Model-independent search for CP violation in D<sup>0</sup>→K<sup>-</sup>K<sup>+</sup>π<sup>-</sup>π<sup>+</sup> and D<sup>0</sup>→π<sup>-</sup>π<sup>+</sup>π<sup>+</sup>π<sup>-</sup> decays

R. Aaij, B. Adeva, M. Adinolfi, C. Adrover, A. Affolder, Z. Ajaltouni, J. Albrecht, F. Alessio, M. Alexander, S. Ali, G. Alkhazov, P. Alvarez Cartelle, A. A. Alves, S. Amato, S. Amerio, Y. Amhis, L. Anderlini, J. Anderson, R. Andreassen, J. E. AndrewsR. B. Appleby, O. Aquines Gutierrez, F. Archilli, A. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, M. Baalouch, S. Bachmann, J. J. Back, C. Baesso, V. Balagura, W. Baldini, R. J. Barlow, C. Barschel, S. Barsuk, W. Barter, Th Bauer, A. Bay, J. Beddow, F. Bedeschi, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, G. Bencivenni, S. Benson, J. Benton, A. Berezhnoy, R. Bernet, M. O. Bettler, M. van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, J. Blouw, S. Blusk, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, E. Bowen, C. Bozzi, T. Brambach, J. van den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, I. Burducea, A. Bursche, G. Busetto, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, D. Campora Perez

Resultado de la investigación

24 Citas (Scopus)

Resumen

A search for CP violation in the phase-space structures of D0 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. © 2013 CERN.
Idioma originalEnglish
Páginas (desde-hasta)623-633
Número de páginas11
PublicaciónPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
DOI
EstadoPublished - 1 ene 2013
Publicado de forma externa

All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

Huella Profundice en los temas de investigación de 'Model-independent search for CP violation in D<sup>0</sup>→K<sup>-</sup>K<sup>+</sup>π<sup>-</sup>π<sup>+</sup> and D<sup>0</sup>→π<sup>-</sup>π<sup>+</sup>π<sup>+</sup>π<sup>-</sup> decays'. En conjunto forman una huella única.

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    Aaij, R., Adeva, B., Adinolfi, M., Adrover, C., Affolder, A., Ajaltouni, Z., Albrecht, J., Alessio, F., Alexander, M., Ali, S., Alkhazov, G., Alvarez Cartelle, P., Alves, A. A., Amato, S., Amerio, S., Amhis, Y., Anderlini, L., Anderson, J., Andreassen, R., ... Campora Perez, D. (2013). Model-independent search for CP violation in D<sup>0</sup>→K<sup>-</sup>K<sup>+</sup>π<sup>-</sup>π<sup>+</sup> and D<sup>0</sup>→π<sup>-</sup>π<sup>+</sup>π<sup>+</sup>π<sup>-</sup> decays. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 623-633. https://doi.org/10.1016/j.physletb.2013.09.011