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arXiv · 1306.6725

Baryonia and near-threshold enhancements

Chengrong Deng·Jialun Ping·Youchang Yang·Fan Wang
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Abstract

The baryon-antibaryon spectrum consisting of strange, charm and bottom quarks is studied in the color flux-tube model with a multi-body confinement interaction. Numerical results indicate that many low-spin baryon-antibaryon states can form compact hexaquark states and are stable against the decay into a baryon and an antibaryon. The multi-body confinement interaction as a binding mechanism plays an important role in the formation of the states. They can be searched in the $e^+e^-$ annihilation and charmonium or bottomonium decay if they really exist. The newly reported states, X(1835), X(2370), Y(2175), Y(4360) and Y_b(10890), may be interpreted as $N\bar{N}$, $\Delta\bar{\Delta}$, $\Lambda\bar{\Lambda}$, $\Lambda_c\bar{\Lambda}_c$ and $\Lambda_b\bar{\Lambda}_b$ states, respectively.

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Chengrong Deng, Jialun Ping, Youchang Yang, Fan Wang. 2013-06-28. Baryonia and near-threshold enhancements. https://doi.org/10.1103/physrevd.88.074007

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