We report on the results of a search for fourteen flavor changing neutral current, lepton number violating, or lepton family number violating decays of the charmed meson D+ in the large charm sample recorded by the Fetmilab photoproduction experiment E687. No evidence is seen for these rare and standard-model-forbidden decays, of the form D+ -> h(+-) l(-+) l+ (with h = pi, K and l = e, mu); we determine 90% confidence level upper limits on their absolute branching fractions in the range (9-20) x 10(-5).
Search for rare and forbidden decays of the charmed meson D+ / P.L. Frabetti, H.W.K. Cheung, J.P. Cumalat, C. Dallapiccola, J.F. Ginkel, W.E. Johns, M.S. Nehring, W. Vaandering, J.N. Butler, S. Cihangir, I. Gaines, P.H. Garbincius, L. Garren, S.A. Gourlay, D.J. Harding, P. Kasper, A. Kreymer, P. Lebrun, S. Shukla, M. Vittone, S. Bianco, F.L. Fabbri, S. Sarwar, A. Zallo, C. Cawlfield, R. Culbertson, R.W. Gardner, R. Greene, J. Wiss, G. Alimonti, G. Bellini, M. Boschini, D. Brambilla, B. Caccianiga, L. Cinquini, M. Di Corato, P. Dini, M. Giammarchi, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, E. Meroni, L. Milazzo, L. Moroni, D. Pedrini, L. Perasso, F. Prelz, A. Sala, S. Sala, D. Torretta, D. Buchholz, D. Claes, B. Gobbi, B. O'Reilly, J.M. Bishoph, N.M. Cason, C.J. Kennedy, G.N. Kim T.F. Lin, D.L. Puseljic, R.C. Ruchti, W.D. Shephard, J.A. Swiatek, Z.Y. Wu, V. Arena, G. Boca, G. Bonomi, C. Castoldi, G. Gianini, M. Merlo, S.P. Ratti, C. Riccardi, L. Viola, P. Vitulo, A. Lopez, L. Mendez, E. Montiel, D. Olaya, E. Ramirez, C. Rivera, Y. Zhangj, G.P. Grim, L.M. Link, V.S. Paolone, P.M. Yager, J.R. Wilson, J. Cao, M. Hosack, J. Hughes, P.D. Sheldon, F. Davenport, K. Danyo, T. Handler, B.G. Cheon, Y.S. Chung, J.S. Kang, K.Y. Kim, K.B. Lee, S.S. Myung. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - 398:1-2(1997 Apr 10), pp. 239-244. [10.1016/S0370-2693(97)00229-3]
Search for rare and forbidden decays of the charmed meson D+
G. Alimonti;G. Bellini;B. Caccianiga;M. Di Corato;M. Giammarchi;F. Leveraro;E. Meroni;G. Gianini;
1997
Abstract
We report on the results of a search for fourteen flavor changing neutral current, lepton number violating, or lepton family number violating decays of the charmed meson D+ in the large charm sample recorded by the Fetmilab photoproduction experiment E687. No evidence is seen for these rare and standard-model-forbidden decays, of the form D+ -> h(+-) l(-+) l+ (with h = pi, K and l = e, mu); we determine 90% confidence level upper limits on their absolute branching fractions in the range (9-20) x 10(-5).
Pubblicazioni consigliate
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
