The time-dependent CP asymmetries in B0rarrpi+pi- and Bs0rarrK+K- decays are measured using a data sample of pp collisions corresponding to an integrated luminosity of 3.0 fb-1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The same data sample is used to measure the time-integrated CP asymmetries in B0rarrK+pi- and Bs0rarrpi+K- decays. The results are Cpi+pi-=-0.34+or-0.06+or-0.01, Spi+pi-=-0.63+or-0.05+or-0.01, CK+K-=0.20+or-0.06+or-0.02, SK+K-=0.18+or-0.06+or-0.02, AK+K-DeltaGamma=-0.79+or-0.07+or-0.10, ACPB0=-0.084+or-0.004+or-0.003, and ACPBs0=0.213+or-0.015+or-0.007, where the first uncertainties are statistical and the second systematic. Evidence for CP violation is found in the Bs0rarrK+K- decay for the first time.

Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albicocco, P., et al. (2018). Measurement of CP asymmetries in two-body B(s)0 -meson decays to charged pions and kaons. PHYSICAL REVIEW D, 98(3) [10.1103/PhysRevD.98.032004].

Measurement of CP asymmetries in two-body B(s)0 -meson decays to charged pions and kaons

Belloli, N.;Borsato, M.;Calvi, M.;Carniti, P.;Cassina, L.;Fazzini, D.;Gotti, C.;Grillo, L.;Khanji, B.;Martinelli, M.;Matteuzzi, C.;Petruzzo, M.;
2018

Abstract

The time-dependent CP asymmetries in B0rarrpi+pi- and Bs0rarrK+K- decays are measured using a data sample of pp collisions corresponding to an integrated luminosity of 3.0 fb-1, collected with the LHCb detector at center-of-mass energies of 7 and 8 TeV. The same data sample is used to measure the time-integrated CP asymmetries in B0rarrK+pi- and Bs0rarrpi+K- decays. The results are Cpi+pi-=-0.34+or-0.06+or-0.01, Spi+pi-=-0.63+or-0.05+or-0.01, CK+K-=0.20+or-0.06+or-0.02, SK+K-=0.18+or-0.06+or-0.02, AK+K-DeltaGamma=-0.79+or-0.07+or-0.10, ACPB0=-0.084+or-0.004+or-0.003, and ACPBs0=0.213+or-0.015+or-0.007, where the first uncertainties are statistical and the second systematic. Evidence for CP violation is found in the Bs0rarrK+K- decay for the first time.
Articolo in rivista - Articolo scientifico
Flavor physics; B physics; CP violation; Flavour Changing Neutral Currents; Hadron-Hadron scattering (experiments); Oscillation; Nuclear and High Energy Physics
English
2018
98
3
none
Aaij, R., Adeva, B., Adinolfi, M., Ajaltouni, Z., Akar, S., Albicocco, P., et al. (2018). Measurement of CP asymmetries in two-body B(s)0 -meson decays to charged pions and kaons. PHYSICAL REVIEW D, 98(3) [10.1103/PhysRevD.98.032004].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/205603
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