From a sample of about 75000 tau decays identified with the ALEPH detector, K0 production in 1-prong hadronic decays is investigated by tagging the K(L)0 component in a hadronic calorimeter. Results are given for the final states nu(tau)h-K0 and nu(tau)h-pi0K0 where the h- is separated into pi and K contributions by means of the dE/dx measurement in the central detector. The resulting branching ratios are: (B(tau) --> nu(tau)pi-K0) = (0.88 +/- 0.14 +/- 0.09)%, (B(tau) --> nu(tau)K-K0) = (0.29 +/- 0.12 +/- 0.03)%, (Btau --> nu(tau)pi-pi0K0) = (0.33 +/- 0.14 +/- 0.07)% and (B(tau) --> nu(tau)K-pi0K0) = (0.05 +/- 0.05 +/- 0.01)%. The K* decay rate in the K0pi channel agrees with that in the Kpi0 mode: the combined value for the branching ratio is (Btau --> nu(tau)K*-) = (1.45 +/- 0.13 +/- 0.11)%.

K(0) Production In One-prong Tau-decays / Focardi, E., Casper, D., Debonis, I., Decamp, D., Ghez, P., Goy, C., Lees, J.P., Minard, M.N., Odier, P., Pietrzyk, B., Ariztizabal, F., Chmeissani, M., Crespo, J.M., Efthymiopoulos, I., Fernandez, E., Fernandezbosman, M., Gaitan, V., Garrido, L., Martinez, M., Mattison, T., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 332:(1994), pp. 219-227. [10.1016/0370-2693(94)90882-6]

K(0) Production In One-prong Tau-decays

FOCARDI, ETTORE;CIULLI, VITALIANO;
1994

Abstract

From a sample of about 75000 tau decays identified with the ALEPH detector, K0 production in 1-prong hadronic decays is investigated by tagging the K(L)0 component in a hadronic calorimeter. Results are given for the final states nu(tau)h-K0 and nu(tau)h-pi0K0 where the h- is separated into pi and K contributions by means of the dE/dx measurement in the central detector. The resulting branching ratios are: (B(tau) --> nu(tau)pi-K0) = (0.88 +/- 0.14 +/- 0.09)%, (B(tau) --> nu(tau)K-K0) = (0.29 +/- 0.12 +/- 0.03)%, (Btau --> nu(tau)pi-pi0K0) = (0.33 +/- 0.14 +/- 0.07)% and (B(tau) --> nu(tau)K-pi0K0) = (0.05 +/- 0.05 +/- 0.01)%. The K* decay rate in the K0pi channel agrees with that in the Kpi0 mode: the combined value for the branching ratio is (Btau --> nu(tau)K*-) = (1.45 +/- 0.13 +/- 0.11)%.
1994
332
219
227
Focardi, Ettore; Casper, D.; Debonis, I.; Decamp, D.; Ghez, P.; Goy, C.; Lees, J. P.; Minard, M. N.; Odier, P.; Pietrzyk, B.; Ariztizabal, F.; Chmeiss...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/770614
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 20
  • ???jsp.display-item.citation.isi??? 19
social impact