A search for CP violation in D+→ϕπ+ decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP-violating asymmetry is measured to be (−0.04±0.14±0.14)% for candidates with K−K+ mass within 20 MeV/c2 of the ϕ meson mass. A search for a CP-violating asymmetry that varies across the ϕ mass region of the D+→K−K+π+ Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61±0.83±0.14)%.
Search for CP violation in D + → ϕπ + and $ D_s^{+}\to K_S^0{\pi^{+}} $ decays
BALDINI, Wander;BOZZI, Concezio;SAVRIE', Mauro;
2013
Abstract
A search for CP violation in D+→ϕπ+ decays is performed using data collected in 2011 by the LHCb experiment corresponding to an integrated luminosity of 1.0 fb−1 at a centre of mass energy of 7 TeV. The CP-violating asymmetry is measured to be (−0.04±0.14±0.14)% for candidates with K−K+ mass within 20 MeV/c2 of the ϕ meson mass. A search for a CP-violating asymmetry that varies across the ϕ mass region of the D+→K−K+π+ Dalitz plot is also performed, and no evidence for CP violation is found. In addition, the CP asymmetry in the D+s→K0Sπ+ decay is measured to be (0.61±0.83±0.14)%.File in questo prodotto:
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