Related references
Note: Only part of the references are listed.
Article
Physics, Particles & Fields
S. S. Agaev et al.
Summary: In this work, the newly observed doubly charmed four-quark state T-cc(+) is treated as an axial-vector tetraquark and its spectroscopic parameters and width are calculated. Various methods, including the QCD two-point sum rule method and QCD three-point sum rule method, are used to determine the mass, current coupling, and width of the tetraquark T-cc(+).
Article
Astronomy & Astrophysics
Xi-Zhe Ling et al.
Summary: Inspired by the recent discovery of a doubly charmed tetraquark state T-cc(+) by the LHCb Collaboration, this study investigates the decay width of T-cc(+) using the effective Lagrangian approach and assumes it to be an isoscalar DD* molecule. The results show that both T-cc -> DD pi and T-cc -> DD gamma contribute to the decay width, with the former being dominant.
Article
Physics, Particles & Fields
Huimin Ren et al.
Summary: Motivated by the discovery of a new tetraquark T-cc(+) with two charm quarks and two light antiquarks, this study investigates the DD* hadronic molecule interpretation of T-cc(+) and predicts possible beauty partners T-bb(10598) in future experiments.
ADVANCES IN HIGH ENERGY PHYSICS
(2022)
Article
Physics, Nuclear
Jian-Bo Cheng et al.
Summary: In this study, the masses of QQ (q) over bar(q) over bar tetraquark states are calculated using the HDAS and CMI model. The results indicate that double-charm tetraquarks are unstable, while stable double-bottom tetraquarks have specific mass ranges.
Article
Physics, Multidisciplinary
Ning Li et al.
Summary: 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.
CHINESE PHYSICS LETTERS
(2021)
Article
Physics, Particles & Fields
Alexander Khodjamirian et al.
Summary: In this study, we revisit the calculation of the strong couplings D*D pi and B*B pi using QCD light-cone sum rules with the pion light-cone distribution amplitudes. The accuracy of the correlation function is improved by taking into account gluon radiative corrections to the twist-3 terms, and the double spectral density of the correlation function is presented in an analytical form for the first time. Predictions for g(D*D pi) = 14.1(-1.2)(+1.3) and g(B*B pi) = 30.0(-2.4)(+2.6) are made when using decay constants of heavy mesons from lattice QCD results, and comparisons are made with experimental values and lattice QCD calculations.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Nuclear
Qin Qin et al.
Summary: This study investigates the discovery potential of double-charm tetraquarks T4.6.4.6.1, finding that their production cross sections at LHCb could lead to their discovery in the near future. The research also discusses the production and decays of these particles at future Tera-Z factories.
Article
Physics, Multidisciplinary
Xiang-Kun Dong et al.
Summary: In this study, the spectrum of hadronic molecules composed of heavy-antiheavy charmed hadrons was examined, with experimental candidates such as X(3872) and Y(4260) fitting well. The success in describing heavy-antiheavy hadronic molecules led to predictions for heavy-heavy cases, highlighting the potential existence of DD* and D-(*)Sigma((*))(c) molecules. Recent experimental findings support the existence of heavy-heavy hadronic molecules, providing opportunities for further observation in upcoming LHCb and other experiments.
COMMUNICATIONS IN THEORETICAL PHYSICS
(2021)
Article
Astronomy & Astrophysics
C. Le Roux et al.
Summary: The study investigates the dissociation of K* meson in heavy ion collisions during the hadron gas phase. By calculating production and absorption cross sections of K* and K mesons in a hadron gas, the time evolution of K* abundance and K*/K ratio during the hadron gas phase is computed. The obtained function of K*/K as a function of (dN/d eta(eta=0)) shows excellent agreement with recent experimental data, assuming a Bjorken type cooling and using an empirical relation between freeze-out temperature and central multiplicity density.
Article
Physics, Particles & Fields
Anton Andronic et al.
Summary: This study presents a quantitative description of hadron production in relativistic nuclear collisions using the Statistical Hadronization Model (SHM), focusing on hadrons containing light and charm quarks. The model successfully incorporates charm quarks as 'impurities' and can accurately predict the multiplicity of single charm hadrons in lead-lead collisions at LHC energies. Additionally, the model is extended to lighter collision systems and includes doubly- and triply-charmed hadrons, showing a characteristic enhancement hierarchy in the production probabilities of these states.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Yin Huang et al.
Summary: This study proposes the production of a new exotic charged structure T+cc using the central diffractive mechanism, with the total cross sections of the corresponding reaction evaluated based on chiral unitary theory. The results suggest that the cross section for the gamma p -> D+ T over bar -ccA+c reaction can be measured in proposed Electron-Ion Collider in China or experiments in the U.S., potentially verifying the nature of T+cc.
Article
Astronomy & Astrophysics
Yuanyuan Hu et al.
Summary: This paper demonstrates how heavy ion collisions can serve as a powerful platform for studying doubly charmed exotic hadrons, providing valuable insights into the dynamics of hadron structures in a charm-rich environment. The yields of T-cc(+) and its isospin partners in Pb-Pb collisions show significant enhancements compared to proton-proton collisions. The results on rapidity, transverse momentum dependence, and elliptic flow coefficient can be further tested by future experimental measurements.
Review
Astronomy & Astrophysics
Sean Fleming et al.
Summary: Researchers have discovered the tetraquark system T thorn cc, which may have a significant molecular component, and have calculated its decay process and differential spectrum in good agreement with experimental measurements. Furthermore, it is pointed out that the existence of shallow bound states of two pseudoscalar charm mesons can significantly enhance the width of T thorn cc if present.
Article
Astronomy & Astrophysics
Yi Jin et al.
Summary: This study suggests investigating the production mechanism and properties of the recently observed T-cc resonance to probe its structure. The similarity between T-cc and Xi(cc) can be determined by examining their production properties and kinematics spectra. Additionally, measuring the momentum correlation of DD* can help determine if T-cc is produced as a hadron molecule. The current cross-section calculations using a nonrelativistic hadron molecule model are significantly lower than experimental measurements.
Article
Astronomy & Astrophysics
K. Azizi et al.
Summary: This study investigates the magnetic dipole moments of the doubly charmed state T-cc and the theoretically predicted singly charmed state Z(v)(+)(+), providing numerical results for their values. The findings could be useful for further phenomenological verification and exact determination of the nature of these states.
Article
Astronomy & Astrophysics
Gang Yang et al.
Summary: The study systematically investigates hidden-charm tetraquarks with strangeness in the framework of a chiral quark model and considers different quark configurations and color wave functions. A variational method using complex-range Gaussian basis functions is used to solve the four-body bound state equation, showing that the states seem to be very unstable.
Article
Astronomy & Astrophysics
R. J. Hudspith et al.
Article
Physics, Nuclear
L. M. Abreu et al.
Article
Astronomy & Astrophysics
A. Andronic et al.
Article
Physics, Nuclear
L. M. Abreu et al.
Article
Astronomy & Astrophysics
A. Martinez Torres et al.
Article
Physics, Nuclear
Juhee Hong et al.
Article
Astronomy & Astrophysics
L. M. Abreu et al.
Article
Astronomy & Astrophysics
L. M. Abreu et al.
Article
Astronomy & Astrophysics
A. Martinez Torres et al.
Article
Physics, Nuclear
Sungtae Cho et al.
Article
Astronomy & Astrophysics
J. M. Dias et al.
Review
Physics, Nuclear
M. E. Bracco et al.
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2012)
Article
Physics, Nuclear
B. Osorio Rodrigues et al.
Article
Physics, Particles & Fields
Su Houng Lee et al.
EUROPEAN PHYSICAL JOURNAL C
(2009)
Article
Astronomy & Astrophysics
Youchang Yang et al.
Article
Astronomy & Astrophysics
M. E. Bracco et al.
Article
Astronomy & Astrophysics
D. Ebert et al.
Article
Astronomy & Astrophysics
J. Vijande et al.
Article
Physics, Nuclear
L. W. Chen et al.
Article
Astronomy & Astrophysics
Fernando S. Navarra et al.
Article
Physics, Nuclear
F Carvalho et al.
Article
Physics, Nuclear
J Vijande et al.
EUROPEAN PHYSICAL JOURNAL A
(2004)
Article
Astronomy & Astrophysics
BA Gelman et al.
Article
Astronomy & Astrophysics
FS Navarra et al.
Article
Physics, Nuclear
Y Oh et al.
Article
Astronomy & Astrophysics
FS Navarra et al.
