Carregant...
Fitxers
Tipus de document
ArticleVersió
Versió publicadaData de publicació
Llicència de publicació
Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/221438
Search for CP violation in the phase space of D0 → K0 SK±π ∓ decays with the energy test
Títol de la revista
Director/Tutor
ISSN de la revista
Títol del volum
Recurs relacionat
Resum
A search for CP violation in D0 → K0 SK+π − and D0 → K0 SK−π + decays is reported. The search is performed using an unbinned model-independent method known as the energy test that probes local CP violation in the phase space of the decays. The data analysed correspond to an integrated luminosity of 5.4 fb−1 collected in proton-proton collisions by the LHCb experiment at a centre-of-mass energy of √ s = 13 TeV, amounting to approximately 950 thousand and 620 thousand signal candidates for the D0 → K0 SK−π + and D0 → K0 SK+π − modes, respectively. The method is validated using D0 → K−π +π −π + and D0 → K0 Sπ +π − decays, where CP-violating effects are expected to be negligible, and using background-enhanced regions of the signal decays. The results are consistent with CP symmetry in both the D0 → K0 SK−π + and the D0 → K0 SK+π − decays, with p-values for the hypothesis of no CP violation of 70% and 66%, respectively.
Matèries (anglès)
Citació
Citació
ALFONSO ALBERO, Alejandro, COMERMA MONTELLS, Albert, GARCIA MORENO, Paula, GARRIDO BELTRÁN, Lluís, GIOVENTÙ, Alessandra, GIRONELLA GIRONELL, Pere, GOMEZ FERNANDEZ, Sergio, GRAUGÉS POUS, Eugeni, LOBO SALVIA, Aniol, LÓPEZ HUERTAS, Albert, MANERA ESCALERO, Rafel, MARIN BENITO, Carla, MAURICIO FERRE, Joan, VAZQUEZ GOMEZ, Ricardo, LHCb Collaboration. Search for CP violation in the phase space of D0 → K0 SK±π ∓ decays with the energy test. _Journal of High Energy Physics_. 2024. Vol. 2024. [consulta: 25 de febrer de 2026]. ISSN: 1126-6708. [Disponible a: https://hdl.handle.net/2445/221438]