Radiative decays in charmonium beyond the p/m approximation

Bruschini, R.; González, P.

doi:10.48550/arxiv.1910.06773

Cited by 2 publications

(2 citation statements)

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“…allowing for a quite accurate spectral description of (conventional) charmonium once spindependent corrections are implemented [23]. It should be also remarked that the value of m c is very much constrained by the requirement of describing properly electromagnetic transitions [29].…”

Section: Jhep02(2023)216mentioning

confidence: 99%

χc1(2p): an overshadowed charmoniumlike resonance

Bruschini

González

2023

J. High Energ. Phys.

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A thorough study of the JPC = 1++ elastic $$ {D}^0{\overline{D}}^{\ast 0} $$ D 0 D ¯ ∗ 0 and D+D∗− scattering, where the form of the meson-meson interaction is inferred from lattice QCD calculations of string breaking, is carried out for center-of-mass energies up to 4 GeV. We show that the presence of χc1(3872), which can be naturally assigned to either a bound or virtual charmoniumlike state close below the $$ {D}^0{\overline{D}}^{\ast 0} $$ D 0 D ¯ ∗ 0 threshold, can overshadow a quasiconventional charmoniumlike resonance lying above threshold. This makes difficult the experimental detection of this resonance through the $$ {D}^0{\overline{D}}^{\ast 0} $$ D 0 D ¯ ∗ 0 and D+D∗− channels, despite being its expected main decay modes. We analyze alternative strong and electromagnetic decay modes. Comparison with existing data shows that this resonance may have already been observed through its decay to ωJ/ψ.

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Section: Jhep02(2023)216mentioning

confidence: 99%

χc1(2p): an overshadowed charmoniumlike resonance

Bruschini

González

2023

J. High Energ. Phys.

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“…For the case Q = c we shall deal with, standard phenomenological values of the parameters are [21] σ = 925.6 MeV/fm, χ = 102.6 MeV fm, m c = 1840 MeV, β = 855 MeV, allowing for a quite accurate spectral description of (conventional) charmonium once spin-dependent corrections are implemented [18]. It should be also remarked that the value of m c is very much constrained by the requirement of describing properly electromagnetic transitions [22].…”

Section: Diabatic Approach In Qcdmentioning

confidence: 99%