检索结果-南通市图书馆

Perfect DD^(*) Molecular Prediction Matching the T_(cc) Observation at LHCb

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2021年第9期38卷 30-32页

作者： Ning Li Zhi-Feng Sun Xiang Liu shi-lin zhu School of Physics Sun Yat-Sen UniversityGuangzhou 510275China School of Physical Science and Technology Lanzhou UniversityLanzhou 730000China Research Center for Hadron and CSR Physics Lanzhou University and Institute of Modern Physics of CASLanzhou 730000China Lanzhou Center for Theoretical Physics Lanzhou UniversityLanzhou 730000China School of Physics and Center of High Energy Physics Peking UniversityBeijing 100871China

In 2012,we investigated the possible molecular states composed of two charmed mesons[***.D 88(2013)114008;2012 arXiv:1211.5007[hep-ph]].The D^(*)D𝐷system with the quantum numbers of I(J^(P))=0(1^(+))was found to be a good candidate of the loosely bound molecular *** state is very close to theD*D threshold with a binding energy around 0.47 *** prediction was confirmed by the new LHCb observation of𝑇T^(+)_(cc)[see Franz Muheim’s talk at the European Physical Society conference on high energy physics 2021].

关键词： state. Perfect meson

QCD Axial Anomaly Enhances theηη'Decay of the Hybrid Candidateη1(1855)

在线全文

学校读者我要写书评

暂无评论

Chinese Physics Letters 2022年第5期39卷 29-35页

作者： Hua-Xing Chen Niu Su shi-lin zhu School of Physics Southeast UniversityNanjing 210094China School of Physics and Center of High Energy Physics Peking UniversityBeijing 100871China

We study the hybrid mesons with the exotic quantum number I^(G)J^(PG)=0+1-+and investigate their decays into theηη’,a1(1260)π,f1(1285)η,f1(1420)η,K*(892)■,K1(1270)■,and K1(1400)■*** is found that the QCD axial anomaly enhances the decay width of theηη’channel although this mode is strongly suppressed by the small p-wave phase *** results support the interpretation of theη1(1855)recently observed by BESⅢas the ssg hybrid meson of I^(G)J^(PC)=0^(+)1^(-+).The QCD axial anomaly ensures theηη’decay mode to be a characteristic signal of the hybrid nature of theη1(1855).

关键词： BESⅢ QCD mode

Doubly heavy tetraquarks in an extended chromomagnetic model

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2022年第1期46卷 43-66页

作者： Xin-Zhen Weng Wei-Zhen Deng shi-lin zhu Center of High Energy Physics Peking UniversityBeijing 100871China School of Physics and Astronomy Tel Aviv UniversityTel Aviv 69978Israel School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China

Using an extended chromomagnetic model,we perform a systematic study of the masses of doubly heavy *** find that the ground states of the doubly heavy tetraquarks are dominated by the color-triplet ■configuration,which is opposite to that of fully heavy *** combined results suggest that the color-triplet configuration becomes more important when the mass difference between the quarks and antiquarks *** find three stable states that lie below the thresholds of two pseudoscalar *** are the I^(P)=01^(+)nnbb tetraquark,I^(P)=1^(+)nncb tetraquark,and J^(P)=1^(+)nsbb tetraquark.

关键词： extended chromomagnetic model doubly heavy tetraquarks mass spectrum

New insight into the exotic states strongly coupled with the DD^(*)from the T_(cc)^(+)

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第19期69卷 3036-3041页

作者： Guang-Juan Wang Zhi Yang Jia-Jun Wu Makoto Oka shi-lin zhu KEK Theory Center Institute of Particle and Nuclear Studies(IPNS)High Energy Accelerator Research Organization(KEK)Tsukuba 305-0801Japan School of Physics University of Electronic Science and Technology of ChinaChengdu 610054China School of Physical Sciences University of Chinese Academy of Sciences(UCAS)Beijing 100049China Southern Center for Nuclear-Science Theory(SCNT) Institute of Modern PhysicsChinese Academy of SciencesHuizhou 516000China Advanced Science Research Center Japan Atomic Energy AgencyTokai 319-1195Japan Nishina Center for Accelerator-Based Science RIKENWako 351-0198Japan School of Physics and Center of High Energy Physics Peking UniversityBeijing 100871China

We have investigated the internal structure of the open-and hidden-charmed(DD^(*)/DD^(*))molecules in the unified *** first fit the experimental lineshape of the Tt state and extract the DD^(*)interaction,from which the T is assumed to arise *** we obtain the DD^(*)interaction by charge *** results show that the DD*interaction is attractive but insufficient to form X(3872)as a bound ***,its formation requires the crucial involvement of the coupled channel effect between the DD^(*)and cc components,although the cc accounts for approximately 1%*** X(3872),we have obtained a higher-energy state around 3957.9 MeV with a width of 16.7 MeV,which may be a potential candidate for the X(3940).In J^(PC)=1^(+-)sector,we have found two states related to the iso-scalar X(3872)and h_(c)(2P),*** combined study provides valuable insights into the nature of these DD^(+)/DD^(+)exotic states.

关键词： Quark model Charmonium(-like)states Coupled-channel effect Exotic hadrons

A possible explanation of the threshold enhancement in the process e^+e^-→∧■

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics C 2019年第11期43卷 49-57页

作者： Li-Ye Xiao Xin-Zhen Weng Xian-Hui Zhong shi-lin zhu School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Center of High Energy Physics Peking UniversityBeijing 100871China Department of Physics Hunan Normal Universityand Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of EducationChangsha 410081China Synergetic Innovation Center for Quantum Effects and Applications(SICQEA) Hunan Normal UniversityChangsha 410081China Collaborative Innovation Center of Quantum Matter Beijing 100871China

Inspired by the recent measurement of the process e+e-→∧■,we calculate the mass spectrum of the 0 meson with the GI *** the excited vector strangeonium states ?（3 S,4 S,5 S,6 S） and ?（2 D,3 D,4 D,5 D）,we investigate the electronic decay width with the Van Royen-Weisskopf formula,and the partial widths of the ∧■,■,and■ decay modes with the extended quark-pair creation *** find that the electronic decay width of the D-wave vector strangeonium is about 3～8 times larger than of the S-wave vector *** 2232 Me V,the partial decay width of the ∧■ mode can be up to several MeV for ?（33 S1）,while the partial ∧■ decay width of ?（23 D1） is O(10-3) *** the threshold enhancement reported by the BESIII collaboration arises from the strangeonium meson,this state is very likely the ?（33 S1） *** also note that the ∧■ and∑+■partial decay widths of the states ?（33 D1） and ?（43 S1） are several MeV,which is sufficient to be observed in future experiments.

关键词： spectrum GI mode ΛΛ^-decay

Genome and population evolution and environmental adaptation of Glyptosternon maculatum on the Qinghai-Tibet Plateau

在线全文

学校读者我要写书评

暂无评论

Zoological Research 2021年第4期42卷 502-513页

作者： shi-Jun Xiao Zen-Bo Mou Rui-Bin Yang Ding-Ding Fan Jia-Qi Liu Yu Zou shi-lin zhu Ming Zou Chao-Wei Zhou Hai-Ping Liu Institute of Fisheries Science Tibet Academy of Agricultural and Animal Husbandry SciencesLhasaTibet 810000China Department of Computer Science Wuhan University of TechnologyWuhanHubei 430070China College of Fisheries Huazhong Agricultural UniversityWuhanHubei 430070China Key Laboratory of Freshwater Fish Reproduction and Development(Ministry of Education) College of FisheriesSouthwest UniversityChongqing 402400China College of Plant Protection Jilin Agriculture UniversityChangchunJilin 130118China Jiaxing Key Laboratory for New Germplasm Breeding of Economic Mycology JiaxingZhejiang 314000China

Persistent uplift means the Qinghai-Tibet Plateau(QTP)is an ideal natural laboratory to investigate genome evolution and adaptation within highland ***,how paleogeographic and paleoclimatic events influence the genome and population of endemic fish species remains *** maculatum is an ancient endemic fish found on the QTP and the only critically endangered species in the Sisoridae ***,we found that major transposons in the *** genome showed episodic bursts,consistent with contemporaneous geological and climatic events during the QTP ***,histone genes showed significant expansion in the *** genome,which may be mediated by long interspersed nuclear elements(linE)repetitive element *** analysis showed that ancestral *** populations experienced two significant depressions 2.6 million years ago(Mya)and 10000 years ago,exhibiting excellent synchronization with Quaternary glaciation and the Younger Dryas,***,we propose that paleogeography and paleoclimate were dominating driving forces for population dynamics in endemic fish on the *** movements and temperature fluctuation likely destroyed the habitat and disrupted the drainage connectivity among *** factors may have caused severe bottlenecks and limited migration among ancestral *** populations,resulting in the low genetic diversity and endangered status of the species today.

关键词： Qinghai-Tibet Plateau(QTP) Glyptosternon maculatum Genome evolution Population High-altitude adaptation

Decoding the double heavy tetraquark state Tcc+

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2022年第15期67卷 1522-1525页

作者： Cheng-Rong Deng shi-lin zhu School of Physical Science and Technology Southwest UniversityChongqing 400715China School of Physics and Center of High Energy Physics Peking UniversityBeijing 100871China

Recently,the LHCb Collaboration reported the doubly charmed state T^(+)with IJ^(P)=01^(+)in the D^(0)^(0)π^(+) invariant mass spectrum[1].Its extremely small binding energy and width can match very well with the pred... 详细信息

关键词： invariant 四夸克态 state

Revisiting hidden-charm pentaquarks from QCD sum rules

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2019年第3期43卷 72-81页

作者： Jia-Bing Xiang Hua-Xing Chen Wei Chen Xiao-Bo Li Xing-Qun Yao shi-lin zhu School of Physics and Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beihang UniversityBeijing 100191China School of Physics Sun Yat-Sen UniversityGuangzhou 510275China School of Physics and State Key Laboratory of Nuclear Physics and Technology Peking UniversityBeijing 100871China Collaborative Innovation Center of Quantum Matter Beijing 100871China Center of High Energy Physics Peking UniversityBeijing 100871China

We revisit hidden-charm pentaquark states P_c(4380) and P_c(4450) using the method of QCD sum rules by requiring the pole contribution to be greater than or equal to 30% in order to better that the one-pole parametrization is valid. We find two mixing currents, and our results suggest that P_c(4380) and P_c(4450) can be identified as hiddencharm pentaquark states having J^P= 3/2^-and 5/2^+, respectively. However, there still exist other possible spin-parity assignments, such as J^P = 3/2^+ and J^P = 5/2^-, which must be clarified in further theoretical and experimental studies.

关键词： exotic hadrons pentaquark states QCD sum rules

Implications of the Z_(cs)(3985) and Z_(cs)(4000) as two different states

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2021年第20期66卷 2065-2071,M0003页

作者： Lu Meng Bo Wang Guang-Juan Wang shi-lin zhu Institut für Theoretische Physik II Ruhr-Universität BochumD-44780 BochumGermany School of Physical Science and Technology Hebei UniversityBaoding 071002China Advanced Science Research Center Japan Atomic Energy AgencyTokaiIbaraki 319-1195Japan School of Physics and Center of High Energy Physics Peking UniversityBeijing 100871China

Recently,the hidden charm tetraquark states Z_(cs)(3985)and Z_(cs)(4000)with strangeness were observed by the BESⅢ and LHCb collaborations,respectively,which are great breakthroughs for exploring exotic quantum chromodynamics(QCD)*** first and foremost question is whether they are the same *** this work,we explore the implications of the narrower state Z_(cs)(3985)in BESⅢ and the wider one Z_(cs)(4000)in LHCb as two different *** a solvable nonrelativistic effective field theory,we include the possible violations of heavy quark spin symmetry and SU(3)flavor symmetry in a comprehensive *** Z_(cs)(3985)and Z_(cs)(4000)are two different states,our results show that Z_(cs)(4000)/Z_(cs)(3985)is the pure(|D_(s)^(*)D>+/-|D_(s)D^(*)>)/√2 state,and the SU(3)flavor partner of Zc(3900)is Z_(cs)(4000)rather than the Z_(cs)(3985).Another two important consequences are the existence of a tensor D_(s)^(*)D^(*) resonance with mass about 4126 MeV and width 13 MeV,and the suppression of the decay mode Z_(cs)(3985)J/ψ*** two consequences can be tested in experiments and distinguish the two-state interpretation from the one-state scheme.

关键词： Tetraquark Strangness Heavy quark spin symmetry Zcs states