Constraints on Unparticle Interactions from Particle and Antiparticle Oscillations

Abstract

We study unparticle effects on particle and antiparticle osillations in meson-antimeson, and muonium-antimuonium systems. Unlike usual tree level contributions to meson oscillations from heavy particle exchange with small ${\Gamma }_{12}$, the unparticle may have sizeable contributions to both $M_{12}$ and ${\Gamma }_{12}$ due to fractional dimension $d_\U$ of the unparticle. We find that very stringent constraints on the unparticle and particle interactions can be obtained. If unparticle effect dominates the contributions (which may happen in $D^0-{\bar{D}}^0$ mixing) to meson mixing parameters $x$ and $y$, we find that $x/y =\cot(πd_\U)$. Interesting constraints on unparticle and particle interactions can also be obtained using muonion and antimuonion oscillation data. We also comment on unparticle effects on CP violation in meson oscillations.

14 pages, 4 figures

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Cited by in corpus (13)

• Anatomy of New Physics in B-Bbar mixing
• Interpretation of the "$f_{D_s}$ puzzle" in SM and beyond
• Unparticle-Induced Lepton Flavor Violating Decays τ^- ->l^- (V^0, ~P^0)
• Implications of the measurements of B_s - B_s bar mixing on SUSY models
• Lepton flavor violation decays of vector mesons in unparticle physics
• Unparticle contributions to $\Bs$-$\Bsbar$ mixing
• Large Dimuon Asymmetry In Bs-bar B_s Mixing From Unparticle Indced Gamma^{12}_s
• The decay rate of $\psi (2S)$ to ${\Lambda }_c+\overline{{\Sigma }^{+}}$ in SM and beyond
• Constraints on Unparticles from $B_s\to {\mu }^{+}{\mu }^{-}$
• $R(K^{(\ast )})$ with vector unparticles
• On the difference of time-integrated $CP$ asymmetries in $D^0\to K^{+}{K}^{-}$ and $D^0\to {\pi }^{+}{\pi }^{-}$ decays: unparticle physics contribution
• Constraining unparticle physics from $CP$ violation in Cabibbo-favored decays of D mesons
• Searching for New Physics in $D^0\to {\mu }^{+}{\mu }^{-},e^{+}{e}^{-},{\mu }^{\pm }{e}^{\mp }$ at BES and/or Super Charm-Tau Factory