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 multiplet revisited: Hyperfine mass splitting and radiative transitions

Anwar, M.; Lu, Y. P.; Zou, B. S.

doi:10.1103/physrevd.99.094005

Cited by 13 publications

(17 citation statements)

References 39 publications

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“…involve the initial and final meson radial wave functions which we obtained numerically; for more details, see Refs. [52,53]. The angular matrix elements C AB are given by…”

Section: Radiative Transitions In the Qm And Uqm Formalismsmentioning

confidence: 99%

“…A wide range of theoretical descriptions of XY Z states is available. These interpretations include: (a) the compact tetraquark (or diquark-antidiquark) model [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27]; (b) the meson-meson molecular model [28][29][30][31][32][33][34][35][36][37][38][39]; (c) the interpretation in terms of kinematic or threshold effects caused by a e-mail: jacopo.j.ferretti@jyu.fi (corresponding author) b e-mail: santopinto@ge.infn.it c e-mail: m.anwar@fz-juelich.de (corresponding author) d e-mail: luyu@hiskp.uni-bonn.de virtual particles [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54]. Calculations of meson observables (like the spectrum or the decay widths) within the above pictures, when compared with t...…”

Section: Introductionmentioning

confidence: 99%

“…In a previous paper [54], we discussed a novel coupledchannel model approach to the spectroscopy and structure of heavy quarkonium-like mesons based on the Unquenched Quark Model (UQM) formalism [40,46,47,[50][51][52][53][55][56][57][58][59][60][61]. In the UQM, quarkonium-like exotics are interpreted as the superposition of a heavy quarkonium core plus meson-meson molecular-type components.…”

Section: Introductionmentioning

confidence: 99%

“…[54] to study the quark structure of the X (4274) and χ c (3P) states by calculating their masses with threshold corrections. We also compute their open-charm strong decay widths in the 3 P 0 pair-creation model [62][63][64][65][66][67][68][69][70][71][72] and their radiative transitions in the UQM [53] formalism. The X (4274) [also known as χ c1 (4274)] was discovered by LHCb in the amplitude analysis of B + → J/ψφ K + decays [73,74], even though a 3.1σ evidence for a relatively narrow J/ψφ mass peak near 4274 ± 8 MeV had been previously presented by CDF [75].…”

Section: Introductionmentioning

confidence: 99%

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Quark structure of the $$\chi _{\mathrm{c}}(3P)$$ and X(4274) resonances and their strong and radiative decays

et al. 2020

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We calculate the masses of χ c (3P) states with threshold corrections in a coupled-channel model. The model was recently applied to the description of the properties of χ c (2P) and χ b (3P) multiplets (Ferretti and Santopinto in Phys Lett B 789:550, 2019]. We also compute the open-charm strong decay widths of the χ c (3P) states and their radiative transitions. According to our predictions, the χ c (3P) states should be dominated by the charmonium core, but they may also show small meson-meson components. The X (4274) is interpreted as a cc χ c1 (3P) state. More information on the other members of the χ c (3P) multiplet, as well as a more rigorous analysis of the X (4274)'s decay modes, are needed to provide further indications on the quark structure of the previous resonance.

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“…involve the initial and final meson radial wave functions which we obtained numerically; for more details, see Refs. [52,53]. The angular matrix elements C AB are given by…”

Section: Radiative Transitions In the Qm And Uqm Formalismsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Quark structure of the $$\chi _{\mathrm{c}}(3P)$$ and X(4274) resonances and their strong and radiative decays

et al. 2020

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“…Finally, we obtain the barycenter mass 10,545 +24 −27 MeV for potential I and 10,549 +23 −41 MeV for potential II, both compatible with the previously quoted ATLAS and D0 estimations. Recalling that not all the individual states of the χ bJ (3P) system have been measured, we provide in Tables 6 (potential I) and 7 (potential II) the n = 1, 2, 3 barycenter masses, given by [75,76]…”

Section: χ B (3p) Statesmentioning

confidence: 99%

Bottomonium spectrum with a Dirac potential model in the momentum space

et al. 2020

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We study the bottomonium spectrum using a relativistic potential model in the momentum space. This model is based on a complete one gluon exchange interaction with a momentum dependent screening factor to account for the effects due to virtual pair creation that appear close to the decay thresholds. The overall model does not make use of nonrelativistic approximations. We fit well established bottomonium states below the open bottom threshold and predict the rest of the spectrum up to ≈ 11200 MeV and J PC = 3 −−. Uncertainties are treated rigorously and propagated in full to the parameters of the model using a Monte Carlo to identify if which deviations from experimental data can be absorbed into the statistical uncertainties of the models and which can be related to physics beyond the bb picture, guiding future research. We get a good description of the spectrum, in particular the Belle measurement of the η b (2S) state and the Υ (10860) and χ b (3P) resonances.

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Radiative transitions of χcJ → ψγ and χbj → Υγ

Pei,

Li,

Wang

et al. 2024

J. High Energ. Phys.

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In the framework of instantaneous Bethe-Salpeter equation, according to the JPC of quarkonia, we find that their wave functions all contain multiple partial waves, rather than pure waves. In the radiative electromagnetic transitions χcJ→γψ and χbJ→γΥ (J = 0, 1, 2), the main wave of quarkonium gives the non-relativistic contribution, while other waves provide the relativistic corrections. Our results indicate that the relativistic effect of charmonium, especially highly excited states, is significant. Such as the relativistic effects of χcJ(2P) → γψ(1S) (J = 0, 1, 2) are {49.7%, 30.9%, 37.5%}, much larger than the corresponding {17.8%, 7.08%, 12.9%} of χbJ(2P) → γΥ(1S). The decay of χcJ(2P) → γψ can be used to distinguish between χc0(3860) and χc0(3915), which particle is the charmonium χc0(2P). Although our result of χc1(3872)→γψ(2S) is consistent with data, but the one of χc1(3872)→γψ(1S) is much larger than data, so whether χc1(3872) is the conventional χc1(2P) remains an open question. The undiscovered Υ(1D) and Υ(2D) have large production rates in decays of χb0(2P) → γΥ(1D) and χbJ(3P) → γΥ(2D) (J = 0, 1), respectively. To search for χbJ(3P) (J = 0, 1, 2), the most competitive channels are the decays χbJ(3P) → γΥ(3S). And the best way to find χb2(1F) is to search for the decay of χb2(1F) → γΥ(1D).

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χb(3P) multiplet revisited: Hyperfine mass splitting and radiative transitions

Cited by 13 publications

References 39 publications

Quark structure of the $$\chi _{\mathrm{c}}(3P)$$ and X(4274) resonances and their strong and radiative decays

Quark structure of the $$\chi _{\mathrm{c}}(3P)$$ and X(4274) resonances and their strong and radiative decays

Bottomonium spectrum with a Dirac potential model in the momentum space

Radiative transitions of χcJ → ψγ and χbj → Υγ

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