2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/37927We determine the b-quark shape function parameters in the shape function scheme, m_b(SF) and μ_π^2(SF), using the Belle B->X_s gamma photon energy spectrum. We assume three models for the form of the shape function; exponential, gaussian and hyperbolic.of the Belle Collaboration for the Heavy Flavor Averaging Group, 7 pages, 4 figuresHigh Energy Physics - Experimenttext