Szczegóły publikacji
Opis bibliograficzny
Search for CP violation in the phase space of $D^{0} \to \pi^{+}\pi^{-}\pi^{+}\pi^{-}$ decays / R. Aaij, [et al.], M. Baszczyk, [et al.], A. DENDEK, [et al.], M. FIRLEJ, [et al.], T. FIUTOWSKI, [et al.], M. IDZIK, [et al.], W. KUCEWICZ, [et al.], P. MORAWSKI, [et al.], J. MOROŃ, [et al.], A. OBŁĄKOWSKA-MUCHA, [et al.], K. ŚWIENTEK, [et al.], T. SZUMLAK, [et al.] // Physics Letters. B ; ISSN 0370-2693. — 2017 — vol. 769, s. 345–356. — Bibliogr. s. 352, Abstr. — Publikacja dostępna online od: 2017-04-04. — M. Baszczyk – afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków ; W. Kucewicz – pierwsza afiliacja: Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences, Kraków
Autorzy (773)
Dane bibliometryczne
| ID BaDAP | 106166 |
|---|---|
| Data dodania do BaDAP | 2017-07-03 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.physletb.2017.03.062 |
| Rok publikacji | 2017 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Creative Commons | |
| Czasopismo/seria | Physics Letters, B |
Abstract
A search for time-integrated CP violation in the Cabibbo-suppressed decay D0→π+π−π+π− is performed using an unbinned, model-independent technique known as the energy test. This is the first application of the energy test in four-body decays. The search is performed for P-even CP asymmetries and, for the first time, is extended to probe the P-odd case. Using proton–proton collision data corresponding to an integrated luminosity of 3.0 fb−1 collected by the LHCb detector at centre-of-mass energies of s=7 TeV and 8 TeV, the world's best sensitivity to CP violation in this decay is obtained. The data are found to be consistent with the hypothesis of CP symmetry with a p-value of (4.6±0.5)% in the P-even case, and marginally consistent with a p-value of (0.6±0.2)% in the P-odd case, corresponding to a significance for CP non-conservation of 2.7 standard deviations. © 2017 The Author(s)
