Search

Your search keyword '"Jun-Yi Zhang"' showing total 255 results
Start Over Author "Jun-Yi Zhang"
255 results on '"Jun-Yi Zhang"'

1. Gastrochilus balangshanensis (Orchidaceae, Aeridinae), a new subalpine epiphytic orchid from the Mountains of Southwest China

Author

Jun-Yi Zhang, Yue-Hong Cheng, Min Liao, Sen-Long Jin, Hong-Qiang Lin, Pan-Yan Yang, Hai He, and Bo Xu

Subjects
Botany, QK1-989
Abstract

Gastrochilus balangshanensis, a new orchid species from the Balang Mountain, Sichuan Province, Southwest China, is described and illustrated. It morphologically resembles G. affinis, but differs in having shorter stems, a reniform epichile and a sub-hemispherical hypochile (spur), obtuse-rounded at the apex. The results of molecular phylogenetic analyses based on nuclear ribosome internal transcribed spacer (nrITS) and four chloroplast DNA markers (matK, psbA–trnH, psbM–trnD and trnL–F) from 50 Gastrochilus species indicate that G. balangshanensis is closely related to G. heminii and G. bernhardtianus, also endemic to the Hengduan Mountains. The novelty is a branch and trunk epiphyte in mixed coniferous forest.

Published
2024
Full Text
View/download PDF

2. The complete chloroplast genome sequence of Lilium saccatum S. Yun Liang (Liliaceae, Lilieae) and its phylogenetic analysis

Author

Xuan Zhou, Jian-Hua Ma, Jun-Yi Zhang, Li Luan, Lin Li, Yun-Dong Gao, and Yu Feng

Subjects
Chloroplast genome, Lilium saccatum, phylogeny, Genetics, QH426-470
Abstract

Lilium saccatum is a species of ornamental plant found in southeastern Xizang, China. In the present study, the complete chloroplast (cp) genome of L. saccatum was sequenced using next-generation sequencing (NGS). The de novo assembled cp genome was 151,839 bp in length, including a pair of inverted repeat regions (IRs; 26,421 bp), a small single-copy region (SSC; 17,528 bp), and a large single-copy region (LSC; 81,469 bp). The cp genome encodes 113 unique genes, including 79 protein-coding genes (PCGs), 30 tRNA genes, and four rRNA genes. The total GC content of the cp genome was 37.0%. Phylogenetic analysis of 24 cp genomes revealed that L. saccatum was closely related to L. souliei. This study could provide fundamental information for the phylogenomics and utilization of Lilium.

Published
2024
Full Text
View/download PDF

3. A new infrageneric classification of Gastrochilus (Orchidaceae: Epidendroideae) based on molecular and morphological data

Author

Jun-Yi Zhang, Yue-Hong Cheng, Min Liao, Yu Feng, Sen-Long Jin, Ting-Mei He, Hai He, and Bo Xu

Subjects
Gastrochilus, Phylogeny, Character evolution, Taxonomy, New species, Biology (General), QH301-705.5, Botany, QK1-989
Abstract

Gastrochilus is an orchid genus containing 73 species of mainly epiphytic on trees or rocks in mountain forests of tropical and subtropical Asia. Previous phylogenetic analyses and morphological assessments have failed to produce a well-resolved phylogeny at the infrageneric level. In the present study, a new infrageneric classification of Gastrochilus is proposed based on thoroughly morphological and phylogenetic analyses based on 52 species. Our phylogenetic analysis divided the genus into six sections including three new sections, G. sect. Pseudodistichi, G. sect. Brachycaules and G. sect. Acinacifolii. We also reinstate G. suavis to the specific rank. Furthermore, two new species, G. armeniacus Jun Y. Zhang, B. Xu & Yue H. Cheng and G. minjiangensis Jun Y. Zhang, B. Xu & Yue H. Cheng, are described and illustrated. A key to six sections of the genus is presented.

Published
2024
Full Text
View/download PDF

4. Thrixspermum taeniophyllum (Orchidaceae, Epidendroideae), a new species from southwest China, based on molecular and morphological evidence

Author

Jun-Yi Zhang, Yue-Hong Cheng, Min Liao, Gui-Ying Liu, Pan-Yan Yang, Bo Xu, and Hai He

Subjects
Botany, QK1-989
Abstract

Thrixspermum taeniophyllum is described as a new orchid species from Wenchuan County, Sichuan Province of southwest China. It is morphologically similar to T. japonicum, but it differs from the latter in having branched stems, slightly fleshy strap-shaped leaves, longer inflorescences with 3–6 flowers and a capitate gynandrium with a lip-shaped mouth opening. Its species status is also supported by molecular phylogenetic analyses, based on nuclear ribosome internal transcribed spacer (nrITS) and three chloroplast DNA fragments (matK, psbA-trnH and trnL-F), which showed distinct systematic boundaries from the most morphologically similar T. japonicum and their morphological relatives T. saruwatarii and T. pygmaeum.

Published
2023
Full Text
View/download PDF

5. Molecule characterization of chemosensory and metabolism-related genes in the proboscis of Athetis lepigone

Author

Cai-Hong Tian, Xiao-Guang Liu, Cun-Yi Xu, Jian-Rong Huang, Jun-Feng Fu, Gen-Song Wang, Jun-Yi Zhang, Guo-Ping Li, Xin-Ming Yin, and Hong-Qiang Feng

Subjects
Athetis lepigone, scanning electron microscopy, proboscis transcriptome, chemosensory genes, metabolism-related genes, quantitative real-time PCR, Physiology, QP1-981
Abstract

Introduction: The moth species Athetis lepigone (Möschler) (Lepidoptera: Noctuidae), which has recently been identified as a pest of summer maize (Zea mays L.) in China, has demonstrated a rapid proliferation with in the Huang-Huai-Hai Plain region since its initial discovery in Hebei Province in 2005. It has become a prevalent pest of corn crops, and its ability to adapt quickly to its surroundings is currently being investigated. One of the key characteristics of its siphoning mouthparts is not only the feeding apparatus itself but also the chemosensory organs that enable the detection of chemical signals from the surrounding environment. However, there is a lack of comprehensive research on the genes responsible for chemosensory and metabolic mechanisms in the proboscises of male and female A. lepigone adults.Methods: In this study, we utilized transcriptome analysis to identify a total of fifty chemosensory genes from six distinct families, including 19 odorant-binding proteins (OBPs), 22 chemosensory proteins (CSPs), one co-receptor (Orco), six odorant receptors (ORs), four ionotropic receptors (IRs), and two sensory neuron membrane proteins (SNMPs) in the proboscis. Notably, seven OBPs, two CSPs, and one OR were discovered for the first time. Additionally, fourteen genes related to metabolism, including cytochrome P450 (CYPs) and carboxylesterases (CXEs), were also identified. Furthermore, a qualitative analysis was conducted on the relative transcript levels of eight related genes. The expression of 21 annotated chemosensory and metabolic genes was compared between A. lepigone adults and larvae using qRT-PCR, revealing tissue specificity. The majority of genes exhibited predominant expression in the antennae and proboscis during the adult stage, while showing slight expression in the combination of sixth-instar larval head oral appendages (maxilla, labium, and antenna) and pheromone gland-ovipositors of female adults.Results/discussion: Our study points to a new pest control strategies that these newly discovered genes have the potential to serve as targets for enhancing future pest control, including mating disruption and the use of food attractants. And it would be advantageous to ascertain the distribution of chemosensory gene expression and gain insights into the functionalities of these genes, thereby establishing a novel theoretical framework for the advancement of eco-friendly pesticides and efficient pest management strategies in the future.

Published
2023
Full Text
View/download PDF

6. Gastrochilus heminii (Orchidaceae, Epidendroideae), a new species from Sichuan, China, based on molecular and morphological data

Author

Min Liao, Yue-Hong Cheng, Jun-Yi Zhang, Yu Feng, Gui-Ying Liu, Ping Ye, Sen-Long Jin, Hong-Qiang Lin, and Bo Xu

Subjects
Botany, QK1-989
Abstract

Gastrochilus heminii (Orchidaceae), a new orchid species from Sichuan Province, Southwest China, is described and illustrated. It morphologically resembles G. affinis and G. yei, but differs markedly from the former in having a thinner and slightly rolled downwards reniform epichile and the central thickened purple-red mat with irregular folds (vs. subtriangular epichile curves upwards, with 2 thick, brown to purplish-brown median ridges from base to apex), and can be clearly distinguished from the latter by having reniform epichile with lobed apex and subconical hypochile with bilobed apex that splits into two conical protrusions (vs. semi-rounded epichile not lobed and subconical hypochile not bilobed). The results of molecular phylogenetic analysis based on nuclear ribosome internal transcribed spacer (nrITS) and four chloroplast DNA fragments (matK, psbA-trnH, psbM-trnD, and trnL-F) of 36 Gastrochilus species showed that G. heminii was closely related to G. affinis and G. distichus.

Published
2022
Full Text
View/download PDF

7. Euonymus aquifolium (Celastraceae): Rediscovered in flowering with respect to its taxonomy, nomenclature, and rarity

Author

Jun Hu, Jun-Yi Zhang, Ding-Xiang Yu, Hong Jiang, Bo Xu, Qing Liu, and Hai He

Subjects
Botany, QK1-989
Abstract

A small population of Euonymus aquifolium (Celastraceae) with flowering plants was discovered more than 100 kilometers away from its type locality. The incomplete original description of this species is supplemented here with floral materials since it is known from only two gatherings of fruiting specimens. Its 5-merous flowers and two ovules per locule support its position in Euonymus, and this inference is further reinforced by phylogenetic analysis based on the nuclear internal transcribed spacer (ITS) of rDNA. The specific epithet has long been treated as “aquifolius” to agree with the generic gender of Euonymus. But after examination of the protologues of this and other related species described simultaneously by the same authors, as well as their handwritten annotations attached on the type specimens, we conclude that the epithet aquifolium was used as a noun and it should be retained unchanged. Despite this newly discovered population some 100 kilometers away from its type locality, this species is still assessed as Critical Endangered (CR) according to the IUCN Red List Categories and Criteria.

Published
2022
Full Text
View/download PDF

8. Comparative Chloroplast Genomics of Seven Endangered Cypripedium Species and Phylogenetic Relationships of Orchidaceae

Author

Jun-Yi Zhang, Min Liao, Yue-Hong Cheng, Yu Feng, Wen-Bing Ju, Heng-Ning Deng, Xiong Li, Andelka Plenković-Moraj, and Bo Xu

Subjects
Cypripedium, chloroplast genome, IR expansion, molecular markers, Orchidaceae, phylogenomics, Plant culture, SB1-1110
Abstract

The species in the genus Cypripedium (Orchidaceae) are considered endangered, mainly distributed in the temperate regions of the Northern Hemisphere, with high ornamental and economic value. Despite previous extensive studies based on both morphology and molecular data, species and sections relationships within Cypripedium remain controversial. Here, we employed two newly generated Cypripedium chloroplast genomes with five other published genomes to elucidate their genomic characteristics. The two genomes were 162,773–207,142 bp in length and contained 128–130 genes, including 82–84 protein-coding genes, 38 tRNA genes, and 8 rRNA genes. We identified 2,192 simple sequence repeats, 786 large repeat sequences, and 7,929 variable loci. The increase of repeat sequences (simple sequence repeats and large repeat sequences) causes a significant amplification in the chloroplast genome size of Cypripedium. The expansion of the IR region led to the pseudogenization or loss of genes in the SSC region. In addition, we identified 12 highly polymorphic loci (Pi > 0.09) suitable for inferring the phylogeny of Cypripedium species. Based on data sets of whole chloroplast genomes (IRa excluded) and protein-coding sequences, a well-supported phylogenetic tree was reconstructed, strongly supporting the five subfamilies of Orchidaceae and the genus Cypripedium as monophyletic taxa. Our findings also supported that C. palangshanense belonged to sect. Palangshanensia rather than sect. Retinervia. This study also enriched the genomic resources of Cypripedium, which may help to promote the conservation efforts of these endangered species.

Published
2022
Full Text
View/download PDF

9. Complete Chloroplast Genomes Provide Insights Into Evolution and Phylogeny of Campylotropis (Fabaceae)

Author

Yu Feng, Xin-Fen Gao, Jun-Yi Zhang, Li-Sha Jiang, Xiong Li, Heng-Ning Deng, Min Liao, and Bo Xu

Subjects
Campylotropis, legume, adaptive evolution, phylogenomics, comparative genomics, chloroplast genome, Plant culture, SB1-1110
Abstract

The genus Campylotropis Bunge (Desmodieae, Papilionoideae) comprises about 37 species distributed in temperate and tropical Asia. Despite the great potential in soil conservation, horticulture, and medicine usage, little is known about the evolutionary history and phylogenetic relationships of Campylotropis due to insufficient genetic resources. Here, we sequenced and assembled 21 complete chloroplast genomes of Campylotropis species. In combination with the previously published chloroplast genomes of C. macrocarpa and closely related species, we conducted comparative genomics and phylogenomic analysis on these data. Comparative analysis of the genome size, structure, expansion and contraction of inverted repeat (IR) boundaries, number of genes, GC content, and pattern of simple sequence repeats (SSRs) revealed high similarities among the Campylotropis chloroplast genomes. The activities of long sequence repeats contributed to the variation in genome size and gene content in Campylotropis chloroplast genomes. The Campylotropis chloroplast genomes showed moderate sequence variation, and 13 highly variable regions were identified for species identification and further phylogenetic studies. We also reported one more case of matK pseudogene in the legume family. The phylogenetic analysis confirmed the monophyly of Campylotropis and the sister relationship between Lespedeza and Kummerowia, the latter two genera were then sister to Campylotropis. The intrageneric relationships of Campylotropis based on genomic scale data were firstly reported in this study. The two positively selected genes (atpF and rps19) and eight fast-evolving genes identified in this study may help us to understand the adaptation of Campylotropis species. Overall, this study enhances our understanding of the chloroplast genome evolution and phylogenetic relationships of Campylotropis.

Published
2022
Full Text
View/download PDF

10. Comparative Chloroplast Genomics of Sophora Species: Evolution and Phylogenetic Relationships in the Early-Diverging Legume Subfamily Papilionoideae (Fabaceae)

Author

Min Liao, Xin-Fen Gao, Jun-Yi Zhang, Heng-Ning Deng, and Bo Xu

Subjects
gene loss, IR expansion, molecular markers, relocation, Sophora, plastome, Plant culture, SB1-1110
Abstract

The taxonomy and evolutionary history of Sophora L., a genus with high economic and medicinal value, remain uncertain due to the absence of genetic resource (especially in China) and low polymorphism of molecular markers. Our aim was to elucidate the molecular evolution and phylogenetic relationships in chloroplast genomes of Sophora species in the early-diverging legume subfamily Papilionoideae (Fabaceae). We reported nine Sophora chloroplast genome from China using Illumina sequencing. We performed a series of analyses with previously published genomes of Sophora species to investigate their genomic characteristics, identified simple sequence repeats, large repeat sequences, tandem repeats, and highly polymorphic loci. The genomes were 152,953–158,087 bp in length, and contained 111–113 unique genes, including 76–78 protein coding, 31 tRNA, and 4 rRNA. The expansion of inverted repeat boundary of Sophora resulted in rps12 entering into the LSC region and loss of trnT-CGU gene in some species. Also, we found an approximately 23 kb inversion between trnC-GCA and trnF-GAA within the genus. In addition, we identified seven highly polymorphic loci (pi (π) > 0.035) suitable for inferring the phylogeny of Sophora species. Among these, three regions also co-occurred with large repeat sequences and support use of repeats as a proxy for the identification of polymorphic loci. Based on whole chloroplast genome and protein-coding sequences data-set, a well-supported phylogenetic tree of Sophora and related taxa showed that this genus is monophyletic, but sect. Disamaea and sect. Sophora, are incongruent with traditional taxonomic classifications based on fruit morphology. Our finding provides significant genetic resources to support further investigation into the phylogenetic relationship and evolution of the genus Sophora.

Published
2021
Full Text
View/download PDF

11. Increased urinary adiponectin level is associated with contrast-induced nephropathy in patients undergoing elective percutaneous coronary intervention

Author

Jun-yi Zhang, Qiong Wang, Ru-tao Wang, Fei Li, He-xiang Cheng, Kun Lian, Yi Liu, and Ling Tao

Subjects
Percutaneous coronary intervention, Urinary adiponectin, Contrast-induced nephropathy, Diseases of the circulatory (Cardiovascular) system, RC666-701
Abstract

Abstract Background Contrast-induced nephropathy (CIN) is one of major and serious complications in patients undergoing percutaneous coronary intervention (PCI). It is unknown whether increased urinary adiponectin (UAPN), a sensitive marker for early renal function impairment, is associated with an increased risk of CIN. Therefore, we prospectively investigate the association of UAPN with CIN. Methods We prospectively enrolled 208 patients who were undergoing elective PCI. The baseline UAPN was assessed prior to PCI. The ROC analysis was used to evaluate the predictive value of UAPN for CIN. Multivariate logistic regression analysis was performed to analyze the independent risk factors for CIN. Results Of 208 patients, CIN occurred in 19 patients (9.13%), and 6 of them (2.88%) required dialysis. Patients with CIN had a higher UAPN level than those without CIN (17.15 ± 12.36 vs. 10.29 ± 3.04 ng/ml, P 124 μmol/L (OR, 4.210; 95% CI, 1.297–13.669; P

Published
2019
Full Text
View/download PDF

12. Trotterized adiabatic quantum simulation and its application to a simple all-optical system

Author

Yifan Sun, Jun-Yi Zhang, Mark S Byrd, and Lian-Ao Wu

Subjects
adiabatic quantum computing, linear optics, Trotterization, Science, Physics, QC1-999
Abstract

As first proposed for the adiabatic quantum information processing by Wu et al (2002 Phys. Rev. Lett. 89 057904), the Trotterization technique is a very useful tool for universal quantum computing, and in particular, the adiabatic quantum simulation of quantum systems. Given a boson Hamiltonian involving arbitrary bilinear interactions, we propose a static version of this technique to perform an optical simulation that would enable the identification of the ground state of the Hamiltonian. By this method, the dynamical process of the adiabatic evolution is mapped to a static linear optical array which is robust to the errors caused by dynamical fluctuations. We examine the cost of the physical implementation of the Trotterization, i.e. the number of discrete steps required for a given accuracy. Two conclusions are drawn. One is that the number of required steps grows much more slowly than the system size if the number of non-zero matrix elements of Hamiltonian is not too large. The second is that small fluctuations of the parameters of optical elements do not affect the first conclusion. This implies that the method is robust against the certain type of errors as we considered. Last but not least, we present an example of implementation of the simulation on a photonic chip as well as an optimized scheme. By such examples, we show a reduction of the costs compared to its classical counterpart and the potential for further improvement, which promotes a more general application.

Published
2020
Full Text
View/download PDF

14. High⁃density lesions in cranial CT with vision loss of both sides and paroxysmal convulsion

Author

Li⁃bo LI and Jun⁃yi ZHANG

Subjects
Intracranial embolism and thrombosis, Heart neoplasms, Myxoma, Case report, Neurology. Diseases of the nervous system, RC346-429
Abstract

A 49-year-old man presented with weakness of right side and vision loss of both sides in local hospital. Initial CT of the head showed multiple high-density lesions in occipital -parietal lobe and with diagnosis of cerebral cysticercosis. Two months later, repeated cranial CT showed no significant change of multiple high-density lesions in occipital -parietal lobe, with symptom of vision get worse; and so of three months later and the third cranial CT, until he had seizures. During episodes of convulsion, EEG showed occipital lobe epilepsy. And brain MR revealed several hemorrhage-like lesions in occipital -parietal lobe. After admission, Echocardiaogram showed a mass in left atrial. The mass proved to be a myxoma on surgical resection.DOI：10.3969/j.issn.1672⁃6731.2012.04.024

Published
2012

15. Performance and enhanced oil recovery efficiency of an acid-resistant polymer microspheres of anti-CO2 channeling in low-permeability reservoirs.

Author

Hai-Zhuang Jiang, Hong-Bin Yang, Ruo-Sheng Pan, Zhen-Yu Ren, Wan-Li Kang, Jun-Yi Zhang, Shi-Long Pan, and Sarsenbekuly, Bauyrzhan

Subjects
ENHANCED oil recovery, RHEOLOGY, CHANNEL flow, ESSENTIAL oils, MICROSPHERES
Abstract

CO2 flooding is a vital development method for enhanced oil recovery in low-permeability reservoirs. However, micro-fractures are developed in low-permeability reservoirs, which are essential oil flow channels but can also cause severe CO2 gas channeling problems. Therefore, anti-gas channeling is a necessary measure to improve the effect of CO2 flooding. The kind of anti-gas channeling refers to the plugging of fractures in the deep formation to prevent CO2 gas channeling, which is different from the wellbore leakage. Polymer microspheres have the characteristics of controllable deep plugging, which can achieve the profile control of low-permeability fractured reservoirs. In acidic environments with supercritical CO2, traditional polymer microspheres have poor expandability and plugging properties. Based on previous work, a systematic evaluation of the expansion performance, dispersion rheological properties, stability, deep migration, anti-CO2 channeling and enhanced oil recovery ability of a novel acid-resistant polymer microsphere (DCNPM-A) was carried out under CQ oilfield conditions (salinity of 85,000 mg/L, 80 °C, pH = 3). The results show that the DCNPM-A microsphere had a better expansion performance than the traditional microsphere, with a swelling rate of 13.5. The microsphere dispersion with a concentration of 0.1%-0.5% had the advantages of low viscosity, high dispersion and good injectability in the low permeability fractured core. In the acidic environment of supercritical CO2, DCNPM-A microspheres showed excellent stability and could maintain strength for over 60 d with less loss. In core experiments, DCNPM-A microspheres exhibited delayed swelling characteristics and could effectively plug deep formations. With a plugging rate of 95%, the subsequent enhanced oil recovery of CO2 flooding could reach 21.03%. The experimental results can provide a theoretical basis for anti-CO2 channeling and enhanced oil recovery in low-permeability fractured reservoirs. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

16. Molecule characterization of chemosensory and metabolism-related genes in the proboscis of Athetis lepigone.

Author

Cai-Hong Tian, Xiao-Guang Liu, Cun-Yi Xu, Jian-Rong Huang, Jun-Feng Fu, Gen-Song Wang, Jun-Yi Zhang, Guo-Ping Li, Xin-Ming Yin, and Hong-Qiang Feng

Subjects
SPODOPTERA littoralis, CHEMOSENSORY proteins, OLFACTORY receptors, ODORANT-binding proteins, GENE expression, GENES, Y chromosome
Abstract

Introduction: The moth species Athetis lepigone (Moschler) (Lepidoptera: Noctuidae), which has recently been identified as a pest of summer maize (Zea mays L.) in China, has demonstrated a rapid proliferation with in the Huang-Huai-Hai Plain region since its initial discovery in Hebei Province in 2005. It has become a prevalent pest of corn crops, and its ability to adapt quickly to its surroundings is currently being investigated. One of the key characteristics of its siphoning mouthparts is not only the feeding apparatus itself but also the chemosensory organs that enable the detection of chemical signals from the surrounding environment. However, there is a lack of comprehensive research on the genes responsible for chemosensory and metabolic mechanisms in the proboscises of male and female A. lepigone adults. Methods: In this study, we utilized transcriptome analysis to identify a total of fifty chemosensory genes from six distinct families, including 19 odorant-binding proteins (OBPs), 22 chemosensory proteins (CSPs), one co-receptor (Orco), six odorant receptors (ORs), four ionotropic receptors (IRs), and two sensory neuron membrane proteins (SNMPs) in the proboscis. Notably, seven OBPs, two CSPs, and one OR were discovered for the first time. Additionally, fourteen genes related to metabolism, including cytochrome P450 (CYPs) and carboxylesterases (CXEs), were also identified. Furthermore, a qualitative analysis was conducted on the relative transcript levels of eight related genes. The expression of 21 annotated chemosensory and metabolic genes was compared between A. lepigone adults and larvae using qRT-PCR, revealing tissue specificity. The majority of genes exhibited predominant expression in the antennae and proboscis during the adult stage, while showing slight expression in the combination of sixth-instar larval head oral appendages (maxilla, labium, and antenna) and pheromone gland-ovipositors of female adults. Results/discussion: Our study points to a new pest control strategies that these newly discovered genes have the potential to serve as targets for enhancing future pest control, including mating disruption and the use of food attractants. And it would be advantageous to ascertain the distribution of chemosensory gene expression and gain insights into the functionalities of these genes, thereby establishing a novel theoretical framework for the advancement of eco-friendly pesticides and efficient pest management strategies in the future. [ABSTRACT FROM AUTHOR]

Published
2024
Full Text
View/download PDF

18. Pollen morphology of the genus Sophora (Fabaceae) and its taxonomic implications

Author

Min Liao, Fazal Ullah, Heng‐Ning Deng, Jun‐Yi Zhang, Bo Xu, and Xin‐Fen Gao

Subjects
Medical Laboratory Technology, Histology, Microscopy, Electron, Scanning, Pollen, Fabaceae, Anatomy, Sophora, Instrumentation
Abstract

The genus Sophora (Fabaceae) is one of the taxonomically challenging genera with high economic and medical values. In this study, the pollen morphology of 43 samples of 27 species, 4 subspecies, and 4 varieties of the genus Sophora and 3 closely related genera was examined using scanning electron microscopy to evaluate the pollen diversity of the genus and its taxonomic significance. Pollen grains of the studied species were tricolporate (rarely six-aperture), and pollen shape varied from suboblate, spheroidal, subprolate to prolate. Echinate external ornamentation was reported for the first time in some species of the genus. Aperture membrane ornamentation and outline in a polar/equatorial view were described for the first time in the genus. Principal component analysis was used to understand the relationship and discrimination between the species and the genera, with six components accounting for 79.92% of the total variance. Taxonomic keys based on pollen morphology were also constructed to easily identify the taxa of the genus through palynological characteristics. Results showed that pollen morphology alone is not sufficient to elucidate or reconstruct taxonomic relationships within the genus Sophora, but palynological assessments can provide some useful information for identifying taxonomically problematic taxa.

Published
2021

19. Chromosome‐level de novo genome assembly and whole‐genome resequencing of the threatened species Acanthochlamys bracteata (Velloziaceae) provide insights into alpine plant divergence in a biodiversity hotspot

Author

Yun-Dong Gao, Bo Xu, Li-sha Jiang, Lv Yun-yun, Min Liao, Xin-Fen Gao, Xiong Li, Heng-Ning Deng, Chao-chao Yan, Jun-yi Zhang, and Wen-Bin Ju

Subjects
Comparative genomics, Genetic diversity, education.field_of_study, Genome, Demographic history, Endangered Species, Population, Biodiversity, Biology, Chromosomes, Gene flow, Population genomics, Evolutionary biology, Threatened species, Genetic structure, Genetics, Animals, Humans, education, Phylogeny, Ecology, Evolution, Behavior and Systematics, Biotechnology
Abstract

The Hengduan Mountains region is an important hotspot of alpine plant diversity and endemism. Acanthochlamys bracteata is a threatened monotypic genus species endemic to Hengduan Mountains. In this study, we present a high-quality, chromosome-level reference genome for A. bracteata, constructed using long reads, short reads, and Hi-C technology. We characterized its genetic diversity, population structure, demographic history, and gene flow by resequencing individuals collected across its distribution. Comparative genomics analyses based on sequence information from single-copy orthologous genes revealed that A. bracteata and Dioscorea rotundata diverged approximately 104.5 million years ago (mya). Whole-genome resequencing based on population genetic analysis revealed that the division of the 14 populations into ten distinct clusters reflected geographic divergence, and three high levels of gene flow occurred sequentially between isolated populations of the Hengduan Mountains, a finding which is consistent with the turnover between ice ages and interglacial periods. Our findings indicated that Quaternary climatic changes played an important role in shaping the genetic structure and demographic trajectories of A. bracteata, and provide critical insights into the genetic status and evolutionary history of this poorly understood species, and possibly other alpine plants with a similar distribution. This study demonstrates the usefulness of population genomics for evaluating the effects of past climatic changes and identifying conservation units (CUs) for the conversation and management of threatened species. Our high-quality genome represents a valuable resource for revealing the underlying molecular mechanisms of adaptive evolution in the future and sheds insight into further comparative genomic analysis with other Velloziaceae species.

Published
2021

21. Wall-cooling effects on pressure fluctuations in compressible turbulent boundary layers from subsonic to hypersonic regimes

Author

Peng-Jun-Yi Zhang, Zhen-Hua Wan, Nan-Sheng Liu, De-Jun Sun, and Xi-Yun Lu

Subjects
Mechanics of Materials, Mechanical Engineering, Applied Mathematics, Condensed Matter Physics
Abstract

Pressure fluctuations play an essential role in the transport of turbulent kinetic energy and vibrational loading. This study focuses on examining the effect of wall cooling on pressure fluctuations in compressible turbulent boundary layers by high-fidelity direct numerical simulations. Pressure fluctuations result from the vorticity mode and the acoustic mode that are both closely dependent on compressibility. To demonstrate the effects of wall cooling at various compressibility intensities, three free-stream Mach numbers are investigated, i.e. $M_\infty =0.5$ , 2.0 and 8.0, with real gas effects being absent for $M_\infty =8.0$ due to a low enthalpy inflow. Overall, opposite effects of wall cooling on pressure fluctuations are found between the subsonic/supersonic cases and the hypersonic case. Specifically, the pressure fluctuations normalized by wall shear stress $p^\prime _{rms}/\tau _w$ are suppressed in the subsonic and supersonic cases, while enhanced in the hypersonic case near the wall. Importantly, travelling-wave-like alternating positive and negative structures (APNS), which greatly contribute to pressure fluctuations, are identified within the viscous sublayer and buffer layer in the hypersonic cases. Furthermore, generating mechanisms of pressure fluctuations are explored by extending the decomposition based on the fluctuating pressure equation to compressible turbulent boundary layers. Pressure fluctuations are decomposed into five components, in which rapid pressure, slow pressure and compressible pressure are dominant. The suppression of pressure fluctuations in the subsonic and supersonic cases is due to both rapid pressure and slow pressure being suppressed by wall cooling. In contrast, wall cooling strengthens compressible pressure for all Mach numbers, especially in the hypersonic case, resulting in increased wall pressure fluctuations. Compressible pressure plays a leading role in the hypersonic case, mainly due to the APNS. Essentially, the main effects of wall cooling can be interpreted by the suppression of the vorticity mode and the enhancement of the acoustic mode.

Published
2022

27. Effects of trailing-edge serration shape on airfoil noise reduction with zero incidence angle

Author

Ya-Sen Hu, Peng-Jun-Yi Zhang, Zhen-Hua Wan, Nan-Sheng Liu, De-Jun Sun, and Xi-Yun Lu

Subjects
Fluid Flow and Transfer Processes, Mechanics of Materials, Mechanical Engineering, Computational Mechanics, Condensed Matter Physics
Abstract

When controlling the trailing-edge (TE) interference noise of airfoil, the design of the TE serration shape is still an open issue. To this end, the flow and noise generation for different TE serration shapes are explored by the wall-resolved implicit large-eddy simulation and acoustic analogy. The feather-like serrations are found to achieve the most prominent noise reduction among the four types of curved serrations, especially in the low-frequency range. With the aid of acoustic analogy, the coherence analysis of far-field noise produced by the dipole sources on the airfoil surface is performed. The results show that destructive interference is still the critical mechanism responsible for noise reduction. Considering only the dipole sources, we find that the feather-like serrated TE shape can obtain the best noise reduction performance among all the serrated cases. Furthermore, since flow structures are reorganized near the TE serrations, we investigated the flow noise sources quantitatively in the near field. In these cases, the noise source due to flow structures is suppressed to a greater extent in the feather-like serrated case near the TE serration roots. Consequently, the above findings indicate that the feather-like serration favors suppressing dipole and flow noise sources in the near field, which makes it an efficient configuration for reducing airfoil noise.

Published
2022

28. Calculation of spin-polarized positronium-helium (2 S3) and electron-helium (2 S3) scattering

Author

Yi Zhang, Jun-Yi Zhang, Ying Qian, Kalman Varga, and Meng-Shan Wu

Subjects
Physics, Scattering, chemistry.chemical_element, Scattering length, Positronium, symbols.namesake, chemistry, Physics::Atomic and Molecular Clusters, symbols, Physics::Atomic Physics, van der Waals force, Atomic physics, Ground state, Isotopes of helium, Helium, Energy (signal processing)
Abstract

Low-energy properties of spin-polarized electron-helium $(2\phantom{\rule{0.16em}{0ex}}^{3}S)$ and spin-polarized positronium-helium $(2\phantom{\rule{0.16em}{0ex}}^{3}S)$ scattering are calculated using the modified confined variational method. To take the van der Waals interaction into consideration, the van der Waals coefficient between positronium and helium $(2\phantom{\rule{0.16em}{0ex}}^{3}S)$ is calculated using the explicitly correlated Gaussian basis. Compared with the ground state noble gases, the larger scattering length and zero pickoff annihilation rate indicates that $\mathrm{He}(2\phantom{\rule{0.16em}{0ex}}^{3}S)$ may be a more suitable cooling gas. In the energy range we considered, no similarity is found for the $S$-wave cross sections between these two scatterings. A Ramsauer-Townsend minimum is observed in spin-polarized electron-helium$(2\phantom{\rule{0.16em}{0ex}}^{3}S)$ scattering due to the large polarization of metastable helium. This may open a new way to find and study the Ramsauer-Townsend effect.

Published
2021

29. Magic wavelengths for the helium 23S1→21P1 forbidden transition

Author

Ting-Yun Shi, Jun-Yi Zhang, Li-Yan Tang, and Yong-Hui Zhang

Subjects
Physics, chemistry.chemical_element, Configuration interaction, 01 natural sciences, 010305 fluids & plasmas, symbols.namesake, Wavelength, chemistry, 0103 physical sciences, symbols, MAGIC (telescope), Atomic physics, Perturbation theory, 010306 general physics, Hamiltonian (quantum mechanics), Isotopes of helium, Helium
Abstract

A series of magic wavelengths for the forbidden transition of $2{\phantom{\rule{0.16em}{0ex}}}^{3}{S}_{1}\ensuremath{\rightarrow}2{\phantom{\rule{0.16em}{0ex}}}^{1}{P}_{1}$ in helium are determined by performing large-scale full relativistic configuration interaction calculations based on Dirac-Coulomb-Breit Hamiltonian with the mass shift operator included. QED corrections to magic wavelengths are taken into account by using the perturbation theory in nonrelativistic configuration interaction calculations. The 1335.55(2)-nm magic wavelength for the $2{\phantom{\rule{0.16em}{0ex}}}^{3}{S}_{1}(M=\ifmmode\pm\else\textpm\fi{}1)\ensuremath{\rightarrow}2{\phantom{\rule{0.16em}{0ex}}}^{1}{P}_{1}(M=0)$ transition is found to be sensitive to the finite nuclear mass, relativistic, and QED effects, and its measurement might provide a test of atomic structure theory.

Published
2021

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

Author

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

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

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

Published
2021

31. Confined variational calculation of positronium-hydrogen scattering below the positronium excitation threshold

Author

Ying Qian, Zhiyuan Yan, Meng-Shan Wu, Udo Schwingenschlögl, Kalman Varga, and Jun-Yi Zhang

Subjects
Physics, Angular momentum, Scattering, Phase (waves), 01 natural sciences, 010305 fluids & plasmas, Positronium, Momentum, Variational method, 0103 physical sciences, Atomic physics, 010306 general physics, Spin (physics), Excitation
Abstract

The confined variational method is used to study $S$-, $P$-, and $D$-wave positronium-hydrogen scattering with the scattering energy between 0.068 and 3.333 eV. Accurate phase shifts and $S$-wave scattering lengths are calculated and compared with other theoretical methods. Existing discrepancies for the $D$-wave phase shifts are resolved. According to collision momentum, total orbital angular momentum, and spin configuration, the distortion effects of positronium are quantitatively studied. Finally, the finite nuclear mass effects are investigated.

Published
2021

32. ANALYSIS OF THE PERSPECTIVES OF INTEGRATION PLANS IN THE EAST ASIAN REGION IN ACCORDANCE WITH THE COHESION INDEX

Author

Jun-Yi Zhang

Subjects
Index (economics), Geography, Cohesion (geology), Economic geography, East asian region
Abstract

The voting results of the UN General Assembly have already become standard data for assessing the positions of UN member states in the field of foreign policy. Most works use dyadic indicators of similarity of votes between countries. The similarity of voting result may reflect the coordination level of actions of selected states. Analyzing the results of voting at the UN General Assembly, we found that in East Asia, the complexity level of regional integration is associated with the index of cohesion (IС) among the participating countries.

Published
2020

35. Doubly excited states of the positronium molecule

Author

Yi Zhang, Kalman Varga, Jun-Yi Zhang, Huili Han, Ying Qian, and Meng-Shan Wu

Subjects
Physics, Annihilation, Rotation method, Excited state, 0103 physical sciences, Resonance, Molecule, Atomic physics, 010306 general physics, 01 natural sciences, 010305 fluids & plasmas, Positronium
Abstract

The projection method with explicitly correlated Gaussians is used to demonstrate the existence of two doubly excited states of the positronium molecule (${\mathrm{Ps}}_{2}$). One is below the $\mathrm{Ps}(n=2)\phantom{\rule{4pt}{0ex}}+\phantom{\rule{4pt}{0ex}}\mathrm{Ps}(n=2)$ threshold, with ${A}_{1}$ symmetry, and the other is below the $\mathrm{Ps}(n=2)+\mathrm{Ps}(n=3)$ threshold, with $E$ symmetry. These states exist as resonances in the Ps-Ps continuum. Moreover, the resonance positions and resonance widths of the two states are calculated using the complex rotation method with basis sets obtained via the orthogonalizing pseudoprojector method. The resonance positions obtained using the complex rotation method agree with the results of the orthogonalizing pseudoprojector method. We also investigate the various structural properties of these states as well as the decay probabilities of $2\ensuremath{\gamma}$ emission due to electron-positron annihilation.

Published
2020

36. Determination of Strong-Phase Parameters in D→KS,L0π+π−

Author

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

Subjects
Physics, Particle physics, Annihilation, Phase (waves), General Physics and Astronomy, 01 natural sciences, law.invention, law, 0103 physical sciences, CP violation, Charm (quantum number), Sensitivity (control systems), 010306 general physics, Collider, Mixing (physics), Energy (signal processing)
Abstract

We report the most precise measurements to date of the strong-phase parameters between D^{0} and D[over ¯]^{0} decays to K_{S,L}^{0}π^{+}π^{-} using a sample of 2.93 fb^{-1} of e^{+}e^{-} annihilation data collected at a center-of-mass energy of 3.773 GeV with the BESIII detector at the BEPCII collider. Our results provide the key inputs for a binned model-independent determination of the Cabibbo-Kobayashi-Maskawa angle γ/ϕ_{3} with B decays. Using our results, the decay model sensitivity to the γ/ϕ_{3} measurement is expected to be between 0.7° and 1.2°, approximately a factor of three smaller than that achievable with previous measurements, based on the studies of the simulated data. The improved precision of this work ensures that measurements of γ/ϕ_{3} will not be limited by knowledge of strong phases for the next decade. Furthermore, our results provide critical input for other flavor-physics investigations, including charm mixing, other measurements of CP violation, and the measurement of strong-phase parameters for other D-decay modes.

Published
2020

37. Determination of the Pseudoscalar Decay Constant fDs+ via Ds+→μ+νμ

Author

M. Y. Dong, H. Liang, H. B. Liu, D. Y. Liu, J. B. Jiao, Y. K. Heng, R. Farinelli, M. Qi, J. H. Zou, H. L. Ma, H. J. Yang, D. M. Li, S. S. Sun, X. S. Qin, M. Fritsch, S. Ahmed, M. Pelizaeus, M. Richter, Z. Ning, L. J. Wu, Y. J. Mo, R. E. Mitchell, H. J. Lu, J. G. Lu, Kai Liu, Michael Papenbrock, F. Yan, J. F. Hu, X. B. Ji, M. Tiemens, Ke Liu, S. B. Liu, S. F. Zhang, Zhiyong Zhang, J. C. Li, J. Zhuang, F. E. Maas, T. Hu, L. Zhang, Y. Nefedov, F. De Mori, Y. Zhang, T. Holtmann, P. Patteri, J. Y. Liu, Q. A. Malik, G. Mezzadri, S. Qian, Q. An, Jialun Ping, K. Zhang, Z. J. Xiao, M. X. Luo, D. V. Dedovich, F. Li, F. C. Ma, Fang Liu, X. K. Zhou, I. Denysenko, W. C. Yan, O. Bakina, M. Bertani, Z. Haddadi, L. Yang, Q. Gao, Y. N. Gao, Ke Li, X. N. Ma, L. M. Gu, L. P. Zhou, Y. M. Ma, Z. P. Mao, X. Y. Zhang, Meng Wang, X. Y. Zhou, Z. T. Sun, M. Lara, J. B. Liu, Y. J. Sun, Yifan Yang, J. Z. Fan, Zhiqing Liu, T. Johansson, J. F. Chang, G. S. Huang, X. Zhou, Y. Fu, I. Tapan, Y. H. Yan, I. B. Nikolaev, J. H. Yin, B. Y. Zhang, Ke Wang, X D Shi, Xiao-Rui Lyu, Y. J. Mao, Y. F. Wang, O. B. Kolcu, X. Cai, L. Lavezzi, X. Q. Hao, J. W. Zhao, V. Prasad, Yunlong Zhang, H. L. Liu, Y. X. Yang, D. Bettoni, H. X. Yang, I. Garzia, Y. P. Lu, Cui Li, P. X. Shen, Z. Wu, J. F. Qiu, Q. P. Ji, Y. C. Zhu, L. Yan, P. Wang, M. Kuessner, J. Fang, Tao Li, A. Calcaterra, Z. G. Zhao, S. Fegan, L. Z. Liao, H. H. Zhang, Z. J. Sun, Y. G. Gao, B. Garillon, Huihui Liu, Y. T. Tan, W. Gradl, M. Ripka, Q. Zhao, Y. Ban, P. Weidenkaff, F. H. Heinsius, Z. Gao, S. P. Wen, X. R. Zhou, Jun-Yi Zhang, Y. P. Guo, J. G. Messchendorp, Zhiqing Zhang, M. Shao, Y. T. Gu, L. Fava, Ch. Rosner, J. P. Dai, R. Poling, G. S. Varner, Liqing Xu, X. Y. Shen, Y. Z. Sun, Bibo Ke, A. Zallo, B. Wang, W. B. Yan, M. N. Achasov, D. Y. Wang, J. Libby, C. X. Lin, R. Kliemt, H. B. Li, A. G. Denig, C. L. Luo, X. Xia, M. Kuemmel, Matthew Glenn Kurth, Qiunan Xu, W. Shan, Cheng Li, S. Han, Z. P. Zhang, Xiaozhong Huang, Gang Zhao, Yaquan Fang, S. Zhu, X. Liu, A. Mangoni, A. Guskov, H. R. Qi, Q. Zhou, J. J. Xu, J. Min, X. F. Wang, A. Sarantsev, A. Pitka, A. Q. Guo, C. W. Wang, G. Rong, S. Pacetti, L. H. Wu, Y. Ding, M. Kavatsyuk, Q. M. Ma, C. C. Zhang, D. H. Wei, P. R. Li, J. S. Lange, Serkant Ali Cetin, P. L. Chen, D. W. Bennett, G. A. Chelkov, B. Zhong, L. B. Guo, Zujian Wang, Y. Bai, T. Held, Yang Zhang, Ling Zhao, B. J. Liu, A. Mustafa, J. L. Zhang, J. S. Huang, B. Kopf, M. H. Gu, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, K. L. He, Tao Zhang, Y. H. Xie, J. Pellegrino, W. P. Wang, T. J. Min, M. Kornicer, Andrzej Kupsc, C. X. Liu, Z. H. Qin, H. Y. Sheng, Y. Yuan, Y. S. Zhu, K. J. Zhu, W. Kühn, X. L. Ji, M. Maggiora, W. M. Song, M. Z. Wang, Jimin Zhao, K. Schoenning, Q. Y. Li, G. Cibinetto, Yu Zhang, B. S. Zou, Z. Liu, M. L. Chen, W. G. Li, P. L. Li, Z. Y. You, Z. A. Zhu, Niklaus Berger, C. X. Yu, Y. K. Sun, Xu Shan, Yi Jin, Xinglong Li, S. Spataro, X. H. Mo, L. S. Wang, M. Destefanis, Q. Liu, X. Y. Jiang, M. H. Ye, Lei Zhao, Z. L. Hou, X. P. Xu, Lei Li, B. X. Zhang, Bingxuan Liu, B. Zheng, T. Weber, M. M. Ma, L. L. Ma, L. Gong, T. Khan, R. G. Ping, J. W. Li, P. L. Wang, G. F. Xu, X. Tang, L. L. Wang, H. Cai, A. Amoroso, M. Alekseev, P. F. Duan, C. P. Shen, Dan Wang, G. F. Cao, Yao Zhang, Y. G. Xie, G. Li, Y. Hu, L. Xia, Muhammad Irshad, A. Yuncu, M. Rolo, A. Dbeyssi, C. Z. Yuan, Y. J. Xiao, S. X. Du, Magnus Wolke, Gianfranco Morello, M. Albrecht, Y. F. Liang, Z. L. Dou, A. Gilman, J. F. Sun, Y. Pan, D. P. Jin, A. Julin, X. Y. Song, F. Cossio, W. D. Li, F. Feldbauer, C. D. Fu, L. Y. Dong, J. Chai, B. T. Tsednee, Z. X. Meng, X. A. Xiong, N. Qin, G. X. Sun, J. V. Bennett, Shan Jin, K. Goetzen, F. A. Harris, W. L. Chang, Z. L. Huang, Feng Liu, S. Marcello, Y. Zeng, W. J. Zheng, Fenfen An, C. Q. Feng, F. Nerling, A. A. Zafar, H. Leithoff, Z. Jiao, Fu-Hu Liu, D. H. Zhang, Z. Y. Deng, M. Ablikim, C. Sowa, Y. B. Zhao, S. Lusso, J. Dong, B. L. Wang, Y. Q. Wang, S. Nisar, C. J. Tang, Xingguo Li, Y. B. Chen, K. H. Rashid, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, D. Xiao, Y. T. Liang, Krisztian Peters, S. L. Yang, G. R. Liao, S. J. Chen, T. C. Zhao, Jinxing Zheng, C. F. Redmer, J. D. Lu, C. Schnier, X. T. Huang, Huanhuan Liu, G. Felici, B. X. Yu, Z. G. Wang, Zhi Zeng, H. Y. Zhang, Haiwen Liu, G. F. Chen, J. Y. Zhang, H. S. Chen, H. L. Dai, Igor Boyko, H. J. Li, L. Koch, A. Khoukaz, M. G. Zhao, Y. H. Yang, X. X. Ma, J. Zhu, Q. L. Xiu, S. J. Zhao, Q. J. Xu, J. C. Chen, Xuanhong Lou, Zongyuan Wang, S. Leiber, Nasser Kalantar-Nayestanaki, C. Morales Morales, Haiping Peng, Q. Ouyang, S. S. Fang, Y. B. Liu, X. L. Luo, K. Begzsuren, Y. H. Zheng, F. Bianchi, Cong-Feng Qiao, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, Z. Y. Wang, T. Hussain, X. Y. Ma, W. X. Gong, X. H. Sun, J. Q. Zhang, S. L. Niu, F. Y. Li, X. Q. Li, Y. F. Long, M. Greco, R. Baldini Ferroli, K. Y. Liu, R. P. Guo, Z. B. Li, W. Ikegami Andersson, P. Kiese, S. L. Olsen, R. A. Briere, X. S. Jiang, O. Cakir, T. Y. Qi, Y. X. Xia, S. H. Zhu, G. Y. Tang, Jie Zhao, D. X. Lin, Alexey Zhemchugov, H. M. Hu, J. W. Zhang, I. Uman, S. Nakhoul, P. Larin, X. L. Gao, C. Dong, S. Sosio, and Joachim Pettersson

Subjects
Pseudoscalar, Physics, Particle physics, Exponential decay
Published
2020

38. Study of the D0 → K− μ+ νμ Dynamics and Test of Lepton Flavor Universality with D0→K−l+νl Decays

Author

Q. Liu, X. L. Gao, M. Bertani, C. Dong, S. Sosio, Z. Haddadi, L. L. Ma, Joachim Pettersson, L. Yang, L. Gong, H. B. Li, M. H. Ye, A. G. Denig, C. L. Luo, A. Amoroso, Q. Zhou, Y. T. Tan, C. C. Zhang, W. Gradl, B. Zhong, M. Ripka, A. Dbeyssi, Y. H. Xie, L. D. Liu, D. Y. Wang, Angelo Rivetti, J. Pellegrino, H. Muramatsu, A. N. Zhu, Ulrich Wiedner, L. Y. Dong, Bingxuan Liu, Y. H. Zheng, Cong-Feng Qiao, S. Jin, A. Julin, M. Alekseev, W. S. Cheng, Yao Zhang, Tao Zhang, G. Li, M. Kornicer, T. Ma, N. Yu. Muchnoi, X. S. Kang, A. Gilman, M. Maggiora, Kai Liu, W. M. Song, W. J. Zheng, Xu Shan, Y. H. Zhang, X. L. Ji, C. D. Fu, C. Q. Feng, X. R. Chen, G. F. Xu, S. B. Liu, L. Zhang, Y. Nefedov, F. Nerling, Lei Zhao, Z. Y. Deng, Z. Y. Wang, Z. L. Hou, Z. G. Wang, H. Y. Zhang, Xingguo Li, F. Li, F. C. Ma, Fang Liu, Y. G. Xie, X. Y. Song, R. Kliemt, Y. Hu, Haiwen Liu, Y. X. Yang, Kang Li, A. Mangoni, L. J. Wu, A. Guskov, J. C. Li, Cui Li, S. X. Du, K. Goetzen, Jie Yu, Y. J. Mo, Z. L. Dou, J. F. Qiu, F. De Mori, J. Zhuang, M. X. Luo, L. Fava, G. S. Huang, K. J. Zhu, Meng Wang, D. V. Dedovich, X. Y. Zhou, Xu Zhou, T. Khan, Xiao-Rui Lyu, C. Z. Yuan, Q. Zhao, G. F. Chen, Y. Z. Sun, Q. P. Ji, Ke Li, G. Cibinetto, I. Uman, Liqing Xu, X. Y. Shen, Y. G. Gao, X. F. Wang, G. S. Varner, J. Y. Zhang, L. Koch, A. Khoukaz, Yang Zhang, F. Feldbauer, C. X. Lin, J. Z. Bai, Z. L. Huang, Y. Ding, Q. M. Ma, A. Mustafa, B. J. Liu, Gang Zhao, Feng Liu, P. Larin, M. Ablikim, X D Shi, A. Calcaterra, Z. G. Zhao, S. Fegan, W. Kühn, Y. J. Mao, L. Z. Liao, T. Holtmann, L. Yan, Y. Yuan, Y. S. Zhu, P. Wang, M. Kuessner, Z. Y. You, J. Y. Liu, H. H. Zhang, Yu Zhang, Z. J. Sun, Xinglong Li, H. X. Yang, I. Garzia, Z. A. Zhu, T. Weber, X. B. Ji, M. Tiemens, C. P. Shen, J. L. Zhang, M. H. Gu, R. Kiuchi, X. N. Ma, H. Y. Sheng, T. Y. Qi, Michael Papenbrock, Q. Gao, Y. N. Gao, F. Yan, B. Wang, P. L. Wang, G. A. Chelkov, P. Patteri, C. X. Yu, Y. X. Xia, S. H. Zhu, J. J. Xu, Z. Q. Yang, M. Kavatsyuk, P. Kiese, B. Garillon, Huihui Liu, Haiping Peng, Muhammad Irshad, J. S. Huang, C. X. Liu, Bibo Ke, Z. J. Xiao, S. L. Olsen, B. Zheng, R. G. Ping, W. B. Yan, J. G. Messchendorp, R. A. Briere, M. N. Achasov, H. J. Lu, Ke Wang, X. K. Chu, J. G. Lu, J. P. Dai, G. Y. Tang, S. Pacetti, B. X. Zhang, F. A. Harris, F. E. Maas, Y. K. Heng, X. S. Jiang, Jie Zhao, D. X. Lin, T. Hu, Qiunan Xu, P. F. Duan, Alexey Zhemchugov, H. M. Hu, H. Leithoff, O. Bakina, A. Q. Guo, Z. Y. Peng, G. Rong, Fenfen An, B. L. Wang, S. J. Zhao, J. W. Zhang, P. X. Shen, T. C. Zhao, X. K. Zhou, Jinxing Zheng, I. Denysenko, O. Cakir, J. F. Hu, Z. Wu, C. F. Redmer, Q. J. Xu, W. C. Yan, Zhiyong Zhang, R. Farinelli, C. Schnier, H. L. Ma, W. P. Wang, J. C. Chen, Xuanhong Lou, Zhiqing Zhang, I. B. Nikolaev, B. X. Yu, J. H. Yin, D. Y. Liu, J. B. Jiao, Z. T. Sun, D. M. Li, Z. H. Qin, M. Shao, Y. T. Gu, Zhi Zeng, Nasser Kalantar-Nayestanaki, B. Y. Zhang, X. T. Huang, C. Morales Morales, Jin Li, Y. Ban, P. Weidenkaff, F. H. Heinsius, M. Y. Dong, V. Prasad, S. Han, M. Pelizaeus, W. G. Li, E. Fioravanti, Y. K. Sun, Xiaoyu Zhou, S. P. Wen, X. R. Zhou, H. S. Chen, H. L. Dai, Igor Boyko, H. B. Liu, J. H. Zou, Cheng Li, S. Spataro, X. P. Xu, L. H. Wu, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, M. G. Zhao, Y. H. Yang, R. P. Guo, J. Zhu, Yi Jin, Lei Li, J. W. Li, L. Xia, S. S. Sun, X. S. Qin, J. Q. Zhang, S. L. Niu, F. Y. Li, X. Q. Li, Y. F. Long, Y. J. Xiao, M. Greco, R. Baldini Ferroli, Niu Xiaoyang, R. E. Mitchell, Z. X. Meng, H. Liang, M. Fritsch, S. Ahmed, Ke Liu, Q. A. Malik, G. Mezzadri, X. Q. He, L. P. Zhou, Y. M. Ma, Z. P. Mao, X. A. Xiong, J. Fang, Z. Gao, Ch. Rosner, A. A. Zafar, Magnus Wolke, Y. F. Liang, G. F. Cao, K. Y. Liu, S. Qian, Q. An, Jialun Ping, D. P. Jin, K. H. Rashid, Z. B. Li, K. Zhang, Y. T. Liang, X. Y. Zhang, S. J. Chen, W. Ikegami Andersson, Y. F. Wang, K. J. Li, J. Libby, Dayong Wang, N. Qin, M. Lara, X. H. Mo, L. S. Wang, Xiaozhong Huang, Yaquan Fang, A. Pitka, J. B. Liu, Y. J. Sun, Yifan Yang, Andrzej Kupsc, T. Hussain, J. F. Sun, X. Y. Ma, Z. Liu, M. L. Chen, K. Schoenning, Q. Y. Li, B. S. Zou, S. Marcello, Y. P. Lu, Niklaus Berger, Y. Zeng, W. X. Gong, S. Lusso, L. L. Wang, H. Cai, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, J. J. Song, L. Sun, M. Kuemmel, Matthew Glenn Kurth, W. Shan, X. H. Sun, Dan Wang, Krisztian Peters, G. R. Liao, X. Liu, H. R. Qi, X. L. Luo, K. Begzsuren, F. Bianchi, Serkant Ali Cetin, Zongyuan Wang, Q. Ouyang, S. S. Fang, Y. B. Liu, Huanhuan Liu, G. Felici, H. J. Li, Q. L. Xiu, X. Tang, A. Yuncu, M. Rolo, F. Cossio, Yunlong Zhang, H. L. Liu, D. Bettoni, R. Poling, S. Zhu, M. Destefanis, M. Qi, H. J. Yang, X. Zhou, I. Tapan, Y. H. Yan, J. W. Zhao, Y. C. Zhu, Y. Zhang, E. Boger, T. Held, M. Albrecht, W. D. Li, B. T. Tsednee, J. Min, Ling Zhao, B. Kopf, K. L. He, M. Z. Wang, Jimin Zhao, P. L. Li, S. F. Zhang, Zhiqing Liu, T. Johansson, J. F. Chang, O. B. Kolcu, X. Cai, L. Lavezzi, X. Q. Hao, M. Richter, Z. Ning, Jun-Yi Zhang, Y. P. Guo, Z. P. Zhang, P. L. Chen, D. W. Bennett, Zujian Wang, Y. Bai, C. Sowa, Y. B. Zhao, J. Dong, Y. Q. Wang, S. Nisar, C. J. Tang, D. Xiao, X. Y. Jiang, M. M. Ma, Y. Pan, J. Chai, G. X. Sun, J. V. Bennett, Z. Jiao, Fu-Hu Liu, and D. H. Zhang

Subjects
Physics, Particle physics, Flavor, Lepton, Universality (dynamical systems)
Published
2020

39. Association Between MTHFR C677T Polymorphism and Congenital Heart Disease

Author

Peng-Fei, Liu, Bing, Ding, Jun-Yi, Zhang, Xiao-Fei, Mei, Fei, Li, Peng, Wu, Chun-Hao, Mei, Ya-Feng, Zhou, and Tan, Chen

Subjects
Heart Defects, Congenital, Humans, Genetic Predisposition to Disease, Methylenetetrahydrofolate Reductase (NADPH2)
Abstract

Many published studies have evaluated the association between the 5,10-methylenetetrahydrofolate reductase (MTHFR) C677T (rs1801133) polymorphism and the risk of congenital heart disease (CHD); however, the specific conclusion is still controversial.To get a more accurate conclusion, we used a meta-analysis to evaluate the association between the MTHFR gene C677T polymorphism and the risk of CHD.Based on the design-based search strategy, a comprehensive literature search was conducted on PubMed, OVID, Cochrane Library, Embase, Wanfang, CNKI, and Web of Science. We selected the Newcastle-Ottawa Scale (NOS) to assess the quality of the included studies. We performed a heterogeneity test on the results of the study and calculated the combined odds ratios (ORs) and its corresponding 95% confidence intervals (95% CIs) under a random- or fixed-effect model. Subgroup analyses were conducted by ethnicity, source of controls, sample size, and genotyping method. Sensitivity analysis was used to insure authenticity of this meta-analysis result. Egger's test and Begg's funnel plot were performed to detect publication bias.Eventually, our meta-analysis included 15 eligible studies. We observed a significant correlation between the MTHFR C677T polymorphism and the development of CHD in the recessive model (OR: 1.35, 95% CI: 1.06-1.71, P = 0.006) for the overall population. In subgroups stratified by ethnicity and source of controls, subgroup analyses indicated similar associations in Asians and hospital-based groups, but not for Caucasians and population-based groups. Egger's test and Begg's funnel plot demonstrated no significant publication bias in our study.Our analysis identified that MTHFR C677T allele is a risk genetic for CHD development, especially in Asians compared with Caucasians.

Published
2020

40. Confined variational calculation of o -Ps–He scattering properties

Author

Jun-Yi Zhang, H. H. Xie, Ying Qian, Meng-Shan Wu, Kalman Varga, Udo Schwingenschlögl, Zhenya Yan, and X. Gao

Subjects
Physics, Scattering, Ab initio, Collision, 01 natural sciences, 010305 fluids & plasmas, Positronium, Cross section (physics), 0103 physical sciences, Atomic physics, 010306 general physics, Spectroscopy, Energy (signal processing), Doppler broadening
Abstract

High-precision quantum-mechanical calculations have been developed to investigate positronium (Ps) scattering. Positronium scattering experiments are a powerful tool to study positronium-matter interactions, but the theoretical description of these experiments needs better accuracy. We have developed an ab initio confined variational approach that can reach higher collision energy, includes higher orbital momenta and uses small confining radii. Calculation of the Ps--He momentum-transfer cross section shows that the experimental Doppler broadening spectroscopy results are questionable. The energy dependence of the pickoff annihilation rate is also calculated, demonstrating an important role of the so far neglected $P$-wave contribution.

Published
2020

41. Long-range interactions of the ground state muonium with atoms

Author

Michael W. J. Bromley, Li-Yan Tang, Yang Heping, Kalman Varga, Zong-Chao Yan, Jun-Yi Zhang, and Meng-Shan Wu

Subjects
Physics, Range (particle radiation), 010304 chemical physics, Muonium, General Physics and Astronomy, Noble gas, 010402 general chemistry, 01 natural sciences, 0104 chemical sciences, 0103 physical sciences, Physical and Theoretical Chemistry, Atomic physics, Ground state, Dispersion (chemistry), Wave function, Scaling
Abstract

The scaling relations for the dispersion coefficients of long-range interactions between the Mu(1s)-Mu(1s, 2s, or 2p) systems and the H(1s)-H(1s, 2s, or 2p) systems are obtained using analytical properties of hydrogenic wavefunctions, which allows us to obtain the dispersion coefficients for Mu(1s)-Mu(1s, 2s, or 2p) systems from the corresponding H(1s)-H(1s, 2s, or 2p) systems. Additionally, the dispersion coefficients of long-range interactions of Mu(1s) with the ground-state H, noble gas atoms He, Ne, Ar, Kr, and Xe, alkali-metal atoms Li, Na, K, and Rb, alkaline-earth atoms Be, Mg, Ca, and Sr, and Cu, Ag, F, and Cl atoms are calculated.

Published
2020

42. Application of Support Vector Machine-Based Classification Extremum Method in Flexible Mechanism

Author

Bai Bin, Li Ze, Wei Zhang, and Jun‐yi Zhang

Subjects
Artificial neural network, Computer science, Mechanical Engineering, Hinge, 020101 civil engineering, Control engineering, 02 engineering and technology, 0201 civil engineering, Mechanism (engineering), Support vector machine, ComputingMethodologies_PATTERNRECOGNITION, 0202 electrical engineering, electronic engineering, information engineering, 020201 artificial intelligence & image processing, Quadratic programming, Reliability (statistics)
Abstract

The computational efficiencies of traditional reliability methods, such as Monte Carlo (MC), are extremely low. There are also some shortcomings for surrogate model (SM)-based methods, e.g., the sample points of the quadratic polynomial (QP)-MC grow exponentially with the increases of random variables and the artificial neural network (ANN)-MC may exhibit overfitting with limited sample numbers, etc. However, the characteristic of support vector machine (SVM) is that it specifically fits for small samples and has strong learning and good generalization abilities so that it can obtain an optimal solution even with limited samples. In this case, a high-efficiency and high-accuracy dynamic reliability framework called as SVM-based classification extremum method (SVM-CEM) combining SVM classification theory with random probability model based on optimization idea is proposed, which is very suitable for the flexible mechanism (FM) that has few samples. First, an implicit limit state equation (LSE) of dynamic response and a reliability model with multiple failure modes for FM are established. The kernel function is introduced in building the model, the solution of optimal classification hyperplane is translated into a dual problem of convex quadratic programming optimization, which is regarded as the surrogate model of FM’s dynamic response extreme value (DREV). Then, this method is used to analyze the dynamic reliability of FM’s maximum angular acceleration (MAA). Finally, to reveal the validity of this method, SVM-CEM is compared with MC, QP-MC, and ANN-MC. The conclusion is that the computational efficiency of SVM-CEM is better than that of MC, QP-MC, and ANN-MC ensuring the computational accuracy. The proposed SVM-CEM in dynamic reliability analysis has important guiding significance for the application of FM’s practical engineering.

Published
2020

43. Partial wave analysis of ψ(3686)→K+K−η

Author

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

Subjects
Physics, 010308 nuclear & particles physics, Branching fraction, Partial wave analysis, 0103 physical sciences, Resonance, State (functional analysis), Atomic physics, 010306 general physics, 01 natural sciences
Abstract

Using a sample of (448.1±2.9)×106 ψ(3686) events collected with the BESIII detector, we perform the first partial wave analysis of ψ(3686)→K+K-η. In addition to the well established states, ϕ(1020), ϕ(1680), and K3*(1780), contributions from X(1750), ρ(2150), ρ3(2250), and K2*(1980) are also observed. The X(1750) state is determined to be a 1-- resonance. The simultaneous observation of the ϕ(1680) and X(1750) indicates that the X(1750), with previous observations in photoproduction, is distinct from the ϕ(1680). The masses, widths, branching fractions of ψ(3686)→K+K-η, and the intermediate resonances are also measured.

Published
2020

44. Cross section measurement of e+e−→η′J/ψ from s=4.178 to 4.600 GeV

Author

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

Subjects
Nuclear physics, Physics, 010308 nuclear & particles physics, Electron–positron annihilation, 0103 physical sciences, Detector, 010306 general physics, 01 natural sciences, Storage ring
Abstract

The cross section of the process e+e-→η′J/ψ is measured at center-of-mass (c.m.) energies from s=4.178 to 4.600 GeV using data samples corresponding to a total integrated luminosity of 11 fb-1 collected with the BESIII detector operating at the BEPCII storage ring. The dependence of the cross section on s shows an enhancement around 4.2 GeV. While the shape of the cross section cannot be fully explained with a single ψ(4160) or ψ(4260) state, a coherent sum of the two states does provide a reasonable description of the data.

Published
2020

45. Trotterized adiabatic quantum simulation and its application to a simple all-optical system

Author

Lian-Ao Wu, Jun-Yi Zhang, Mark S. Byrd, and Yifan Sun

Subjects
Physics, General Physics and Astronomy, Quantum simulator, Adiabatic quantum computation, 01 natural sciences, 010305 fluids & plasmas, adiabatic quantum computing, symbols.namesake, 0103 physical sciences, symbols, Statistical physics, 010306 general physics, Adiabatic process, Hamiltonian (quantum mechanics), Ground state, Quantum, linear optics, Boson, Quantum computer, Trotterization
Abstract

As first proposed for the adiabatic quantum information processing by Wu et al (2002 Phys. Rev. Lett. 89 057904), the Trotterization technique is a very useful tool for universal quantum computing, and in particular, the adiabatic quantum simulation of quantum systems. Given a boson Hamiltonian involving arbitrary bilinear interactions, we propose a static version of this technique to perform an optical simulation that would enable the identification of the ground state of the Hamiltonian. By this method, the dynamical process of the adiabatic evolution is mapped to a static linear optical array which is robust to the errors caused by dynamical fluctuations. We examine the cost of the physical implementation of the Trotterization, i.e. the number of discrete steps required for a given accuracy. Two conclusions are drawn. One is that the number of required steps grows much more slowly than the system size if the number of non-zero matrix elements of Hamiltonian is not too large. The second is that small fluctuations of the parameters of optical elements do not affect the first conclusion. This implies that the method is robust against the certain type of errors as we considered. Last but not least, we present an example of implementation of the simulation on a photonic chip as well as an optimized scheme. By such examples, we show a reduction of the costs compared to its classical counterpart and the potential for further improvement, which promotes a more general application. We thank Z Feng for his helpful discussions about quantum chip design. We acknowledge grant support from the Spanish MINECO/FEDER Grants FIS2015-69983-P, the Basque Government Grant IT986-16 and UPV/EHUUFI 11/55. MSB was partially supported by the NSF, MPS under award number PHYS-1820870.

Published
2020

46. Observation of the Semileptonic D+ Decay into the K¯1(1270)0 Axial-Vector Meson

Author

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

Subjects
Physics, Particle physics, Meson, Physics::Instrumentation and Detectors, Branching fraction, Detector, General Physics and Astronomy, 01 natural sciences, law.invention, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Collider, Pseudovector, Energy (signal processing)
Abstract

By analyzing a 2.93 fb(-1) data sample of e(+)e(-) collisions, recorded at a center-of-mass energy of 3.773 GeV with the BESIII detector operated at the BEPCII collider, we report the first observa ...

Published
2019

47. Statistical properties of the rovibrational bound levels for Ar2Kr.

Author

Meng-Shan Wu, Hui-Li Han, Cui Yao, Xiao-Rong He, Jun-Yi Zhang, and Ting-Yun Shi

Abstract

We calculate the rovibrational bound levels with total angular momentum J = 0, 1 of 40Ar2 84Kr trimer using the slow variable discretization method combined with the finite-element method-discrete variable representation basis. The statistical distributions of the rovibrational levels for JΠ = 0e, 1e, and 1o symmetries are presented and the effects of the Axilrod-Teller potential term are considered. For the 0e and 1e symmetries, the Axilrod-Teller term makes the spectra become fully chaotic. However, for the 1o symmetry, statistical properties depend mainly on the coupling between K = 0 and K = 1 and the Axilrod-Teller term has a small effect. [ABSTRACT FROM AUTHOR]

Published
2017
Full Text
View/download PDF

49. The influence of nonlinearities on jet noise modeling based on parabolized stability equation

Author

Peng-Jun-Yi Zhang, Zhen-Hua Wan, and De-Jun Sun

Subjects
Fluid Flow and Transfer Processes, Physics, Jet (fluid), Mechanical Engineering, Computational Mechanics, Mechanics, Condensed Matter Physics, Noise (electronics), Jet noise, Nonlinear system, Mechanics of Materials, Coherence (signal processing), Mean flow, Sound pressure, Large eddy simulation
Abstract

With the aid of a large eddy simulation (LES) model of a turbulent jet, we study the modeling of jet noise based on wavepackets by considering a certain degree of nonlinearity. Linear parabolized stability equations (PSEs) are utilized to solve the spatial evolution of wavepackets with the base flow obtained from the LES. The spectral proper orthogonal decomposition (SPOD) is performed to extract the most energetic coherent structures. Since the mean flow includes partial nonlinearity, improved agreement of hydrodynamic pressure fields between SPOD-filtered results and linear-PSE solutions is obtained in the near field. Deviations only occur when the coherent structures decay. Although linear-PSE solutions represent the near-field hydrodynamics reasonably, the far-field noise propagated from this linear model shows a large deviation from the LES results. Then, a small external harmonic forcing is added to the right-hand side of the PSE to mimic the effects of nonlinearity due to incoherent fluctuations on the late evolution of near-field wavepackets, and an adjoint approach is further utilized to search for optimal forcing distribution. Optimized forcing is mainly located near the critical layer; enhances the energy of wavepackets; and raises the sound radiation efficiency, but to a limited extent. Meanwhile, the coherence-matched PSE wavepacket is proposed to incorporate the coherence decay of wavepackets calculated based on LES. An improved agreement in far-field sound pressure levels for low-frequency components is achieved. In short, these findings all prove the vital role of nonlinearity in jet noise modeling, and the current modeling approaches have made some progress. However, a more physics-based and generalized nonlinear model is still required.

Published
2021

50. Study of J/ψ and ψ(3686)→Σ(1385)0Σ¯(1385)0 and Ξ0Ξ¯0

Author

Tao Luo, X. N. Ma, Y. T. Liang, F. De Mori, X. Y. Zhou, F. E. Maas, M. Fritsch, H. H. Liu, J. C. Li, B. X. Yu, T. Hu, S. L. Niu, Zhi Zeng, J. Zhuang, M. Kavatsyuk, F. Y. Li, R. Farinelli, Xiao-Rui Lyu, Z. J. Xiao, X. Q. Li, Y. F. Long, M. X. Luo, G. S. Varner, Zhiqing Liu, C. Hu, M. Maggiora, Ling Zhao, M. Greco, O. Bakina, D. V. Dedovich, X. F. Wang, Minglin Ma, X. Tang, J. Min, T. Johansson, J. F. Chang, H. S. Chen, Lei Zhao, Z. L. Hou, B. X. Zhang, H. L. Ma, D. M. Li, G. F. Xu, Q. M. Ma, O. B. Kolcu, X. Cai, S. Jin, P. X. Shen, H. L. Dai, Igor Boyko, Y. Ding, B. Kopf, M. Y. Dong, Z. Wu, B. J. Liu, K. L. He, B. Kloss, X. Y. Niu, Y. Yuan, L. W. Jiang, Y. S. Zhu, C. Z. Yuan, X. Q. Hao, K. Y. Liu, M. Pelizaeus, Y. B. Zhao, Y. Guo, M. Z. Wang, Xiaozhong Huang, Z. B. Li, W. Ikegami Andersson, Q. Ouyang, Jimin Zhao, Zhiqing Zhang, S. S. Fang, X. Y. Song, K. J. Zhu, W. Shan, Y. H. Zheng, Cong-Feng Qiao, O. Albayrak, T. Holtmann, J. Dong, W. Kühn, J. M. Bian, Z. Y. You, Z. A. Zhu, Bingxuan Liu, Yao Wang, Y. Q. Wang, Q. Liu, Andrzej Kupsc, M. Qi, H. J. Yang, Guangshun Huang, S. Nisar, L. Yan, R. Baldini Ferroli, X. D. Ruan, Y. B. Liu, Z. H. Wang, K. Goetzen, L. L. Ma, L. Gong, C. J. Tang, Y. Hu, Y. P. Lu, B. Wang, A. Calcaterra, Z. G. Zhao, P. L. Wang, X. L. Gao, M. L. Chen, S. J. Zhao, N. Yu. Muchnoi, X. S. Kang, Y. H. Zhang, J. Y. Liu, Y. H. Guan, H. B. Liu, W. G. Li, Q. P. Ji, S. Spataro, X. P. Xu, Y. F. Wang, G. Li, L. Zotti, L. G. Xia, Kai Liu, Y. Y. Liu, C. Leng, P. Musiol, C. F. Redmer, Xiaocong Ai, Lei Li, C. Schnier, D. Xiao, Q. A. Malik, C. Dong, S. Sosio, X. L. Luo, A. Amoroso, C. P. Shen, A. Dbeyssi, F. A. Harris, W. P. Wang, S. B. Liu, M. Kornicer, F. Bianchi, X. Y. Ma, J. H. Zou, M. Bertani, Q. J. Xu, W. X. Gong, Z. Haddadi, Jun-Yi Zhang, Y. P. Guo, Z. P. Zhang, H. H. Zhang, J. C. Chen, X. T. Huang, Z. J. Sun, H. Loehner, Yu Zhang, Magnus Wolke, Y. F. Liang, A. A. Zafar, Q. Gao, Z. Ning, L. Yang, L. J. Wu, Joachim Pettersson, Y. N. Gao, H. M. Liu, Y. Zhang, X. N. Li, C. D. Fu, Z. Y. Wang, C. Q. Feng, X. R. Chen, Y. J. Mo, Z. Y. Deng, A. Julin, Xuanhong Lou, Haiping Peng, G. F. Cao, G. Mezzadri, X. Fang, S. S. Sun, G. Rong, Nasser Kalantar-Nayestanaki, D. P. Jin, Y. Nefedov, Q. An, J. H. Liu, W. C. Yan, Z. L. Huang, Feng Liu, Ke Wang, J. J. Xu, G. R. Liao, Xingguo Li, X. H. Sun, D. W. Bennett, Zujian Wang, J. Z. Fan, A. Zhemchugov, C. Morales Morales, Dayong Wang, N. Qin, T. Weber, Y. J. Mao, Y. B. Li, H. X. Yang, M. Ablikim, Z. G. Wang, H. Y. Zhang, P. F. Duan, E. H. Thorndike, J. Q. Zhang, W. Gradl, I. Garzia, M. Ripka, J. S. Huang, H. B. Li, A. G. Denig, C. L. Luo, J. Z. Bai, X. Y. Jiang, C. X. Liu, G. F. Chen, C. C. Zhang, P. Kiese, G. Felici, Yunlong Zhang, Gianfranco Morello, Fenfen An, L. Q. Qin, B. L. Wang, D. Y. Wang, J. Y. Zhang, F. Feldbauer, B. Zhong, L. B. Guo, S. L. Olsen, R. A. Briere, X. B. Ji, M. Tiemens, S. Ahmed, Y. X. Yang, T. C. Zhao, X. S. Jiang, D. Bettoni, Liqing Xu, Cui Li, J. L. Zhang, P. Patteri, X. Y. Shen, R. Poling, X. C. Chen, H. Muramatsu, Ulrich Wiedner, R. Kliemt, Klaus Peters, L. P. Zhou, J. P. Liu, Y. Pan, J. Chai, Y. K. Heng, H. Leithoff, G. X. Sun, J. V. Bennett, Y. M. Ma, J. G. Messchendorp, Jie Yu, H. J. Li, Jin Li, J. P. Dai, Q. L. Xiu, T. J. Min, Jianping Zheng, S. Zhu, F. Li, T. Ma, Z. Jiao, Fu-Hu Liu, D. H. Zhang, F. C. Ma, O. Cakir, R. E. Mitchell, G. Cibinetto, A. Hafner, Qiunan Xu, S. J. Chen, Z. P. Mao, Q. Zhao, Y. Z. Sun, M. G. Zhao, R. P. Guo, Y. H. Xie, A. Q. Guo, J. Fang, Tao Li, Y. N. Zhang, Xiang Zhou, J. F. Qiu, L. Fava, Gang Zhao, S. Han, J. J. Zhang, M. Destefanis, W. M. Song, Z. Gao, Y. X. Xia, S. H. Zhu, Bibo Ke, L. H. Wu, Ch. Rosner, M. Savrie, Z. H. Qin, L. Xia, H. Liang, W. B. Yan, M. N. Achasov, I. B. Nikolaev, I. Uman, S. Pacetti, P. Larin, D. J. Ambrose, J. F. Sun, S. Z. Chen, M. Albrecht, S. Marcello, W. D. Li, Y. Zeng, Yaquan Fang, Jie Zhao, D. X. Lin, H. M. Hu, K. Li, X. K. Zhou, Fang Liu, I. Tapan, K. Schoenning, Q. Y. Li, B. S. Zou, Y. H. Yan, J. W. Zhang, Y. B. Chen, Xiaofeng Zhu, J. Z. Zhang, J. W. Zhao, I. Denysenko, Niklaus Berger, Y. C. Zhu, B. Y. Zhang, H. Xiao, T. Held, X. Liu, H. R. Qi, Serkant Ali Cetin, D. Y. Liu, J. B. Jiao, S. Q. Zhang, S. Qian, Jialun Ping, K. Zhang, X. Y. Zhang, M. Lara, J. B. Liu, Y. J. Sun, E. Boger, M. H. Gu, H. Y. Sheng, C. X. Yu, B. Zheng, R. G. Ping, X. L. Ji, Z. T. Sun, G. A. Chelkov, Talib Hussain, Z. A. Liu, V. Prasad, Yanwei Wang, A. Yuncu, Y. G. Xie, Y. Ban, P. Weidenkaff, F. H. Heinsius, S. X. Du, Z. L. Dou, S. P. Wen, X. S. Qin, X. R. Zhou, Cheng Li, X. K. Chu, M. H. Ye, Peilian Liu, Lingxuan Zhang, Zhiyong Zhang, L. D. Liu, L. Y. Dong, W. J. Zheng, F. Nerling, J. H. Yin, K. H. Rashid, M. Shao, Y. T. Gu, E. Fioravanti, X. L. Kang, A. Sarantsev, D. H. Wei, P. R. Li, J. S. Lange, Q. W. Zhao, X. H. Mo, L. S. Wang, L. L. Wang, H. Cai, H. J. Lu, and J. G. Lu

Subjects
Baryon, Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Angular distribution, 010308 nuclear & particles physics, Branching fraction, Isospin, Electron–positron annihilation, 0103 physical sciences, 010306 general physics, 01 natural sciences
Abstract

We study the decays of J / ψ and ψ ( 3686 ) to the final states Σ ( 1385 ) 0 Σ ¯ ( 1385 ) 0 and Ξ 0 Ξ ¯ 0 based on a single baryon tag method using data samples of ( 1310.6 ± 7.0 ) × 10 6 J / ψ and ( 447.9 ± 2.9 ) × 10 6 ψ ( 3686 ) events collected with the BESIII detector at the BEPCII collider. The decays to Σ ( 1385 ) 0 Σ ¯ ( 1385 ) 0 are observed for the first time. The measured branching fractions of J / ψ and ψ ( 3686 ) to Ξ 0 Ξ ¯ 0 are in good agreement with, and much more precise than, the previously published results. The angular parameters for these decays are also measured for the first time. The measured angular decay parameter for J / ψ → Σ ( 1385 ) 0 Σ ¯ ( 1385 ) 0 , α = − 0.64 ± 0.03 ± 0.10 , is found to be negative, different to the other decay processes in this measurement. In addition, the “12% rule” and isospin symmetry in the decays of J / ψ and ψ ( 3686 ) to Ξ Ξ ¯ and Σ ( 1385 ) Σ ¯ ( 1385 ) are tested.

Published
2017

Catalog

Books, media, physical & digital resources
See catalog results