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 A_CP(D± → η′ π±) = (−0.61 ± 0.72 ± 0.53 ± 0.12)% and A_CP(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 A_CP(D± → K0S π±) and A_CP(Ds± → ϕ π±) 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

BETTI, FEDERICO;Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZUCCHELLI, STEFANO
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 A_CP(D± → η′ π±) = (−0.61 ± 0.72 ± 0.53 ± 0.12)% and A_CP(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 A_CP(D± → K0S π±) and A_CP(Ds± → ϕ π±) measurements used for calibration. The results represent the most precise measurements of these asymmetries to date.
2017
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].
Aaij, R.; Adeva, B.; Adinolfi, M.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Alvarez Cartelle, P.; Alv...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/591972
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