In recent years charm physics has undergone a renaissance, one which has been catalysed by an unexpected and impressive set of experimental results from the $B$-factories, the Tevatron and LHCb. The existence of $D^0\bar{D}{}^0$ oscillations is now well established, and the recent discovery of $CP$ violation in $D^0$ decays has further renewed interest in the charm sector. In this article we review the current status of charm-mixing and $CP$-violation measurements, and assess their agreement with theoretical predictions within the Standard Model and beyond. We look forward to the great improvements in experimental precision that can be expected over the coming two decades, and the prospects for corresponding advances in theoretical understanding.

Mixing and $CP$ violation in the charm system

A search for CP violation in D+ -> phi pi+ decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb^{-1} at a centre of mass energy of 7 TeV. The CP-violating asymmetry is measured to be (-0.04+/-0.14+/-0.14)% for candidates with K-K+ mass within 20 MeV/c^{2} of the phi meson mass. A search for a CP-violating asymmetry that varies across the phi mass region of the D+ -> K-K+pi+ Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the Ds+ -> Ks pi+ decay is measured to be (0.61+/-0.83+/-0.14)%.

/pdf/search-for-cp-violation-in-d-phi-pi-and-ds-ks-pi-decays-3bzv7eoqfa.pdf

Search for CP violation in D+ -> phi pi+ and Ds+ -> Ks pi+ decays

A search for CP violation in D + → ϕπ + decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP -violating asymmetry is measured to be (−0.04 ± 0.14 ± 0.14)% for candidates with K − K + mass within 20 MeV/c 2 of the ϕ meson mass. A search for a CP -violating asymmetry that varies across the ϕ mass region of the D + → K − K + π + Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61 ± 0.83 ± 0.14)%.

/pdf/search-for-cp-violation-in-d-phi-pi-and-ds-ks-pi-decays-3yheg7hue6.pdf

This thesis on searches for $C\!P$ violation in charmed meson decays is introduced with an overview of the theoretical background to the subject starting from the Standard Model of particle physics. A discussion of $C\!P$ violation in the kaon and charm systems is followed by an introduction to Dalitz plot analysis.

Introduction and Theoretical Background

A search for $C\!P$ violation in the decay $D^+ \rightarrow \phi \pi ^+$ is described This search used 1 $fb^{-1}$ of data collected at LHCb in 2011 A measurement of the $C\!P$ violation integrated across the resonance is complemented by the definition and measurement of a new observable for CPV searches in decays to vector mesons This quantity exploits the variation of the strong phase across the resonance in the Dalitz plot The systematic uncertainties associated with the precision measurement of charge asymmetries at a hadron collider are discussed in detail The searches are the most sensitive to date but no $C\!P$ violation was found

Search for $C\!P$ Violation in $D ^+ \rightarrow K ^{-} K ^+ \pi ^+ $ Decays with Data Collected at LHCb in 2010

/pdf/search-for-direct-cp-violation-in-singly-cabibbo-suppressed-jtkf48f3mc.pdf

Search for Direct CP Violation in Singly-Cabibbo Suppressed D +/- to K+ K-pi +/- Decays

https://digital.library.unt.edu/ark:/67531/metadc836934/m2/1/high_res_d/1063789.pdf

Study of $E^+E^- \to P \bar{p}$ Via Initial-State Radiation at BABAR

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Search for Direct CP Violation in Singly-Cabibbo Suppressed D +/- to K+ K-pi +/- Decays

Study of $E^+E^- \to P \bar{p}$ Via Initial-State Radiation at BABAR