Measurement of the D(s)+ lifetime

J M Link; P M Yager; J C Anjos; I Bediaga; C Castromonte; A A Machado; J Magnin; A Massafferi; 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; S Pacetti; 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 Milazzo; L Moroni; D Pedrini; C Pontoglio; F Prelz; M Rovere; S Sala; T F Davenport 3rd; 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; C Göbel; 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; FOCUS Collaboration

doi:10.1103/PhysRevLett.95.052003

Measurement of the D(s)+ lifetime

Phys Rev Lett. 2005 Jul 29;95(5):052003. doi: 10.1103/PhysRevLett.95.052003. Epub 2005 Jul 29.

Authors

J M Link¹, P M Yager, J C Anjos, I Bediaga, C Castromonte, A A Machado, J Magnin, A Massafferi, 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, S Pacetti, 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 Milazzo, L Moroni, D Pedrini, C Pontoglio, F Prelz, M Rovere, S Sala, T F Davenport 3rd, 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, C Göbel, 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; FOCUS Collaboration

Affiliation

¹ University of California, Davis, California 95616, USA.

PMID: 16090867
DOI: 10.1103/PhysRevLett.95.052003

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*(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.