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Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/132907
Search for Hidden-Sector Bosons in B0→K*0μ+μ− Decays
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A search is presented for hidden-sector bosons, χ , produced in the decay B 0 → K ∗ ( 892 ) 0 χ , with K ∗ ( 892 ) 0 → K + π − and χ → μ + μ − . The search is performed using p p -collision data corresponding to 3.0 fb − 1 collected with the LHCb detector. No significant signal is observed in the accessible mass range 214 ≤ m ( χ ) ≤ 4350 MeV , and upper limits are placed on the branching fraction product B ( B 0 → K ∗ ( 892 ) 0 χ ) × B ( χ → μ + μ − ) as a function of the mass and lifetime of the χ boson. These limits are of the order of 1 0 − 9 for χ lifetimes less than 100 ps over most of the m ( χ ) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons.
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BADALOV, Alexey, et al. Search for Hidden-Sector Bosons in B0→K*0μ+μ− Decays. Physical Review Letters. 2015. Vol. 115, num. 16, pags. 161802. ISSN 0031-9007. [consulted: 12 of June of 2026]. Available at: https://hdl.handle.net/2445/132907