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We present measurements of the branching fractions and charge asymmetries ofB decays to all D(*)D(*) modes. Using 232 million BBbar pairs recorded on theUpsilon(4S) resonance by the BaBar detector at the e+e- asymmetric B factoryPEP-II at the Stanford Linear Accelerator Center, we measure the branchingfractions BF(B0 -> D*+D*-) = (8.1 +- 0.6 +- 1.0) x 10^-4, BF(B0 -> D*+-D-+) =(5.7 +- 0.7 +- 0.7) x 10^-4, BF(B0 -> D+D-) = (2.8 +- 0.4 +- 0.5) x 10^-4,BF(B+ -> D*+D*0) = (8.1 +- 1.2 +- 1.2) x 10^-4, BF(B+ -> D*+D0) = (3.6 +- 0.5+- 0.4) x 10^-4, BF(B+ -> D+D*0) = (6.3 +- 1.4 +- 1.0) x 10^-4, and BF(B+ ->D+D0) = (3.8 +- 0.6 +- 0.5) x 10^-4, where in each case the first uncertaintyis statistical and the second systematic. We also determine the limits BF(B0 ->D*0D*0) < 0.9 x 10^-4, BF(B0 -> D*0D0) < 2.9 x 10^-4, and BF(B0 -> D0D0) < 0.6x 10^-4, each at 90% confidence level. All decays above denote either member ofa charge conjugate pair. We also determine the CP-violating charge asymmetriesA(B0 -> D*+-D-+) = 0.03 +- 0.10 +- 0.02, A(B+ -> D*+D*0) = -0.15 +- 0.11 +-0.02, A(B+ -> D*+D0) = -0.06 +- 0.13 +- 0.02, A(B+ -> D*+D*0) = 0.13 +- 0.18 +-0.04, and A(B+ -> D+D0) = -0.13 +- 0.14 +- 0.02. Additionally, when we combinethese results with information from time-dependent CP asymmetries in B0 ->D*+D*- decays and world-averaged branching fractions of B decays to Ds(*)D(*)modes, we find the CKM phase gamma is favored to lie in the range [0.07-2.77]radians (with a +0 or +pi radians ambiguity) at 68% confidence level.Comment: 23 pages, 6 postscript figues, submitted to Phys. Rev.

physical review. d. particles, fields, gravitation, and cosmology/physical review. d, particles, fields, gravitation, and cosmology

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Measurement of branching fractions andCP-violating charge asymmetries forB-meson decays toD(*