From approximately 3 million hadronic decays of Z bosons recorded with the aleph detector at lep, a sample of 410 ± 32 View the MathML source candidates is selected, where ℓ is either an electron or a muon. The differential decay rate View the MathML source from this sample is fitted, yielding a value for the product of the CKM matrix element |Vcb| and the normalisation of the decay form factor at the point of zero recoil of the D∗+ meson View the MathML source(ω = 1)|Vcb| = (31.4 ± 2.3stat ± 2.5syst) × 10−3. A value for |Vcb| is extracted using theoretical calculations of the form factor normalisation, with the result |Vcb| = (34.5 ± 2.5stat ± 2.7syst ± 1.5theory) × 10−3. From the integrated s the measured branching fraction is View the MathML source%.

A measurement of |Vcb| from B0 --> D*+- l νl / D Buskulic, D Casper, I De Bonis, D Decamp, P Ghez, C Goy, J.-P Lees, A Lucotte, 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, et al.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 359:(1995), pp. 236-248. [10.1016/0370-2693(95)01021-H]

A measurement of |Vcb| from B0 --> D*+- l νl

FOCARDI, ETTORE;CIULLI, VITALIANO;
1995

Abstract

From approximately 3 million hadronic decays of Z bosons recorded with the aleph detector at lep, a sample of 410 ± 32 View the MathML source candidates is selected, where ℓ is either an electron or a muon. The differential decay rate View the MathML source from this sample is fitted, yielding a value for the product of the CKM matrix element |Vcb| and the normalisation of the decay form factor at the point of zero recoil of the D∗+ meson View the MathML source(ω = 1)|Vcb| = (31.4 ± 2.3stat ± 2.5syst) × 10−3. A value for |Vcb| is extracted using theoretical calculations of the form factor normalisation, with the result |Vcb| = (34.5 ± 2.5stat ± 2.7syst ± 1.5theory) × 10−3. From the integrated s the measured branching fraction is View the MathML source%.
1995
359
236
248
D Buskulic;D Casper;I De Bonis;D Decamp;P Ghez;C Goy;J.-P Lees;A Lucotte;M.-N Minard;P Odier;B Pietrzyk;F Ariztizabal;M Chmeissani;J.M C...espandi
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Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/638492
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