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Published June 1, 2020 | Submitted + Published
Journal Article Open

Search for lepton-flavor-violating decays D⁰ → X⁰e±μ∓

Lees, J. P.
Poireau, V.
Tisserand, V.
Grauges, E.
Palano, A.
Eigen, G.
Brown, D. N.
Kolomensky, Yu. G.
Fritsch, M.
Koch, H.
Schroeder, T.
Cheaib, R.
Hearty, C.
Mattison, T. S.
McKenna, J. A.
So, R. Y.
Blinov, V. E.
Buzykaev, A. R.
Druzhinin, V. P.
Golubev, V. B.
Kozyrev, E. A.
Kravchenko, E. A.
Onuchin, A. P.
Serednyakov, S. I.
Skovpen, Yu. I.
Solodov, E. P.
Todyshev, K. Yu.
Lankford, A. J.
Dey, B.
Gary, J. W.
Long, O.
Eisner, A. M.
Lockman, W. S.
Panduro Vazquez, W.
Chao, D. S.
Cheng, C. H. ORCID icon
Echenard, B.
Flood, K. T.
Hitlin, D. G. ORCID icon
Kim, J.
Li, Y.
Lin, D. X.
Miyashita, T. S.
Ongmongkolkul, P.
Oyang, J.
Porter, F. C. ORCID icon
Röhrken, M.
Huard, Z.
Meadows, B. T.
Pushpawela, B. G.
Sokoloff, M. D.
Sun, L.
Smith, J. G.
Wagner, S. R.
Bernard, D.
Verderi, M.
Bettoni, D.
Bozzi, C.
Calabrese, R.
Cibinetto, G.
Fioravanti, E.
Garzia, I.
Luppi, E.
Santoro, V.
Calcaterra, A.
de Sangro, R.
Finocchiaro, G.
Martellotti, S.
Patteri, P.
Peruzzi, I. M.
Piccolo, M.
Rotondo, M.
Zallo, A.
Passaggio, S.
Patrignani, C.
Shuve, B. J.
Lacker, H. M.
Bhuyan, B.
Mallik, U.
Chen, C.
Cochran, J.
Prell, S.
Gritsan, A. V.
Arnaud, N.
Davier, M.
Le Diberder, F.
Lutz, A. M.
Wormser, G.
Lange, D. J.
Wright, D. M.
Coleman, J. P.
Gabathuler, E.
Hutchcroft, D. E.
Payne, D. J.
Touramanis, C.
Bevan, A. J.
Di Lodovico, F.
Sacco, R.
Cowan, G.
Banerjee, Sw.
Brown, D. N.
Davis, C. L.
Denig, A. G.
Gradl, W.
Griessinger, K.
Hafner, A.
Schubert, K. R.
Barlow, R. J.
Lafferty, G. D.
Cenci, R.
Jawahery, A.
Roberts, D. A.
Cowan, R.
Robertson, S. H.
Seddon, R. M.
Neri, N.
Palombo, F.
Cremaldi, L.
Godang, R.
Summers, D. J.
Taras, P.
De Nardo, G.
Sciacca, C.
Raven, G.
Jessop, C. P.
LoSecco, J. M.
Honscheid, K.
Kass, R.
Gaz, A.
Margoni, M.
Posocco, M.
Simi, G.
Simonetto, F.
Stroili, R.
Akar, S.
Ben-Haim, E.
Bomben, M.
Bonneaud, G. R.
Calderini, G.
Chauveau, J.
Marchiori, G.
Ocariz, J.
Biasini, M.
Manoni, E.
Rossi, A.
Batignani, G.
Bettarini, S.
Carpinelli, M.
Casarosa, G.
Chrzaszcz, M.
Forti, F.
Giorgi, M. A.
Lusiani, A.
Oberhof, B.
Paoloni, E.
Rama, M.
Rizzo, G.
Walsh, J. J.
Zani, L.
Smith, A. J. S.
Anulli, F.
Faccini, R.
Ferrarotto, F.
Ferroni, F.
Pilloni, A.
Piredda, G.
Bünger, C.
Dittrich, S.
Grünberg, O.
Heß, M.
Leddig, T.
Voß, C.
Waldi, R.
Adye, T.
Wilson, F. F. ORCID icon
Emery, S.
Vasseur, G.
Aston, D.
Cartaro, C.
Convery, M. R.
Dorfan, J.
Dunwoodie, W.
Ebert, M.
Field, R. C.
Fulsom, B. G.
Graham, M. T.
Hast, C.
Innes, W. R.
Kim, P.
Leith, D. W. G. S.
Luitz, S.
MacFarlane, D. B.
Muller, D. R.
Neal, H.
Ratcliff, B. N.
Roodman, A.
Sullivan, M. K.
Va'vra, J.
Wisniewski, W. J.
Purohit, M. V.
Wilson, J. R.
Randle-Conde, A.
Sekula, S. J.
Ahmed, H.
Bellis, M.
Burchat, P. R.
Puccio, E. M. T.
Alam, M. S.
Ernst, J. A.
Gorodeisky, R.
Guttman, N.
Peimer, D. R.
Soffer, A.
Spanier, S. M.
Ritchie, J. L.
Schwitters, R. F.
Izen, J. M.
Lou, X. C.
Bianchi, F.
De Mori, F.
Filippi, A.
Gamba, D.
Lanceri, L.
Vitale, L.
Martinez-Vidal, F.
Oyanguren, A.
Albert, J.
Beaulieu, A.
Bernlochner, F. U.
King, G. J.
Kowalewski, R.
Lueck, T.
Nugent, I. M.
Roney, J. M.
Sobie, R. J.
Tasneem, N.
Gershon, T. J.
Harrison, P. F.
Latham, T. E.
Prepost, R.
Wu, S. L.
BaBar Collaboration

Abstract

We present a search for seven lepton-flavor-violating neutral charm meson decays of the type D⁰ → X⁰e±μ∓, where X⁰ represents a π⁰, K⁰_S, K*⁰, ρ⁰, ϕ, ω, or η meson. The analysis is based on 468  fb⁻¹ of e⁺e⁻ annihilation data collected at or close to the Υ(4S) resonance with the BABAR detector at the SLAC National Accelerator Laboratory. No significant signals are observed, and we establish 90% confidence level upper limits on the branching fractions in the range (5.0−22.5) × 10⁻⁷. The limits are between 1 and 2 orders of magnitude more stringent than previous measurements.

Additional Information

© 2020 Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3. Received 21 April 2020; accepted 26 May 2020; published 15 June 2020. We are grateful for the extraordinary contributions of our PEP-II colleagues in achieving the excellent luminosity and machine conditions that have made this work possible. The success of this project also relies critically on the expertise and dedication of the computing organizations that support BABAR. The collaborating institutions wish to thank SLAC for its support and the kind hospitality extended to them. This work is supported by the U.S. Department of Energy and National Science Foundation, the Natural Sciences and Engineering Research Council (Canada), the Commissariat à l'Energie Atomique and Institut National de Physique Nucléaire et de Physique des Particules (France), the Bundesministerium für Bildung und Forschung and Deutsche Forschungsgemeinschaft (Germany), the Istituto Nazionale di Fisica Nucleare (Italy), the Foundation for Fundamental Research on Matter (The Netherlands), the Research Council of Norway, the Ministry of Education and Science of the Russian Federation, Ministerio de Economía y Competitividad (Spain), the Science and Technology Facilities Council (United Kingdom), and the Binational Science Foundation (U.S.-Israel). Individuals have received support from the Marie-Curie IEF program (European Union) and the A. P. Sloan Foundation (USA).

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Published - PhysRevD.101.112003.pdf

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