@Article{LHCbCollaborationAaij_etal2015, author="LHCb Collaboration (Aaij, R. et al and Martinez-Vidal, F. and Oyanguren, A. and Ruiz Valls, P. and Sanchez Mayordomo, C.", title="Search for Hidden-Sector Bosons in B-0 -> K*(0)mu(+)mu(-) Decays", journal="Physical Review Letters", year="2015", publisher="Amer Physical Soc", volume="115", number="16", pages="161802 - 10pp", abstract="A search is presented for hidden-sector bosons, chi, produced in the decay B-0 -> K*(892)(0)chi, with K*(892)(0) -> K+pi(-) and chi -> mu(+)mu(-). The search is performed using pp-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(chi) <= 4350 MeV, and upper limits are placed on the branching fraction product B(B-0 -> K*(892)(0)chi) X B(chi -> mu(+)mu(-)) as a function of the mass and lifetime of the chi boson. These limits are of the order of 10(-9) for chi lifetimes less than 100 ps over most of the m(chi) range, and place the most stringent constraints to date on many theories that predict the existence of additional low-mass bosons.", optnote="WOS:000362909100005", optnote="exported from refbase (https://references.ific.uv.es/refbase/show.php?record=2414), last updated on Thu, 05 Nov 2015 15:09:57 +0000", issn="0031-9007", doi="10.1103/PhysRevLett.115.161802", opturl="http://arxiv.org/abs/1508.04094", opturl="https://doi.org/10.1103/PhysRevLett.115.161802", archivePrefix="arXiv", eprint="1508.04094", language="English" }