The strong decays of X(3940) and X(4160)

Wang, Zhihui; Zhang, Yi; Jiang, L.; Wang, Tianhong; Jiang, Yue; Wang, Guoli

doi:10.1140/epjc/s10052-017-4596-0

Cited by 301 publications

(420 citation statements)

References 50 publications

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“…Unfortunately, no other collaborations found such a state. Recently, the LHCb Collaboration observed another doubly charmed baryon state Ξ þþ cc with a mass of 3621.4 AE 0.78 MeV, which has inspired many theoretical studies on its weak [3][4][5], strong, and radiative decays [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Magnetic moments of the spin- 1/2 doubly charmed baryons in covariant baryon chiral perturbation theory

2018

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Inspired by the recent discovery of the Ξ þþ cc by the LHCb Collaboration, we study the magnetic moments of the spin-1=2 doubly charmed baryons up to the next-to-leading order in covariant baryon chiral perturbation theory with the extended-on-mass-shell renormalization scheme. There are three low energy constants at this order: a 1 , a 2 , and g a . The latest lattice QCD simulations allow us to fix a combination of a 1 and a 2 , while the axial-vector coupling g a can be determined in three different ways: by fitting to the lattice QCD data, by the quark model, or by the heavy antiquark diquark symmetry. The magnetic moments of the spin-1=2 doubly charmed baryons, Ξ d cc and Ξ s cc , can then be predicted. We compare our results with those obtained in the heavy baryon chiral perturbation theory and other approaches, and point out some inconsistencies between the lattice QCD simulations and the quark model.

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Section: Introductionmentioning

confidence: 99%

Magnetic moments of the spin- 1/2 doubly charmed baryons in covariant baryon chiral perturbation theory

2018

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“…To identify their quantum numbers and determine their decay properties, we calculate the Okubo-ZweigIizuka (OZI) allowed two-body decay channels of the two new resonances with an instantaneous BetheSalpeter approach, which has been applied successfully in other strong decay channels and proved to be a good method [15][16][17]. There should exist 2Pð1 þ Þ and 2Pð1 þ 0 Þ states theoretically, while only one candidate has yet been observed in D and D s families, respectively.…”

Section: Introductionmentioning

confidence: 99%

Strong decays of DJ(3000) and DsJ(3040)<

Wang

Jiang

et al. 2018

Phys. Rev. D

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In this paper, we systematically calculate two-body strong decays of newly observed D J ð3000Þ and D sJ ð3040Þ with 2Pð1 þ Þ and 2Pð1 þ0 Þ assignments in an instantaneous approximation of the Bethe-Salpeter equation method. Our results show that both resonances can be explained as the 2Pð1 þ 0 Þ with broad width . For D sJ ð3040Þ, the total width is 157.4 MeV in our calculation, close to the lower limit of experimental data, and the dominant channels are D Ã K and D Ã K Ã . These results are consistent with observed channels in experiments. Given the very little information that has been obtained from experiments and the large error bars of the total decay widths, we recommend the detection of dominant channels in our calculation.

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“…This approach cannot be applied to the channels containing a light vector meson. So, we also adopt the effective Lagrangian method [23].…”

Section: Introductionmentioning

confidence: 99%

Strong decays of the orbitally excited scalar $$D^{*}_{0}$$ D 0 ∗ mesons

et al. 2018

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We calculate the two-body strong decays of the orbitally excited scalar mesons D * 0 (2400) and D * J (3000) by using the relativistic Bethe-Salpeter (BS) method. D * J (3000) was observed recently by the LHCb Collaboration, the quantum number of which has not been determined yet. In this paper, we assume that it is the 0 + (2P) state and obtain the transition amplitude by using the PCAC relation, low-energy theorem and effective Lagrangian method. For the 1P state, the total widths of D * 0 (2400) 0 and D * 0 (2400) + are 226 and 246 MeV, respectively. With the assumption of 0 + (2P) state, the widths of D * J (3000) 0 and D * J (3000) + are both about 131 MeV, which is close to the present experimental data. Therefore, D * J (3000) is a strong candidate for the 2 3 P 0 state.

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The strong decays of X(3940) and X(4160)

Cited by 301 publications

References 50 publications

Magnetic moments of the spin- 1/2 doubly charmed baryons in covariant baryon chiral perturbation theory

Magnetic moments of the spin- 1/2 doubly charmed baryons in covariant baryon chiral perturbation theory

Strong decays of DJ(3000) and DsJ(3040)<

Strong decays of the orbitally excited scalar $$D^{*}_{0}$$ D 0 ∗ mesons

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