Measurement of Charmed-Particle Lifetimes and Decay Branching Ratios
- M Adamovich
- Yu Alexandrov
- J Bolta
- L Bravo
- G. di Caporiacco
- A Cartacci
- V Castillo
- M Chernyavsky
- A Conti
- M Dagliana
- M Dameri
- G Diambrini-Palazzi
- A Forino
- J Garcia
- S Gerassimov
- R Gessaroli
- E Higon
- S Kharlamov
- V Larionova
- R Llosa
- A Lopez
- J Lory
- A Marchionni
- B Monteleoni
- R Niembro
- G Orlova
- B Osculati
- G Parrini
- N Peresadko
- A Quareni-Vignudelli
- A Ruiz
- N Salmanova
- J Salt
- M. A Sanchis
- M Sannino
- D Schune
- S Tentindo
- G Tomasini
- M Tretyakova
- Tsai Chu
- G Vanderhaeghe
- F Viaggi
- E Villar
- B Willot
DOIAbstract
The lifetimes of charmed hadrons photoproduced in nuclear emulsion have been computed from a practically background-free sample of 44 neutral particle decays and 42 charged-particle decays including 27D\ub1, 11\u39bc+, 1Ds+ and 3 ambiguous decays. The values obtained are \u3c4(D0, bar D0) = (3.6-0.8+1.2 \ub1 0.7) 10-13 s, \u3c4(D\ub1) = (5.0-1.0+1.5 \ub1 1.9) 10-13 s, \u3c4(\u39bc+) = = (2.3-0.6+0.9 \ub1 0.4) 10-13 s. Branching ratios of various decay topologies were also obtained
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