Bounds on the CP asymmetry in like-sign dileptons from B(0)B*(0) meson decays.

Bounds on the CP asymmetry in like-sign dileptons from B(0)B*(0) meson decays.

We have measured the charge asymmetry in like-sign dilepton yields from B(0)B*(0) meson decays using the CLEO detector at the Cornell Electron Storage Ring. We find a(0)(ll) identical with[N(l(+)l(+))-N(l(-)l(-))]/[N(l(+)l(+))+N(l(-)l(-))] = +0.013+/-0.050+/-0.005. We combine this result with a prev...

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Dettagli Bibliografici
Autori principali: Jaffe, D, Mahapatra, R, Masek, G, Paar, H, Asner, D, Eppich, A, Hill, T, Morrison, R, Briere, R, Chen, G, Ferguson, T, Vogel, H, Gritsan, A, Alexander, J, Baker, R, Bebek, C, Berger, B, Berkelman, K, Blanc, F, Boisvert, V, Cassel, D, Drell, P, Duboscq, J, Ecklund, K, Ehrlich, R
Natura: Journal article
Lingua:English
Pubblicazione: 2001
Descrizione
Riassunto:We have measured the charge asymmetry in like-sign dilepton yields from B(0)B*(0) meson decays using the CLEO detector at the Cornell Electron Storage Ring. We find a(0)(ll) identical with[N(l(+)l(+))-N(l(-)l(-))]/[N(l(+)l(+))+N(l(-)l(-))] = +0.013+/-0.050+/-0.005. We combine this result with a previous, independent measurement and obtain Re(epsilon(B))/(1+ the absolute value of epsilon(B)(2)) = +0.0035+/-0.0103+/-0.0015 (uncertainties are statistical and systematic, respectively) for the CP impurity parameter, epsilon(B).

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