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

Abstract

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)%.

22 pages including author list, 5 figures, version published in JHEP

References in corpus (8)

• PYTHIA 6.4 Physics and Manual
• New Physics and CP Violation in Singly Cabibbo Suppressed D Decays
• Prompt charm production in pp collisions at sqrt(s)=7 TeV
• Measurement of the difference of CP-violating asymmetries in D0 -> K+K- and D0 ->pi+pi- decays at CDF
• Measurement of the D+/- production asymmetry in 7 TeV pp collisions
• Search for direct CP violation in D0 -> h- h+ modes using semileptonic B decays
• Measurement of the Ds+ - Ds- production asymmetry in 7 TeV pp collisions
• Search for direct CP-violation in singly-Cabibbo suppressed D+- --> K+ K- pi+- decays

Cited by in corpus (16)

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• Model-independent search for CP violation in D0 to K-K+pi-pi+ and D0 to pi-pi+pi+pi- decays
• $CP$ asymmetries in charm decays into neutral kaons
• A study of $CP$ violation in $B^{\mp }\to D{h}^{\mp }$ ($h=K,\pi$) with the modes $D\to K^{\mp }{\pi }^{\pm }{\pi }^0$, $D\to {\pi }^{+}{\pi }^{-}{\pi }^0$ and $D\to K^{+}{K}^{-}{\pi }^0$
• Search for $CP$ violation in $D_s^{+}\to K_S^0{\pi }^{+}$, $D^{+}\to K_S^0{K}^{+}$ and $D^{+}\to \varphi {\pi }^{+}$ decays
• Branching fraction and CP asymmetry of the decays $B^{+}\to K_{\mathrm{S}}^0{\pi }^{+}$ and $B^{+}\to K_{\mathrm{S}}^0{K}^{+}$
• Heavy Flavour Physics at the LHC
• Strong $D_s^{\ast }{D}_s{\eta }^{(\prime )}$ and $B_s^{\ast }{B}_s{\eta }^{(\prime )}$ vertices from QCD light-cone sum rules
• QCD phase diagram: overview of recent lattice results
• Measurement of the direct $CP$-violating charge asymmetry in $D_s^{\pm }\to \varphi {\pi }^{\pm }$ decays
• SU(3)F in nonleptonic charm decays
• Measurement of $CP$ violation observables in $D^{+}\to K^{-}{K}^{+}{\pi }^{+}$ decays
• Measuring CP violation in 3- and 4-body decays
• CKM studies in the charm sector