Corrections to Moments of the Photon Spectrum in the Inclusive Decay B \to X_s γ

Details Corrections to Moments of the Photon Spectrum in the Inclusive Decay B \to X_s γ Corrections to Moments of the Photon Spectrum in the Inclusive Decay B \to X_s γ

1997-10-29

arxiv.org/abs/hep-ph/9710513v3

Phys.Rev. D57 (1998) 5611-5619; Erratum-ibid. D60 (1999) 099907

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 6 figures, revtex, changes to analytical results, conclusions unchanged, submitted as an Erratum to Phys.Rev. D

Scientific paper

10.1103/PhysRevD.60.099907

We investigate the two main uncertainties on the extraction of the nonperturbative matrix elements $\bar{\Lambda}$ and $\lambda_1$ from moments of the inclusive rare FCNC decay $B \to X_s \gamma$. The first one is due to unknown matrix elements of higher dimensional operators which are estimated by varying the matrix elements in a range as suggested by dimensional analysis. The effect of these terms is found to be small. A second uncertainty arises from a cut on the photon energy and we give model independent bounds on these uncertainties as well as their estimates from a simplified version of the ACCMM model.

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