The time-integrated CP asymmetry in the decay D0 → K0S K0S is measured using 3 fb^−1 of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The flavour of the D0 meson is determined by use of the decay D*+ → D0 π+ and its charge conjugate mode. The result is A_CP = −0.029 ± 0.052 ± 0.022, where the first uncertainty is statistical and the second systematic. The result is consistent with Standard Model expectations and improves the uncertainty with respect to the only previous measurement of this quantity by more than a factor of three.

Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2015). Measurement of the Time-Integrated CP Asymmetry in D0 → K0S K0S Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2015(10), 0-14 [10.1007/JHEP10(2015)055].

Measurement of the Time-Integrated CP Asymmetry in D0 → K0S K0S Decays

Capriotti, L.;CARBONE, ANGELO;FERRARI, FABIO;GALLI, DOMENICO;MUSSINI, MANUEL;PATRIGNANI, CLAUDIA;PERAZZINI, STEFANO;VAGNONI, VINCENZO MARIA;ZANGOLI, MARIA;ZUCCHELLI, STEFANO
2015

Abstract

The time-integrated CP asymmetry in the decay D0 → K0S K0S is measured using 3 fb^−1 of proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7 and 8 TeV. The flavour of the D0 meson is determined by use of the decay D*+ → D0 π+ and its charge conjugate mode. The result is A_CP = −0.029 ± 0.052 ± 0.022, where the first uncertainty is statistical and the second systematic. The result is consistent with Standard Model expectations and improves the uncertainty with respect to the only previous measurement of this quantity by more than a factor of three.
2015
Aaij, R., Adeva, B., Adinolfi, M., Affolder, A., Ajaltouni, Z., Akar, S., et al. (2015). Measurement of the Time-Integrated CP Asymmetry in D0 → K0S K0S Decays. JOURNAL OF HIGH ENERGY PHYSICS, 2015(10), 0-14 [10.1007/JHEP10(2015)055].
Aaij, R.; Adeva, B.; Adinolfi, M.; Affolder, A.; Ajaltouni, Z.; Akar, S.; Albrecht, J.; Alessio, F.; Alexander, M.; Ali, S.; Alkhazov, G.; Cartelle, P...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11585/516454
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