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.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Measurement of CP asymmetries in D± → η′π± and Ds±→η′π± decays. PHYSICS LETTERS. SECTION B, 771, 21-30 [10.1016/j.physletb.2017.05.013].

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

Belloli, N.;BORGHERESI, ALESSIO;Borsato, M.;Calvi, M.;Carniti, P.;Cassina, L.;FAZZINI, DAVIDE;Gotti, C.
;
Grillo, L.;MARTINELLI, MAURIZIO;Matteuzzi, C.;Petruzzo, M.;
2017

Abstract

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.
Articolo in rivista - Articolo scientifico
Nuclear and High Energy Physics; ROOT-S=7 TEV; PP
English
2017
771
21
30
none
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albrecht, J., et al. (2017). Measurement of CP asymmetries in D± → η′π± and Ds±→η′π± decays. PHYSICS LETTERS. SECTION B, 771, 21-30 [10.1016/j.physletb.2017.05.013].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/181704
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