Measurement of the lifetime of neutral charmed mesons

Measurement of the lifetime of neutral charmed mesons

The lifetime of neutral charmed particles photoproduced in emulsion has been measured. The lifetime value presented here was obtained from a sample of 22D 0 mesons, 18 of which have their charmed partner seen in emulsion. The sample is essentially background-free. The result obtained is τ D 0=(2.11...

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Veröffentlicht in:Physics letters. B 1984-01, Vol.140 (1), p.123-126
Hauptverfasser: Adamovich, M.I., Alexandrov, Y.A., Bravo, L., Cartacci, A.M., Castillo, V., Chernyavski, M.M., Conti, A., Dagliana, M.G., Dameri, M., Diambrini-Palazzi, G., di Caporiacco, G., Forino, A., Gerassimov, S.G., Gessaroli, R., Higon, E., Kharlamov, S.P., Larioniva, V.G., Llosa, R., Lory, J., Marchionni, A., Manjeley, N.G., Martinez, J., Monteleoni-Conforto, B., Niembro, R., Orlova, G.I., Osculati, B., Parrini, G., Quareni-Vignudelli, A., Romanovskaya, K.M., Ruiz, A., Salmanova, N.A., Sanchis, M.A., Schune, D., Shtarkov, L.N., Senent, F., Tentido, S., Tomasini, G., Tretyakova, M.I., Tsai, Chu, Vanderhaeghe, G., Viaggi, F., Villar, E., Willot, B.
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Sprache:eng
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Zusammenfassung:The lifetime of neutral charmed particles photoproduced in emulsion has been measured. The lifetime value presented here was obtained from a sample of 22D 0 mesons, 18 of which have their charmed partner seen in emulsion. The sample is essentially background-free. The result obtained is τ D 0=(2.11 +1.21 -0.63 )×10 13s The D 0 mass derived from 8 3C events is m D 0 = 1856 ± 36 MeV/ c 2.
ISSN:0370-2693
1873-2445
DOI:10.1016/0370-2693(84)91061-X