Resumen
A search for CP violation in the phase-space structures of D 0 and D-0 decays to the final states K -K +π -π + and π -π +π +π - is presented. The search is carried out with a data set corresponding to an integrated luminosity of 1.0 fb -1 collected in 2011 by the LHCb experiment in pp collisions at a centre-of-mass energy of 7 TeV. For the K -K +π -π + final state, the four-body phase space is divided into 32 bins, each bin with approximately 1800 decays. The p-value under the hypothesis of no CP violation is 9.1%, and in no bin is a CP asymmetry greater than 6.5% observed. The phase space of the π -π +π +π - final state is partitioned into 128 bins, each bin with approximately 2500 decays. The p-value under the hypothesis of no CP violation is 41%, and in no bin is a CP asymmetry greater than 5.5% observed. All results are consistent with the hypothesis of no CP violation at the current sensitivity.
Idioma original | English |
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Páginas (desde-hasta) | 623-633 |
Número de páginas | 11 |
Publicación | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
Volumen | 726 |
N.º | 4-5 |
DOI | |
Estado | Published - 1 ene 2013 |
Publicado de forma externa | Sí |
All Science Journal Classification (ASJC) codes
- Física nuclear y de alta energía