Newly observed exotic doubly charmed meson $T^{+}_{cc}$

Agaev, S. S.; Azizi, K.; Sundu, H.

doi:10.48550/arxiv.2108.00188

Cited by 27 publications

(46 citation statements)

References 24 publications

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“…The static properties of this resonance have been well predicted by both assumptions as tetraquark or molecule [13][14][15] though some potential models of multiquark state fail to give the mass [16]. Since the observation of this T cc state, discussions of double-heavy four quark states in both molecular configuration [17][18][19][20][21][22][23][24][25][26][27][28][29] and tetraquark picture [30][31][32][33] are performed to explain the static and/or decay properties. However, T cc can be taken as an excellent example for the study of the production mechanism (rather than via decay or static properties) to gain insight on the hadronic structure, and to shed light on the confinement mechanism.…”

Section: • • •mentioning

confidence: 99%

Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure

Jin,

Li,

Liu

et al. 2021

Preprint

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We suggest to study the production mechanism and some details of the production properties to probe the structure of the DDπ resonance T + cc recently observed by the LHCb Collaboration.If the resonance is produced as a four-quark state, one can find the corresponding finger prints via measurements on some production properties that are the same as those of Ξ cc . On the other hand, if T + cc is produced as a hadron molecule, the measurement on the momentum correlation of DD * can be a smoking gun to make the judgement.

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Section: • • •mentioning

confidence: 99%

Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure

Jin,

Li,

Liu

et al. 2021

Preprint

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“…The discovery of the first doubly charmed tetraquark state will, undoubtedly, usher in a new era in the study of hadron spectroscopy and improve our understanding of the non-perturbative nature of the strong interaction. After the experimental discovery, some spectroscopic properties and decay channels of the T + cc state have been investigated within different theoretical models [16][17][18][19][20][21]. Note that the spectroscopic parameters and different decay modes of the scalar and pseudoscalar T cc states as well as the T bc and T bb states of different quantum numbers were already investigated in Refs.…”

Section: Introductionmentioning

confidence: 99%

Magnetic dipole moments of the $T_{cc}^+$ and $Z_V^{++}$ tetraquark states

Azizi,

Özdem

2021

Preprint

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Inspired by the observation of the doubly charmed state Tcc and following theoretical studies on its spectroscopic parameters, we investigate its magnetic dipole moment assigning to it the quantum numbers J P = 1 + in the framework of the light-cone QCD. We also calculate the magnetic dipole moment of the theoretically predicted singly charmed state, Z ++ V , with two units of electric charge and the quantum numbers J P = 1 − . The numerical results are obtained as µ T + cc = 0.66 +0.34 −0.23 µN and µ Z ++ V = 3.35 +0.89 −0.73 µN , respectively. These results may be checked via other phenomenological approaches. The obtained results may be useful in exact determinations of the natures of these states.

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“…Even before the experimental discovery of this doubly charmed tetraquark state, there was a debate concerning its fundamental aspects, such as its decay/formation mechanisms and underlying structure [3][4][5][6][7][8][9][10][11][12][13][14]. Its discovery obviously stimulated the appearance of more studies employing different theoretical approaches [15][16][17][18][19][20][21][22][23][24][25][26][27]. In particular, several works have investigated the implications of the T + cc structure (hadron molecule or compact tetraquark) for the observables.…”

Section: Introductionmentioning

confidence: 99%

Interactions of the doubly charmed state $T_{cc} ^+$ with a hadronic medium

Abreu,

Navarra,

Nielsen

et al. 2021

Preprint

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The recently observed doubly charmed state T + cc belongs to the family of the multiquark states called exotic hadrons. One of main goals of modern hadron physics is to determine the strucutre of these exotic hadrons. Nucleus-nucleus collisions at the LHC offer a possibility to achieve this goal. The yield of T + cc 's produced at the end of the quark-gluon plasma phase of nuclear collisions is related to the internal structure of the state. However this yield may be affected by the interactions in the hadron gas phase. We investigate the absorption and production processes of this new state in a hadronic medium, considering the reactions T + cc π, T + cc ρ → D ( * ) D ( * ) and the corresponding inverses reactions. We use effective field Lagrangians to account for the couplings between light and heavy mesons. The absorption cross sections are found to be larger than the production ones. We compare our results with the only existing estimate of these quantities, presented in a work of J. Hong, S. Cho, T. Song and S. H. Lee, in which the authors employed the quasi-free approximation. We find cross sections which are one order of magnitude smaller. The subject deserves further investigation.

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Newly observed exotic doubly charmed meson $T^{+}_{cc}$

Cited by 27 publications

References 24 publications

Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure

Colour and baryon number fluctuation of preconfinement system in production process and T_cc structure

Magnetic dipole moments of the $T_{cc}^+$ and $Z_V^{++}$ tetraquark states

Interactions of the doubly charmed state $T_{cc} ^+$ with a hadronic medium

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