Unparticles at heavy flavour scales: CP violating phenomena

Abstract

Coupling the scale invariant unparticle sector to flavour physics and assuming that it remains scale invariant we investigate its consequences in heavy flavour physics. A drastic feature of unparticle physics is an unusual phase leading to novel CP violating phenomena. We consider the CP asymmetry in the leptonic decay B^+ -> tau^+ nu and the hadronic decay B_d -> D^+D^-, taking into account constraints of branching ratios and time dependent CP asymmetries. Generic plots are shown and it turns out that there exist parameters for which the CP violation is maximal. A prediction of a large CP asymmetry in B_d -> D^+D^- is difficult to achieve in other models without contradicting the current data in other channels. The prediction of a CP asymmetry in leptonic decays, such as B^+ -> tau^+ nu, is novel. We identify the CP compensating mode due to the unparticles and show explicitly that it exactly cancels the CP asymmetry of B^+ -> tau^+ nu as demanded by CPT invariance. Building up on earlier works we investigate the breaking of scale invaricance, due to the coupling to the Higgs and the size of the effects in the weak sector resorting to a dimensional analysis. An enhancement is observed on the grounds of the relevance of the unparticle interaction operator as compared to the weak four-Fermi term.

33 pages, 9 figures

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Cited by in corpus (35)

• The Physics of the B Factories
• Supersymmetry Inspired QCD Beta Function
• Conformal Windows of SU(N) Gauge Theories, Higher Dimensional Representations and The Size of The Unparticle World
• Precision Measurement of B(D+ -> mu+ nu) and the Pseudoscalar Decay Constant fD+
• Unparticle physics effects in B_s mixing
• Unparticles-Higgs Interplay
• New Physics at a Super Flavor Factory
• Unparticle & Higgs as Composites
• SUSY Unparticle and Conformal Sequestering
• Interpretation of the "$f_{D_s}$ puzzle" in SM and beyond
• Enhancement of charm CP violation due to nearby resonances
• Unraveling unparticles through violation of atomic parity and rare beauty
• Unparticle physics at the photon collider
• Cosmological Constraints on Unparticles as Continuous Mass Scalars
• Measurements of time-dependent CP asymmetries in B0 --> D(*)+D(*)- decays
• Test of unparticle long range forces from perihelion precession of Mercury
• Direct CP violation of $B\to l\nu$ in unparticle physics
• Unparticle Physics and A_{FB}^b on the Z pole
• W-pair production in Unparticle Physics
• The large CP phase in B(s) - anti-B(s) mixing and Unparticle Physics
• Unparticle physics with broken scale invariance
• Effects of Unparticles on Running of Gauge Couplings
• Higgs Boson Decays into Single Photon plus Unparticle
• Top off the unparticle
• Unparticles and CP-violation
• Unparticle Effects on Unitarity Constraints from Higgs Boson Scattering
• Measurement of the Time-Dependent CP Asymmetry of Partially Reconstructed B0->D*+D*- Decays
• Studying Double Charm Decays of B_{u,d} and B_{s} Mesons in the MSSM with R-parity Violation
• Search for TeV Scale Physics in Heavy Flavour Decays
• The double charm decays of B Mesons in the mSUGRA model
• Constraints on Unparticles from $B_s\to {\mu }^{+}{\mu }^{-}$
• The large CP phase in B(s)-anti-B(s) mixing from primary scalar unparticles
• Lepton flavor violating Higgs decays and unparticle physics
• On the difference of time-integrated $CP$ asymmetries in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays: unparticle physics contribution
• On Unparticles and K+ to pi+ Missing Energy