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. Aiola
Membro del Collaboration Group
;
P. Gandini
Membro del Collaboration Group
;
L. Henry
Membro del Collaboration Group
;
D. Marangotto
Membro del Collaboration Group
;
A. Merli
Membro del Collaboration Group
;
N. Neri
Membro del Collaboration Group
;
M. Petruzzo
Membro del Collaboration Group
;
E. Spadaro Norella
Membro 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.
Settore FIS/01 - Fisica Sperimentale
3-giu-2022
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2434/940653
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