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Measurement of CP asymmetries in $D^{\pm} \to \eta^{\prime}\pi^{\pm}$ and $D^{\pm}_{s} \to \eta^{\prime}\pi^{\pm}$ decays

Bernet, R; Müller, K; Serra, N; Steinkamp, O; Straumann, U; Vollhardt, A; et al (2017). Measurement of CP asymmetries in $D^{\pm} \to \eta^{\prime}\pi^{\pm}$ and $D^{\pm}_{s} \to \eta^{\prime}\pi^{\pm}$ decays. Physics Letters B, 771:21-30.

Abstract

A search for CP violation in $D^{\pm} \to \eta^{\prime}\pi^{\pm}$ and $D^{\pm}_{s} \to \eta^{\prime}\pi^{\pm}$ decays 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
$\mathcal{A}_{CP}(D^{\pm} \to \eta^\prime \pi^{\pm}) = (−0.61 \pm 0.72 \pm 0.53 \pm 0.12)$% and
$\mathcal{A}_{CP}(D^{\pm}_s \to \eta^\prime \pi^{\pm}) = (−0.82 \pm 0.36 \pm 0.22 \pm 0.27)$%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the $\mathcal{A}_{CP}(D^{\pm} \to K^{0}_{S}\pi^{\pm})$ and $\mathcal{A}_{CP}(D^{\pm}_{s} \to \phi\pi^{\pm})$ measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.

Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Scopus Subject Areas:Physical Sciences > Nuclear and High Energy Physics
Language:English
Date:May 2017
Deposited On:14 Dec 2017 14:40
Last Modified:18 May 2025 03:41
Publisher:Elsevier
ISSN:0370-2693
OA Status:Gold
Free access at:Publisher DOI. An embargo period may apply.
Publisher DOI:https://doi.org/10.1016/j.physletb.2017.05.013
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  • Licence: Creative Commons: Attribution 4.0 International (CC BY 4.0)

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