D ∗→Dπ and D ∗→Dγ decays: axial coupling and magnetic moment of D ∗ meson Damir Bećirević and Benjamin Haas Eur. Phys. J. C, 71 8 (2011) 1734 Published online: 31 August 2011 DOI: 10.1140/epjc/s10052-011-1734-y