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Article
Report number hep-ex/0201024 ; CERN-EP-2002-001 ; CERN-EP-2002-001
Title Leptonic decays of the Ds meson
Related titleDYSON-SCHWINGER
Author(s) ALEPH Collaboration  ყველა 281 ავტორის ჩვენება
Affiliation (CERN)
Publication 2002
Imprint 8 Jan 2002
Number of pages 27
Series (ALEPH Papers)
Note 23 pages, 10 figures Report-no: CERN-EP/2002-001
In: Phys. Lett. B 528 (2002) 1-18
DOI 10.1016/S0370-2693(02)01212-1
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LEP ; ALEPH
Abstract The purely leptonic decays Ds -> tau nu and Ds -> mu nu 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 Ds -> tau nu decays with tau -> e nu nubar or mu nu nubar, and the other optimized for Ds-> mu nu decays. The results are used to evaluate the Ds decay constant, within the Standard Model: fDs = [285 +- 19(stat) +- 40 (syst)] MeV.
Copyright/License Elsevier Science B.V.
Preprint: (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: valerie.brunner@cern.ch


 ჩანაწერი შექმნილია 2002-01-15, ბოლოს შესწორებულია 2024-08-24


სრული ტექსტი:
arXiv:hep-ex_0201024 - სრული ტექსტის ჩამოტვირთვაPDF
ep-2002-001 - სრული ტექსტის ჩამოტვირთვაPDF
გარე ბმული:
სრული ტექსტის ჩამოტვირთვაPreprint
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