Measurement of the B¯s° meson lifetime in Dsâºπâ» decays.
Phys Rev Lett
; 113(17): 172001, 2014 Oct 24.
Article
en En
| MEDLINE
| ID: mdl-25379914
ABSTRACT
We present a measurement of the ratio of the B¯s° meson lifetime, in the flavor-specific decay to Dsâºπâ», to that of the B¯° meson. The pp collision data used correspond to an integrated luminosity of 1 fb(-1), collected with the LHCb detector, at a center-of-mass energy of 7 TeV. Combining our measured value of 1.010±0.010±0.008 for this ratio with the known B¯° lifetime, we determine the flavor-specific B¯s° lifetime to be τ(B¯s° )=1.535±0.015±0.014 ps, where the uncertainties are statistical and systematic, respectively. This is the most precise measurement to date, and is consistent with previous measurements and theoretical predictions.
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Colección:
01-internacional
Base de datos:
MEDLINE
Idioma:
En
Revista:
Phys Rev Lett
Año:
2014
Tipo del documento:
Article
País de afiliación:
Países Bajos