A1 Journal article (refereed)
A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC (2020)

Becchi, C., Ferretti, J., Giachino, A., Maiani, L., & Santopinto, E. (2020). A study of ccc¯c¯ tetraquark decays in 4 muons and in D(⁎)D¯(⁎) at LHC. Physics Letters B, 811, Article 135952. https://doi.org/10.1016/j.physletb.2020.135952

JYU authors or editors

Publication details

All authors or editors: Becchi, C.; Ferretti, Jacopo; Giachino, A.; Maiani, L.; Santopinto, E.

Journal or series: Physics Letters B

ISSN: 0370-2693

eISSN: 1873-2445

Publication year: 2020

Volume: 811

Article number: 135952

Publisher: Elsevier

Publication country: Netherlands

Publication language: English

DOI: https://doi.org/10.1016/j.physletb.2020.135952

Publication open access: Openly available

Publication channel open access: Open Access channel

Publication is parallel published (JYX): https://jyx.jyu.fi/handle/123456789/72694

Publication is parallel published: https://arxiv.org/abs/2006.14388

Abstract

We perform a quantitative analysis of the decays of ccc¯c¯ tetraquarks with JPC=0++,2++ into 4 muons and into hidden- and open-charm mesons and estimate, for the first time, the fully charmed tetraquark decay width. The calculated cross section upper limit is ∼39(780) fb for the 4 muons channel, and ∼42(616) pb for the ⁎⁎D(⁎)D¯(⁎)→eμ channel, in the 0++(2++) case. Decay widths depend upon the additional parameter ξ=|ΨT(0)|2/|ΨJ/ψ(0)|2, which can be computed with a considerable error. We find Γ(0++)∼Γ(2++)=97±30. On the basis of our results and with the present sensitivity, LHCb should detect both 0++ and 2++ fully-charmed tetraquarks.

Keywords: particle physics

Free keywords: quantitative analysis

Contributing organizations

Ministry reporting: Yes

Reporting Year: 2020

JUFO rating: 2