TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Fernandez Casani, A.
AU  - Jaimes Elles, S. J.
AU  - Jashal, B. K.
AU  - Libralon, S.
AU  - Martinez-Vidal, F.
AU  - Mazorra de Cos, J.
AU  - Oyanguren, A.
AU  - Rebollo De Miguel, M.
AU  - Sanderswood, I.
PY  - 2024
DA  - 2024//
TI  - Measurement of CP Violation Observables in D+ → K- K+ π+ Decays
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 251801 - 13pp
VL  - 133
IS  - 25
PB  - Amer Physical Soc
AB  - A search for violation of the charge-parity (CP) symmetry in the D+ -> K- K+ pi(+) decay is presented, with proton-proton collision data corresponding to an integrated luminosity of 5.4 fb(-1), collected at a center-of-mass energy of 13 TeV with the LHCb detector. A novel model-independent technique is used to compare the D+ and D- phase-space distributions, with instrumental asymmetries subtracted using the D-s(+) -> K- K+ pi(+) decay as a control channel. The p value for the hypothesis of CP conservation is 8.1%. The CP asymmetry observables A(CP vertical bar S)(phi pi+) = (0.95 +/- 0.43(stat) +/- 0.26(syst)) x 10(-3) and A(CP vertical bar S)((K) over bar *0 K+) = (-0.26 +/- 0.56(stat) +/- 0.18(syst)) x 10(-3) are also measured. These results show no evidence of CP violation and represent the most sensitive search performed through the phase space of a multibody decay.
SN  - 0031-9007
UR  - https://arxiv.org/abs/2409.01414
UR  - https://doi.org/10.1103/PhysRevLett.133.251801
DO  - 10.1103/PhysRevLett.133.251801
LA  - English
N1  - WOS:001389700900002
ID  - LHCbCollaborationAaij_etal2024
ER  -