Multistrange Meson-Baryon Dynamics and Resonance Generation

Khemchandani, Kanchan; Torres, A. Martínez; Nagahiro, Hideko; Navarra, F. S.; Nielsen, M.

doi:10.1007/s00601-018-1338-2

Cited by 1 publication

(7 citation statements)

References 29 publications

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“…[14]. The t-channel amplitudes obtained in our work, in the limit of nonrelativistic approximation, are in agreement with those in Ref.…”

Section: Formalism and Resultssupporting

confidence: 92%

“…As discussed in Ref. [14], this peak corresponds to a pole in the complex plane at M − iΓ/2 = 1687 − i2 MeV. This result is in good agreement with the values M = 1684.7 ± 1.3…”

Section: Pos(hadron2017)056supporting

confidence: 80%

“…[14]. As we will show, we find that the coupled channel mesonbaryon interaction generates two resonances; both with isospin 1/2, one with spin 1/2 and other with spin 3/2.…”

Section: Introductionmentioning

confidence: 93%

“…[14]. We show the squared amplitude obtained by solving coupled channel equations for theK * Σ channel, as an example, in different isospin-spin configurations in Fig.…”

Section: Pos(hadron2017)056mentioning

confidence: 99%

“…The couplings of the isospin, spin 1/2 state given in Ref. [14] (which we list in Table. 1, for the reader's convenience) for at least the different channels open for decay, also successfully explain this finding. As can be seen from Table. 1, the coupling for the πΞ channel is nearly zero.…”

Section: Pos(hadron2017)056mentioning

confidence: 99%

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Understanding the properties of $\Xi(1690)$ and $\Xi(2120)$

Khemchandani¹,

Nagahiro²,

Navarra³

et al. 2018

Proceedings of XVII International Conference on Hadron Spectroscopy and Structure — PoS(Hadron2017)

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In this manuscript we discuss the results of our recent study on Ξ resonances. We have studied meson-baryon interaction with strangeness −2 by solving scattering equations in a coupled channel approach and found that the dynamics gives rise to the development of two poles in the complex plane close to the real axis. The corresponding narrow states have isospin half and spin half in one case and spin 3/2 in the other case. We find that the properties of the isospin and spin 1/2 state are strikingly similar to Ξ(1690), while the state with spin 3/2 can be related to Ξ(2120). We find that our results on Ξ(1690) are in good agreement with the data available from the BELLE and BABAR Collaborations. Our formalism consists of treating pseudoscalar-baryon and vector-baryon channels on an equal footing. Since the thresholds of such channels are distributed over a relatively larger energy range, we obtain all interaction kernels needed to solve the Bethe-Salpeter equation without resorting to any nonrelativistic approximation even though the amplitudes are calculated at low energies.

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“…[14]. The t-channel amplitudes obtained in our work, in the limit of nonrelativistic approximation, are in agreement with those in Ref.…”

Section: Formalism and Resultssupporting

confidence: 92%

“…As discussed in Ref. [14], this peak corresponds to a pole in the complex plane at M − iΓ/2 = 1687 − i2 MeV. This result is in good agreement with the values M = 1684.7 ± 1.3…”

Section: Pos(hadron2017)056supporting

confidence: 80%

“…[14]. As we will show, we find that the coupled channel mesonbaryon interaction generates two resonances; both with isospin 1/2, one with spin 1/2 and other with spin 3/2.…”

Section: Introductionmentioning

confidence: 93%

“…[14]. We show the squared amplitude obtained by solving coupled channel equations for theK * Σ channel, as an example, in different isospin-spin configurations in Fig.…”

Section: Pos(hadron2017)056mentioning

confidence: 99%

Section: Pos(hadron2017)056mentioning

confidence: 99%

See 3 more Smart Citations