Hamzaoui, Chérif et Xing, Zhi-zhong
(1995).
« A simplified approach to determine α and the penguin amplitude in Bd → pipi ».
Physics Letters B, 360(1-2), pp. 131-137.
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Résumé
The effect of inelastic final-state interactions (IFSI's) on the determination of the weak phase α from the isospin triangles of B→ππ is qualitatively illustrated. Neglecting the electroweak penguins and IFSI's and assuming the dominance of the top-quark loop in strong penguin diagrams, we propose an experimentally accessible way to approximately determine α and the penguin amplitude in Bd→ππ. This approach relies on a simplified isospin consideration and the factorization approximation, and its feasibility is irrelevant to the time-dependent measurements of Bd→ππ.