A search for CP violation in D0→K-K+ and D0→π-π+ decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb-1, collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D∗+→D0π+ and D∗-→D0π- decays. The difference between the CP asymmetries in D0→K-K+ and D0→π-π+ decays, ΔACP≡ACP(K-K+)-ACP(π-π+), is measured to be [-0.10±0.08(stat)±0.03(syst)]%. This is the most precise measurement of a time-integrated CP asymmetry in the charm sector from a single experiment.

Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2016). Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays. PHYSICAL REVIEW LETTERS, 116(19), 191601 [10.1103/PhysRevLett.116.191601].

Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays

Belloli, N;Borgheresi, A;Borsato, M;Calvi, M;Carniti, P;Cassina, L;Fazzini, D;Gotti, C;Grillo, L;Khanji, B;Martinelli, M;Petruzzo, M;
2016

Abstract

A search for CP violation in D0→K-K+ and D0→π-π+ decays is performed using pp collision data, corresponding to an integrated luminosity of 3 fb-1, collected using the LHCb detector at center-of-mass energies of 7 and 8 TeV. The flavor of the charm meson is inferred from the charge of the pion in D∗+→D0π+ and D∗-→D0π- decays. The difference between the CP asymmetries in D0→K-K+ and D0→π-π+ decays, ΔACP≡ACP(K-K+)-ACP(π-π+), is measured to be [-0.10±0.08(stat)±0.03(syst)]%. This is the most precise measurement of a time-integrated CP asymmetry in the charm sector from a single experiment.
Articolo in rivista - Articolo scientifico
Physics and Astronomy (all)
English
2016
116
19
191601
191601
none
Aaij, R., Abellán Beteta, C., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., et al. (2016). Measurement of the Difference of Time-Integrated CP Asymmetries in D0 → K-K+ and D0 → π-π + Decays. PHYSICAL REVIEW LETTERS, 116(19), 191601 [10.1103/PhysRevLett.116.191601].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/187821
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