Bc → J/ψ+μ+ν cross section with 1 fb-1 data

This web page summarizes the results of the ratio of the production cross section times branching fraction of Bc± → J/ψ+&mu±
relative to B± → J/ψ+K± for two pT(B) cuts. The measurement is done with in 1 fb-1 of exclusive J/ψ data.

The results have been approved by B Group Meeting as of March 5, 2009.

We measure at pT(B) > 4 GeV/c and and at pT(B) > 6 GeV/c cuts as:


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

CDF Run I (with L=110 pb-1) and Run II (with L=360 pb-1) results of the ratio of the production cross section times
branching fraction of Bc± → J/ψ+l±+ν relative to B± → J/ψ+K± are:

Run I result was published in Phys.Rev.D58,112004(1998): here
Run II Bc → J/ψ+μ+ν decay channel measurement (L=360 pb-1) public web page is here
Run II Bc → J/ψ+e+ν decay channel measurement (L=360 pb-1) public web page is here


Bc invariant mass distribution using the J/ψ+μ decays channel.

Below are the eps and jpeg versions of figures meant for download.