A consistent picture for large penguins in D -> pi+ pi-, K+ K-

Abstract

A long-standing puzzle in charm physics is the large difference between the D0 -> K+ K- and D0 -> pi+ pi- decay rates. Recently, the LHCb and CDF collaborations reported a surprisingly large difference between the direct CP asymmetries, Delta A_CP, in these two modes. We show that the two puzzles are naturally related in the Standard Model via s- and d-quark "penguin contractions". Their sum gives rise to Delta A_CP, while their difference contributes to the two branching ratios with opposite sign. Assuming nominal SU(3) breaking, a U-spin fit to the D0 -> K+ pi-, pi+ K-, pi+ pi-, K+ K- decay rates yields large penguin contractions that naturally explain Delta A_CP. Expectations for the individual CP asymmetries are also discussed.

24 pages, 8 figures

References in corpus (21)

• Multiple-channel generalization of Lellouch-Luscher formula
• New Physics and CP Violation in Singly Cabibbo Suppressed D Decays
• Evidence for CP violation in time-integrated D0 -> h-h+ decay rates
• Size of direct CP violation in singly Cabibbo-suppressed D decays
• Direct CP violation in two-body hadronic charmed meson decays
• CP Violation and Flavor SU(3) Breaking in D-meson Decays
• Implications of the LHCb Evidence for Charm CP Violation
• CP asymmetries in singly-Cabibbo-suppressed $D$ decays to two pseudoscalar mesons
• The Standard Model confronts CP violation in $D^0\to {\pi }^{+}{\pi }^{-}$ and $D^0\to K^{+}{K}^{-}$
• Measurement of the difference of CP-violating asymmetries in D0 -> K+K- and D0 ->pi+pi- decays at CDF
• Measurement of CP--violating asymmetries in D0 --> pi+ pi- and D0 --> K+K- decays at CDF
• CP Violation in τ->νπK_S and D->πK_S: The Importance of K_S-K_L Interference
• Repercussions of Flavour Symmetry Breaking on CP Violation in D-Meson Decays
• Direct CP violation in charm and flavor mixing beyond the SM
• $D\to \pi ,l\nu$ Semileptonic Decays, $|V_{cd}|$ and 2${}^{nd}$ Row Unitarity from Lattice QCD
• New Physics Models of Direct CP Violation in Charm Decays
• Search for CP violation in the decay $D^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$
• Relating direct CP violation in D decays and the forward-backward asymmetry in $t\bar{t}$ production
• CP violation in $D^0\to (K^{-}{K}^{+},{\pi }^{-}{\pi }^{+})$ from diquarks
• Can Up FCNC solve the $\Delta A_{CP}$ puzzle?
• Reanalysis of pion pion phase shifts from K -> pi pi decays

Cited by in corpus (82)

• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of summer 2016
• QCD and strongly coupled gauge theories: challenges and perspectives
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2018
• Averages of $b$-hadron, $c$-hadron, and $\tau$-lepton properties as of 2021
• Observation of $CP$ violation in charm decays
• Implications of LHCb measurements and future prospects
• On Partial Compositeness and the CP asymmetry in charm decays
• SU(3) Sum Rules for Charm Decay
• SU(3)-Flavor Anatomy of Non-Leptonic Charm Decays
• Revisiting CP violation in $D\to PP$ and $VP$ decays
• Topological amplitudes in $D$ decays to two pseudoscalars: a global analysis with linear $SU(3{)}_F$ breaking
• The Emergence of the $\Delta U=0$ Rule in Charm Physics
• Modified Higgs Physics from Composite Light Flavors
• D-meson lifetimes within the heavy quark expansion
• Standard Model prediction and new physics tests for D0 -> h+h-l+l- (h=π,K; l=e,μ)
• On $SU(3{)}_F$ Breaking through Final State Interactions and CP Asymmetries in $D\to PP$ Decays
• $\Delta A_{CP}$ within the Standard Model and beyond
• Measurement of the difference of time-integrated CP asymmetries in $D^0\to K^{-}{K}^{+}$ and $D^0\to {\pi }^{-}{\pi }^{+}$ decays
• Sum Rules of Charm CP Asymmetries beyond the SU(3)${}_F$ Limit
• Search for CP violation in the decay $D^{+}\to {\pi }^{-}{\pi }^{+}{\pi }^{+}$
• Implications of the LHCb discovery of CP violation in charm decays
• Charming CP Violation and Dipole Operators from RS Flavor Anarchy
• SU(3) symmetry breaking in charmed baryon decays
• Null tests from angular distributions in $D\to P_1{P}_2{l}^{+}{l}^{-}$, $l=e,\mu$ decays on and off peak
• A bound on the charm chromo-EDM and its implications
• Measurement of $CP$ asymmetry in $D^0\to K^{-}{K}^{+}$ decays
• Resonance catalyzed CP asymmetries in D -> P l+ l-
• Gauge Mediation beyond Minimal Flavor Violation
• U-Spin Sum Rules for CP Asymmetries of Three-Body Charmed Baryon Decays
• Dispersive and Absorptive CP Violation in $D^0-\overline{D^0}$ Mixing
• Direct CP violation in beauty and charm hadron decays
• $CP$ asymmetries in charm decays into neutral kaons
• Final-state interactions in the CP asymmetries of charm-meson two-body decays
• CP violation in D meson decays: would it be a sign of new physics ?
• A $U$-Spin Anomaly in Charm CP Violation
• Up Asymmetries From Exhilarated Composite Flavor Structures
• Simple model for large CP violation in charm decays, B-physics anomalies, muon g-2, and Dark Matter
• Two is better than one: The U-spin-CP anomaly in charm
• SU(3)${}_F$ Analysis for Beauty Baryon Decays
• Addendum to "High order U-spin breaking: A precise amplitude relation in D0 decays"
• Search for CP violation in D+ -> phi pi+ and Ds+ -> Ks pi+ decays
• Search for CP violation in the Decays $D^{\pm }\to K_S^0{K}^{\pm }$, $D_s^{\pm }\to K_S^0{K}^{\pm }$, and $D_s^{\pm }\to K_S^0{\pi }^{\pm }$
• Revisiting D0-D0bar mixing using U-spin
• A self-consistent framework of topological amplitude and its $SU(N)$ decomposition
• Resonance enhancement of Charm CP
• Direct CP Violation in D Decays in view of LHCb and CDF Results
• The Mathematical Structure of $U$-Spin Amplitude Sum Rules
• Search for $CP$ violation in $D_s^{+}\to K_S^0{\pi }^{+}$, $D^{+}\to K_S^0{K}^{+}$ and $D^{+}\to \varphi {\pi }^{+}$ decays
• SU(3) in D decays: From $30\%$ symmetry breaking to $10^{-4}$ precision
• Testing the standard model with $D_{(s)}\to K_1(\to K\pi \pi )\gamma$ decays
• Shift in weak phase $\gamma$ due to CP asymmetries in $D$ decays to two pseudoscalar mesons
• The photon polarization in radiative $D$ decays, phenomenologically
• B^\pm -> D K^\pm with direct CP violation in charm
• Non-leptonic decays of Charmed mesons into two Pseudoscalars
• The UTfit Collaboration Average of D meson mixing data: Spring 2012
• Asymmetries from the interference between Cabibbo-favored and doubly-Cabibbo-suppressed D decays
• $B$ decays to two pseudoscalars and a generalized $\Delta I=\frac{1}{2}$ rule
• A Holographic Model of Heavy-light Mesons
• Topological amplitudes of charmed baryon decays in the $SU(3{)}_F$ limit
• Rare radiative decays of charm baryons
• Recent advances in charm mixing and $CP$ violation at LHCb
• Generation of isospin sum rules in heavy hadron weak decays
• Colored scalars and the neutron electric dipole moment
• Topological $SU(3{)}_f$ approach for two-body ${\Omega }_c$ weak decays
• Bounding hadronic uncertainties in $c\to u$ decays
• Nonuniversality of indirect CP asymmetries in $D\to \pi \pi ,KK$ decays
• Search for $CP$ violation in $D_{(s)}^{+}\to K^{-}{K}^{+}{K}^{+}$ decays
• Up Sector of Minimal Flavor Violation: Top Quark Properties and Direct D meson CP violation
• Implications of the evidence for direct $\mathbf{CP}$ violation in $D\to {\pi }^{+}{\pi }^{-}$ decays
• Theoretical analysis of direct $CP$ violation and differential decay width in $D^{\pm }\to {\pi }^{\pm }{\pi }^{+}{\pi }^{-}$ in phase space around the resonances ${\rho }^0(770)$ and $f_0(500)$
• A Review of $CP$ Violation Measurements in Charm at LHCb
• High-precision $D^0\to V^{+}{P}^{-}$ - more accurate than $D^0\to P^{+}{P}^{-}$
• Rescattering-induced $D\to SS$ weak decays
• Observation of CP violation in charm decays at LHCb
• Direct CP violation in non-leptonic charm decays: Implications for new physics
• $U$-spin sum rules for two-body decays of bottom baryons
• Measurement of $CP$ asymmetries in $D_{(s)}^{+}\to \eta {\pi }^{+}$ and $D_{(s)}^{+}\to {\eta }^{\prime }{\pi }^{+}$ decays
• CP asymmetries in $D\to P{P}^{\prime }$ decays
• Time-dependent study of $K_S\to {\pi }^{+}{\pi }^{-}$ decays for flavour physics measurements
• Model-Independent Analysis of CP Violation in Charmed Meson Decays
• CKM studies in the charm sector
• Direct CP violation in D-meson decays