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Measurement of CP asymmetries in D+(s) → ηπ+ and D+(s) → η′π+ decays

Searches for CP violation in the decays D-(s)(+) -> eta pi(+) and D-(s)(+) -> eta'pi(+) are performed using pp collision data corresponding to 6 fb(-1) of integrated luminosity collected by the LHCb experiment. The calibration channels D-(s)(+) -> phi pi(+) are used to remove productio...

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Main Authors: Aaij, Roel (Author) , Archilli, Flavio (Author) , Bachmann, Sebastian (Author) , Berninghoff, Daniel (Author) , Borsato, Martino (Author) , Caspary, Rowina (Author) , Frau, Giulia (Author) , Gerick, David (Author) , Grabowski, Jascha (Author) , Günther, Paul André (Author) , Han, Xiaoxue (Author) , Hansmann-Menzemer, Stephanie (Author) , Hu, Jiangqiao (Author) , Kopecná, Renata (Author) , Kubat, Jakub (Author) , Leverington, Blake (Author) , Li, Peilian (Author) , Malygina, Hanna (Author) , Marks, Jörg (Author) , Mikhasenko, Mikhail (Author) , Neubert, Sebastian (Author) , Padeken, Klaas Ole (Author) , Sarpis, Mindaugas (Author) , Schmelling, Michael (Author) , Skuza, Raphael (Author) , Unverzagt, Daniel Joachim (Author) , Uwer, Ulrich (Author) , Viemann, Harald (Author) , Waldi, Roland (Author) , Wang, Chishuai (Author) , Witola, Lukas (Author) , Zhelezov, Alexey (Author)
Corporate Author: LHCb Collaboration (Author)
Format: Article (Journal)
Language:English
Published: April 18, 2023
In: Journal of high energy physics
Year: 2023, Issue: 6, Pages: 1-23
ISSN:1029-8479
DOI:10.1007/JHEP04(2023)081
Online Access:Resolving-System, kostenfrei, Volltext: https://doi.org/10.1007/JHEP04(2023)081
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Author Notes:the LHCb collaboration
Description
Summary:Searches for CP violation in the decays D-(s)(+) -> eta pi(+) and D-(s)(+) -> eta'pi(+) are performed using pp collision data corresponding to 6 fb(-1) of integrated luminosity collected by the LHCb experiment. The calibration channels D-(s)(+) -> phi pi(+) are used to remove production and detection asymmetries. The resulting CP-violating asymmetries are A(CP) (D+ -> eta pi(+)) = (0.34 +/- 0.66 +/- 0.16 +/- 0.05)%, A(CP) (D-s(+) -> eta pi(+)) = (0.32 +/- 0.51 +/- 0.12)%, A(CP) (D+ -> eta'pi(+)) = (0.49 +/- 0.18 +/- 0.06 +/- 0.05)%, A(CP) (D-s(+) -> eta'pi(+)) = (0.01 +/- 0.12 +/- 0.08)%, where the first uncertainty is statistical, the second is systematic and the third, relevant for the D+ channels, is due to the uncertainty on A(CP) (D+ -> phi pi(+)). These measurements, currently the most precise for three of the four channels considered, are consistent with the absence of CP violation. A combination of these results with previous LHCb measurements is presented.
Item Description:Bei D+(s) ist das + hochgestellt, (s) tiefgestellt. Bei π+ ist das + hochgestellt
The LHCb collaboration: R. Aaij, F. Archilli, S. Bachmann, R. Caspary, G. Frau, D. Gerick, J.P. Grabowski, P.A. Günther, X. Han, S. Hansmann-Menzemer, J. Hu, R. Kopecná, J. Kubat, B. Leverington, P. Li, H. Malygina, J. Marks, M. Mikhasenko, S. Neubert, K.O. Padeken, M. Sarpis, M. Schmelling, R. Skuza, D.J. Unverzagt, U. Uwer, R. Waldi, C. Wang, L. Witola, A. Zhelezov [und 979 weitere]
Gesehen am 01.03.2024
Physical Description:Online Resource
ISSN:1029-8479
DOI:10.1007/JHEP04(2023)081

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