The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D0 ??? x-+x-?????+????? and D0 ??? K+K?????+????? decays are reported. The analysis uses proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. The dataset corresponds to an integrated luminosity of 9 fb???1. The full set of CP -averaged angular observables and their CP asymmetries are measured as a function of the dimuon invariant mass. The results are consistent with expectations from the standard model and with CP symmetry.
Angular Analysis of D⁰ → π⁺ π⁻ μ⁺ μ⁻ and D⁰ → K⁺ K⁻ μ⁺ μ⁻ Decays and Search for CP Violation [Angular Analysis of D0 -> x plus x-mu plus mu- and D0 -> K plus K-mu plus mu- Decays and Search for CP Violation] / R. Aaij, A.S.W.A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 128:22(2022 Jun 03), pp. 221801.221801-1-221801.221801-11. [10.1103/PhysRevLett.128.221801]
Angular Analysis of D⁰ → π⁺ π⁻ μ⁺ μ⁻ and D⁰ → K⁺ K⁻ μ⁺ μ⁻ Decays and Search for CP Violation [Angular Analysis of D0 -> x plus x-mu plus mu- and D0 -> K plus K-mu plus mu- Decays and Search for CP Violation]
S. AiolaMembro del Collaboration Group
;P. GandiniMembro del Collaboration Group
;L. HenryMembro del Collaboration Group
;D. MarangottoMembro del Collaboration Group
;A. MerliMembro del Collaboration Group
;N. NeriMembro del Collaboration Group
;M. PetruzzoMembro del Collaboration Group
;E. Spadaro NorellaMembro del Collaboration Group
;
2022
Abstract
The first full angular analysis and an updated measurement of the decay-rate CP asymmetry of the D0 ??? x-+x-?????+????? and D0 ??? K+K?????+????? decays are reported. The analysis uses proton-proton collision data collected with the LHCb detector at center-of-mass energies of 7, 8, and 13 TeV. The dataset corresponds to an integrated luminosity of 9 fb???1. The full set of CP -averaged angular observables and their CP asymmetries are measured as a function of the dimuon invariant mass. The results are consistent with expectations from the standard model and with CP symmetry.| File | Dimensione | Formato | |
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PhysRevLett.128.221801.pdf
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