Measurement of the D(s)+ lifetime

A high statistics measurement of the D(s)+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, D(s)+ --> phi(1020)pi+ and D(s)+ -->K*(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5(st...

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Veröffentlicht in:	Physical review letters 2005-07, Vol.95 (5), p.052003-052003
Hauptverfasser:	Link, J M, Yager, P M, Anjos, J C, Bediaga, I, Castromonte, C, Machado, A A, Magnin, J, Massafferi, A, de Miranda, J M, Pepe, I M, Polycarpo, E, dos Reis, A C, Carrillo, S, Casimiro, E, Cuautle, E, Sánchez-Hernández, A, Uribe, C, Vázquez, F, Agostino, L, Cinquini, L, Cumalat, J P, O'Reilly, B, Segoni, I, Stenson, K, Butler, J N, Cheung, H W K, Chiodini, G, Gaines, I, Garbincius, P H, Garren, L A, Gottschalk, E, Kasper, P H, Kreymer, A E, Kutschke, R, Wang, M, Benussi, L, Bertani, M, Bianco, S, Fabbri, F L, Pacetti, S, Zallo, A, Reyes, M, Cawlfield, C, Kim, D Y, Rahimi, A, Wiss, J, Gardner, R, Kryemadhi, A, Chung, Y S, Kang, J S, Ko, B R, Kwak, J W, Lee, K B, Cho, K, Park, H, Alimonti, G, Barberis, S, Boschini, M, Cerutti, A, D'Angelo, P, DiCorato, M, Dini, P, Edera, L, Erba, S, Inzani, P, Leveraro, F, Malvezzi, S, Menasce, D, Mezzadri, M, Milazzo, L, Moroni, L, Pedrini, D, Pontoglio, C, Prelz, F, Rovere, M, Sala, S, Davenport, 3rd, T F, Arena, V, Boca, G, Bonomi, G, Gianini, G, Liguori, G, Pegna, D Lopes, Merlo, M M, Pantea, D, Ratti, S P, Riccardi, C, Vitulo, P, Göbel, C, Hernandez, H, Lopez, A M, Mendez, H, Paris, A, Quinones, J, Ramirez, J E, Zhang, Y, Wilson, J R, Handler, T, Mitchell, R, Engh, D
Format:	Artikel
Sprache:	eng
Schlagworte:	D PLUS MESONS FERMILAB K-892 MESONS KAONS PLUS LIFETIME PARTICLE DECAY PHI-1020 MESONS PHOTOPRODUCTION PHYSICS OF ELEMENTARY PARTICLES AND FIELDS PIONS PLUS
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Beschreibung
Zusammenfassung:	A high statistics measurement of the D(s)+ lifetime from the Fermilab fixed-target FOCUS photoproduction experiment is presented. We describe the analysis of the two decay modes, D(s)+ --> phi(1020)pi+ and D(s)+ -->K(892)0K+, used for the measurement. The measured lifetime is 507.4 +/- 5.5(stat) +/- 5.1(syst) fs using 8961 +/- 105 D(s)+ --> phi(1020)pi+ and 4680 +/- 90 D(s)+ --> K(892)0K+ decays. This is a significant improvement over the present world average.
ISSN:	0031-9007 1079-7114
DOI:	10.1103/PhysRevLett.95.052003