Search for bbb¯b¯ tetraquark decays in 4 muons, B+B−, B0B¯0 and Bs0B¯s0 channels at LHC
Search for bbb¯b¯ tetraquark decays in 4 muons, B+B−, B0B¯0 and Bs0B¯s0 channels at LHC
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DOI：
10.1016/j.physletb.2020.135495
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发表时间：
2020-05
影响因子：
4.4
通讯作者：
C. Becchi;A. Giachino;L. Maiani;E. Santopinto
中科院分区：
文献类型：
--
作者：
C. Becchi;A. Giachino;L. Maiani;E. Santopinto
We perform a quantitative analysis of the decays of cccc 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=| T (0)| 2/| J/ψ (0)| 2, which can be computed with a considerable error. We find (0++)∼(2++)= 97±30. On the basis of our results and with the present sensitivity, LHCb should detect both 0++ and 2++ fully-charmed tetraquarks.© 2020 The Author (s). Published by Elsevier BV This is an open access article under the CC BY license
