https://doi.org/10.1140/epjc/s10052-022-10567-8
Regular Article - Theoretical Physics
Weak-decay searches for 
tetraquarks
1
School of Nuclear Science and Technology, Lanzhou University, 730000, Lanzhou, China
2
Frontiers Science Center for Rare Isotopes, and Lanzhou Center for Theoretical Physics, and Key Laboratory of Theoretical Physics of Gansu Province, Lanzhou University, 730000, Lanzhou, China
3
Center for High Energy Physics, Peking University, 100871, Beijing, China
Received:
7
May
2022
Accepted:
29
June
2022
Published online:
25
July
2022
We propose to search for the open heavy-flavor exotic states with the quark components of with 
via their weak decays. If there exist such exotic states below the BK or DK thresholds, they can only decay weakly. The advantages include: (i) the experimental backgrounds from the secondary decay vertex are much lower due to the long lifetimes, (ii) the productions are large enough for only one heavy quark in such states, (iii) the thresholds of BK or DK are about 260 MeV higher compared to the 
or 
thresholds of the configurations of 
or 
, with a higher possibility to exist such weakly-decay particles, and (iv) if observed, their inner structures are easier understood since they can not be induced by the kinematic effects.
© The Author(s) 2022
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