Measurement of CP asymmetries in D± → η′π± and Ds±→η′π± decays

Measurement of CP asymmetries in D± → η′π± and Ds±→η′π± decays

A search for CP violation in D±→η′π± and Ds±→η′π± 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 ACP(D±→η′π±)=(−0....

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Veröffentlicht in:Physics letters. B 2017-08, Vol.771, p.21-30
Hauptverfasser: Aaij, R., Adinolfi, M., Akar, S., Amhis, Y., Archilli, F., Badalov, A., Baker, S., Barlow, R.J., Bertolin, A., Bezshyiko, Ia, Birnkraut, A., Borghi, S., Burr, C., Campora Perez, D.H., Cardini, A., Carson, L., Chefdeville, M., Cogoni, V., Cook, A., D'Ambrosio, C., Dall'Occo, E., De Aguiar Francisco, O., De Miranda, J.M., De Paula, L., Dettori, F., Dreimanis, K., Dujany, G., Easo, S., Frank, M., Furfaro, E., Garrido, L., Granado Cardoso, L.A., Gushchin, E., Hadjivasiliou, C., Hall, S., Hill, D., Hopchev, H., Hulsbergen, W., Johnson, D., Kecke, M., Klimaszewski, K., Kolpin, M., Kravchuk, L., Kruse, F., Kudryavtsev, V., Kuonen, A.K., Lai, A., van Leerdam, J., Lefèvre, R., Leroy, O., Linn, C., Loh, D., Lucio Martinez, M., Lusiani, A., Lyu, X., Matteuzzi, C., McNulty, R., Milanes, D.A., Minard, M.-N., Nakada, T., Nguyen, A.D., O'Hanlon, D.P., Otto, A., Palano, A., Pastore, A., Pistone, A., Price, E., Prouve, C., dos Reis, A.C., Richards, S., Ruf, T., Sadykhov, E., Santacesaria, R., Savrina, D., Schiller, M., Schlupp, M., Simone, S., Smith, I.T., Sridharan, S., Stahl, M., Stenyakin, O., Stoica, S., Stracka, S., Tayduganov, A., Tellarini, G., Toriello, F., Tsaregorodtsev, A., Veneziano, G., Vilasis-Cardona, X., Vorobyev, V., Vázquez Sierra, C., Ward, D.R., Wark, H.M., Weiden, A., Wilkinson, G., Williams, M.P., Wilson, F.F., Xie, Y., Yushchenko, O., Zavertyaev, M.
Format: Artikel
Sprache:eng
Online-Zugang:Volltext
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:A search for CP violation in D±→η′π± and Ds±→η′π± 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 ACP(D±→η′π±)=(−0.61±0.72±0.53±0.12)% and ACP(Ds±→η′π±)=(−0.82±0.36±0.22±0.27)%, where the first uncertainties are statistical, the second systematic, and the third are the uncertainties on the ACP(D±→KS0π±) and ACP(Ds±→ϕπ±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.
ISSN:0370-2693
1873-2445
DOI:10.1016/j.physletb.2017.05.013