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Nearly five years after the Tevatron was decommissioned the experimental collaborations are still analyzing data and today Fermilab announced that DZero discovers a new particle consistent with a tetraquark
This candidate is different from previous discoveries in that it contains four different flavours of quarks whereas previous candidates contain a quark-antiquark pair of the same flavour.
The paper at the arXiv: Observation of a new ##B_s^0 π^\pm## state
This candidate is different from previous discoveries in that it contains four different flavours of quarks whereas previous candidates contain a quark-antiquark pair of the same flavour.
The paper at the arXiv: Observation of a new ##B_s^0 π^\pm## state