Revisiting the tensor<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:msup><mml:mi>J</mml:mi><mml:mrow><mml:mi>P</mml:mi><mml:mi>C</mml:mi></mml:mrow></mml:msup><mml:mo>=</mml:mo><mml:msup><mml:mn>2</mml:mn><mml:mrow><mml:mo>−</mml:mo><mml:mo>−</mml:mo></mml:mrow></mml:msup></mml:math>meson spectrum

Abreu, L. M.; Júnior, F. M. da Costa; Favero, A. G.

doi:10.1103/physrevd.101.116016

Cited by 9 publications

(8 citation statements)

References 34 publications

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“…Our result for the ground state mass of φ 2 resonance is consistent with the prediction in Ref. [43] which finds the mass as m φ 2 = 1850 MeV employing the Coulomb gauge Hamiltonian approach to QCD. It also agrees with the Ref.…”

Section: Numerical Analysissupporting

confidence: 91%

Axial-tensor Meson family at $$T\ne 0$$

Süngü¹,

Türkan²,

Sertbakan³

et al. 2020

Eur. Phys. J. C

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The mass and decay constants of $$\rho _2,~\omega _2$$ ρ 2 , ω 2 and a missing member in the $$ 2^{--} $$ 2 - - nonet along with their first excited states are analyzed by the Thermal QCD sum rules approach, including QCD condensates up to dimension five. Mass and decay constant values of these mesons are stable from $$T=0$$ T = 0 up to $$T \cong 120 ~\mathrm {MeV}$$ T ≅ 120 MeV . However, after this threshold point, our numerical analyses indicates that they begin to diminish with increasing temperature. When we compare the hadronic parameters with their vacuum values, masses of these mesons and their first excited states decrease between (1–13%) from the PDG data and (10–26%) for the decay constants. However they diminish in the interval of (9–26%) and (2–34%) respectively with regards to Regge Trajectory Model data. We expect our numerical results will be confirmed by future heavy-ion collision experiments.

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Section: Numerical Analysissupporting

confidence: 91%

Axial-tensor Meson family at $$T\ne 0$$

Süngü¹,

Türkan²,

Sertbakan³

et al. 2020

Eur. Phys. J. C

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“…The vacuum is represented as a coherent BCS ground state with quark and gluon Cooper pairs (condensates), and the hadrons interpreted as quasiparticle excitations. This approach has been successfully applied to the description of properties of some types of light and heavy mesons, glueballs, gluelumps, hybrids, and tetraquarks [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. These reports demonstrate that this model is efficient in retrieving the essential aspects of QCD with a minimal number of free parameters (current quark masses and dynamical constants) and yielding reasonable predictions.…”

Section: Introductionmentioning

confidence: 82%

“…Let us start by introducing the formalism to be used in the analysis of the B c -meson spectrum. It is a Coulomb gauge QCD-inspired model whose effective Hamiltonian is given by [32][33][34][35][36][37][38]41,42,46,47]…”

Section: The Modelmentioning

confidence: 99%

“…That being so, this paper intends to contribute to the discussion and characterization of the B c -meson spectrum by employing a different formalism with respect to the analyses mentioned in the previous paragraph. The framework to be utilized is also known as the Coulomb gauge QCD model [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. This formulation is based on the exact QCD Hamiltonian in the Coulomb gauge, which is replaced by an effective Hamiltonian where the original nonperturbative confining and hyperfine interactions can be rearranged into calculable effective potentials between color densities and currents.…”

Section: Introductionmentioning

confidence: 99%

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Bottom-charmed meson spectrum from a QCD approach based on the Tamm-Dancoff approximation

2020

Self Cite

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The bottom-charmed meson spectrum is studied via an effective version of the Coulomb gauge QCD Hamiltonian. The Tamm-Dancoff approximation is employed to estimate the energies of the low-lying and radial-excited B c states with quantum numbers J P ¼ 0 − ; 0 þ ; 1 − ; 1 þ ; 2 þ ; 2 −. In particular, we analyze the effects of incorporating an effective transverse hyperfine interaction and spin mixing. The Regge trajectories and hyperfine splitting of both Sand P-wave states are also examined. The numerical results are compared with available experimental data and the theoretical predictions of other models.

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“…That being so, the present study intends to contribute to the discussion and characterization of the B c meson spectrum, by employing a different formalism with respect to the preceding analyses mentioned in the previous paragraph. The framework to be utilized is also known as Coulomb gauge QCD model [30][31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47]. This formulation is based on the exact QCD Hamiltonian in the Coulomb gauge, which is replaced by an effective Hamiltonian where the original non-perturbative confining and hyperfine interactions can be rearranged into calculable effective potentials between color densities as well as currents.…”

Section: Introductionmentioning

confidence: 99%

The bottom-charmed meson spectrum from a QCD approach based on Tamm--Dancoff approximation

Abreu,

Júnior,

Favero

2020

Preprint

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The bottom-charmed meson spectrum is studied in this work via an effective version of the Coulomb gauge QCD Hamiltonian. The Tamm-Dancoff approximation is employed to estimate the energies of the low-lying and radial-excited B c states with quantum numbers J P = 0 − , 0 + , 1 − , 1 + , 2 + , 2 − . In particular, we analyze the effects of incorporating an effective transverse hyperfine interaction and spin mixing. The Regge trajectories and hyperfine splitting of both Sand P -wave states are also examined. The numerical results are compared with available experimental data and theoretical predictions of other models.

show abstract

Revisiting the tensorJPC=2−−meson spectrum

Cited by 9 publications

References 34 publications

Axial-tensor Meson family at $$T\ne 0$$

Axial-tensor Meson family at $$T\ne 0$$

Bottom-charmed meson spectrum from a QCD approach based on the Tamm-Dancoff approximation

The bottom-charmed meson spectrum from a QCD approach based on Tamm--Dancoff approximation

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