Measurement of polarization and search for CP violation in B <inf>s</inf><sup>0</sup>?ff decays

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URI: https://hdl.handle.net/10902/28550
ISSN: 0031-9007
ISSN: 1079-7114
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Autoría
Aaltonen, Timo Antero; Álvarez González, Bárbara; Casal Laraña, Bruno; Cuevas Maestro, Francisco Javier; Gómez Gramuglio, GervasioAutoridad Unican; Palencia Cortezón, José Enrique; Rodrigo Anoro, TeresaAutoridad Unican; Ruiz Jimeno, AlbertoAutoridad Unican; Scodellaro, LucaAutoridad Unican; Vila Álvarez, Iván Autoridad Unican; Vilar Cortabitarte, RocíoAutoridad Unican; Vizán García, Jesús ManuelAutoridad Unican
Fecha
2011-12
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© 2011 American Physical Society
Publicado en
Physical Review Letters, 2011, 107(26), 261802
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American Physical Society
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Resumen/Abstract
We present the first measurement of polarization and CP-violating asymmetries in a B0s decay into two light vector mesons, B0s???, and an improved determination of its branching ratio using 295 decays reconstructed in a data sample corresponding to 2.9??fb?1 of integrated luminosity collected by the CDF experiment at the Fermilab Tevatron collider. The fraction of longitudinal polarization is determined to be fL=0.348±0.041(stat)±0.021(syst), and the branching ratio B(B0s???)=[2.32±0.18(stat)±0.82(syst)]×10?5. Asymmetries of decay angle distributions sensitive to CP violation are measured to be Au=?0.007±0.064(stat)±0.018(syst) and Av=?0.120±0.064(stat)±0.016(syst).
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