Search for Rare Decays of D0 Mesons into Two Muons

A search for the very rare D0 → μ+μ- decay is performed using data collected by the LHCb experiment in proton-proton collisions at s=7 , 8, and 13 TeV, corresponding to an integrated luminosity of 9  fb-1 . The search is optimized for D0 mesons from D*+ → D0π+ decays but is also sensitive to D0 meso...

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Published in:Physical review letters 2023-07, Vol.131 (4)
Main Authors: Aaij, R, Abdelmotteleb, A.S.W, Abellan Beteta, C, Abudinén, F, Ackernley, T, Adeva, B, Adinolfi, M, Adlarson, P, Afsharnia, H, Agapopoulou, C, Aidala, C.A, Aiola, S, Ajaltouni, Z, Akar, S, Akiba, K, Albrecht, J, Alessio, F, Alexander, M, Alfonso Albero, A, Aliouche, Z, Alvarez Cartelle, P, Amalric, R, Amato, S, Amey, J.L, Amhis, Y, An, L, Anderlini, L, Andersson, M, Andreianov, A, Andreotti, M, Andreou, D, Ao, D, Archilli, F, Artamonov, A, Artuso, M, Aslanides, E, Atzeni, M, Audurier, B, Bachmann, S, Bachmayer, M, Back, J.J, Bailly-Reyre, A, Baladron Rodriguez, P, Balagura, V, Baldini, W, Baptista de Souza Leite, J, Barbetti, M, Barlow, R.J, Barsuk, S, Barter, W, Bartolini, M, Baryshnikov, F, Basels, J.M, Bassi, G, Batsukh, B, Battig, A, Bay, A, Beck, A, Becker, M, Bedeschi, F, Bediaga, I.B, Beiter, A, Belavin, V, Belin, S, Bellee, V, Belous, K, Belov, I, Belyaev, I, Benane, G, Bencivenni, G, Ben-Haim, E, Berezhnoy, A, Bernet, R, Bernet Andres, S, Berninghoff, D, Bernstein, H.C, Bertella, C, Bertolin, A, Betancourt, C, Betti, F, Bezshyiko, Ia, Bhasin, S, Bhom, J, Bian, L, Bieker, M.S, Biesuz, N.V, Bifani, S, Billoir, P, Biolchini, A, Birch, M, Bishop, F.C.R, Bitadze, A, Bizzeti, A, Blago, M.P, Blake, T, Blanc, F, Blank, J.E, Blusk, S, Bobulska, D, Boelhauve, J.A
Format: Article
Language:English
Subjects:
High Energy Physics - Experiment
Physics
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Summary:A search for the very rare D0 → μ+μ- decay is performed using data collected by the LHCb experiment in proton-proton collisions at s=7 , 8, and 13 TeV, corresponding to an integrated luminosity of 9  fb-1 . The search is optimized for D0 mesons from D*+ → D0π+ decays but is also sensitive to D0 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 ( D0 → μ+μ- )
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.131.041804