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most citedEstimate of BR(B -> X_s gamma) at O(alpha_s^2)

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math.AG2004

Resolving G-torsors by abelian base extensions

V. Chernousov, Ph. Gille, Z. Reichstein

Let G be a linear algebraic group defined over a field k. We prove that, under mild assumptions on k and G, there exists a finite k-subgroup S of G such that the natural map H^1(K,…