The purely leptonic decays D-s --> iotav and D-s --> muv are studied in a sample of four million hadronic Z decays collected with the ALEPH detector at the LEP e(+)e(-) collider from 1991 to 1995. The branching fractions are extracted from a combination of two analyses, one optimized to select D-s --> iotav decays with iota --> ev (v) over bar or muv (v) over bar, and the other optimized for D-s --> muv decays. The results are used to evaluate the D-s decay constant, within the Standard Model: f(Ds) = [285 +/- 19(stat) +/- 40(syst)] MeV. (C) 2002 Elsevier Science B.V. All rights reserved.

Leptonic decays of the D-s meson / Heister, A., Schael, S., Barate, R., De Bonis, I., Decamp, D., Goy, C., Lees, J.-P., Merle, E., Minard, M.-N., Pietrzyk, B., Boix, G., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, Ll., Graugés, E., Martinez, M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 528:1-2(2002), pp. 1-18. [10.1016/S0370-2693(02)01212-1]

Leptonic decays of the D-s meson

Creanza, D.;Iaselli, G.;Maggi, G.;
2002

Abstract

The purely leptonic decays D-s --> iotav and D-s --> muv are studied in a sample of four million hadronic Z decays collected with the ALEPH detector at the LEP e(+)e(-) collider from 1991 to 1995. The branching fractions are extracted from a combination of two analyses, one optimized to select D-s --> iotav decays with iota --> ev (v) over bar or muv (v) over bar, and the other optimized for D-s --> muv decays. The results are used to evaluate the D-s decay constant, within the Standard Model: f(Ds) = [285 +/- 19(stat) +/- 40(syst)] MeV. (C) 2002 Elsevier Science B.V. All rights reserved.
2002
https://www.sciencedirect.com/science/article/abs/pii/S0370269302012121?via%3Dihub
Leptonic decays of the D-s meson / Heister, A., Schael, S., Barate, R., De Bonis, I., Decamp, D., Goy, C., Lees, J.-P., Merle, E., Minard, M.-N., Pietrzyk, B., Boix, G., Bravo, S., Casado, M.P., Chmeissani, M., Crespo, J.M., Fernandez, E., Fernandez-Bosman, M., Garrido, Ll., Graugés, E., Martinez, M., et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - STAMPA. - 528:1-2(2002), pp. 1-18. [10.1016/S0370-2693(02)01212-1]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11589/7198
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