The Standard Model confronts CP violation in D 0 → π + π − and D 0 → K + K −
نویسندگان
چکیده
منابع مشابه
Measurement of the CP Violation Parameter A_{Γ} in D^{0}→K^{+}K^{-} and D^{0}→π^{+}π^{-} Decays.
Asymmetries in the time-dependent rates of D^{0}→K^{+}K^{-} and D^{0}→π^{+}π^{-} decays are measured in a pp collision data sample collected with the LHCb detector during LHC Run 1, corresponding to an integrated luminosity of 3 fb^{-1}. The asymmetries in effective decay widths between D^{0} and D[over ¯]^{0} decays, sensitive to indirect CP violation, are measured to be A_{Γ}(K^{+}K^{-})=(-0...
متن کاملD ec 1 99 7 Branching Fractions for D 0 → K + K − and D 0 → π + π − , and a Search for CP Violation in D 0 Decays ⋆
E. M. Aitala , S. Amato , J. C. Anjos , J. A. Appel , D. Ashery , S. Banerjee , I. Bediaga , G. Blaylock , S. B. Bracker , P. R. Burchat , R. A. Burnstein , T. Carter , H. S. Carvalho , N. J. Copty, L. M. Cremaldi , C. Darling , K. Denisenko , A. Fernandez , G. Fox, P. Gagnon , C. Gobel , K. Gounder , A. M. Halling , G. Herrera , G. Hurvits , C. James , P. A. Kasper , S. Kwan , D. C. Langs , J....
متن کاملMeasurement of the Difference of Time-Integrated CP Asymmetries in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} Decays.
A search for CP violation in D^{0}→K^{-}K^{+} and D^{0}→π^{-}π^{+} decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb^{-1}, collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D^{*+}→D^{0}π^{+} and D^{*-}→D[over ¯]^{0}π^{-} decays. The difference between...
متن کاملStudy of the D 0 → K + K − π + π − decay
Using data from the FOCUS (E831) experiment at Fermilab, we present a new measurement for the Cabibbo-suppressed decay modeD0 → K+K−π+π−. We measure: Γ(D0 → K+K−π+π−)/Γ(D0 → K−π−π+π+) = 0.0295 ± 0.0011 ± 0.0008 . An amplitude analysis has been performed in order to determine the resonant substructure of this decay mode. The dominant components are the decays D0 → K1(1270) +K−, D0 → K1(1400) +K−...
متن کاملComparison of D → K 0 S π and D → K 0 L π Decay Rates
We present measurements of D → K Sπ and D → K 0 Lπ branching fractions using 281 pb −1 of ψ(3770) data at the CLEO-c experiment. We find that B(D → K Sπ ) is larger than B(D → K Lπ ), with an asymmetry of R(D) = 0.108 ± 0.025 ± 0.024. For B(D → K Sπ ) and B(D → K Lπ ), we observe no measurable difference; the asymmetry is R(D) = 0.022±0.016±0.018. The D asymmetry is consistent with the value ba...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of High Energy Physics
سال: 2012
ISSN: 1029-8479
DOI: 10.1007/jhep05(2012)140