We report an indirect search for nonstandard model physics using the flavor-changing neutral current decays B -> K(*)mu(+)mu(-). We reconstruct the decays and measure their angular distributions, as a function of q(2) = M(mumu)(2)c(2), where M(mumu) is the dimuon mass, in p (p) over bar collisions at root s = 1.96 Tev using a data sample corresponding to an integrated luminosity of 6.8 fb(-1). The transverse polarization asymmetry A(T)((2)) and the time-reversal-odd charge-and-parity asymmetry A(im) are measured for the first time, together with the K* longitudinal polarization fraction F-L and the muon forward-backward asymmetry A(FB) for the decays B-0 -> K*(0)mu(+)mu(-) and B+ -> K*(+)mu(+)mu(-). The B -> K*mu(+)mu(-) forward-backward asymmetry in the most sensitive kinematic regime, 1 <= q(2) < 6 GeV(2)/c(2), is measured to be A(FB) 0.29(-0.23)(+0.20) (stat) +/- 0.07 (syst), the most precise result to date. No deviations from the standard model predictions are observed.

Measurements of the Angular Distributions in the Decays B -> K(*)mu(+)mu(-) at CDF

CIOCCI, MARIA AGNESE;DONATI, SIMONE;F. Ruffini;
2012-01-01

Abstract

We report an indirect search for nonstandard model physics using the flavor-changing neutral current decays B -> K(*)mu(+)mu(-). We reconstruct the decays and measure their angular distributions, as a function of q(2) = M(mumu)(2)c(2), where M(mumu) is the dimuon mass, in p (p) over bar collisions at root s = 1.96 Tev using a data sample corresponding to an integrated luminosity of 6.8 fb(-1). The transverse polarization asymmetry A(T)((2)) and the time-reversal-odd charge-and-parity asymmetry A(im) are measured for the first time, together with the K* longitudinal polarization fraction F-L and the muon forward-backward asymmetry A(FB) for the decays B-0 -> K*(0)mu(+)mu(-) and B+ -> K*(+)mu(+)mu(-). The B -> K*mu(+)mu(-) forward-backward asymmetry in the most sensitive kinematic regime, 1 <= q(2) < 6 GeV(2)/c(2), is measured to be A(FB) 0.29(-0.23)(+0.20) (stat) +/- 0.07 (syst), the most precise result to date. No deviations from the standard model predictions are observed.
2012
T., Aaltonen; B. A., Gonzalez; S., Amerio; D., Amidei; A., Anastassov; A., Annovi; J., Antos; G., Apollinari; J. A., Appel; A., Apresyan; T., Arisawa;...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/829021
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