A Method to Measure cos(2beta) Using Time-Dependent Dalitz Plot Analysis of B0 -> D_CP pi+ pi-

Abstract

We present a feasibility study of a method to measure the cosine of twice the CKM Unitarity Triangle angle beta using a time-dependent Dalitz plot analysis of B0 -> D pi+ pi- decays, where the neutral D meson is reconstructed in decays to CP eigenstates. We show that this method can be used at the B factories to make a measurement of cos(2beta) that is competitive with, or more precise than, other techniques using different quark-level transitions, while sin(2beta) can be measured to an accuracy more precise than any existing measurement using b -> c ubar d transitions. Furthermore, this technique has great potential to be employed at LHCb.

22 pages, 9 figures, 3 tables. v3: Minor changes to the text and some figures following suggestions from journal referees

References in corpus (5)

• Flavour physics of leptons and dipole moments
• Collider aspects of flavour physics at high Q
• Study of $\overline{B^0}\to D^0{\pi }^{+}{\pi }^{-}$ decays
• On the Physics Case of a Super Flavour Factory
• Search for \bar{B}^0\toΛ_c^+\barΛ_c^- decay at Belle

Cited by in corpus (2)

• On the Measurement of the Unitarity Triangle Angle gamma from B^0 -> DK^{*0} Decays
• The Matrix of Unitarity Triangle Angles for Quarks