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We have calculated inclusive direct CP-asymmetries for charmless B^{+/-}-decays. After summing large logarithms to all orders the CP-asymmetries inDelta S=0 and Delta S=1 decays are found as  a_{CP} (Delta S=0) = (2.0 +1.2/-1.0)%  and  a_{CP} (Delta S=1) = ( -1.0 +/- 0.5)%.  These results are much larger than previous estimates based on a work withoutsummation of large logarithms. We further show that the dominant contributionto a_{CP} (\Delta S=0 ) is proportional to (sin gamma) times |V_{cb}/V_{ub}|.The constraints on the apex (rho-bar,eta-bar) of the unitarity triangleobtained from these two CP-asymmetries define circles in the(rho-bar,eta-bar)-plane. We have likewise analyzed the information on theunitarity triangle obtainable from a measurement of the average non-leptonicbranching ratios Br(Delta S=0), Br(Delta S=1) and their sum Br_{NL} (B --> nocharm). These CP-conserving quantities define circles centered on therho-bar--axis of the (rho-bar,eta-bar)-plane. We expect a determination of|V_{ub}/V_{cb}| from Br_{NL} (B --> no charm) to be promising. Our resultscontain some new QCD corrections enhancing Br(Delta S=1), which now exceedsBr(Delta S=0) by roughly a factor of two.Comment: formula for Br(B->no charm) on p.12 corrected, to appear in Phys.  Rev.

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

Determination of the CKM angle γ and<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>|</mml:mi><mml:mrow><mml:msub><mml:mrow><mml:mi>V</mml:mi></mml:mrow><mml:mrow><mml:mi>ub</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mrow><mml:msub><mml:mrow><mml:mo>/</mml:mo><mml:mi>V</mml:mi></mml:mrow><mml:mrow><mml:mi>cb</mml:mi></mml:mrow></mml:msub></mml:mrow><mml:mi>|</mml:mi></mml:math>from inclusive direct<i>CP</i>asymmetries and branching ratios in charmless<i>B</i…

Determination of the CKM angle γ and|Vub/Vcb|from inclusive directCPasymmetries and branching ratios in charmlessB