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Exploring hidden-charm and hidden-strange hexaquark states from lattice QCD

Science China(Physics,Mechanics & Astronomy) 2024年第1期67卷 30-37页

作者： Hang liu Jinchen He liuming liu Peng Sun Wei Wang Yi-Bo Yang Qi-An Zhang INPAC Key Laboratory for Particle Astrophysics and Cosmology(MOE)Shanghai Key Laboratory for Particle Physics and CosmologySchool of Physics and AstronomyShanghai Jiao Tong UniversityShanghai 200240China Maryland Center for Fundamental Physics Department of PhysicsUniversity of MarylandCollege ParkMaryland 20742USA Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Department of Physics and Institute of Theoretical Physics Nanjing Normal UniversityNanjing 210023China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China CAS Key Laboratory of Theoretical Physics Institute of Theoretical PhysicsChinese Academy of SciencesBeijing 100190China School of Fundamental Physics and Mathematical Sciences Hangzhou Institute for Advanced StudyUCASHangzhou 310024China International Centre for Theoretical Physics Asia-Pacific Beijing 100049/Hangzhou 310024China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China School of Physics Beihang UniversityBeijing 102206China

Based on five different ensembles of newly generated(2+1)-flavor configurations with pion mass of approximately mπ■(140-310)MeV,we present a lattice analysis of hidden-charm and hidden-strange hexaquarks with the quark content■.The correlation matrices of two types of operators with JPC=0++,0-+,1++and 1--are simulated to extract the masses of the hexaquark candidates,which are subsequently extrapolated to the physical pion mass and continuum *** results indicate that ground state masses are below the■threshold and provide a characteristic signal for the experimental discovery of hexaquark candidates,which may enrich the versatile structure of multiquarks;moreover,it is an indispensable step to decipher the nonperturbative nature of the fundamental interactions of quarks and gluons.

关键词： quantum chromodynamics lattice QCD multiquark states

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Southern Nuclear Science Computing Center

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IMP & HIRFL Annual Report 2019年第1期 31-32页

作者： liu liuming 不详

Southern Nuclear Science Computing Center(SNSC)is established to support the research on nuclear *** facility with peak performance 0.75 Petaops and 1Petabytes storage has started to run routinely in May *** computing... 详细信息

关键词： system routine Nuclear

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Hadron Spectroscopy from Lattice QCD

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IMP & HIRFL Annual Report 2018年第1期 21-22页

作者： liu liuming 不详

Quantum chromodynamics(QCD)is established as the fundamental theory of strong *** low energy regime,the coupling of strong interactions is large,non-perturbative methods are required to study the properties of strongly interacting *** QCD is the only method that can study strong interactions from first principles and provide reliable numerical results with controllable *** basic idea is to define QCD on a discretized Euclidean space and solve it numerically on supercomputers using Monte Carlo simulations,as illustrated in Fig.1(a).

关键词： QCD illustrated Euclidean

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A coupled-channel lattice study of the resonance-like structure

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Chinese Physics C 2019年第10期43卷 24-37页

作者： Ting Chen Ying Chen Ming Gong Chuan liu liuming liu Yu-Bin liu Zhaofeng liu Jian-Ping Ma Jian-Bo Zhang School of Physics Peking UniversityBeijing 100871China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China School of PhysicsUniversity of Chinese Academy of SciencesBeijing 100049China School of Physics and Center for High Energy Physics Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum MatterBeijing 100871China Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of SciencesBeijing 100049China School of Physics Nankai UniversityTianjin 300071China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics Universitat BonnD-53115 BonnGermany Department of Physics Zhejiang UniversityHangzhou 311027China

In this exploratory study, near-threshold scattering of D and ■ meson is investigated using lattice QCD with N f = 2 + 1 + 1 twisted mass fermion configurations. The calculation is performed in the coupled-channel Lüscher finite-size formalism. The study focuses on the channel with IG(JPC) = 1+(1+-) where the resonance-like structure Zc（3900） was discovered. We first identify the two most relevant channels and the lattice study is performed in the two-channel scattering model. Combined with the two-channel Ross-Shaw theory, scattering parameters are extracted from the energy levels by solving the generalized eigenvalue problem. Our results for the scattering length parameters suggest that for the particular lattice parameters that we studied, the best fit parameters do not correspond to the peak in the elastic scattering cross-section near the threshold. Furthermore, in the zero-range Ross-Shaw theory,the scenario of a narrow resonance close to the threshold is disfavored beyond the 3σ level.

关键词： Luescher formalism lattice QCD computation exotic mesons

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格点QCD 组态产生研究

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原子核物理评论 2021年第2期38卷 129-135页

作者：李哲刘柳明华南师范大学量子物质研究院广州510006 中国科学院近代物理研究所兰州730000

组态是格点QCD计算的基础,本文利用开源软件Chroma产生了一组格点QCD组态,格距为0.105 fm,体积为32^(3)×64,π介子质量为220 MeV,格点上的夸克作用量采用Wilson clover作用量。这组组态可用于格点QCD中研究核子结构和强子谱等物理问题。

关键词：格点QCD 强相互作用 chroma 格点QCD组态 π介子

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Electron-ion collider in China

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Frontiers of physics 2021年第6期16卷 1-78页

作者： Daniele PAnderle Valerio Bertone Xu Cao Lei Chang Ningbo Chang Gu Chen Xurong Chen Zhuojun Chen Zhufang Cui Lingyun Dai Weitian Deng Minghui Ding Xu Feng Chang Gong Longcheng Gui Feng-Kun Guo Chengdong Han Jun He Tie-Jiun Hou Hongxia Huang Yin Huang KrešImir KumeričKi LPKaptari Demin Li Hengne Li Minxiang Li Xueqian Li Yutie Liang Zuotang Liang Chen liu Chuan liu Guoming liu Jie liu liuming liu Xiang liu Tianbo liu Xiaofeng Luo Zhun Lyu Boqiang Ma Fu Ma Jianping Ma Yugang Ma Lijun Mao Cédric Mezrag HervéMoutarde Jialun Ping Sixue Qin Hang Ren Craig DRoberts Juan Rojo Guodong Shen Chao Shi Qintao Song Hao Sun PawełSznajder Enke Wang Fan Wang Qian Wang Rong Wang Ruiru Wang Taofeng Wang Wei Wang Xiaoyu Wang Xiaoyun Wang Jiajun Wu Xinggang Wu Lei Xia Bowen Xiao Guoqing Xiao Ju-Jun Xie Yaping Xie Hongxi Xing Hushan Xu Nu Xu Shusheng Xu Mengshi Yan Wenbiao Yan Wencheng Yan Xinhu Yan Jiancheng Yang Yi-Bo Yang Zhi Yang Deliang Yao Zhihong Ye Peilin Yin C-PYuan Wenlong Zhan Jianhui Zhang Jinlong Zhang Pengming Zhang Yifei Zhang Chao-Hsi Chang Zhenyu Zhang Hongwei Zhao Kuang-Ta Chao Qiang Zhao Yuxiang Zhao Zhengguo Zhao Liang Zheng Jian Zhou Xiang Zhou Xiaorong Zhou Bingsong Zou Liping Zou Guangdong Provincial Key Laboratory of Nuclear Science Institute of Quantum MatterSouth China Normal UniversityGuangzhou 510006China IRFU CEAUniversitéParis-SaclayF-91191 Gif-sur-YvetteFrance Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Nankai University Tianjin 300071China Xinyang Normal University Xinyang 464000China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006China Hunan University Changsha 410082China Nanjing University Nanjing 210093China Huazhong University of Science and Technology Wuhan 430074China European Centre for Theoretical Studies in Nuclear Physics and Related Areas(ECT*)and Fondazione Bruno Kessler Villa TambosiStrada delle Tabarelle 286I-38123 Villazzano(TN)Italy School of Physics Peking UniversityBeijing 100871China Hunan Normal University Changsha 410081China Institute of Theoretical Physics Chinese Academy of SciencesBeijing 100190China Nanjing Normal University Nanjing 210023China Department of Physics College of SciencesNortheastern UniversityShenyang 110819China Southwest Jiaotong University Chengdu 610000China Department of Physics Faculty of ScienceUniversity of ZagrebBijenička c.3210000 ZagrebCroatia Bogoliubov Laboratory of Theoretical Physics Joint Institute for Nuclear ResearchDubna 141980Russia School of Physics and Microelectronics Zhengzhou UniversityZhengzhou 450001China Lanzhou University Lanzhou 730000China Key Laboratory of Particle Physics and Particle Irradiation(MOE) Shandong UniversityQingdao 266237China Key Laboratory of Quark and Lepton Physics(MOE)and Institute of Particle Physics Central China Normal UniversityWuhan 430079China School of Physics Southeast UniversityNanjing 211189China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China Depa

Lepton scattering is an established ideal tool for studying inner structure of small particles such as nucleons as well as *** a future high energy nuclear physics project,an Electron-ion collider in China(EicC)has been *** will be constructed based on an upgraded heavy-ion accelerator,High Intensity heavy-ion Accelerator Facility(HIAF)which is currently under construction,together with a new electron *** proposed collider will provide highly polarized electrons(with a po-larization of 80%)and protons(with a polarization of 70%)with variable center of mass energies from 15 to 20 GeV and the luminosity of(2–3)×1033 cm^(−2)·s^(−1).Polarized deuterons and Helium-3,as well as unpolarized ion beams from Carbon to Uranium,will be also available at the *** main foci of the EicC will be precision measurements of the structure of the nucleon in the sea quark region,including 3D tomography of nucleon;the partonic structure of nuclei and the parton interaction with the nuclear environment;the exotic states,especially those with heavy flavor quark *** addition,issues fundamental to understanding the origin of mass could be addressed by measurements of heavy quarkonia near-threshold production at the *** order to achieve the above-mentioned physics goals,a hermetical detector system will be constructed with cutting-edge *** document is the result of collective contributions and valuable inputs from experts across the *** EicC physics program complements the ongoing scientific programs at the Jefferson Laboratory and the future EIC project in the United *** success of this project will also advance both nuclear and particle physics as well as accelerator and detector technology in China.

关键词： electron ion collider nucleon structure nucleon mass exotic hadronic states quantum chromodynamics 3D-tomography helicity transverse momentum dependent parton distribution generalized parton distribution energy recovery linac polarization spin rotator

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新生儿腹腔镜手术的初步经验—附33例报告

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新生儿科杂志 2004年第4期19卷 145-147页

作者：黄柳明李龙刘钢付京波北京大学第一医院小儿外科 100034

目的探讨新生儿腹腔镜手术的特点。方法分析33例新生儿腹腔镜手术的方法和围手术期情况,其中探察性手术14例,治疗性手术19例。6例手术中借助腹壁牵引线技术,3例胆道造影采用免气腹腹腔镜。结果无围手术期死亡及伤口感染,4例术后合并... 详细信息

目的探讨新生儿腹腔镜手术的特点。方法分析33例新生儿腹腔镜手术的方法和围手术期情况,其中探察性手术14例,治疗性手术19例。6例手术中借助腹壁牵引线技术,3例胆道造影采用免气腹腹腔镜。结果无围手术期死亡及伤口感染,4例术后合并呼吸道感染。探察性手术14例均在镜下明确诊断,治疗性手术19例无中转开腹,1例术中损伤幽门粘膜。结论新生儿期实施腹腔镜手术安全可行,良好的显露是手术成功的保证。

关键词：腹腔镜手术新生儿期治疗性围手术期诊断腹壁手术成功结论方法分析情况

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Apoptosis of colon cancer CT-26 cells induced polysaccharide from Cyclocarya paliurus and its phosphorylated derivative via intrinsic mitochondrial passway

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Food Science and Human Wellness 2023年第5期12卷 1545-1556页

作者： liuming Xie Mingyue Shen Rong Huang Xuan liu Yue Yu Hanyu Lu Jianhua Xie State Key Laboratory of Food Science and Technology Nanchang UniversityNanchang 330047China

In this study,the antitumor properties and the possible molecular mechanisms of Cyclocarya paliurus polysaccharide(CP)and its phosphorylated derivative(P-CP)on CT-26 mouse colon carcinoma cells were *** found that CP had high inhibition ratio against CT-26 *** flow cytometry results found that CP treatment could cause the intracellular acidification,arrest the cell cycle in the S phase and increase reactive oxygen species ***,CP treatment triggered mitochondrial membrane potential depolarization and Ca^(2+)overloading,and broke down the balance of antioxidant system,Na^(+)/K^(+)-ATPase and Ca^(2+)-*** analysis found CP induced cell apoptosis through improving the activities of caspase-3 and caspase-9,and increasing the level of cytochrome ***,the comparative study of antitumor effect on CT-26 cells displayed that the phosphorylation enhanced antitumor activities of *** results suggest CP is a potential natural therapeutic agent for colon cancer and phosphorylation represents an effective method of enhancing the antitumor activity of CP.

关键词： Cyclocarya paliurus polysaccharide Phosphorylated Colorectal cancer Mitochondrial apoptosis pathway

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Tunable magneto-Seebeck effect in Co_(2)FeSi/MgO/Co_(2)FeSi heterostructure via optimized interfacial engineering

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Science China(Physics,Mechanics & Astronomy) 2024年第3期67卷 128-135页

作者： Jingyu Li Xianbiao Shi Yurong Jin Le Ma liuming Wei Chi Zhang Hang Li Peng-Fei liu International Joint Research Laboratory of New Energy Materials and Devices of Henan Province School of Physics and ElectronicsHenan UniversityKaifeng 475004China Institute of High Energy Physics Chinese Academy of SciencesBeijing 100049China Spallation Neutron Source Science Center Dongguan 523803China Defence Industry Secrecy Examination and Certification Center Beijing 100089China School of Materials Science and Engineering Nanjing University of Science and TechnologyNanjing 210094China Department of Network Security Henan Police CollegeZhengzhou 450046China College of Electrical Engineering Henan University of TechnologyZhengzhou 450001China

Enhancing the tunneling magneto-Seebeck(TMS) ratio and uncovering its underlying mechanism are greatly demanded in spin *** magnitude and sign of the TMS effect depend on the type of atom and the stacking order of atoms at the ***,we demonstrate that TMS ratios can be effectively manipulated by altering heterogonous or homogeneous interface through decoration on the CoFeSi(001) surface inserted on the MgO insulating *** maximum TMS ratio of pure Co_(2)/O termination is 4565% at 800 ***,the TMS ratio of the FeSi/O termination has two peak values,of which the maximum could reach up to-3290% at 650 *** comparing two different atom arrangements at the interface,we reveal that the sign and symbol of the TMS ratio can be controlled by the temperature and different atomic configurations at the Co_(2)FeSi/MgO ***,the spin-Seebeck coefficient up to ~150 μV/K is also possible when we select suitable terminations and *** findings will provide useful insights into how to control the sign and symbol of the TMS ratio and accordingly stimulate the development field of magneto-thermoelectric power and spin caloritronic devices based on the magneto-Seebeck effect in Heusler-based metallic multilayers.

关键词： magneto-Seebeck effect interface spintronics electronic structure spin-Seebeck effect

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Simulated Annealing for Ground State Energy of Ionized Donor Bound Excitons in Semiconductors

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Communications in Theoretical Physics 2004年第5X期42卷 779-784页

作者： YANHai-Qing TANGChen liuming ZHANGHao ZHANGGui-Min DepartmentofAppliedPhysics UniversityofTianjinTianjin300072China

We present a global optimization method, called the simulated annealing, to the ground state energies of excitons. The proposed method does not require the partial derivatives with respect to each variational parameter or solving an eigenequation, so the present method is simpler in software programming than the variational method,and overcomes the major difficulties. The ground state energies of ionized-donor-bound excitons (D+, X) have been calculated variationally for all values of effective electron-to-hole mass ratio σ. They are compared with those obtained by the variational method. The results obtained demonstrate that the proposed method is simple, accurate, and has more advantages than the traditional methods in calculation.

关键词：基态能量束缚激子退火模拟氦原子

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