Search for Rare Decays of D^{0} Mesons into Two Muons.

Aaij, R, Abdelmotteleb, ASW, Abellan Beteta, C, Abudinén, F ORCID: 0000-0002-6737-3528, Ackernley, T, Adeva, B, Adinolfi, M, Adlarson, P ORCID: 0000-0001-6280-3851, Afsharnia, H, Agapopoulou, C
et al (show 1064 more authors) (2023) Search for Rare Decays of D^{0} Mesons into Two Muons. Physical review letters, 131 (4). 041804-.

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A search for the very rare D^{0}→μ^{+}μ^{-} decay is performed using data collected by the LHCb experiment in proton-proton collisions at sqrt[s]=7, 8, and 13 TeV, corresponding to an integrated luminosity of 9  fb^{-1}. The search is optimized for D^{0} mesons from D^{*+}→D^{0}π^{+} decays but is also sensitive to D^{0} mesons from other sources. No evidence for an excess of events over the expected background is observed. An upper limit on the branching fraction of this decay is set at B(D^{0}→μ^{+}μ^{-})<3.1×10^{-9} at a 90% C.L. This represents the world's most stringent limit, constraining models of physics beyond the standard model.

Item Type: Article
Uncontrolled Keywords: LHCb Collaboration
Divisions: Faculty of Science and Engineering > School of Physical Sciences
Depositing User: Symplectic Admin
Date Deposited: 18 Sep 2023 07:49
Last Modified: 18 Sep 2023 07:49
DOI: 10.1103/physrevlett.131.041804
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