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Volume 326 - The International Conference on B-Physics at Frontier Machines (BEAUTY2018) - Session: Posters
HIDDEN-CHARM AND BOTTOM PENTAQUARK STATES
E. Santopinto,* Y. Yamaguchi, A. Giachino, A. Hosaka, S. Takeuchi, M. Takizawa
*corresponding author
Full text: pdf
Pre-published on: 2018 September 07
Published on: 2018 October 30
Abstract
We investigate the hidden-charm pentaquarks and the hidden bottom pentaquarks as, respectively, $\bar{D}^{(*)}\Lambda_c$, $\bar{D}^{(*)}\Sigma_c^{(*)}$ and $\bar{B}^{(*)}\Lambda_b$, $\bar{B}^{(*)}\Sigma_b^{(*)}$ molecules coupled to the five-quark states.
The hidden charmed and bottom pentaquark states have been described by
taking into account both the meson-baryon channels, which encodes the dynamics at long distances, and a compact five-quark core, which encodes the short distance part.
As a result of our calculation, we find that, unlike the charmed sector, in the bottom sector, the pion exchange interaction is strong enough to produce resonant and bound states.
As the hidden-bottom pentaquarks are more likely to form than their hidden-charm counterparts,
the bottom sector is the more interesting environment to look for new pentaquark states.
DOI: https://doi.org/10.22323/1.326.0065
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