CP Violation in D0 - anti-D0 Oscillations: General Considerations and Applications to the Littlest Higgs Model with T-Parity

Abstract

The observed D0 - anti-D0 oscillations provide a new stage in our search for New Physics in heavy flavour dynamics. The theoretical verdict on the observed values of x_D and y_D remains ambiguous: while they could be totally generated by Standard Model dynamics, they could also contain a sizable or even leading contribution from New Physics. Those oscillations are likely to enhance the observability of CP violation as clear manifestations of New Physics. We present general formulae for D0 - anti-D0 oscillations, concentrating on the case of negligible direct CP violation. In particular we derive a general formula for the time-dependent mixing-induced CP asymmetry in decays to a CP eigenstate and its correlation with the semileptonic CP asymmetry a_SL(D0) in D0(t) -> l nu K. We apply our formalism to the Littlest Higgs model with T-parity, using the time-dependent CP asymmetry in D -> K_S phi as an example. We find observable effects at a level well beyond anything possible with CKM dynamics. Comparisons with CP violation in the K and B systems offer an excellent test of this scenario and reveal the specific pattern of flavour and CP violation in the D0 - anti-D0 system predicted by this model. We discuss a number of charm decays that could potentially offer an insight in the dynamics of CP violation in D decays. We also apply our formalism to B_s - anti-B_s mixing.

26 pages, 9 png figures, 1 table. v2: eq. (A.1) corrected, minor clarifying comments and few references added. v3: typos corrected, matches published version

References in corpus (10)

• Delta F=2 Observables and Fine-Tuning in a Warped Extra Dimension with Custodial Protection
• Measurement of $\boldmath {B_s^0}$ mixing parameters from the flavor-tagged decay
• Rare K and B Decays in a Warped Extra Dimension with Custodial Protection
• Combining K-\bar K mixing and D-\bar D mixing to constrain the flavor structure of new physics
• Another Look at the Flavour Structure of the Littlest Higgs Model with T-Parity
• Testing New Indirect CP Violation
• Precise limits from lepton flavour violating processes on the Littlest Higgs model with T-parity
• FCNC Processes in the Littlest Higgs Model with T-Parity: an Update
• On the flavor structure of the littlest Higgs model
• Could Charm's "Third Time" Be the Real Charm? -- A Manifesto

Cited by in corpus (37)

• Evidence for CP violation in time-integrated D0 -> h-h+ decay rates
• Flavor Physics in the Randall-Sundrum Model: II. Tree-Level Weak-Interaction Processes
• Quark flavour observables in the Littlest Higgs model with T-parity after LHC Run 1
• On a CP Anisotropy Measurement in the Dalitz Plot
• On Indirect CP Violation and Implications for D0-\overline{D0} and Bs -\overline{Bs} mixing
• On $D\to X_u{l}^{+}{l}^{-}$ within the Standard Model and Frameworks like the Littlest Higgs Model with T Parity
• Unanswered Questions in the Electroweak Theory
• New Physics Models of Direct CP Violation in Charm Decays
• Lessons from Recent Measurements of D-\bar D Mixing
• Conclusions from CDF Results on CP Violation in D^0 \to π^+π^-, K^+K^- and Future Tasks
• The Hunt for New Physics in the Flavour Sector with up vector-like quarks
• FCNC Processes in the Littlest Higgs Model with T-Parity: an Update
• A simple relation for B_s-mixing
• On CP Asymmetries in Two-, Three- and Four-Body D Decays
• Light Colored Scalar as Messenger of Up-Quark Flavor Dynamics in Grand Unified Theories
• Constraining the mixing matrix for Standard Model with four generations: time dependent and semi-leptonic CP asymmetries in $B_d^0$, $B_s$ and $D^0$
• Manifestations of Warped Extra Dimension in Rare Charm Decays and Asymmetries
• D^0 -> gamma gamma and D^0 -> mu^+ mu^- Rates on an Unlikely Impact of the Littlest Higgs Model with T-Parity
• Flavour Theory: 2009
• The Impact of a 4th Generation on Mixing and CP Violation in the Charm System
• A Lower Bound on hadronic EDMs from CP Violation in D0-D0bar mixing in SUSY Alignment Models
• Covariant Description of Flavor Conversion in the LHC Era
• Dileptonic signatures of T-odd quarks at the LHC
• TASI 2009 Lectures - Flavor Physics
• Testing the CKM Picture of Flavour and CP Violation in Rare K and B Decays and Particle-Antiparticle Mixing
• Flavor changing top quark decay and bottom-strange production in the littlest Higgs model with T-parity
• Physics Opportunities at the Next Generation of Precision Flavor Physics
• No Pain, No Gain -- On the Challenges and Promises of Charm Studies
• Nonuniversality of indirect CP asymmetries in $D\to \pi \pi ,KK$ decays
• The anomalous top quark coupling tqg and tW production at the LHC
• CP Violation Tests of Alignment Models at LHCII
• Renaissance of the ~1 TeV Fixed-Target Program
• Emergent 2HDM in LSS Little-Higgs: Musings from Flavor and Electroweak Physics
• Flavour Physics in the Littlest Higgs Model with T-Parity: Effects in the K, B_d/s and D systems
• Impact of Lattice QCD on CKM Phenomenology
• Review on D0-antiD0 mixing
• Theory overview of charm physics