Measurement of <i>CP</i> asymmetries in <i>D</i><SUP>±</SUP> → <i>η</i>′<i>π</i><SUP>±</SUP> and <i>D<sub>S</sub></i><SUP>±</SUP> → <i>η</i>′<i>π</i><SUP>±</SUP> decays

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 771 more authors) (2017) Measurement of <i>CP</i> asymmetries in <i>D</i><SUP>±</SUP> → <i>η</i>′<i>π</i><SUP>±</SUP> and <i>D<sub>S</sub></i><SUP>±</SUP> → <i>η</i>′<i>π</i><SUP>±</SUP> decays. PHYSICS LETTERS B, 771. pp. 21-30.

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A search for $CP$ violation in $D^{\pm}\rightarrow \eta^{\prime} \pi^{\pm}$ and $D^{\pm}_{s}\rightarrow \eta^{\prime} \pi^{\pm}$ decays is performed using proton-proton collision data, corresponding to an integrated luminosity of $3$ fb$^{-1}$, recorded by the LHCb experiment at centre-of-mass energies of $7$ and $8$ TeV. The measured $CP$-violating charge asymmetries are $A_{CP}(D^{\pm} \rightarrow \eta^{\prime} \pi^{\pm})=(-0.61\pm 0.72 \pm 0.53 \pm 0.12)\%$ and $A_{CP}(D^{\pm}_{s}\rightarrow \eta^{\prime} \pi^{\pm})=(-0.82\pm 0.36 \pm 0.22 \pm 0.27)\%$, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the $A_{CP}(D^{\pm} \rightarrow K^0_S \pi^{\pm})$ and $A_{CP}(D^{\pm}_{s}\rightarrow \phi \pi^{\pm})$ measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.

Item Type: Article
Additional Information: All figures and tables, along with any supplementary material and additional information, are available at
Uncontrolled Keywords: hep-ex, hep-ex
Depositing User: Symplectic Admin
Date Deposited: 11 Sep 2017 13:43
Last Modified: 07 Oct 2023 16:24
DOI: 10.1016/j.physletb.2017.05.013
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