Measurement of mixing and CP violation parameters in two-body charm decays

R. Aaij, C. Abellan Beteta, 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, Y. Amhis, J. Anderson, B. R. Appleby, O. Aquines Gutierrez, F. ArchilliA. Artamonov, M. Artuso, E. Aslanides, G. Auriemma, S. Bachmann, J. J. Back, V. Balagura, W. Baldini, J. R.Barlow, C. Barschel, S. Barsuk, W. Barter, A. Bates, C. Bauer, Th Bauer, A. Bay, I. Bediaga, S. Belogurov, K. Belous, I. Belyaev, E. Ben-Haim, M. Benayoun, G. Bencivenni, S. Benson, J. Benton, R. Bernet, M. O. Bettler, M. Van Beuzekom, A. Bien, S. Bifani, T. Bird, A. Bizzeti, P. M. Bjørnstad, T. Blake, F. Blanc, C. Blanks, J. Blouw, S. Blusk, A. Bobrov, V. Bocci, A. Bondar, N. Bondar, W. Bonivento, S. Borghi, A. Borgia, T. J.V. Bowcock, C. Bozzi, T. Brambach, J. Van Den Brand, J. Bressieux, D. Brett, M. Britsch, T. Britton, N. H. Brook, H. Brown, K. De Bruyn, A. Büchler-Germann, I. Burducea, A. Bursche, J. Buytaert, S. Cadeddu, O. Callot, M. Calvi, M. Calvo Gomez, A. Camboni, P. Campana, A. Carbone, G. Carboni, R. Cardinale

Resultado de la investigación

32 Citas (Scopus)

Resumen

A study of mixing and indirect CP violation in D 0 mesons through the determination of the parameters y CP and A Γ is presented. The parameter y CP is the deviation from unity of the ratio of effective lifetimes measured in D 0 decays to the CP eigenstate K +K - with respect to decays to the Cabibbo favoured mode K -π +. The result measured using data collected by LHCb in 2010, corresponding to an integrated luminosity of 29 pb -1, is yCP = (5.5 ± 6.3 stat ± 4.1 syst) × 10 -3. The parameter A Γ is the asymmetry of effective lifetimes measured in decays of D 0 and D̄ 0 mesons to K +K -. The result is A Γ = (-5.9 ± 5.9 stat ± 2.1 syst) × 10 -3. A data-driven technique is used to correct for lifetime-biasing effects. Copyright CERN.
Idioma originalEnglish
PublicaciónJournal of High Energy Physics
DOI
EstadoPublished - 14 may 2012
Publicado de forma externa

    Huella digital

Citar esto

Aaij, R., Abellan Beteta, C., 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., Amhis, Y., Anderson, J., Appleby, B. R., Aquines Gutierrez, O., ... Cardinale, R. (2012). Measurement of mixing and CP violation parameters in two-body charm decays. Journal of High Energy Physics. https://doi.org/10.1007/JHEP04(2012)129