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) over bar*(892)K-0(+), 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) over bar*(892)K-0(+) decays. This is a significant improvement over the present world average.

Measurement of the D-s (+) lifetime / J.M. Link, P.M. Yager, J.C. Anjos, I. Bediaga, C. Göbel, A.A. Machado, J. Magnin, A. Massafferri, J.M. De Miranda, I.M. Pepe, E. Polycarpo, A.C. Dos Reis, S. Carrillo, E. Casimiro, E. Cuautle, A. Sánchez-Hernández, C. Uribe, F. Vázquez, L. Agostino, L. Cinquini, J.P. Cumalat, B. O'Reilly, I. Segoni, K. Stenson, J.N. Butler, H.W.K. Cheung, G. Chiodini, I. Gaines, P.H. Garbincius, L.A. Garren, E. Gottschalk, P.H. Kasper, A.E. Kreymer, R. Kutschke, M. Wang, L. Benussi, M. Bertani, S. Bianco, F.L. Fabbri, A. Zallo, M. Reyes, C. Cawlfield, D.Y. Kim, A. Rahimi, J. Wiss, R. Gardner, A. Kryemadhi, Y.S. Chung, J.S. Kang, B.R. Ko, J.W. Kwak, K.B. Lee, K. Cho, H. Park, G. Alimonti, S. Barberis, M. Boschini, A. Cerutti, P. D'Angelo, M. DiCorato, P. Dini, L. Edera, S. Erba, P. Inzani, F. Leveraro, S. Malvezzi, D. Menasce, M. Mezzadri, L. Moroni, D. Pedrini, C. Pontoglio, F. Prelz, M. Rovere, S. Sala, T.F. Davenport III, V. Arena, G. Boca, G. Bonomi, G. Gianini, G. Liguori, D. Lopes Pegna, M.M. Merlo, D. Pantea, S.P. Ratti, C. Riccardi, P. Vitulo, H. Hernandez, A.M. Lopez, H. Mendez, A. Paris, J. Quinones, J.E. Ramirez, Y. Zhang, J.R. Wilson, T. Handler, R. Mitchell, D. Engh, M. Hosack, W.E. Johns, E. Luiggi, J.E. Moore, M. Nehring, P.D. Sheldon, E.W. Vaandering, M. Webster, M. Sheaff. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 95:5(2005). [10.1103/PhysRevLett.95.052003]

Measurement of the D-s (+) lifetime

F. Leveraro;G. Gianini;
2005

Abstract

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) over bar*(892)K-0(+), 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) over bar*(892)K-0(+) decays. This is a significant improvement over the present world average.
Settore INF/01 - Informatica
2005
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/14072
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