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Search for Structure in the Bs0 π± Invariant Mass Spectrum
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The B 0 s π ± invariant mass distribution is investigated in order to search for possible exotic meson states. The analysis is based on a data sample recorded with the LHCb detector corresponding to 3 fb − 1 of p p collision data at √ s = 7 and 8 TeV. No significant excess is found, and upper limits are set on the production rate of the claimed X ( 5568 ) state within the LHCb acceptance. Upper limits are also set as a function of the mass and width of a possible exotic meson decaying to the B 0 s π ± final state. The same limits also apply to a possible exotic meson decaying through the chain B * 0 s π ± , B * 0 s → B 0 s γ where the photon is excluded from the reconstructed decays.
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BADALOV, Alexey, et al. Search for Structure in the Bs0 π± Invariant Mass Spectrum. Physical Review Letters. 2016. Vol. 117, num. 15, pags. 152003-1-152003-9. ISSN 0031-9007. [consulted: 4 of August of 2026]. Available at: https://hdl.handle.net/2445/123649