K0 production in one-prong τ decays

D. Buskulic, D. Casper, I. De Bonis, D. Decamp, P. Ghez, C. Goy, J. P. Lees, M. N. Minard, P. Odier, B. Pietrzyk, F. Ariztizabal, M. Chmeissani, J. M. Crespo, I. Efthymiopoulos, E. Fernandez, M. Fernandez-Bosman, V. Gaitan, Ll Garrido, M. Martinez, T. MattisonS. Orteu, A. Pacheco, C. Padilla, A. Pascual, F. Teubert, D. Creanza, M. de Palma, A. Farilla, G. Iaselli, G. Maggi, N. Marinelli, S. Natali, S. Nuzzo, A. Ranieri, G. Raso, F. Romano, F. Ruggieri, G. Selvaggi, L. Silvestris, P. Tempesta, G. Zito, Y. Chai, D. Huang, X. Huang, J. Lin, T. Wang, Y. Xie, D. Xu, R. Xu, J. Zhang, L. Zhang, W. Zhao, E. Blucher, G. Bonvicini, J. Boudreau, P. Comas, P. Coyle, H. Drevermann, R. W. Forty, G. Ganis, C. Gay, M. Girone, R. Hagelberg, J. Harvey, R. Jacobsen, B. Jost, J. Knobloch, I. Lehraus, M. Maggi, C. Markou, P. Mato, H. Meinhard, A. Minten, R. Miquel, P. Palazzi, J. R. Pater, J. A. Perlas, P. Perrodo, J. F. Pusztaszeri, F. Ranjard, L. Rolandi, J. Rothberg, T. Ruan, M. Saich, D. Schlatter, M. Schmelling, F. Sefkow, W. Tejessy, I. R. Tomalin, R. Veenhof, H. Wachsmuth, S. Wasserbaech, W. Wiedenmann, T. Wildish, W. Witzeling, J. Wotschack, Z. Ajaltouni, M. Bardadin-Otwinowska, A. Barres, C. Boyer

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20 Citations (Scopus)


From a sample of about 75000 τ decays identified with the ALEPH detector, K0 production in 1-prong hadronic decays is investigated by tagging the KL0 component in a hadronic calorimeter. Results are given for the final states ντh-K0 and ντh-π0K0 where the h- is separated into π and K contributions by means of the dE/dx measurement in in the central detector. The resulting branching ratios are: (Bτ → ντπ-K0) = (0.88±0.14±0.09)%, (Bτ → ντK-K0) = (0.29±0.12±0.03)%, (Bτ → ντπ-π0K0) = (0.33±0.14±0.07)% aand (Bτ → ντK-π0K0) = (0.05±0.05±0.01)%. The K* decay rate in the K0π channel agrees with that in the Kπ0 mode: the combined value for the branching ratio is (Bτ → ντK*-) = (1.45±0.13±0.11)%. © 1994.
Original languageEnglish
Pages (from-to)219-227
JournalPhysics Letters B
Issue number1-2
Publication statusPublished - 14 Jul 1994


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