Lifetime measurement of charm mesons produced in pi 12p and pp interactions at 360 GeV/c
- M., Aguilar Benitez
- W. W., Allison
- P., Bagnaia
- J., Baland
- L., Barone
- W., Bartl
- G., Bertrand Coremans
- Bettini, Alessandro
- R., Bizzarri
- M., Boratav
- G., Borreani
- F., Bruyant
- E., Castelli
- D., Cauz
- P., Checchia
- P. V., Chliapnikov
- G., Ciapetti
- D., Crennell
- H., Dibon
- E., Di Capua
- C., Dionisi
- J., Dolbeau
- 1,
- J., Duboc
- J., Dumarchez
- F., Etienne
- A., Ferrando
- C., Fisher
- Fisjak, Y. u. V.
- R., Fr\ufchwirth
- Gasparini, Ugo
- S., Gentile
- P., Girtler
- F., Grard
- F., Hartjes
- J., Hernandez
- P., Herquet
- S. O., Holmgren
- J., Hrubec
- P. T., Hughes
- K. E., Johansson
- A. G., Kholodenko
- E. P., Kistenev
- N., Kurtz
- P., Ladron de Guevara
- H., Leutz
- P., Loverre
- M., Macdermott
- F., Marchetto
- F., Marzano
- A., Michalon
- M. E., Michalon Mentzer
- T., Moa
- L., Montanet
- G., Neuhofer
- H., Nguyen
- S., Nilsson
- Peruzzo, Luigi
- P., Pilette
- C., Pinori
- G., Piredda
- A., Poppleton
- P., Poropat
- P., Porth
- S., Reucroft
- J., Richardson
- G., Rinaudo
- L., Robb
- H., Rohringer
- P., Rossi
- Sartori, Giorgio
- M., Sessa
- R., Settles
- A., Stergiou
- V. A., Stopchenko
- A., Subramanian
- D., Toet
- M. C., Touboul
- A. M., Touchard
- C., Troncon
- M., Van Immerseel
- Ventura, Luigi
- P., Vilain
- J., Wickens
- P., Wright
- T. P., Yiou
- D., Zanello
- L., Zanello
- Zotto, Pierluigi
- Zumerle, Gianni
DOIAbstract
Results are presented on charm meson lifetimes. The sample of charm particle decays was obtained by exposing the high resolution rapid cycling hydrogen bubble chamber (LEBC) coupled with the European Hybrid Spectrometer to \u3c0 12 and p beams at 360 GeV/c ffrom the CERN SPS. The analysis of 3c850 k pictures has yielded 77 events containing a total of 60 charm decays. From these, an unbiased sample of 31 D decays (15\ub1 and 16 D0) is issued in the lifetime analysis. The measured mean lifetimes for D\ub1 and D0 are (where the symbol D0 means D0 and 0):\u3c4(D\ub1)=8.4+3.5 122.2 7 10 1213s\u3c4(D0)=4.1+1.3 120.9 710 1213s. Three unambiguous examples of F\ub1 decay have also been observed and the corresponding lifetime, based on 2 decays, ...
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