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  • Search for rare and forbidd...
    Link, J.M; Yager, P.M; Anjos, J.C; Bediaga, I; Göbel, C; Magnin, J; Massafferri, A; de Miranda, J.M; Pepe, I.M; Polycarpo, E; dos Reis, A.C; Carrillo, S; Casimiro, E; Cuautle, E; Sánchez-Hernández, A; Vázquez, F; Agostino, L; Cinquini, L; O'Reilly, B; Segoni, I; Wahl, M; Butler, J.N; Cheung, H.W.K; Gaines, I; Garbincius, P.H; Garren, L.A; Gottschalk, E; Kasper, P.H; Kreymer, A.E; Kutschke, R; Wang, M; Benussi, L; Bertani, L; Bianco, S; Fabbri, F.L; Zallo, A; Reyes, M; Cawlfield, C; Kim, D.Y; Rahimi, A; Wiss, J; Gardner, R; Chung, Y.S; Kang, J.S; Ko, B.R; Lee, K.B; Cho, K; Park, H; Alimonti, G; Barberis, S; Boschini, M; D'Angelo, P; DiCorato, M; Dini, P; Edera, L; Erba, S; Giammarchi, M; Inzani, P; Leveraro, F; Malvezzi, S; Menasce, D; Mezzadri, M; Moroni, L; Pedrini, D; Pontoglio, C; Prelz, F; Rovere, M; Sala, S; Davenport, T.F; Arena, V; Boca, G; Bonomi, G; Gianini, G; Liguori, G; Lopes Pegna, D; Merlo, M.M; Pantea, D; Ratti, S.P; Riccardi, C; Vitulo, P; Hernandez, H; Lopez, A.M; Luiggi, E; Mendez, H; Paris, A; Quinones, J; Rolke, W.A; Zhang, Y; Wilson, J.R; Handler, T; Mitchell, R; Engh, D; Hosack, M; Johns, W.E; Nehring, M; Sheldon, P.D; Stenson, K; Vaandering, E.W; Webster, M; Sheaff, M

    Physics letters. B, 10/2003, Volume: 572, Issue: 1-2
    Journal Article

    Using a high statistics sample of photo-produced charm particles from the FOCUS experiment at Fermilab, we report results of a search for eight rare and Standard-Model-forbidden decays: D+, Ds+→h±μ∓μ+ (with h=π,K). Improvement over previous results by a factor of 1.7–14 is realized. Our branching ratio upper limit D+→π+μ−μ+ of 8.8×10−6 at the 90% C.L. is below the current MSSM R-parity violating constraint.