Measurements of the Angular Distributions in the Decays B→K(*)μ+μ- at CDF
Name
Paus-2012-Measurements of the Angular Distributions.pdf
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Author(s)
Gomez-Ceballos, Guillelmo
Goncharov, Maxim
Makhoul, Khaldoun
Paus, Christoph M. E.
Bauer, Gerry P
Date Issued
February 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
T. Aaltonen et al. (CDF Collaboration) "Measurements of the Angular Distributions in the Decays B→K(*)μ+μ- at CDF" Physical Review Letters 108, 081807 (2012). © 2012 American Physical Society
Version
Final published version
Abstract
We report an indirect search for nonstandard model physics using the flavor-changing neutral current decays B→K(*)μ[superscript +]μ[superscript -]. We reconstruct the decays and measure their angular distributions, as a function of q[superscript 2]=Mμμ[superscript 2]c[superscript 2], where Mμμ is the dimuon mass, in pp̅ collisions at √s=1.96 TeV using a data sample corresponding to an integrated luminosity of 6.8 fb[superscript -1]. The transverse polarization asymmetry AT [superscript(2)] and the time-reversal-odd charge-and-parity asymmetry A[subscript im] are measured for the first time, together with the K* longitudinal polarization fraction FL and the muon forward-backward asymmetry A[subscript FB] for the decays B0→K*[superscript 0]μ[superscript +]μ[superscript -] and B[superscript +]→K*[superscript +]μ[superscript +]μ[superscript -]. The B→K*μ[superscript +]μ[superscript -] forward-backward asymmetry in the most sensitive kinematic regime, 1≤q[superscript 2]<6 GeV[superscript 2]/c[superscript 2], is measured to be A[subscript FB]=0.29[subscript -0.23][superscript +0.20](stat)±0.07(syst), the most precise result to date. No deviations from the standard model predictions are observed.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.081807
