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Article overview
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Strong decays of the latest LHCb pentaquark candidates in hadronic molecule pictures | | Yong-Hui Lin
; Bing-Song Zou
; | | Date: |
14 Aug 2019 | | Abstract: | We investigate the observed pentaquark candidates $P_c(4312)$, $P_c(4440)$
and $P_c(4457)$ from the latest LHCb measurement, as well as four possible spin
partners in the $ar{D}^{(*)}Sigma_c^*$ system predicted from the heavy quark
spin symmetry with the hadronic molecule scenarios. Similar to the previous
calculation on $P_c(4380)$ and $P_c(4450)$, the partial widths of all the
allowed decay channels for these $P_c$ states are estimated with the effective
Lagrangian method. The cutoff dependence of our numerical results are also
presented. Comparing with the experimental widths, our results show that
$P_c(4312)$, $P_c(4440)$ and $P_c(4457)$ can be described well with the
spin-parity-$1/2^-$-$ar{D}Sigma_c$, $1/2^-$-$ar{D}^*Sigma_c$ and
$3/2^-$-$ar{D}^*Sigma_c$ molecule pictures, respectively. | | Source: | arXiv, 1908.5309 | | Services: | Forum | Review | PDF | Favorites | |
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