Extracting CP violation and strong phase in D decays by using quantum correlations in psi(3770)-> D0\bar{D}0 -> (V1V2)(V3V4) and psi(3770)->D0\bar{D}0 -> (V1V2)(K pi)

Abstract

The charm quark offers interesting opportunities to cross-check the mechanism of CP violation precisely tested in the strange and beauty sectors. In this paper, we exploit the angular and quantum correlations in the D\bar{D} pairs produced through the decay of the psi(3770) resonance in a charm factory to investigate CP-violation in two different ways. We build CP-violating observables in psi(3770) -> D\bar{D} -> (V_1V_2)(V_3 V_4) to isolate specific New Physics effects in the charm sector. We also consider the case of psi(3770) -> D\bar{D} -> (V_1V_2)(Kπ) decays, which provide a new way to measure the strong phase difference delta between Cabibbo-favored and doubly-Cabibbo suppressed D decays required in the determination of the CKM angle gamma. Neglecting the systematics, we give a first rough estimate of the sensitivities of these measurements at BES-III with an integrated luminosity of 20 fb^-1 at psi(3770) peak and at a future Super tau-charm factory with a luminosity of 10^35 cm^-2.s^-1.

13 pages.

References in corpus (13)

• Evidence for D0-anti-D0 Mixing
• The Unitarity Triangle Fit in the Standard Model and Hadronic Parameters from Lattice QCD: A Reappraisal after the Measurements of Delta m_s and BR(B to tau nu)
• Implications of D^0-\bar D^0 Mixing for New Physics
• Charm Meson Decays
• Accumulating evidence for nonstandard leptonic decays of D_s mesons
• Measurement of B(Ds+ -->ell+ nu) and the Decay Constant fDs From 600/pb of e+e- Annihilation Data Near 4170 MeV
• Measurement of B(Ds -> munu)
• Determination of the D0 -> K+pi- Relative Strong Phase Using Quantum-Correlated Measurements in e+e- -> D0 D0bar at CLEO
• Determination of the Strong Phase in D0 -> K+pi- Using Quantum-Correlated Measurements
• D^0-D^0bar mixing in Υ(1S) \to D^0 D^0bar decay at Super-B
• D0barD0 Quantum Correlations, Mixing, and Strong Phases
• Strong Phase and $D^0-D^{0}bar$ mixing at BES-III
• On the Case for a Super Tau-Charm Factory

Cited by in corpus (8)

• Study of the Standard Model with weak decays of charmed hadrons at BESIII
• $P$-wave coupled-channel scattering of $B_s\pi ,B_s^{\ast }\pi ,B\overline{K},B^{\ast }\overline{K}$ and the puzzling $X(5568)$
• Study of CP violation in ${\Lambda }_c^{+}$ decay
• Measurement of absolute branching fraction of the inclusive decay ${\Lambda }_c^{+}\to \Lambda +X$
• Prospects for CP & P violation in ${\Lambda }_c^{+}$ decay at STCF
• Measurements of the absolute branching fractions of $D^{0(+)}\to K\bar{K}\pi \pi$ decays
• First measurement of polarizations in the decay $D^0\to \omega \varphi$
• Novel correlated $D^0\overline{D}{}^0$ systems for $c/b$ physics and tests of $T/CPT$