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Strange quark mass from the invariant mass distribution of Cabibbo-suppressed tau decays

AutorChen, Shaomin; Davier, Michel; Gámiz, Elvira; Höcker, Andreas; Pich, Antonio ; Prades, Joaquim
Fecha de publicaciónnov-2001
EditorSpringer
CitaciónEuropean Physical Journal C - Particles and Fields 22(1): 31-38 (2001)
ResumenQuark mass corrections to the hadronic width play a significant role only for the strange quark. The complete determination of decays into strange hadronic final states performed by ALEPH allows the extraction of the strange spectral function. New results on strange decay modes from other experiments are also incorporated into the present analysis. Using as input moments of the spectral function the analysis leading to the determination of is conducted using reasonable theoretical constraints on the nonperturbative components. Careful attention is paid to the treatment of the perturbative expansions of the moments which exhibit convergence problems. The result obtained, , is stable over the scale from down to about 2 GeV. Its evolution yields and .
Descripción8 páginas, 4 figuras, 4 tablas.-- arXiv:hep-ph/0105253v1
Versión del editorhttp://dx.doi.org/10.1007/s100520100791
URIhttp://hdl.handle.net/10261/33162
DOI10.1007/s100520100791
ISSN1434-6044
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