In:
Journal of High Energy Physics, Springer Science and Business Media LLC, Vol. 2023, No. 7 ( 2023-07-07)
Kurzfassung:
A search for direct CP violation in the Cabibbo-suppressed decay $$ {D}_s^{+} $$ D s + → K − K + K + and in the doubly Cabibbo-suppressed decay D + → K − K + K + is reported. The analysis is performed with data collected by the LHCb experiment in proton-proton collisions at a centre-of-mass energy of 13 TeV corresponding to an integrated luminosity of 5.6 fb − 1 . The search is conducted by comparing the $$ {D}_{(s)}^{+} $$ D s + and $$ {D}_{(s)}^{-} $$ D s − Dalitz-plot distributions through a model-independent binned technique, based on fits to the K − K + K + invariant-mass distributions, with a total of 0.97 (1.27) million $$ {D}_s^{+} $$ D s + ( D + ) signal candidates. The results are given as p -values for the hypothesis of CP conservation and are found to be 13.3% for the $$ {D}_s^{+} $$ D s + → K − K + K + decay and 31.6% for the D + → K − K + K + decay. No evidence for CP violation is observed in these decays.
Materialart:
Online-Ressource
ISSN:
1029-8479
DOI:
10.1007/JHEP07(2023)067
Sprache:
Englisch
Verlag:
Springer Science and Business Media LLC
Publikationsdatum:
2023
ZDB Id:
2027350-2