检索结果-南通市图书馆

Analysis of the Y(4220)and Y(4390)as molecular states with QCD sum rules

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2017年第8期41卷 31-38页

作者： Zhi-Gang Wang Department of Physics North China Electric Power University Baoding 071003 China

In this article, we assign the Y（4390） and Y（4220） to be the vector molecular states D1（2420） and D＊ ＊0（2400）, respectively, and study their masses and pole residues in detail with the QCD sum rules. The... 详细信息

关键词： molecular states QCD sum rules

{Q}{^(('))s}molecular states in QCD Sum Rules

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2010年第12期54卷 1075-1090页

作者：张建荣黄明球 Department of Physics National University of Defense Technology

We systematically investigate the mass spectra of {Qs}{Q（＇）s} molecular states in the framework of QCD sum rules. The interpolating currents representing the molecular states are proposed. Technically, contributions of the operators up to dimension six are included in operator product expansion （OPE）. The masses for molecular states with various {Qs}{Q（＇）s} configurations are presented. The result 4.36 ± 0.08 Ge V for theDs＊ Ds0- ＊ molecular state is consistent with the mass 4350＋4.6 -5.1± 0.7 MeV of the newly observed X（4350）, which could support X（4350） interpreted as a D＊D＊so molecular state.

关键词： mass spectra molecular states QCD sum rules

QCD sum rule study of J^(P)=1^(±)exotic states with two heavy quarks in the molecular picture

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第6期48卷 31-37页

作者： T.M.Aliev S.Bilmis M.Savcı Department of Physics Middle East Technical UniversityAnkara06800Turkey TUBITAK ULAKBIM Ankara06510Turkey

In this study,the spectroscopic parameters of exotic molecular states composed of mesons containing two heavy quarks(scalar-axial and pseudoscalar-axial meson combinations)are investigated within the QCD sum *** findings reveal that molecular states containing charm quarks do not form bound states,whereas states with b-quarks can form exotic molecular *** observation has significant implications for understanding the structure of these exotic states.

关键词： QCD sum rules exotic mesons molecular states

Study on the possible molecular state composed of D^∗sD^¯s1 within the Bethe-Salpeter framework

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2020年第9期44卷 40-52页

作者： Hong-Wei Ke Xiao-Hai Liu Xue-Qian Li School of Science Tianjin UniversityTianjin 300072China School of Physics Nankai UniversityTianjin 300071China

Recently,a vector charmonium-like state Y(4626)was observed in the portal of D+sDs1(2536)−.This intrigues an active discussion on the structure of the resonance because it has obvious significance for gaining a better understanding on its hadronic structure that contains suitable inner ***,this observation concerns the general theoretical framework about possible structures of exotic *** the mass of Y(4626)is slightly above the production threshold of D+sDs1(2536)−,whereas it is below that of D^∗sD^¯s1(2536)with the same quark contents as that of D+sDs1(2536)−,it is natural to conjecture that Y(4626)is a molecular state of D^∗sD^¯s1(2536),as suggested in the *** or negating this allegation would shed light on the goal we are concerned *** calculate the mass spectrum of a system composed of a vector meson and an axial vector i.e.,D^∗sD^¯s1(2536)within the framework of the Bethe-Salpeter *** numerical results show that the dimensionless parameterλin the form factor,which is phenomenologically introduced to every vertex,is far beyond the reasonable range for inducing even a very small binding energyΔ*** implies that the D^∗sD^¯s1(2536)system cannot exist in the nature as a hadronic molecule in this ***,we may not be able to assume the resonance Y(4626)to be a bound state of D^∗sD^¯s1(2536),and instead,it could be attributed to something else,such as a tetraquark.

关键词： molecular states Bethe-Salpeter equation strong decay

Dynamical study of the possible molecular state X(3872) with the s-channel one gluon exchange interaction

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 2010年第8期34卷 1052-1056页

作者：王保凯邓卫真陈晓林 Department of Physics and State Key Laboratory of Nuclear Physics and Technology Peking University Department of Physics Peking University

The recently observed X（3872） resonance, which is difficult to assign a conventional cc charmonium state in the quark model, may be interpreted as a molecular state. Such a molecular state is a hidden flavor four quark state because of its charmonium-like quantum numbers. The s-channel one gluon exchange is an interaction which only acts in the hidden flavor multi-quark system. In this paper, we will study the X（3872） and other similiar hidden flavor molecular states in a quark model by taking into account the s-channel one gluon exchange interaction.

关键词： quark model mesons molecular states