Anomalous dimensions of four-quark operators in the large N_f limit

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dc.creatorPott, N.
dc.date1997-10-28
dc.date.accessioned2026-07-07T04:02:44Z
dc.date.available2026-07-07T04:02:44Z
dc.descriptionThe anomalous dimensions of four-quark operators $(\bar q_i q_j)_{V-A} (\bar q_k q_l)_{V-A}$ are calculated in the large $N_f$ limit. As expected, the result is a convergent series without renormalon ambiguities. Using the approximation of "Naive Nonabelianization", an additional all-order contribution to the anomalous dimension matrix is obtained which is somewhat larger than the exact NLO correction itself. Possible phenomenological applications in nonleptonic B decays and $B^0 - \bar B^0$ mixing are briefly considered.
dc.description17 pages, LaTex, two figures
dc.identifierhttps://arxiv.org/abs/hep-ph/9710503
dc.identifierhttp://arxiv.org/abs/hep-ph/9710503
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/47354
dc.subjectHigh Energy Physics - Phenomenology
dc.titleAnomalous dimensions of four-quark operators in the large N_f limit
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