Extracting short distance information from b -> s l+ l- effectively

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dc.creatorLee, Keith S. M.
dc.creatorLigeti, Zoltan
dc.creatorStewart, Iain W.
dc.creatorTackmann, Frank J.
dc.date2006-12-13
dc.date2007-02-16
dc.date.accessioned2026-07-07T11:43:44Z
dc.date.available2026-07-07T11:43:44Z
dc.descriptionWe point out that in inclusive B -> Xs l+ l- decay an angular decomposition provides a third (q^2 dependent) observable sensitive to a different combination of Wilson coefficients than the rate and the forward-backward asymmetry. Since a precise measurement of q^2 dependence requires large data sets, it is important to consider the data integrated over regions of q^2. We develop a strategy to extract all measurable Wilson coefficients in B -> Xs l+ l- from a few simple integrated rates in the low q^2 region. A similar decomposition in B -> K* l+ l-, together with the B -> K* γrate, also provides a determination of the Wilson coefficients, without reliance on form factor models and without having to measure the zero of the forward-backward asymmetry.
dc.description13 pages, 3 figures, v2: minor improvements in text, references added, v3: journal version
dc.identifierhttps://arxiv.org/abs/hep-ph/0612156
dc.identifierhttp://arxiv.org/abs/hep-ph/0612156
dc.identifierPhys.Rev.D75:034016,2007
dc.identifierdoi:10.1103/PhysRevD.75.034016
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/201345
dc.subjectHigh Energy Physics - Phenomenology
dc.subjectHigh Energy Physics - Experiment
dc.titleExtracting short distance information from b -> s l+ l- effectively
dc.typetext

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