B to Vector Vector Polarization in
Bd --> JPsi K* and Bd --> PhiK*

This web page summarizes the results for the the first measurement of the polarization amplitudes in B&rarr VV decays using the Two Track Trigger data. In particular we study two Bd decays modes Bd --> JPsiK* and Bd --> PhiK* and provide the first measurement of a polarization amplitude in a charmless decay at CDF.

With 360 pb-1 of data we measure:

--> summary of the results (.eps)(.tex)

--> |A0|2 Vs |A|||2 for Bd --> JPsiK* (.eps)(.gif)

--> |A0|2 Vs |A|||2 for Bd --> PhiK* (.eps)(.gif)

The results have been approved as of July 20, 2006.

A more detailed summary of the results can be found here: ps

Below are the eps and gif versions of the figures meant for downloads.

References for cited CDF, BaBar and Belle measurement:

  • The CDF Collaboration, Measurement of the Lifetime Difference between Bs Mass Eigenstates. Phys. Rev. Lett. 94 101803 (2005), (cdf results)
  • The BaBar Collaboration, Measurement of the B0 --> JPsiK*0 decay amplitudes, Phys. Rev. Lett. 87 241801 (2001).
  • The BaBar Collaboration, Measurement of the B0 --> PhiK*0 decay amplitudes, Phys. Rev. Lett. 93 231804 (2004).
  • The Belle Collaboration, Measurement of the branching fraction and decay amplitudes in B0 --> JPsiK*0 decay}, Phys. Lett. B538 11-20 (2002).
  • The Belle Collaboration, Measurement of the branching fraction and decay amplitudes in B0 --> PhiK*0 decay}, Phys.Rev.Lett. 94 221804 (2005).
  • Heavy Flavor Averaging Group. (web page)