A measurement of Γ (DS+ → φμ+ν) /Γ (DS+ → φπ+)

• Published in: Physics letters. B 1993-08, Vol.313 (1-2), p.253-259
• Main Authors: Frabetti, P.L., Cheung, H.W.K., Cumalat, J.P., Dallapiccola, C., Ginkel, J.F., Greene, S.V., Johns, W.E., Nehring, M.S., Butler, J.N., Cihangir, S., Gaines, I., Garbincius, P.H., Garren, L., Gourlay, S.A., Harding, D.J., Kasper, P., Kreymer, A., Lebrun, P., Shukla, S., Vittone, M., Bianco, S., Fabbri, F.L., Sarwar, S., Zallo, A., Culbertson, R., Gardner, R.W., Greene, R., Wiss, J., Alimonti, G., Bellini, G., Caccianiga, B., Cinquini, L., Di Corato, M., Giammarchi, M., Inzani, P., Leveraro, F., Malvezzi, S., Menasce, D., Meroni, E., Moroni, L., Pedrini, D., Perasso, L., Sala, A., Sala, S., Torretta, D., Buchholz, D., Claes, D., Gobbi, B., O'Reilly, B., Bishop, J.M., Cason, N.M., Kennedy, C.J., Kim, G.N., Lin, T.F., Puseljic, D.L., Ruchti, R.C., Shephard, W.D., Swiatek, J.A., Wu, Z.Y., Arena, V., Boca, G., Castoldi, C., Gianini, G., Ratti, S.P., Riccardi, C., Vitulo, P., Lopez, A., Grim, G.P., Paolone, V.S., Yager, P.M., Wilson, J.R., Sheldon, P.D., Davenport, F., Filaseta, J.F., Blackett, G.R., Pisharody, M., Handler, T., Cheon, B.G., Kang, J.S., Kim, K.Y.
• Format: Article
• Language: English
• Subjects: Exact sciences and technology; Hadron-induced high- and super-high-energy interactions (energy > 10 gev); Physics; Specific reactions and phenomenology; The physics of elementary particles and fields
• ISSN: 0370-2693; 1873-2445
• DOI: 10.1016/0370-2693(93)91221-8

Fermilab high-energy photoproduction experiment E687 measures a branching ratio of Γ (DS+ → φμ+ν) /Γ (DS+ → φμ+) = 0.58 ± 0.17 (stat) ± 0.07 (sys). This branching ratio is combined with theoretical inputs to obtain a new measurement of the DS+ absolute branching ratio of Γ (DS+ → φμ+) / Γ (DS+ → all) = 0.031 ± 0.009 (stat 0.005 (sys) ± 0.004 (theoretical).