%0 Journal Article
%T Search for D*(2007)0 → μ+ μ- in B- → π- μ+ μ- decays
%A LHCb Collaboration (Aaij, R. et al
%A Jaimes Elles, S. J.
%A Jashal, B. K.
%A Martinez-Vidal, F.
%A Oyanguren, A.
%A Rebollo De Miguel, M.
%A Remon Alepuz, C.
%A Ruiz Vidal, J.
%A Sanderswood, I.
%A Zhuo, J.
%J European Physical Journal C
%D 2023
%V 83
%N 7
%I Springer
%@ 1434-6044
%G English
%F LHCbCollaborationAaij_etal2023
%O WOS:001062453500001
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=5816), last updated on Wed, 10 Apr 2024 12:45:46 +0000
%X The very rare D*(2007)(0) -> mu(+) mu(-) decay is searched for by analysing B- -> pi (-) mu(+) mu(-) decays. The analysis uses a sample of beautymesons produced in protonproton collisions collected with the LHCb detector between 2011 and 2018, corresponding to an integrated luminosity of 9 fb(-1). The signal signature corresponds to simultaneous peaks in the mu(+) mu(-) and pi(-) mu(+) mu(-) invariant masses. No evidence for an excess of events over background is observed and an upper limit is set on the branching fraction of the decay at B(D-*(2007)(0) -> mu(+) mu(-)) < 2.6 x 10(-8) at 90% confidence level. This is the first limit on the branching fraction of D*(2007)(0) -> mu(+) mu(-) decays and the most stringent limit on D* (2007)(0) decays to leptonic final states. The analysis is the first search for a rare charm-meson decay exploiting production via beauty decays.
%R 10.1140/epjc/s10052-023-11759-6
%U https://arxiv.org/abs/2304.01981
%U https://doi.org/10.1140/epjc/s10052-023-11759-6
%P 666 - 14pp