Pathways to a clean gamma (phi3): From B to Super B-factories

Abstract

The implementation of various methods for the determination of gamma through direct CP violation arising in the interference of b->c and b->u processes in charged as well as neutral B meson decays are considered. We show that the inclusion of D0 resulting from D*0-->D0+pi0(gamma) say via B-->KD*0 makes a significant difference in the attainable accuracy for gamma. Both exclusive and inclusive decays of the B+- and B0 to states containing D0/D0-bar followed by both inclusive and exclusive decays of the D0 are discussed. It is shown that with statistics which might be obtained at B factories (5-10 X 10^8 B-pairs) a 1-sigma determination of gamma to about +-5 degrees may be possible depending on the efficiency of reconstruction, backgrounds and the details of the decay amplitudes involved. The role of data from a charm factory as well as effects of D0 mixing are discussed. Extraction of gamma with accuracy that is roughly commensurate with the intrinsic theory error of these methods (i.e. around 0.1%), which is an important goal, will require >10^{10} B-pairs, namely a Super-B Factory.

20 Pages, 10 Figures, a new figure and references added

References in corpus (10)

• Determining $\gamma$ using $B^{\pm }\to D{K}^{\pm }$ with multibody D decays
• Measurement of the CP-Violating Asymmetry Amplitude sin2beta
• Improved Measurement of Mixing-induced CP Violation in the Neutral B Meson System
• Dalitz Analysis of D^0 --> K_S^0 pi+ pi-
• Role of Charm Factory in Extracting CKM-Phase Information via B --> DK
• Measuring $\gamma$ in $B^{\pm }\to K^{\pm }(K{K}^{\ast }{)}_D$ decays
• New, Efficient and Clean Strategies to Explore CP Violation Through Neutral B Decays
• Measuring the Weak Phase gamma in Color Allowed B->DKpi Decays
• A Closer Look at $B_{d,s}\to D{f}_r$ Decays and Novel Avenues to Determine $\gamma$
• Getting beta-alpha without penguins

Cited by in corpus (10)

• B, D and K decays
• New Physics at a Super Flavor Factory
• The Effect of $D-\bar{D}$ Mixing on the Measurement of $\gamma$ in $B\to DK$ Decays
• Study of B+- --> D_CP K+- and D^*_CP K+- decays
• Improved method for CKM constraints in charmless three-body B and B_s decays
• Measurement of Ratios of Branching Fractions and CP-Violating Asymmetries of B -> D*K Decays
• Determining the CKM angle gamma with B_c decays
• Charm Dalitz Plot Analysis Formalism and Results
• alpha ~ pi/2 from supersymmetric spontaneous flavor breaking
• Is the beta phase maximal ?