Canonical interpretation of the X(4140) state within the $$^3P_0$$ 3P0 model

Autor: Wei Hao, Guan-Ying Wang, En Wang, Guan-Nan Li, De-Min Li
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: European Physical Journal C: Particles and Fields, Vol 80, Iss 7, Pp 1-10 (2020)
Druh dokumentu: article
ISSN: 1434-6044
1434-6052
DOI: 10.1140/epjc/s10052-020-8187-0
Popis: 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 $$\chi _{c1}(3P)$$ χc1(3P) interpretation for the X(4140), considering the mass spectra predicted in the quark model, and the strong decay properties within the $$^3P_0$$ 3P0 model. We also predict the strong decay properties of the charmonium states $$\chi _{c0}(3P)$$ χc0(3P) and $$\chi _{c2}(3P)$$ χc2(3P) . Our results show that the X(4140) state with the small width given in PDG can be explained as the charmonium state $$\chi _{c1}(3P)$$ χc1(3P) in the $$^3P_0$$ 3P0 model, and high precision measurement of the width of the X(4140) is crucial to understand its nature.
Databáze: Directory of Open Access Journals
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