law, 0103 physical sciences, Subatomic Physics, Radiative transfer, Astronomy, Astrophysics and Cosmology, ddc:530, 010306 general physics, Collider, Nuclear Experiment, Partial-Wave Analysis, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Detector, Pseudoscalar, High Energy Physics::Experiment
Abstract

WOS: 000430909600001, Using a sample of 4.48 x 10(8) Psi(3686) events collected with the BESIII detector at the BEPCII collider, we study the two-photon decays of the pseudoscalar mesons pi(0,) eta , eta' , eta(1405), eta(1475), eta(1760), and X(1835) in J/Psi radiative decays using Psi(3686) -> pi(+) pi(-) J/Psi events. The pi(0), eta, and eta' mesons are clearly observed in the two-photon mass spectra, and the branching fractions are determined to be B(J/Psi -> gamma pi(0) -> 3 gamma) = (3.57 +/- 0.12 +/- 0.16) x 10(-5), B(J/Psi -> gamma eta -> 3 gamma) = (4.42 +/- 0.04 +/- 0.18) x 10(-4), and B(J/Psi -> gamma eta' -> 2 gamma) = (1.26 +/- 0.02 +/- 0.05) x 10(-4), where the first error is statistical and the second is systematic. No clear signal for eta(1405), eta(1475), eta(1760) or X(1835) is observed in the two- photon mass spectra, and upper limits at the 90% confidence level on the product branching fractions are obtained., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11565006, 11235011, 1335008, 11425524, 11625523, 11635010]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC; CAS [U1332201, U1232107, U1532257, U1532258, KJCX2-YW-N29, KJCX2-YW-N45, QYZDJ-SSW-SLH003]; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Collaborative Research Center [CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11565006, No. 11235011, No. 1335008, No. 11425524, No. 11625523, No. 11635010; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1332201, No. U1232107, No. U1532257, No. U1532258; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45, No. QYZDJ-SSW-SLH003; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044, No. FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2018
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43. Observation of h(1)(1380) in the J/psi -> eta ' K(K)over-bar pi decay

Author

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. 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Abstract

WOS: 000447623400001, Using 1.31 x 10(9) J/psi events collected by the BESIII detector at the BEPCII e(+)e(-) collider, we report the first observation of the h(1)(1380) in J/psi -> eta'h(1)(1380) with a significance of more than ten standard deviations. The mass and width of the possible axial-vector strangeonium candidate h(1)(1380) are measured to be M = (1423.2 +/- 2.1 +/- 7.3) MeV/c(2) and Gamma = (90.3 +/- 9.8 +/- 17.5) MeV. The product branching fractions, assuming no interference, are determined to be B(J/psi -> eta'h(1)(1380)) x B(h(1)(1380) -> K*(892)K-+(-)+c.c.) = (1.51 +/- 0.09 +/- 0.21) x 10(-4) in eta'K+K-pi(0) mode and B(J/psi -> eta'h(1)(1380)) x B(h(1)(1380) -> K*(892)(K) over bar +c.c.) =(2.16 +/- 0.12 +/- 0.29) x 10(-4) in eta'(KSK +/-)-K-0 pi(-/+) mode. The first uncertainties are statistical and the second are systematic. Isospin symmetry violation is observed in the decays h(1)(1380) K*(892)K-+(-) + c.c. and h(1)(1380) -> K*(892)(0)(K) over bar (0) + c.c.. Based on the measured h(1)(1380) mass, the mixing angle between the states h(1)(1170) and h(1)(1380) is determined to be (35.9 +/- 2.6)degrees, consistent with theoretical expectations., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11125525, 11235011, 11322544, 11335008, 11425524, 11625523, 11635010, 11375170, 11275189, 11475164, 11475169, 11605196, 11605198, 11705192, 11735014]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Collaborative Innovation Center for Particles and Interactions (CICPI); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS [U1232201, U1332201, U1532257, U1532258, U1532102, U1732263]; CAS [KJCX2-YW-N29, KJCX2-YW-N45, QYZDJ-SSW-SLH003]; 100 Talents Program of CAS; National 1000 Talents Program of China; Institute of Nuclear and Particle Physics, Astronomy and Cosmology (INPAC); Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Swedish Resarch Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII Collaboration thanks the staff of BEPCII, the IHEP computing center and the supercomputing center of USTC for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11125525, No. 11235011, No. 11322544, No. 11335008, No. 11425524, No. 11625523, No. 11635010, No. 11375170, No. 11275189, No. 11475164, No. 11475169, No. 11605196, No. 11605198, No. 11705192, No. 11735014; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); the Collaborative Innovation Center for Particles and Interactions (CICPI); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1232201, No. U1332201, No. U1532257, No. U1532258, No. U1532102, No. U1732263; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45, No. QYZDJ-SSW-SLH003; 100 Talents Program of CAS; National 1000 Talents Program of China; Institute of Nuclear and Particle Physics, Astronomy and Cosmology (INPAC) and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contracts Nos. Collaborative Research Center CRC 1044, FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Natural Science Foundation of China (NSFC); National Science and Technology fund; The Swedish Resarch Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, No. DE-SC-0012069; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2018

44. Measurement of the Branching Fraction For the Semileptonic Decay D0(+) -> pi(-(0))mu(+)nu(mu) and Test of Lepton Flavor Universality

Author

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, Y. T., Guo, A. Q., Guo, R. P., Guo, Y. P., Haddadi, Z., Han, S., Hao, X. Q., Harris, F. A., He, K. L., He, X. Q., Heinsius, F. H., Held, T., Heng, Y. K., Holtmann, T., Hou, Z. L., Hu, H. M., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, X. Z., Huang, Z. L., Hussain, T., Andersson, W. Ikegami, Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Jin, Y., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Khan, T., Khoukaz, A., Kiese, P., Kliemt, R., Koch, L., Kolcu, O. B., Kopf, B., Kornicer, M., Kuemmel, M., Kuessner, M., Kuhlmann, M., Kupsc, A., Kuehn, W., Lange, J. S., Lara, M., Larin, P., Lavezzi, L., Leithoff, H., Leng, C., Li, C., Li, Cheng, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, H. J., Li, J. C., Li, Jin, Li, K. J., Li, Kang, Li, Ke, Li, Lei, Li, P. L., Li, P. R., Li, Q. Y., Li, W. D., Li, W. G., Li, X. L., Li, X. N., Li, X. Q., Li, Z. B., Liang, H., Liang, Y. F., Liang, Y. T., Liao, G. R., Lin, D. X., Liu, B., Liu, B. J., Liu, C. X., Liu, D., Liu, F. H., Liu, Fang, Liu, Feng, Liu, H. B., Liu, H. M., Liu, Huanhuan, Liu, Huihui, Liu, J. B., Liu, J. P., Liu, J. Y., Liu, K., Liu, K. Y., Liu, Ke, Liu, L. D., Liu, P. L., Liu, Q., Liu, S. B., Liu, X., Liu, Y. B., Liu, Z. A., Liu, Zhiqing, Long, Y. F., Lou, X. C., Lu, H. J., Lu, J. G., Lu, Y., Lu, Y. P., Luo, C. L., Luo, M. X., Luo, X. L., Lyu, X. R., Ma, F. C., Ma, H. L., Ma, L. L., Ma, M. M., Ma, Q. M., Ma, T., Ma, X. N., Ma, X. Y., Ma, Y. M., Maas, F. E., Maggiora, M., Malik, Q. A., Mao, Y. J., Mao, Z. P., Marcello, S., Meng, Z. X., Messchendorp, J. G., Mezzadri, G., Min, J., Min, T. J., Mitchell, R. E., Mo, X. H., Mo, Y. J., Morales, C. Morales, Muchnoi, N. Yu., Muramatsu, H., Musiol, P., Mustafa, A., Nefedov, Y., Nerling, F., Nikolaev, I. B., Ning, Z., Nisar, S., Niu, S. L., Niu, X. Y., Olsen, S. L., Ouyang, Q., Pacetti, S., Pan, Y., Papenbrock, M., Patteri, P., Pelizaeus, M., Pellegrino, J., Peng, H. P., Peters, K., Pettersson, J., Ping, J. L., Ping, R. G., Pitka, A., Poling, R., Prasad, V., Qi, H. R., Qi, M., Qian, S., Qiao, C. F., Qin, N., Qin, X. S., Qin, Z. H., Qiu, J. F., Rashid, K. H., Redmer, C. F., Richter, M., Ripka, M., Rolo, M., Rong, G., Rosner, Ch., Sarantsev, A., Savrie, M., Schnier, C., Schoenning, K., Shan, W., Shao, M., Shen, C. P., Shen, P. X., Shen, X. Y., Sheng, H. Y., Song, J. J., Song, W. M., Song, X. Y., Sosio, S., Sowa, C., Spataro, S., Sun, G. X., Sun, J. F., Sun, L., Sun, S. S., Sun, X. H., Sun, Y. J., Sun, Y. K., Sun, Y. Z., Sun, Z. J., Sun, Z. T., Tang, C. J., Tang, G. Y., Tang, X., Tapan, I., Tiemens, M., Tsednee, B., Uman, I., Varner, G. S., Wang, B., Wang, B. L., Wang, D., Wang, D. Y., Wang, Dan, Wang, K., Wang, L. L., Wang, L. S., Wang, M., Wang, Meng, Wang, P., Wang, P. L., Wang, W. P., Wang, X. F., Wang, Y., Wang, Y. D., Wang, Y. F., Wang, Y. Q., Wang, Z., Wang, Z. G., Wang, Z. Y., Wang, Zongyuan, Weber, T., Wei, D. H., Weidenkaff, P., Wen, S. P., Wiedner, U., Wolke, M., Wu, L. H., Wu, L. J., Wu, Z., Xia, L., Xia, Y., Xiao, D., Xiao, H., Xiao, Y. J., Xiao, Z. J., Xie, Y. G., Xie, Y. H., Xiong, X. A., Xiu, Q. L., Xu, G. F., Xu, J. J., Xu, L., Xu, Q. J., Xu, Q. N., Xu, X. P., Yan, L., Yan, W. B., Yan, W. C., Yan, Y. H., Yang, H. J., Yang, H. X., Yang, L., Yang, Y. H., Yang, Y. X., Ye, M., Ye, M. H., Yin, J. H., You, Z. Y., Yu, B. X., Yu, C. X., Yu, J. S., Yuan, C. Z., Yuan, Y., Yuncu, A., Zafar, A. A., Zeng, Y., Zeng, Z., Zhang, B. X., Zhang, B. Y., Zhang, C. C., Zhang, D. H., Zhang, H. H., Zhang, H. Y., Zhang, J., Zhang, J. L., Zhang, J. Q., Zhang, J. W., Zhang, J. Y., Zhang, J. Z., Zhang, K., Zhang, L., Zhang, S. Q., Zhang, X. Y., Zhang, Y. H., Zhang, Y. T., Zhang, Yang, Zhang, Yao, Zhang, Yu, Zhang, Z. H., Zhang, Z. P., Zhang, Z. Y., Zhao, G., Zhao, J. W., Zhao, J. Y., Zhao, J. Z., Zhao, Lei, Zhao, Ling, Zhao, M. G., Zhao, Q., Zhao, S. J., Zhao, T. C., Zhao, Y. B., Zhao, Z. G., Zhemchugov, A., Zheng, B., Zheng, J. P., Zheng, Y. H., Zhong, B., Zhou, L., Zhou, X., Zhou, X. K., Zhou, X. R., Zhou, X. Y., Zhou, Y. X., Zhu, J., Zhu, K., Zhu, K. J., Zhu, S., Zhu, S. H., Zhu, X. L., Zhu, Y. C., Zhu, Y. S., Zhu, Z. A., Zhuang, J., Zou, B. S., Zou, J. H., İstanbul Arel Üniversitesi, and [Ablikim, M. -- An, F. F. -- Bai, J. Z. -- Cai, X. -- Cao, G. F. -- Chang, J. F. -- Chen, G. -- Chen, H. S. -- Chen, J. C. -- Chen, M. L. -- Chen, Y. B. -- Dai, H. L. -- Deng, Z. Y. -- Dong, J. -- Dong, L. Y. -- Dong, M. Y. -- Duan, P. F. -- Fang, J. -- Fang, S. S. -- Fang, Y. -- Fu, C. D. -- Gao, Q. -- Gong, W. X. -- Gu, M. H. -- Guo, A. Q. -- Guo, R. P. -- He, K. L. -- Heng, Y. K. -- Hou, Z. L. -- Hu, H. M. -- Hu, T. -- Hu, Y. -- Ji, Q. -- Ji, X. B. -- Ji, X. L. -- Jiang, X. S. -- Jin, D. P. -- Jin, S. -- Kang, X. L. -- Li, F. -- Li, G. -- Li, H. B. -- Li, H. J. -- Li, J. C. -- Li, W. D. -- Li, W. G. -- Li, X. N. -- Liu, B. J. -- Liu, C. X. -- Liu, Fang -- Liu, H. M. -- Liu, Huanhuan -- Liu, J. Y. -- Liu, P. L. -- Liu, Z. A. -- Lou, X. C. -- Lu, J. G. -- Lu, Y. -- Lu, Y. P. -- Luo, X. L. -- Ma, H. L. -- Ma, M. M. -- Ma, Q. M. -- Ma, T. -- Ma, X. Y. -- Mao, Z. P. -- Min, J. -- Min, T. J. -- Mo, X. H. -- Ning, Z. -- Niu, S. L. -- Niu, X. Y. -- Ouyang, Q. -- Ping, R. G. -- Qian, S. -- Qin, Z. H. -- Qiu, J. F. -- Rong, G. -- Shen, X. Y. -- Sheng, H. Y. -- Song, X. Y. -- Sun, G. X. -- Sun, S. S. -- Sun, X. H. -- Sun, Y. Z. -- Sun, Z. J. -- Tang, G. Y. -- Tang, X. -- Wang, B. -- Wang, K. -- Wang, L. L. -- Wang, L. S. -- Wang, Meng -- Wang, P. -- Wang, P. L. -- Wang, Y. F. -- Wang, Z. -- Wang, Z. G. -- Wang, Z. Y. -- Wang, Zongyuan -- Wen, S. P. -- Wu, L. H. -- Wu, L. J. -- Wu, Z. -- Xiao, D. -- Xiao, Y. J. -- Xie, Y. G. -- Xiong, X. A. -- Xiu, Q. L. -- Xu, G. F. -- Xu, J. J. -- Xu, L. -- Yang, H. X. -- Ye, M. -- Yin, J. H. -- Yu, B. X. -- Yuan, C. Z. -- Yuan, Y. -- Zhang, B. X. -- Zhang, B. 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Baldini -- Bertani, M. -- Calcaterra, A. -- Felici, G. -- Patteri, P.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Italy -- [Pacetti, S.] Ist Nazl Fis Nucl, I-06100 Perugia, Italy -- [Pacetti, S.] Univ Perugia, I-06100 Perugia, Italy -- [Bettoni, D. -- Cibinetto, G. -- Farinelli, R. -- Fioravanti, E. -- Garzia, I.] Ist Nazl Fis Nucl, Sez Ferrara, I-44122 Ferrara, Italy -- [Farinelli, R. -- Mezzadri, G. -- Savrie, M.] Univ Ferrara, I-44122 Ferrara, Italy -- [Tsednee, B.] Inst Phys & Technol, Peace Ave 54B, Ulaanbaatar 13330, Mongol Peo Rep -- [Berger, N. -- Denig, A. -- Fegan, S. -- Feldbauer, F. -- Fritsch, M. -- Gradl, W. -- Guo, Y. P. -- Kiese, P. -- Leithoff, H. -- Liu, Zhiqing -- Pitka, A. -- Redmer, C. F. -- Ripka, M. -- Wang, Y. 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P.] Soochow Univ, Suzhou 215006, Peoples R China -- [Bai, Y.] Southeast Univ, Nanjing 211100, Jiangsu, Peoples R China -- [An, Q. -- Cai, X. -- Chang, J. F. -- Chen, M. L. -- Chen, Y. B. -- Dai, H. L. -- Dong, J. -- Dong, M. Y. -- Fang, J. -- Feng, C. Q. -- Gao, X. L. -- Gao, Z. -- Gong, W. X. -- Gu, M. H. -- Heng, Y. K. -- Hu, T. -- Huang, G. S. -- Ji, X. L. -- Jiang, X. S. -- Jin, D. P. -- Khan, T. -- Li, Cheng -- Li, F. -- Li, P. L. -- Li, X. N. -- Liang, H. -- Liu, D. -- Liu, J. B. -- Liu, P. L. -- Liu, S. B. -- Liu, Z. A. -- Lou, X. C. -- Lu, J. G. -- Lu, Y. P. -- Luo, X. L. -- Ma, X. Y. -- Min, J. -- Mo, X. H. -- Ning, Z. -- Niu, S. L. -- Ouyang, Q. -- Pan, Y. -- Peng, H. P. -- Prasad, V. -- Qian, S. -- Qin, Z. H. -- Shao, M. -- Sun, Y. J. -- Sun, Y. K. -- Sun, Z. J. -- Wang, K. -- Wang, W. P. -- Wang, Y. -- Wang, Y. F. -- Wang, Z. -- Wang, Z. G. -- Wu, Z. -- Xia, L. -- Xie, Y. G. -- Xiu, Q. L. -- Yan, W. B. -- Ye, M. -- Yu, B. X. -- Zeng, Z. -- Zhang, B. Y. -- Zhang, H. 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Abstract

WOS: 000448463300006, PubMed ID: 30411926, Using a data sample corresponding to an integrated luminosity of 2.93 fb(-1) taken at a center-of-mass energy of 3.773 GeV with the BESIII detector operated at the BEPCII collider, we perform an analysis of the semileptonic decays D0(+) -> pi(-(0))mu(+)nu(mu) . The branching fractions of D-0 -> pi(-)mu(+)nu(mu), and D+ -> pi(0)mu(+)nu(mu) are measured to be (0.272 +/- 0.008(start) +/- 0.006(syst))% and (0.350 +/- 0.011(star) +/- 0.010(syst))%, respectively, where the former is of much improved precision compared to previous results and the latter is determined for the first time. Using these results along with previous BESIII measurements of D0(+) -> pi(-(0))e(+)nu(e), we calculate the branching fraction ratios to be R-0 BD0 -> pi(-)mu(+)nu mu BD0 -> pi(-)e(+)nu e=0.922 +/- 0.030(start) +/- 0.022(syst) and R+ BD+ -> pi(0)mu(+)nu mu/BD+ -> pi(0)e(+)nu e= 0.964 +/- 0.037(start) +/- 0.026(syst), which arc compatible with the theoretical expectation of lepton flavor universality within 1.7 sigma and 0.5 sigma, respectively. We also examine the branching fraction ratios in different four-momentum transfer square regions, and find no significant deviations from the standard model predictions., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11235011, 11305180, 11335008, 11375170, 11425524, 11475123, 11475164, 11475169, 11605196, 11605198, 11625523, 11635010, 11705192]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); NSFC [U1332201, U1532101, U1532102, U1532257, U1532258, U1732263]; CAS [U1332201, U1532101, U1532102, U1532257, U1532258, U1732263, KJCX2-YW-N29, KJCX2-YW-N45, QYZDJ-SSW-SLH003]; 100 Talents Program of CAS; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Science and Technology fund; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0]; National 1000 Talents Program of China; INPAC, The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. Authors thanks S. Simula, L. Riggio, G. Salerno, and Wei Wang for helpful discussions. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11235011, No. 11305180, No. 11335008, No. 11375170, No. 11425524, No. 11475123, No. 11475164, No. 11475169, No. 11605196, No. 11605198, No. 11625523, No. 11635010, No. 11705192; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1332201, No. U1532101, No. U1532102, No. U1532257, No. U1532258, No. U1732263; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45, and No. QYZDJ-SSW-SLH003; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contracts No. Collaborative Research Center CRC 1044, No. FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Science and Technology fund; The Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2018

45. Amplitude analysis of the KSKS system produced in radiative J /psi decays

Author

Ablikim, M., Achasov, M. N., Ahmed, S., Albrecht, M., Amoroso, A., An, F. F., An, Q., Bai, Y., Bakina, O., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Berger, N., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chai, J., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, J. C., Chen, M. L., Chen, P. L., Chen, S. J., Chen, X. R., Chen, Y. B., Chen, Z. C., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fegan, S., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, Y., Gao, Y. G., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. 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Subjects
Subatomär fysik, Astronomi, astrofysik och kosmologi, Subatomic Physics, Astronomy, Astrophysics and Cosmology, High Energy Physics::Experiment
Abstract

WOS: 000447187400001, An amplitude analysis of the KSKS system produced in radiative J/psi decays is performed using the (1310.6 +/- 7.0) x 10(6) nip decays collected by the BESIII detector. Two approaches are presented. A mass-dependent analysis is performed by parametrizing the KSKS invariant mass spectrum as a sum of Breit-aligner line shapes. Additionally, a mass-independent analysis is performed to extract a piecewise function that describes the dynamics of the KSKS system while making minimal assumptions about the properties and number of poles in the amplitude. The dominant amplitudes in the mass-dependent analysis include the f(0)(1710), f(0)(2200), and f(2)'(1525). The mass-independent results, which are made available as input for further studies, are consistent with those of the mass-dependent analysis and are useful for a systematic study of hadronic interactions. The branching fraction of radiative J/psi decays to KSKS is measured to be (8.1 +/- 0.4) x 10(-4), where the uncertainty is systematic and the statistical uncertainty is negligible., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11235011, 11335008, 11425524, 11625523, 11635010, 11675183, 11735014]; National Key' Research and Development Program of China [2017YFB0203200]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Fund of the NSFC [U1332201, U1532257, U1532258]; Joint Large-Scale Scientific Facility Fund of the CAS [U1332201, U1532257, U1532258]; CAS [KJCX2-YW-N29, KJCX2-YW-N45, QYZDJ-SSW-SLH003]; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation (DFG) [CRC 1044, FOR 2359]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; NSFC [11505034, 11575077]; National Science and Technology fund; Swedish Research Council; U.S. Department of Energy [DE-FG02-05ER41374, DE-SC-0010118, DE-SC-0010504, DE-SC-0012069]; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; World Class University (WCU) Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11235011, No. 11335008, No. 11425524, No. 11625523, No. 11635010, No. 11675183, No. 11735014; National Key' Research and Development Program of China Grant No. 2017YFB0203200; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. U1332201, No. U1532257, No. U1532258; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45, No. QYZDJ-SSW-SLH003; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation (DFG) under Contracts No. Collaborative Research Center CRC 1044 and No. FOR 2359; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; NSFC under Contracts No. 11505034 and No. 11575077; National Science and Technology fund; the Swedish Research Council; U.S. Department of Energy under Contracts No. DE-FG02-05ER41374, No. DE-SC-0010118, No. DE-SC-0010504, and No. DE-SC-0012069; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; and World Class University (WCU) Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2018

46. Measurement of the absolute branching fraction of D-vertical bar -> (K)over-bar(0)e(vertical bar) nu(e) via (K)over-bar(0) -> pi(0)pi(0)

Author

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Subjects
Semileptonic decays, E(+)E(-), Physics, semileptonic decays, Monte-carlo, Physics, particles & fields, Absolute branching fraction, Physics, nuclear, Charmed mesons, CP Violation, Deterioration, CKM Matrix, charmed mesons, BESIII/BEPCII, absolute branching fraction
Abstract

WOS: 000389144400002, By analyzing 2.93 fb(-1) data collected at the center-of-mass energy root s = 3.773 GeV with the BESIII detector, we measure the absolute branching fraction of the semileptonic decay D+ -> (K) over bar (0)e(+)nu(e) to be B(D (+) -> (K) over bar (0)e(+)nu(e)) = (8.59 +/- 0.14 +/- 0.21)% using (K) over bar (0) -> K-S(0) -> pi(0) pi(0), where the first uncertainty is statistical and the second systematic. Our result is consistent with previous measurements within uncertainties.., National Key Basic Research Program of China [2009CB825204, 2015CB856700]; National Natural Science Foundation of China (NSFC) [10935007, 11125525, 11235011, 11305180, 11322544, 11335008, 11425524, 11475123, 11405046, U1332103]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Collaborative Innovation Center for Particles and Interactions (CICPI); Joint Large-Scale Scientific Facility Funds of NSFC [11179007, U1232201, U1332201, U1532101]; Joint Large-Scale Scientific Facility Funds of CAS [KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; National 1000 Talents Program of China; IN-PAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG (Collaborative Research Center) [CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; National Natural Science Foundation of China (NSFC); Russian Foundation for Basic Research [14-07-91152]; Swedish Resarch Council; U. S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-SC0012069, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], Supported by National Key Basic Research Program of China (2009CB825204, 2015CB856700), National Natural Science Foundation of China (NSFC) (10935007, 11125525, 11235011, 11305180, 11322544, 11335008, 11425524, 11475123), Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program, CAS Center for Excellence in Particle Physics (CCEPP), Collaborative Innovation Center for Particles and Interactions (CICPI), Joint Large-Scale Scientific Facility Funds of NSFC and CAS (11179007, U1232201, U1332201, U1532101), CAS (KJCX2-YW-N29, KJCX2-YW-N45), 100 Talents Program of CAS, National 1000 Talents Program of China, IN-PAC and Shanghai Key Laboratory for Particle Physics and Cosmology, German Research Foundation DFG (Collaborative Research Center CRC-1044), Istituto Nazionale di Fisica Nucleare, Italy, Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) (530-4CDP03), Ministry of Development of Turkey (DPT2006K-120470), National Natural Science Foundation of China (NSFC) (11405046, U1332103), Russian Foundation for Basic Research (14-07-91152), Swedish Resarch Council, U. S. Department of Energy (DE-FG02-04ER41291, DE-FG02-05ER41374, DE-SC0012069, DESC0010118), U.S. National Science Foundation, University of Groningen (RuG) and Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt, WCU Program of National Research Foundation of Korea (R32-2008-000-10155-0).

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2016
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47. Measurement of the branching fraction for psi(3770) -> gamma chi c0

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Ablikim, M, Achasov, MN, Ai, XC, Albayrak, O, Albrecht, M, Ambrose, DJ, Amoroso, A, An, FF, An, Q, Bai, JZ, Ferroli, RB, Ban, Y, Bennett, DW, Bennett, JV, Bertani, M, Bettoni, D, Bian, JM, Bianchi, E, Boger, E, Boyko, I, Briere, RA, Cai, H, Cai, X, Cakir, O, Calcaterra, A, Cao, GF, Cetin, SA, Chang, JF, Chelkov, G, Chen, G, Chen, HS, Chen, HY, Chen, JC, Chen, ML, Chen, SJ, Chen, X, Chen, XR, Chen, YB, Cheng, HP, Chu, XK, Cibinetto, G, Dai, HL, Dai, JP, Dbeyssi, A, Dedovich, D, Deng, ZY, Denig, A, Denysenko, I, Destefanis, M, De Mori, F, Ding, Y, Dong, C, Dong, J, Dong, LY, Dong, MY, Dou, ZL, Du, SX, Duan, PF, Eren, EE, Fan, JZ, Fang, J, Fang, SS, Fang, X, Fang, Y, Farinelli, R, Fava, L, Fedorov, O, Feldbauer, F, Felici, G, Feng, CQ, Fioravanti, E, Fritsch, M, Fu, CD, Gao, Q, Gao, XL, Gao, XY, Gao, Y, Gao, Z, Garzia, I, Goetzen, K, Gong, L, Gong, WX, Gradl, W, Greco, M, Gu, MH, Gu, YT, Guan, YH, Guo, AQ, Guo, LB, Guo, Y, Guo, YP, Haddadi, Z, Hafner, A, Han, S, Hao, XQ, Harris, FA, He, KL, Held, T, Heng, YK, Hou, ZL, Hu, C, Hu, HM, Hu, JF, Hu, T, Hu, Y, Huang, GS, Huang, JS, Huang, XT, Huang, Y, Hussain, T, Ji, Q, Ji, QP, Ji, XB, Ji, XL, Jiang, LW, Jiang, XS, Jiang, XY, Jiao, JB, Jiao, Z, Jin, DP, Jin, S, Johansson, T, Julin, A, Kalantar-Nayestanaki, N, Kang, XL, Kang, XS, Kavatsyuk, M, Ke, BC, Kiese, R, Kliemt, R, Kloss, B, Kolcu, OB, Kopf, B, Kornicer, M, Kuehn, W, Kupsc, A, Lange, JS, Lara, M, Larin, R, Leng, C, Li, C, Li, DM, Li, F, Li, FY, Li, G, Li, HB, Li, JC, Li, J, Li, K, Li, L, Li, PR, Li, QY, Li, T, Li, WD, Li, WG, Li, XL, Li, XM, Li, XN, Li, XQ, Li, ZB, Liang, H, Liang, YF, Liang, YT, Liao, GR, Lin, DX, Liu, BJ, Liu, CX, Liu, D, Liu, FH, Liu, F, Liu, HB, Liu, HH, Liu, HM, Liu, J, Liu, JB, Liu, JP, Liu, JY, Liu, K, Liu, KY, Liu, LD, Liu, PL, Liu, Q, Liu, SB, Liu, X, Liu, YB, Liu, ZA, Liu, Z, Loehner, H, Lou, XC, Lu, HJ, Lu, JG, Lu, Y, Lu, YP, Luo, CL, Luo, MX, Luo, T, Luo, XL, Lyu, XR, Ma, FC, Ma, HL, Ma, LL, Ma, QM, Ma, T, Ma, XN, Ma, XY, Ma, YM, Maas, FE, Maggiura, M, Mao, YJ, Mao, ZP, Marcello, S, Messchendorp, JG, Min, J, Mitchell, RE, Mo, XH, Mo, YJ, Morales, CM, Muchnoi, NY, Muramatsu, H, Nefedov, Y, Nerling, F, Nikolaev, IB, Ning, Z, Nisar, S, Niu, SL, Niu, XY, Olsen, SL, Ouyang, Q, Pacetti, S, Pan, Y, Patteri, R, Pelizaeus, M, Peng, HP, Peters, K, Pettersson, J, Ping, JL, Ping, RG, Poling, R, Prasad, V, Qi, HR, Qi, M, Qian, S, Qiao, CF, Qin, LQ, Qin, N, Qin, XS, Qin, ZH, Qiu, JF, Rashid, KH, Redmer, CF, Ripka, M, Rong, G, Rosner, C, Ruan, XD, Santoro, V, Sarantsev, A, Savrie, M, Schoenning, K, Schumann, S, Shan, W, Shao, M, Shen, CP, Shen, PX, Shen, XY, Sheng, HY, Song, WM, Song, XY, Sosio, S, Spataro, S, Sun, GX, Sun, JF, Sun, SS, Sun, YJ, Sun, YZ, Sun, ZJ, Sun, ZT, Tang, CJ, Tang, X, Tapan, I, Thorndike, EH, Tiemens, M, Ullrich, M, Uman, I, Varner, GS, Wang, B, Wang, BL, Wang, D, Wang, DY, Wang, K, Wang, LL, Wang, LS, Wang, M, Wang, R, Wang, PL, Wang, SG, Wang, W, Wang, WP, Wang, XF, Wang, YD, Wang, YF, Wang, YQ, Wang, Z, Wang, ZG, Wang, ZH, Wang, ZY, Weber, T, Wei, DH, Wei, JB, Weidenkaff, R, Wen, SP, Wiedner, U, Wolke, M, Wu, LH, Wu, Z, Xia, L, Xia, LG, Xia, Y, Xiao, D, Xiao, H, Xiao, ZJ, Xie, YG, Xiu, QL, Xu, GF, Xu, L, Xu, QJ, Xu, QN, Xu, XP, Yan, L, Yan, WB, Yan, WC, Yan, YH, Yang, HJ, Yang, HX, Yang, L, Yang, YX, Ye, M, Ye, MH, Yin, JH, Yu, BX, Yu, CX, Yu, JS, Yuan, CZ, Yuan, WL, Yuan, Y, Yuncu, A, Zafar, AA, Zallo, A, Zeng, Y, Zeng, Z, Zhang, BX, Zhang, BY, Zhang, C, Zhang, CC, Zhang, DH, Zhang, HH, Zhang, HY, Zhang, JJ, Zhang, JL, Zhang, JQ, Zhang, JW, Zhang, JY, Zhang, JZ, Zhang, K, Zhang, L, Zhang, XY, Zhang, Y, Zhang, YH, Zhang, YN, Zhang, YT, Zhang, ZH, Zhang, ZP, Zhang, ZY, Zhao, G, Zhao, JW, Zhao, JY, Zhao, JZ, Zhao, L, Zhao, MG, Zhao, Q, Zhao, QW, Zhao, SJ, Zhao, TC, Zhao, YB, Zhao, ZG, Zhemchugov, A, Zheng, B, Zheng, JP, Zheng, WJ, Zheng, YH, Zhong, B, Zhou, L, Zhou, X, Zhou, XK, Zhou, XR, Zhou, XY, Zhu, K, Zhu, KJ, Zhu, S, Zhu, SH, Zhu, XL, Zhu, YC, Zhu, YS, Zhu, ZA, Zhuang, J, Zotti, L, Zou, BS, Zou, JH, Collaboration, BESIII, İstanbul Arel Üniversitesi, and [Ablikim, M. -- Ai, X. 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Abstract

WOS: 000368783600015, By analyzing a data set of 2.92 fb(-1) of e(+) e(-) collision data taken at root s = 3.773 GeVand 106.41 x 10(6) psi(3686) decays taken at root s = 3.686 GeVwith the BESIII detector at the BEPCII collider, we measure the branching fraction and the partial decay width for psi(3770)->gamma chi c0 to be B(psi(3770)->gamma chi c0) = (6.88 +/- 0.28 +/- 0.67) x 10(-3) and Gamma[psi(3770)->gamma chi c0] = (187 +/- 8 +/- 19) keV, respectively. These are the most precise measurements to date. (C) 2015 The Authors. Published by Elsevier B.V., National Key Basic Research Program of China [2009CB825204, 2015CB856700]; National Natural Science Foundation of China (NSFC) [10935007, 11125525, 11235011, 11305180, 11322544, 11335008, 11425524]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; NSFC [11179007, U1232201, U1332201]; CAS [11179007, U1232201, U1332201, KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; CAS Center for Excellence in Particle Physics (CCEPP); INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Collaborative Research Center [CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fur Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by the National Key Basic Research Program of China under Contract Nos. 2009CB825204 and 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts Nos. 10935007, 11125525, 11235011, 11305180, 11322544, 11335008, 11425524; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts Nos. 11179007, U1232201, U1332201; CAS under Contracts Nos. KJCX2-YW-N29, KJCX2-YW-N45; 100 Talents Program of CAS; the CAS Center for Excellence in Particle Physics (CCEPP); INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Collaborative Research Center Contract No. CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; U.S. Department of Energy under Contracts Nos. DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fur Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

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2016
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48. Measurements of absolute hadronic branching fractions of the lambda(+)(c) baryon

Author

Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, H. Y., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Cheng, H. P., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Eren, E. E., Fan, J. Z., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fedorov, O., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, X. 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C. -- Zhuang, J.] State Key Lab Particle Detect & Elect, Beijing 100049, Peoples R China -- [Yuncu, A.] Bogazici Univ, TR-34342 Istanbul, Turkey -- [Boger, E. -- Chelkov, G. -- Zhemchugov, A.] Moscow Inst Phys & Technol, Moscow 141700, Russia -- [Chelkov, G.] Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia -- [Achasov, M. N. -- Muchnoi, N. Yu. -- Nikolaev, I. B.] Novosibirsk State Univ, Novosibirsk 630090, Russia -- [Sarantsev, A.] NRC Kurchatov Inst, PNPI, Gatchina 188300, Russia -- [Lou, X. C.] Univ Texas Dallas, Dallas, TX 75083 USA -- [Kolcu, O. B.] Istanbul Arel Univ, TR-34295 Istanbul, Turkey

Subjects
Hadronic decays, Germanium compounds, Physics, Deterioration, Elementary Particles, Octets, Hadronic branching fractions, Uncertainty analysis, Branching fractions, Measurements of, Decay, Hadrons, Global least squares, Decay mode, Physics, multidisciplinary
Abstract

WOS: 000369495000005, PubMed ID: 26894702, We report the first measurement of absolute hadronic branching fractions of Lambda(+)(c) baryon at the Lambda(+)(c)(Lambda) over bar (-)(c) production threshold, in the 30 years since the Lambda(+)(c) discovery. In total, 12 Cabibbo-favored Lambda(+)(c) hadronic decay modes are analyzed with a double-tag technique, based on a sample of 567 pb(-1) of e(+)e(-) collisions at root s = 4.599 GeV recorded with the BESIII detector. A global least-squares fitter is utilized to improve the measured precision. Among the measurements for twelve Lambda(+)(c) decay modes, the branching fraction for Lambda(+)(c) -> pK(-)pi(+) is determined to be (5.84 +/- 0.27 +/- 0.23)%, where the first uncertainty is statistical and the second is systematic. In addition, the measurements of the branching fractions of the other 11 Cabibbo-favored hadronic decay modes are significantly improved., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11125525, 11235011, 11275266, 11322544, 11335008, 11425524, 11405046, U1332103]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics (CCEPP); Collaborative Innovation Center for Particles and Interactions (CICPI); Joint Large-Scale Scientific Facility Funds of the NSFC; CAS [11179007, U1232201, U1332201, KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC; Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [Collaborative Research Center CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) [530-4CDP03]; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; Swedish Resarch Council; U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-SC0012069, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG); Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII Collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11125525, No. 11235011, No. 11275266, No. 11322544, No. 11335008, and No. 11425524; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics (CCEPP); the Collaborative Innovation Center for Particles and Interactions (CICPI); Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. 11179007, No. U1232201, and No. U1332201; CAS under Contracts No. KJCX2-YW-N29 and No. KJCX2-YW-N45; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Koninklijke Nederlandse Akademie van Wetenschappen (KNAW) under Contract No. 530-4CDP03; Ministry of Development of Turkey under Contract No. DPT2006K-120470; National Natural Science Foundation of China (NSFC) under Contracts No. 11405046 and No. U1332103; Russian Foundation for Basic Research under Contract No. 14-07-91152; The Swedish Resarch Council; U.S. Department of Energy under Contracts No. DE-FG02-04ER41291, No. DE-FG02-05ER41374, No. DE-SC0012069, and No. DESC0010118; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; and WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2016

49. Observation of e(+)e(-) -> omega chi(c1,2) near root s=4.42 and 4.6 GeV

Author

Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, H. Y., Chen, J. C., Chen, M. L., Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Cheng, H. P., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Dou, Z. L., Du, S. X., Duan, P. F., Eren, E. E., Fan, J. Z., Fang, J., Fang, S. S., Fang, X., Fang, Y., Farinelli, R., Fava, L., Fedorov, O., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, X. Y., Gao, Y., Gao, Z., Garzia, I., Goetzen, K., Gong, L., Gong, W. X., Gradl, W., Greco, M., Gu, M. H., Gu, Y. T., Guan, Y. H., Guo, A. Q., Guo, L. B., Guo, Y., Guo, Y. P., Haddadi, Z., Hafner, A., Han, S., Hao, X. Q., Harris, F. A., He, K. L., Held, T., Heng, Y. K., Hou, Z. L., Hu, C., Hu, H. M., Hu, J. F., Hu, T., Hu, Y., Huang, G. S., Huang, J. S., Huang, X. T., Huang, Y., Hussain, T., Ji, Q., Ji, Q. P., Ji, X. B., Ji, X. L., Jiang, L. W., Jiang, X. S., Jiang, X. Y., Jiao, J. B., Jiao, Z., Jin, D. P., Jin, S., Johansson, T., Julin, A., Kalantar-Nayestanaki, N., Kang, X. L., Kang, X. S., Kavatsyuk, M., Ke, B. C., Kiese, P., Kliemt, R., Kloss, B., Kolcu, O. B., Kopf, B., Kornicer, M., Kuehn, W., Kupsc, A., Lange, J. S., Lara, M., Larin, P., Leng, C., Li, C., Li, C. H., Li, Cheng, Li, D. M., Li, F., Li, F. Y., Li, G., Li, H. B., Li, J. C., Li, Jin, Li, K., Li, Lei, Li, P. R., Li, Q. Y., Li, T., Li, W. D., Li, W. G., Li, X. L., Li, X. M., Li, X. N., Li, X. Q., Li, Z. 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H.] Univ Rochester, Rochester, NY 14627 USA -- [Zhu, S. H.] Univ Sci & Technol Liaoning, Anshan 114051, Liaoning, Peoples R China -- [An, Q. -- Fang, X. -- Feng, C. Q. -- Gao, X. L. -- Gao, Z. -- Huang, G. S. -- Li, Cheng -- Liang, H. -- Liu, D. -- Liu, J. B. -- Liu, S. B. -- Pan, Y. -- Peng, H. P. -- Shao, M. -- Sun, Y. J. -- Wang, W. P. -- Wang, Z. H. -- Xia, L. -- Yan, W. B. -- Yan, W. C. -- Zeng, Z. -- Zhang, Y. T. -- Zhang, Z. P. -- Zhao, Lei -- Zhao, Z. G. -- Zhou, X. K. -- Zhou, X. R. -- Zhu, Y. C.] Univ Sci & Technol China, Anhua 230026, Peoples R China -- [Xiao, H. -- Zheng, B.] Univ South China, Hengyang 421001, Peoples R China -- [Hussain, T. -- Rashid, K. H. -- Zafar, A. A.] Univ Punjab, Lahore 54590, Pakistan -- [Amoroso, A. -- Bianchi, F. -- Destefanis, M. -- De Mori, F. -- Greco, M. -- Hu, J. 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B.] Istanbul Arel Univ, TR-34295 Istanbul, Turkey -- [Chelkov, G.] Moscow Inst Phys & Technol, Dolgoprudnyi 141700, Russia -- [Chelkov, G.] Tomsk State Univ, Funct Elect Lab, Tomsk 634050, Russia

Subjects
Physics, Charmonium, Deterioration, Mesons, Astronomy & astrophysics, Physics, particles & fields
Abstract

WOS: 000368324600002, Based on data samples collected with the BESIII detector operating at the BEPCII storage ring at center-of-mass energies root s > 4.4 GeV, the processes e(+)e(-) -> omega chi(c1,2) are observed for the first time. With an integrated luminosity of 1074 pb(-1) near root s = 4.42 GeV, a significant omega chi(c2) signal is found, and the cross section is measured to be (20.9 +/- 3.2 +/- 2.5) pb. With 567 pb(-1) near root s = 4.6 GeV, a clear omega chi(c2) signal is seen, and the cross section is measured to be (9.5 +/- 2.1 +/- 1.3) pb, while evidence is found for an omega chi(c2) signal. The first errors are statistical, and the second are systematic. Due to low luminosity or low cross section at other energies, no significant signals are observed. In the omega chi(c2) cross section, an enhancement is seen around root s = 4.42 GeV. Fitting the cross section with a coherent sum of the psi(4415) Breit-Wigner function and a phase-space term, the branching fraction B(psi(4415) -> omega chi(c2)) is obtained to be of the order of 10(-3)., National Key Basic Research Program of China [2015CB856700]; National Natural Science Foundation of China (NSFC) [11125525, 11235011, 11322544, 11335008, 11425524]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; NSFC [11179007, U1232201, U1332201]; CAS [11179007, U1232201, U1332201, KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [Collaborative Research Center CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; U.S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-FG02-94ER40823, DESC0010118]; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII collaboration thanks the staff of BEPCII and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contract No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 11125525, No. 11235011, No. 11322544, No. 11335008, No. 11425524; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. 11179007, No. U1232201, No. U1332201; CAS under Contracts No. KJCX2-YW-N29, No. KJCX2-YW-N45; 100 Talents Program of CAS; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; U.S. Department of Energy under Contracts No. DE-FG02-04ER41291, No. DE-FG02-05ER41374, No. DE-FG02-94ER40823, No. DESC0010118; U.S. National Science Foundation; University of Groningen (RuG) and the Helmholtzzentrum fuer Schwerionenforschung GmbH (GSI), Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2016

50. Study of D+ -> K-pi(+)e(+)nu(e)

Author

Ablikim, M., Achasov, M. N., Ai, X. C., Albayrak, O., Albrecht, M., Ambrose, D. J., Amoroso, A., An, F. F., An, Q., Bai, J. Z., Ferroli, R. Baldini, Ban, Y., Bennett, D. W., Bennett, J. V., Bertani, M., Bettoni, D., Bian, J. M., Bianchi, F., Boger, E., Boyko, I., Briere, R. A., Cai, H., Cai, X., Cakir, O., Calcaterra, A., Cao, G. F., Cetin, S. A., Chang, J. F., Chelkov, G., Chen, G., Chen, H. S., Chen, H. Y., Chen, J. C., Chen, M. L., Chen, S. Chen, Chen, S. J., Chen, X., Chen, X. R., Chen, Y. B., Cheng, H. P., Chu, X. K., Cibinetto, G., Dai, H. L., Dai, J. P., Dbeyssi, A., Dedovich, D., Deng, Z. Y., Denig, A., Denysenko, I., Destefanis, M., De Mori, F., Ding, Y., Dong, C., Dong, J., Dong, L. Y., Dong, M. Y., Du, S. X., Duan, P. F., Fan, J. Z., Fang, J., Fang, S. S., Fang, X., Fang, Y., Fava, L., Feldbauer, F., Felici, G., Feng, C. Q., Fioravanti, E., Fritsch, M., Fu, C. D., Gao, Q., Gao, X. L., Gao, X. Y., Gao, Y., Gao, Z., Garzia, I., Goetzen, K., Gong, W. 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Abstract

WOS: 000380961000002, We present an analysis of the decay D+ -> K-pi(+)e(+)nu(e) based on data collected by the BESIII experiment at the psi(3770) resonance. Using a nearly background-free sample of 18262 events, we measure the branching fraction B(D+ -> K-pi+e+nu e) = (3.77 +/- 0.03 +/- 0.08)%. For 0.8 < m(K pi) < 1.0 GeV/c(2), the partial branching fraction is B(D+ -> K-pi+e+nu e)([0.8,1.0]) = (3.39 +/- 0.03 +/- 0.08)%. A partial wave analysis shows that the dominant (K) over bar* (892)degrees component is accompanied by an S-wave contribution accounting for (6.05 +/- 0.22 +/- 0.18)% of the total rate and that other components are negligible. The parameters of the (K) over bar* (892)degrees resonance and of the form factors based on the spectroscopic pole dominance predictions are also measured. We also present a measurement of the (K) over bar* (892)degrees helicity basis form factors in a model-independent way., National Key Basic Research Program of China [2009CB825204, 2015CB856700]; National Natural Science Foundation of China (NSFC) [10935007, 11075174, 11121092, 11235011, 11125525, 11322544, 11335008, 11425524, 11475185]; Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; CAS Center for Excellence in Particle Physics; Collaborative Innovation Center for Particles and Interactions; Joint Large-Scale Scientific Facility Funds of the NSFC; CAS [11179007, U1232201, U1332201, KJCX2-YW-N29, KJCX2-YW-N45]; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG [Collaborative Research Center CRC-1044]; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey [DPT2006K-120470]; Russian Foundation for Basic Research [14-07-91152]; Swedish Resarch Council; U. S. Department of Energy [DE-FG02-04ER41291, DE-FG02-05ER41374, DE-SC0012069, DESC0010118]; U.S. National Science Foundation; University of Groningen; Helmholtzzentrum fuer Schwerionenforschung GmbH, Darmstadt; WCU Program of National Research Foundation of Korea [R32-2008-000-10155-0], The BESIII Collaboration thanks the staff of Beijing Electron-Positron Collider II and the IHEP computing center for their strong support. This work is supported in part by National Key Basic Research Program of China under Contracts No. 2009CB825204 and No. 2015CB856700; National Natural Science Foundation of China (NSFC) under Contracts No. 10935007, No. 11075174, No. 11121092, No. 11235011, No. 11125525, No. 11322544, No. 11335008, No. 11425524, and No. 11475185; the Chinese Academy of Sciences (CAS) Large-Scale Scientific Facility Program; the CAS Center for Excellence in Particle Physics; the Collaborative Innovation Center for Particles and Interactions; Joint Large-Scale Scientific Facility Funds of the NSFC and CAS under Contracts No. 11179007, No. U1232201, and No. U1332201; CAS under Contracts No. KJCX2-YW-N29 and No. KJCX2-YW-N45; 100 Talents Program of CAS; National 1000 Talents Program of China; INPAC and Shanghai Key Laboratory for Particle Physics and Cosmology; German Research Foundation DFG under Contract No. Collaborative Research Center CRC-1044; Istituto Nazionale di Fisica Nucleare, Italy; Ministry of Development of Turkey under Contract No. DPT2006K-120470; Russian Foundation for Basic Research under Contract No. 14-07-91152; The Swedish Resarch Council; U. S. Department of Energy under Contracts No. DE-FG02-04ER41291, No. DE-FG02-05ER41374, No. DE-SC0012069, and No. DESC0010118; U.S. National Science Foundation; University of Groningen and the Helmholtzzentrum fuer Schwerionenforschung GmbH, Darmstadt; WCU Program of National Research Foundation of Korea under Contract No. R32-2008-000-10155-0.

Published
2016

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