Measurement of CP asymmetries in D(s)+ -> ηπ+ and D(s)+ -> η'π+ decays

Lesya Shchutska, Olivier Schneider, Aurelio Bay, Guido Haefeli, Frédéric Blanc, Tatsuya Nakada, Michel De Cian, Elena Graverini, Renato Quagliani, Veronica Sølund Kirsebom, Elisabeth Maria Niel, Ettore Zaffaroni, Matthieu Philippe Luther Marinangeli, Donal Patrick Hill, Maria Vieites Diaz, Vladimir Macko, Sebastian Schulte, Lino Ferreira Lopes, Surapat Ek-In, Carina Trippl, Sara Celani, Serhii Cholak, Ana Bárbara Rodrigues Cavalcante
2023

Résumé

Searches for CP violation in the decays D(s)+ -> ηπ+ and D(s)+ -> η'π+ are performed using pp collision data corresponding to 6 fb(-1) of integrated luminosity collected by the LHCb experiment. The calibration channels D(s)+ -> ηπ+ and D(s)+ -> ϕπ+ are used to remove production and detection asymmetries. The resulting CP-violating asymmetries are

Source officielle