A search for time-integrated CP violation in the Cabibbo-suppressed decay D0 → π−π+π0 is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton–proton collision data, corresponding to an integrated luminosity of 2.0 fb−1 collected by the LHCb detector at a centre-of-mass energy of √s = 8 TeV, the world’s best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6 ± 0.5)%.
Search for CP violation in D-0 -> pi(-)pi(+)pi(0) decays with the energy test
COGONI, VIOLETTA;Dettori F.;Lai A.;MANCA, GIULIA;OLDEMAN, RUDOLF GERHARD CHRISTIAAN;SAITTA, BIAGIO;VACCA, CLAUDIA;
2015-01-01
Abstract
A search for time-integrated CP violation in the Cabibbo-suppressed decay D0 → π−π+π0 is performed using for the first time an unbinned model-independent technique known as the energy test. Using proton–proton collision data, corresponding to an integrated luminosity of 2.0 fb−1 collected by the LHCb detector at a centre-of-mass energy of √s = 8 TeV, the world’s best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (2.6 ± 0.5)%.File in questo prodotto:
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