In:
The European Physical Journal C, Springer Science and Business Media LLC, Vol. 80, No. 7 ( 2020-07)
Abstract:
Recently, the LHCb Collaboration has confirmed the state X (4140), with a mass $$M=4146.5\pm 4.5^{+4.6}_{-2.8}$$ M = 4146.5 ± 4 . 5 - 2.8 + 4.6 MeV, and a much larger width $$\Gamma =83\pm 21^{+21}_{-14}$$ Γ = 83 ± 21 - 14 + 21 MeV than the previous experimental measurements, which has confused the understanding of its nature. We will investigate the possibility of the $$\chi _{c1}(3P)$$ χ c 1 ( 3 P ) interpretation for the X (4140), considering the mass spectra predicted in the quark model, and the strong decay properties within the $$^3P_0$$ 3 P 0 model. We also predict the strong decay properties of the charmonium states $$\chi _{c0}(3P)$$ χ c 0 ( 3 P ) and $$\chi _{c2}(3P)$$ χ c 2 ( 3 P ) . Our results show that the X (4140) state with the small width given in PDG can be explained as the charmonium state $$\chi _{c1}(3P)$$ χ c 1 ( 3 P ) in the $$^3P_0$$ 3 P 0 model, and high precision measurement of the width of the X (4140) is crucial to understand its nature.
Type of Medium:
Online Resource
ISSN:
1434-6044
,
1434-6052
DOI:
10.1140/epjc/s10052-020-8187-0
Language:
English
Publisher:
Springer Science and Business Media LLC
Publication Date:
2020
detail.hit.zdb_id:
1397769-6
detail.hit.zdb_id:
1459069-4
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