☆ 4.5 Article

Perfect DD* Molecular Prediction Matching the T cc Observation at LHCb

CHINESE PHYSICS LETTERS (2021)

期刊

CHINESE PHYSICS LETTERS

卷 38, 期 9, 页码 -

出版社

IOP Publishing Ltd

DOI: 10.1088/0256-307X/38/9/092001

关键词

-

类别

Physics, Multidisciplinary

资金

China National Funds for Distinguished Young Scientists [11825503]
National Key Research and Development Program of China [2020YFA0406400]
111 Project [B20063]
National Natural Science Foundation of China [11975033, 12070131001, 12047501]

向作者/读者索取更多资源

Protocol

Reagent

智能总结 New
摘要

In 2012, a study identified a loosely bound molecular state composed of two charmed mesons, which is very close to the D*D threshold with a binding energy of around 0.47 MeV. This prediction was later confirmed by new observations from the LHCb.

In 2012, we investigated the possible molecular states composed of two charmed mesons [Phys. Rev. D 88 (2013) 114008; 2012 arXiv:1211.5007 [hep-ph]]. The D*D system with the quantum numbers of I(J(P) ) = 0(1(+)) was found to be a good candidate of the loosely bound molecular state. This state is very close to the D*D threshold with a binding energy around 0.47 MeV. This prediction was confirmed by the new LHCb observation of T-cc(+) [see Franz Muheim's talk at the European Physical Society conference on high energy physics 2021].

作者

我是这篇论文的作者

点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5

评分不足

次要评分

新颖性

-

重要性

-

科学严谨性

-

评价这篇论文

推荐

Article Nanoscience & Nanotechnology

Driving plasmonic nanoantennas at perfect impedance matching using generalized coherent perfect absorption

Philipp Grimm, Gary Razinskas, Jer-Shing Huang, Bert Hecht

Summary: The study demonstrates that a generalized version of coherent perfect absorption (gCPA) can be applied to nanoresonators with radiative losses, offering the possibility of achieving perfect impedance matching between different components in plasmonic systems.

NANOPHOTONICS (2021)

添加到收藏夹

Article Astronomy & Astrophysics

Hadronic decays of the heavy-quark-spin molecular partner of T cc

Zhao-Sai Jia, Mao-Jun Yan, Zhen-Hua Zhang, Pan-Pan Shi, Gang Li, Feng-Kun Guo

Summary: Based on the hypothesis that the Tcc discovered at LHCb is a D0=D0 hadronic molecule, we studied the partial width of its heavy quark spin partner, the Tcc, as a D⠂0D⠂0 shallow bound state. We considered the contributions of the D⠂D and D⠂pi final state interactions and found that the rescattering corrections can significantly affect the decay widths. The total width of the Tcc was predicted to be about 41 keV.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Revisiting the DD* chiral interactions with the local momentum-space regularization up to the third order and the nature of T cc

Bo Wang, Lu Meng

Summary: In this study, we revisit the DD* interactions in chiral effective field theory up to the third order for the first time. We use local momentum-space regularization to deal with the pion-exchanged interactions and focus on their long-range behaviors. The short-range contact interactions and subleading pion-charmed meson couplings are estimated using a phenomenological resonance saturation model. Our calculations show that the DD* binding mechanism is very different from that of the NN system due to the weaker subleading pion-charmed meson couplings. We also analyze the analytic structure of the two-pion exchange interactions in the coordinate space and find a similar but slightly different asymptotic behavior compared to the NN interactions. The binding solution is only found in the isoscalar channel. Our findings support the molecular interpretation of T thorn cc.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Strong decays of T cc plus at NLO in an effective field theory

Lin Dai, Sean Fleming, Reed Hodges, Thomas Mehen

Summary: The T+cc exotic meson, discovered by the LHCb Collaboration in 2021, is likely a molecular state composed of D(*)0 and D(*)+ mesons. In this study, we calculate the next-to-leading-order (NLO) contributions to the strong decay of T+cc using an effective field theory for D mesons and pions, considering the effects of one-pion exchange and final-state rescattering. Our results, which include corrections to the total width and differential distribution in the invariant mass of the final-state D-meson pair, are consistent with experimental data from LHCb when NLO contributions are taken into account. We identify the primary uncertainties in our calculations as being related to the scattering length and effective range in D-meson scattering.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Physics, Applied

Metamaterial as perfect absorber for high sensitivity refractive index based biosensing applications at infrared frequencies

Shahriar Mostufa, Parsa Yari, Bahareh Rezaei, Kanglin Xu, Jiajia Sun, Zongqian Shi, Kai Wu

Summary: In this paper, a novel design of a metal/insulator/metal metamaterial unit cell absorber is introduced, which achieves nearly perfect absorption at the resonance infrared frequency of 39.8 THz. The design is comprehensively analyzed using finite element method computational analysis and theoretical explanations through effective medium theory, impedance matching, and field distribution analysis. The structural parameters of the sensor are optimized to maximize absorption peak, and the metamaterial unit cell demonstrates remarkable sensitivity in detecting changes in refractive index, making it a promising candidate for various sensing applications including cancer detection.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2023)

添加到收藏夹

Article Nanoscience & Nanotechnology

In Situ Observation of Chemically Induced Protein Denaturation at Solvated Interfaces

Peter Niraj Nirmalraj, Marta D. Rossell, Walid Dachraoui, Damien Thompson, Michael Mayer

Summary: This study demonstrates the use of liquid-based atomic force microscope and graphene liquid-cell-based scanning transmission electron microscope to observe chemically induced protein unfolding. The results show that fully folded ferritin proteins transform into rings after urea treatment but not after guanidinium treatment. Nanorings are a specific signature of denaturation of holo-ferritins after exposure to sufficiently high urea concentrations. The study also suggests that electrostatic destabilization triggers denaturation of ferritin as urea makes direct contact with the protein and disrupts the water H-bonding network in the ferritin solvation shell.

ACS APPLIED MATERIALS & INTERFACES (2023)

添加到收藏夹

Article Chemistry, Physical

Crystal structure prediction at finite temperatures

Ivan A. Kruglov, Alexey V. Yanilkin, Yana Propad, Arslan B. Mazitov, Pavel Rachitskii, Artem R. Oganov

Summary: Crystal structure prediction, a long-standing problem in crystallography and materials science, has been largely solved with methods such as energy landscape exploration and global optimization. However, existing methods neglect temperature and may miss high-temperature phases. In this study, a new and cost-effective solution is developed to predict crystal structures at finite temperatures, taking into account thermal effects and providing accurate results.

NPJ COMPUTATIONAL MATERIALS (2023)

添加到收藏夹

Article Chemistry, Physical

Thermophysical property prediction of biodiesel mixtures at extreme conditions using molecular dynamics simulation

Cheng Chen, Daniel Mira, Zhihao Xing, Xi Jiang

Summary: This study uses molecular dynamics simulation to predict the thermophysical properties of biodiesel under different temperatures and pressures. The predicted properties include critical temperature, critical density, critical pressure, surface tension, viscosity, thermal conductivity, and diffusion coefficient. The study finds that long-range dispersion interaction is essential for predicting surface tension accurately, and averaging over a sufficient number of independent replication simulations is necessary to eliminate statistical errors in viscosity calculation. The reliability of the molecular dynamics approach is validated against experimental data. Additionally, the study compares the properties of biodiesel with conventional diesel, revealing higher values of critical temperature, surface tension, and viscosity, as well as lower diffusion, indicating the need for further optimization of injection systems for desired combustion mixing.

JOURNAL OF MOLECULAR LIQUIDS (2022)

添加到收藏夹

Article Polymer Science

Prediction of Electronic Properties of Radical-Containing Polymers at Coarse-Grained Resolutions

Riccardo Alessandri, Juan J. de Pablo

Summary: The properties of soft electronic materials depend on the coupling of electronic and conformational degrees of freedom. Traditional approaches for describing these properties require multiscale methods, which can access electronic properties and sample the conformational space of soft materials. In this study, a machine learning method combined with coarse-grained techniques is proposed to replace the traditional backmapping-based approaches without sacrificing accuracy.

MACROMOLECULES (2023)

添加到收藏夹

Article Surgery

Construction of a mortality risk prediction model for elderly people at risk of lobectomy for NSCLC

Hongzhen Zhang, Dingfei Ren, Danqing Cheng, Wenping Wang, Yongtian Li, Yisong Wang, Dekun Lu, Feng Zhao

Summary: A personalized predictive tool was developed to assess the risk of postoperative mortality in elderly patients undergoing lobectomy for lung cancer. Factors such as sex, age, race, histology, and grade were identified as independent predictors of postoperative death in elderly patients.

FRONTIERS IN SURGERY (2023)

添加到收藏夹

Article Chemistry, Multidisciplinary

Prediction and Control of Thermal Transport at Defective State Gr/h-BN Heterojunction Interfaces

Mingjian Zhou, Liqing Liu, Jiahao Liu, Zihang Mei

Summary: The regulation of interfacial thermal energy transport in graphene/hexagonal boron nitride heterojunctions is analyzed using non-equilibrium molecular dynamics (NEMD) simulations in this paper. The results show that atomic doping and vacancy defects play a significant role in modulating interfacial heat transport. Furthermore, a BP neural network algorithm is developed for fast prediction of interfacial thermal conductivity in two-dimensional heterogeneous structures, showing a prediction error of less than 2%.

NANOMATERIALS (2023)

添加到收藏夹

Article Engineering, Chemical

In Situ Observation of Chemical Reactions at Buried Solid/Solid Interfaces in Coextruded Multilayer Polymer Films

Daniel Rossi, Yuchen Wu, Rajesh Paradkar, Yifan Dong, Xiaoyun Chen, Christopher J. Tucker, Carol Mohler, Tzu-Chi Kuo, Zhan Chen

Summary: This study utilizes interface-sensitive sum frequency generation (SFG) vibrational spectroscopy to nondestructively probe the chemical reactions at the buried interface of multilayer polymer films. The research demonstrates that SFG can identify the reaction products between maleic anhydride (MAH) and polyamide, as well as monitor changes in interfacial molecular orientation. This approach is generally applicable to studying chemical reactions and molecular interactions in multilayer polymer films.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2023)

添加到收藏夹

Article Biochemistry & Molecular Biology

Immunoinformatics based design and prediction of proteome-wide killer cell epitopes of Leishmania donovani: Potential application in vaccine development

Mohammad Kashif, Sumit Kumar Hira, Partha Pratim Manna

Summary: Despite extensive efforts, the search for therapy against leishmaniasis has not progressed much. This study employed mining strategy and immunoinformatics to identify potential vaccine candidates, screening 21 antigenic proteins and predicting 11 immunogenic epitopes for possible vaccine development.

JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS (2022)

添加到收藏夹

Article Materials Science, Composites

Prediction of chain-growth polymerisation of vinyl ester resin structure at the carbon fibre interface

Siyuan He, Tiffany R. Walsh

Summary: Carbon-fibre reinforced polymer composites are important in various industries due to their light weight and strong mechanical performance, with the interface between the resin matrix and carbon fiber surface being a critical zone. Molecular simulations are crucial for studying structure/property relationships at this interface, especially in the case of vinyl ester resin interfaces which have been relatively under-explored. Results from simulating the polymerization of vinyl ester/styrene resin near a pristine fiber surface showed poor interfacial integrity, indicating the need for further exploration of surface functionalization strategies for vinyl ester resin carbon fiber composites.

COMPOSITES SCIENCE AND TECHNOLOGY (2022)

添加到收藏夹

Article Biochemistry & Molecular Biology

Synthesis, molecular modeling investigation, molecular dynamic and ADME prediction of some novel Mannich bases derived from 1,2,4-triazole, and assessment of their anticancer activity

Sevda Manap, Hilal Medetalibeyoglu, Ahsen Kilic, Omer Faruk Karatas, Burak Tuzun, Muzaffer Alkan, Ahmet Bugra Ortaakarsu, Abdurrahman Atalay, Murat Beytur, Haydar Yuksek

Summary: A series of novel Mannich bases containing 1H-1,2,4-triazole-5-one ring were developed and evaluated for cytotoxic activity against human hypopharyngeal carcinoma cells. Compound (M3) exhibited significant anticancer potential and further studies are needed. Molecular docking calculations revealed good theoretical activities of compound (M3) against multiple proteins.

JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS (2023)

添加到收藏夹

Article Agronomy

Can 'relative culm wall thickness' be used to evaluate the lodging resistance of rice?

Zhen-Zhen Li, Fei Deng, Chi Zhang, Li Zhu, Lian-Hua He, Tao Zhou, Hui Lu, Shi-Lin Zhu, Yu-Ling Zeng, Xiao-Yuan Zhong, Wei Zhou, Yong Chen, Wan-Jun Ren, Jian-Feng Hu

Summary: A simple and low-cost index, called relative culm wall thickness (RCWT), is proposed to evaluate the lodging resistance of rice. Through a field experiment, RCWT was found to be significantly correlated with various lodging-related indexes. Rice plants with high RCWT were characterized by lower plant height and center of gravity, as well as shorter basal internodes, thicker culm wall thickness, and smaller pith diameter. These features increased the fullness of the stem, resulting in higher cellulose and lignin content, enhanced bending resistance, and decreased lodging index.

ARCHIVES OF AGRONOMY AND SOIL SCIENCE (2023)

添加到收藏夹

Article Biochemistry & Molecular Biology

IAnimal: a cross-species omics knowledgebase for animals

Yuhua Fu, Hong Liu, Jingwen Dou, Yue Wang, Yong Liao, Xin Huang, Zhenshuang Tang, JingYa Xu, Dong Yin, Shilin Zhu, Yangfan Liu, Xiong Shen, Hengyi Liu, Jiaqi Liu, Xin Yang, Yi Zhang, Yue Xiang, Jingjin Li, Zhuqing Zheng, Yunxia Zhao, Yunlong Ma, Haiyan Wang, Xiaoyong Du, Shengsong Xie, Xuewen Xu, Haohao Zhang, Lilin Yin, Mengjin Zhu, Mei Yu, Xinyun Li, Xiaolei Liu, Shuhong Zhao

Summary: IAnimal is a cross-species, multi-omics knowledgebase that aims to improve the utilization of multi-omics data and simplify data integration for better understanding of gene regulation mechanisms and comprehensive analyses of biological systems.

NUCLEIC ACIDS RESEARCH (2023)

添加到收藏夹

Article Engineering, Chemical

Nanocellulose-intercalated MXene NF membrane with enhanced swelling resistance for highly efficient antibiotics separation

Hongli Zhang, Yiling Zheng, Hongwei Zhou, Shilin Zhu, Jie Yang

Summary: Two-dimensional (2D) nanomaterial-based membranes hold great promise for various applications due to their attractive properties in molecular separation and transport. However, the swelling problem of 2D membranes has hindered their performance. In this study, the insertion of flexible and hydrophilic carboxylated cellulose nanofibers (CNFs) effectively stabilized the Ti3C2Tx MXene laminar architecture, enhancing mechanical strength, fixing interlayer distance, and improving anti-swelling properties. Furthermore, the intercalation of nanocelluloses increased interlayer spacing and created open gaps for fast and selective molecular transport. When applied in antibiotics separative filtration process, the resulting membrane exhibited excellent anti-swelling properties and high selectivity of antibiotics, making it ideal for various applications.

SEPARATION AND PURIFICATION TECHNOLOGY (2023)

添加到收藏夹

Review Physics, Multidisciplinary

Chiral perturbation theory for heavy hadrons and chiral effective field theory for heavy hadronic molecules

Lu Meng, Bo Wang, Guang-Juan Wang, Shi-Lin Zhu

Summary: Chiral symmetry and its spontaneous breaking are essential in both light and heavy hadron systems. Chiral perturbation theory (LPT) is an effective field theory of Quantum Chromodynamics. This paper reviews the research on chiral corrections to the properties of heavy mesons and baryons using LPT, as well as the scattering of light pseudoscalar mesons and heavy hadrons, which helps in understanding new resonances. Furthermore, this paper also discusses the progress on heavy hadronic molecular states within the framework of left, emphasizing the common chiral dynamics governing nuclei and the formation of deuteron and also the shallow bound states or resonances composed of two heavy hadrons.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2023)

添加到收藏夹

Proceedings Paper Physics, Particles & Fields

Molecular tetraquarks and pentaquarks in chiral effective field theory

Bo Wang, Lu Meng, Shi-Lin Zhu

Summary: In this study, we investigated di-hadron interactions including D (D) over bar*/D*(D) over bar, D*(D) over bar, DsD*/D*D-s, BB*/BB* and B*B* in chiral effective field theory (chi EFT) up to next-to-leading (NLO) order. The tetraquark states Z(c)(3900), Z(c)(4020), Z(cs)(3985), Z(b)(10610), Z(b)(10650) above threshold can be explained as corresponding di-hadron resonances. We also studied the interactions of Sigma(()(c)*) (D) over bar(*) to investigate the three hidden-charm pentaquarks Pc(4312), Pc(4440) and Pc(4457). Using the parameters fixed from the Pc states, we predicted possible molecular states in Xi D-c* Xi cD* and Xi & lowast; c recently observed by the LHCb Collaboration. Our predictions of the Xi D-c(*) bound states are in good agreement with two new near-threshold structures.

NUCLEAR AND PARTICLE PHYSICS PROCEEDINGS (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Observation of the decay & chi;cJ & RARR; & omega;-& omega; over bar

M. Ablikim, M. N. Achasov, P. Adlarson, R. Aliberti, A. Amoroso, M. R. An, Q. An, Y. Bai, O. Bakina, I. Balossino, Y. Ban, V. Batozskaya, K. Begzsuren, N. Berger, M. Bertani, D. Bettoni, F. Bianchi, E. Bianco, J. Bloms, A. Bortone, I Boyko, R. A. Briere, A. Brueggemann, H. Cai, X. Cai, A. Calcaterra, G. F. Cao, N. Cao, S. A. Cetin, J. F. Chang, T. T. Chang, W. L. Chang, G. R. Che, G. Chelkov, C. Chen, Chao Chen, G. Chen, H. S. Chen, M. L. Chen, S. J. Chen, S. M. Chen, T. Chen, X. R. Chen, X. T. Chen, Y. B. Chen, Y. Q. Chen, Z. J. Chen, W. S. Cheng, S. K. Choi, X. Chu, G. Cibinetto, S. C. Coen, F. Cossio, J. J. Cui, H. L. Dai, J. P. Dai, A. Dbeyssi, R. E. de Boer, D. Dedovich, Z. Y. Deng, A. Denig, I. Denysenko, M. Destefanis, F. De Mori, B. Ding, X. X. Ding, Y. Ding, Y. Ding, J. Dong, L. Y. Dong, M. Y. Dong, X. Dong, S. X. Du, Z. H. Duan, P. Egorov, Y. L. Fan, J. Fang, S. S. Fang, W. X. Fang, Y. Fang, R. Farinelli, L. Fava, F. Feldbauer, G. Felici, C. Q. Feng, J. H. Feng, K. Fischer, M. Fritsch, C. Fritzsch, C. D. Fu, Y. W. Fu, H. Gao, Y. N. Gao, Yang Gao, S. Garbolino, I Garzia, P. T. Ge, Z. W. Ge, C. Geng, E. M. Gersabeck, A. Gilman, K. Goetzen, L. Gong, W. X. Gong, W. Gradl, S. Gramigna, M. Greco, M. H. Gu, Y. T. Gu, C. Y. Guan, Z. L. Guan, A. Q. Guo, L. B. Guo, R. P. Guo, Y. P. Guo, A. Guskov, W. Y. Han, X. Q. Hao, F. A. Harris, K. K. He, K. L. He, F. H. Heinsius, C. H. Heinz, Y. K. Heng, C. Herold, T. Holtmann, P. C. Hong, G. Y. Hou, Y. R. Hou, Z. L. Hou, H. M. Hu, J. F. Hu, T. Hu, Y. Hu, G. S. Huang, K. X. Huang, L. Q. Huang, X. T. Huang, Y. P. Huang, T. Hussain, N. Huesken, W. Imoehl, M. Irshad, J. Jackson, S. Jaeger, S. Janchiv, J. H. Jeong, Q. Ji, Q. P. Ji, X. B. Ji, X. L. Ji, Y. Y. Ji, Z. K. Jia, P. C. Jiang, S. S. Jiang, T. J. Jiang, X. S. Jiang, Y. Jiang, J. B. Jiao, Z. Jiao, S. Jin, Y. Jin, M. Q. Jing, T. Johansson, S. Kabana, N. Kalantar-Nayestanaki, X. L. Kang, X. S. Kang, R. Kappert, M. Kavatsyuk, B. C. Ke, A. Khoukaz, R. Kiuchi, R. Kliemt, L. Koch, O. B. Kolcu, B. Kopf, M. Kuessner, A. Kupsc, W. Kuehn, J. J. Lane, J. S. Lange, P. Larin, A. Lavania, L. Lavezzi, T. T. Lei, Z. H. Lei, H. Leithoff, M. Lellmann, T. Lenz, C. Li, C. Li, C. H. Li, Cheng Li, D. M. Li, F. Li, G. Li, H. Li, H. B. Li, H. J. Li, H. N. Li, Hui Li, J. R. Li, J. S. Li, J. W. Li, Ke Li, L. J. Li, L. K. Li, Lei Li, M. H. Li, P. R. Li, S. X. Li, T. Li, W. D. Li, W. G. Li, X. H. Li, X. L. Li, Xiaoyu Li, Y. G. Li, Z. J. Li, Z. X. Li, Z. Y. Li, C. Liang, H. Liang, H. Liang, H. Liang, Y. F. Liang, Y. T. Liang, G. R. Liao, L. Z. Liao, J. Libby, A. Limphirat, D. X. Lin, T. Lin, B. J. Liu, B. X. Liu, C. Liu, C. X. Liu, D. Liu, F. H. Liu, Fang Liu, Feng Liu, G. M. Liu, H. Liu, H. B. Liu, H. M. Liu, Huanhuan Liu, Huihui Liu, J. B. Liu, J. L. Liu, J. Y. Liu, K. Liu, K. Y. Liu, Ke Liu, L. Liu, L. C. Liu, Lu Liu, M. H. Liu, P. L. Liu, Q. Liu, S. B. Liu, T. Liu, W. K. Liu, W. M. Liu, X. Liu, Y. Liu, Y. B. Liu, Z. A. Liu, Z. Q. Liu, X. C. Lou, F. X. Lu, H. J. Lu, J. G. Lu, X. L. Lu, Y. Lu, Y. P. Lu, Z. H. Lu, C. L. Luo, M. X. Luo, T. Luo, X. L. Luo, X. R. Lyu, Y. F. Lyu, F. C. Ma, H. L. Ma, J. L. Ma, L. L. Ma, M. M. Ma, Q. M. Ma, R. Q. Ma, R. T. Ma, X. Y. Ma, Y. Ma, F. E. Maas, M. Maggiora, S. Maldaner, S. Malde, A. Mangoni, Y. J. Mao, Z. P. Mao, S. Marcello, Z. X. Meng, J. G. Messchendorp, G. Mezzadri, H. Miao, T. J. Min, R. E. Mitchell, X. H. Mo, N. Yu. Muchnoi, Y. Nefedov, F. Nerling, I. B. Nikolaev, Z. Ning, S. Nisar, Y. Niu, S. L. Olsen, Q. Ouyang, S. Pacetti, X. Pan, Y. Pan, A. Pathak, Y. P. Pei, M. Pelizaeus, H. P. Peng, K. Peters, J. L. Ping, R. G. Ping, S. Plura, S. Pogodin, V. Prasad, F. Z. Qi, H. Qi, H. R. Qi, M. Qi, T. Y. Qi, S. Qian, W. B. Qian, C. F. Qiao, J. J. Qin, L. Q. Qin, X. P. Qin, X. S. Qin, Z. H. Qin, J. F. Qiu, S. Q. Qu, C. F. Redmer, K. J. Ren, A. Rivetti, V. Rodin, M. Rolo, G. Rong, Ch. Rosner, S. N. Ruan, N. Salone, A. Sarantsev, Y. Schelhaas, K. Schoenning, M. Scodeggio, K. Y. Shan, W. Shan, X. Y. Shan, J. F. Shangguan, L. G. Shao, M. Shao, C. P. Shen, H. F. Shen, W. H. Shen, X. Y. Shen, B. A. Shi, H. C. Shi, J. L. Shi, J. Y. Shi, Q. Q. Shi, R. S. Shi, X. Shi, J. J. Song, T. Z. Song, W. M. Song, Y. J. Song, Y. X. Song, S. Sosio, S. Spataro, F. Stieler, Y. J. Su, G. B. Sun, G. X. Sun, H. Sun, H. K. Sun, J. F. Sun, K. Sun, L. Sun, S. S. Sun, T. Sun, W. Y. Sun, Y. Sun, Y. J. Sun, Y. Z. Sun, Z. T. Sun, Y. X. Tan, C. J. Tang, G. Y. Tang, J. Tang, Y. A. Tang, L. Y. Tao, Q. T. Tao, M. Tat, J. X. Teng, V. Thoren, W. H. Tian, W. H. Tian, Y. Tian, Z. F. Tian, I. Uman, B. Wang, B. L. Wang, Bo Wang, C. W. Wang, D. Y. Wang, F. Wang, H. J. Wang, H. P. Wang, K. Wang, L. L. Wang, M. Wang, Meng Wang, S. Wang, S. Wang, T. Wang, T. J. Wang, W. Wang, W. Wang, W. H. Wang, W. P. Wang, X. Wang, X. F. Wang, X. J. Wang, X. L. Wang, Y. Wang, Y. D. Wang, Y. F. Wang, Y. H. Wang, Y. N. Wang, Y. Q. Wang, Yaqian Wang, Yi Wang, Z. Wang, Z. L. Wang, Z. Y. Wang, Ziyi Wang, D. Wei, D. H. Wei, F. Weidner, S. P. Wen, C. W. Wenzel, U. Wiedner, G. Wilkinson, M. Wolke, L. Wollenberg, C. Wu, J. F. Wu, L. H. Wu, L. J. Wu, X. Wu, X. H. Wu, Y. Wu, Y. J. Wu, Z. Wu, L. Xia, X. M. Xian, T. Xiang, D. Xiao, G. Y. Xiao, H. Xiao, S. Y. Xiao, Y. L. Xiao, Z. J. Xiao, C. Xie, X. H. Xie, Y. Xie, Y. G. Xie, Y. H. Xie, Z. P. Xie, T. Y. Xing, C. F. Xu, C. J. Xu, G. F. Xu, H. Y. Xu, Q. J. Xu, W. L. Xu, X. P. Xu, Y. C. Xu, Z. P. Xu, F. Yan, L. Yan, W. B. Yan, W. C. Yan, X. Q. Yan, H. J. Yang, H. L. Yang, H. X. Yang, Tao Yang, Y. Yang, Y. F. Yang, Y. X. Yang, Yifan Yang, Z. W. Yang, M. Ye, M. H. Ye, J. H. Yin, Z. Y. You, B. X. Yu, C. X. Yu, G. Yu, T. Yu, X. D. Yu, C. Z. Yuan, L. Yuan, S. C. Yuan, X. Q. Yuan, Y. Yuan, Z. Y. Yuan, C. X. Yue, A. A. Zafar, F. R. Zeng, X. Zeng, Y. Zeng, Y. J. Zeng, X. Y. Zhai, Y. H. Zhan, A. Q. Zhang, B. L. Zhang, B. X. Zhang, D. H. Zhang, G. Y. Zhang, H. Zhang, H. H. Zhang, H. H. Zhang, H. Q. Zhang, H. Y. Zhang, J. J. Zhang, J. L. Zhang, J. Q. Zhang, J. W. Zhang, J. X. Zhang, J. Y. Zhang, J. Z. Zhang, Jiawei Zhang, L. M. Zhang, L. Q. Zhang, Lei Zhang, P. Zhang, Q. Y. Zhang, Shuihan Zhang, Shulei Zhang, X. D. Zhang, X. M. Zhang, X. Y. Zhang, X. Y. Zhang, Y. Zhang, Y. T. Zhang, Y. H. Zhang, Yan Zhang, Yao Zhang, Z. H. Zhang, Z. L. Zhang, Z. Y. Zhang, Z. Y. Zhang, G. Zhao, J. Zhao, J. Y. Zhao, J. Z. Zhao, Lei Zhao, Ling Zhao, M. G. Zhao, S. J. Zhao, Y. B. Zhao, Y. X. Zhao, Z. G. Zhao, A. Zhemchugov, B. Zheng, J. P. Zheng, W. J. Zheng, Y. H. Zheng, B. Zhong, X. Zhong, H. Zhou, L. P. Zhou, X. Zhou, X. K. Zhou, X. R. Zhou, X. Y. Zhou, Y. Z. Zhou, J. Zhu, K. Zhu, K. J. Zhu, L. Zhu, L. X. Zhu, S. H. Zhu, S. Q. Zhu, T. J. Zhu, W. J. Zhu, Y. C. Zhu, Z. A. Zhu, J. H. Zou, J. Zu

Summary: Using the BESIII detector, we have observed the χcJ→ω-ω decays for the first time, where J=0, 1, 2, with significances of 5.6σ, 6.4σ, and 18σ, respectively, in an e+e- collision data sample of (2.708±0.014)×10^8 ψ(3686) events. The branching fractions are determined to be B[χc0→ω-ω]=(3.51±0.54±0.29)×10^-5, B[χc1→ω-ω]=(1.49±0.23±0.10)×10^-5, and B[χc2→ω-ω]=(4.52±0.24±0.18)×10^-5, where the first and second uncertainties are statistical and systematic, respectively.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Light double-gluon hybrid states with the exotic quantum numbers JPC=1-+ and 3-+

Niu Su, Wei-Han Tan, Hua-Xing Chen, Wei Chen, Shi-Lin Zhu

Summary: The QCD sum rule method was used to study double-gluon hybrid states with quark-gluon contents q over bar qgg (q 1/4 u=d) and s over bar sgg. Twenty-eight double-gluon hybrid currents were constructed, with eleven of them found to be zero due to internal symmetries between the two gluon fields. The masses of nonvanishing currents with exotic quantum numbers JPC 1/4 1- thorn and 3- thorn were calculated to be Mjq over bar qgg;1- thorn i 1/4 4.35 thorn 0.26 and Mjs over bar sgg;3- thorn i 1/4 3.16 thorn 0.22-0.28 GeV. The decay behaviors of JPC 1/4 3- thorn states were studied, and their search in the xa1o1260 thorn =pco=00 channels in future particle experiments is proposed.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Toy model to understand the oscillatory behavior in timelike nucleon form factors

Ri-Qing Qian, Zhan-Wei Liu, Xu Cao, Xiang Liu

Summary: In order to understand the oscillatory behavior in the timelike electromagnetic form factors of nucleons, a toy model is proposed based on the Jost function of the NN over bar pair. By using the distorted-wave Born approximation and constructing a simple square-well potential to reflect the final-state interaction of N over bar N, the damped oscillatory phenomenon in the timelike electromagnetic form factors of nucleons is naturally represented. The study also reveals that the period of oscillation is approximately determined by the Yukawa interaction range 1/m pi. Other possible potentials are also discussed.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Light double-gluon hybrid states from QCD sum rules

Niu Su, Hua-Xing Chen, Wei Chen, Shi-Lin Zhu

Summary: We investigate the double-gluon hybrid states composed of quark-gluon contents q over bar qgg (q = u/d) and s over bar sgg. Twelve double-gluon hybrid currents with various quantum numbers are constructed, and five of them are found to be zero due to some internal symmetries. The remaining seven currents are used for QCD sum rule analyses. In particular, the masses of the double-gluon hybrid states with exotic quantum number JPC = 2+- are calculated to be Mlq over bar qgg;2+-) = 2.26+0.20 -0.25 GeV and Mls over bar sgg;2+-) = 2.38+0.19 -0.25 GeV. Their two-and three-meson decay patterns are also studied.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Double-charm and hidden-charm hexaquark states under the complex scaling method

Jian-Bo Cheng, Du-xin Zheng, Zi-Yang Lin, Shi-Lin Zhu

Summary: We investigate the double-charm and hidden-charm hexaquarks as molecular states using the one-boson-exchange potential model. We consider multichannel coupling and S-D wave mixing and use the complex scaling method to study quasibound states. We find a quasibound state in the double-charm system, but not in the hidden-charm system.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Physics, Particles & Fields

Phase shifts of the light pseudoscalar meson and heavy meson scattering in heavy meson chiral perturbation theory

Bo-Lin Huang, Zi-Yang Lin, Kan Chen, Shi-Lin Zhu

Summary: We calculate the complete T matrices of elastic light pseudoscalar meson and heavy meson scattering to the third order in heavy meson chiral perturbation theory. We determine the low-energy constants by fitting the phase shifts and scattering lengths from lattice QCD simulations simultaneously, and predict the phase shifts at the physical meson masses. The strong phase shifts in various channels suggest the presence of bound states or resonances, including the well-known exotic state D-s0*(2317).

EUROPEAN PHYSICAL JOURNAL C (2023)

添加到收藏夹

Article Astronomy & Astrophysics

Double thresholds distort the line shapes of the P??s?4338?0 resonance

Lu Meng, Bo Wang, Shi-Lin Zhu

Summary: The LHCb Collaboration has recently observed the first hidden-charm pentaquark with strangeness, P?,yso4338 thorn 0. The state is close to the Xi 0c over bar D0 and Xi thorn c D- thresholds, raising concerns about the bias of the Breit-Wigner parametrization and its coupling to these double thresholds. Through qualitative and formalism-based analyses, it is shown that the peak of P?,yso4338 thorn 0 could originate from either an o-; thorn thorn sheet pole above the Xi thorn c D- threshold or an o-; - thorn sheet pole below the Xi 0c over bar D0 threshold. The authors suggest a refined experimental analysis considering unitarity and analyticity.

PHYSICAL REVIEW D (2023)

添加到收藏夹

Article Physics, Particles & Fields

Zcs, Zc and Zb states under the complex scaling method

Jian-Bo Cheng, Bo-Lin Huang, Zi-Yang Lin, Shi-Lin Zhu

Summary: In this study, we investigated the Z(b), Z(c), and Z(cs) states using the chiral effective field theory framework and the S-wave single channel molecule picture. By solving the Schrodinger equation in momentum space with the complex scaling method, we found that the Z(b)(10610), Z(b)(10650), Z(c)(3900), and Z(c)(4020) states are resonances composed of different combinations of particles, while the Z(cs)(3985) and Z(cs)(4000) states may originate from the same channel. Additionally, we discovered two resonances in the S-wave D-s*(D) over bar* channel, corresponding to the Z(cs)(4123) and Z(cs)(4220) states that require experimental confirmation.

EUROPEAN PHYSICAL JOURNAL C (2023)

添加到收藏夹

Article Astronomy & Astrophysics

New type of doubly charmed molecular pentaquarks containing most strange quarks: Mass spectra, radiative decays, and magnetic moments

Fu -Lai Wang, Xiang Liu

Summary: This work predicts the mass spectra of doubly charmed molecular pentaquark candidates and identifies the most promising ones. The radiative decays and magnetic moments of these candidates are also investigated. The authors suggest that the LHCb Collaboration should focus on searching for these candidates in the coming years.

PHYSICAL REVIEW D (2023)

添加到收藏夹

暂无数据

© Peeref 2019-2024. All rights reserved.