Is the newly reported $X(5568)$ a $B\bar{K}$ molecular state?

Abstract

In this work, we perform a dynamical study of the $B^{(\ast )}$ and $\bar{K}$ interaction and show that the newly reported $X(5568)$ or $X(5616)$ cannot be assigned to be an isovector $B\bar{K}$ or $B^{\ast }\bar{K}$ molecular state. We continue to investigate the isoscalar $B^{(\ast )}\bar{K}$ systems, and the $B^{(\ast )}\bar{K}$ systems with isospin $I=0,1$, and predict the existence of several isoscalar $B^{(\ast )}{\bar{K}}^{(\ast )}$ molecular states. A new task of exploring open-bottom molecular states will be created for future experiments.

6 pages, 3 tables and 1 figure. Version accepted for publication in Phys. Rev. D

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Cited by in corpus (12)

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• New type of hydrogenlike charm-pion or charm-kaon matter
• Possible open charm molecular pentaquarks from ${\Lambda }_c{K}^{(\ast )}/{\Sigma }_c{K}^{(\ast )}$ interactions
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• Predicting possible molecular states of nucleons with ${\Xi }_c$, ${\Xi }_c^{\ast }$, and ${\Xi }_c^{\prime }$
• Investigating $S$-wave bound states composed of two pseudoscalar mesons
• A coupled-channel perspective analysis on bottom-strange molecular pentaquarks
• Molecular pentaquarks composed of a ground-state octet baryon and a $P-$wave anticharmed meson