Measurement of the Bs mixing parameters from the flavor-tagged decay Bs->JpsiPhi

Likelihood Scans


NO CONSTRAINT on delta_i at all, this is needed for for a meaningful averaging with CDF's fit done in the same way.

Three-dimensional likelihood scan of the Delta(G) vs. phi_s space for fixed values of ct (i.e., slices in lifetime). Name of the file has lifetime in um (fixed). Each file has 9 columns corresponding to the following:

dummy phi_s loglikehood_min delta_1 (delta_1-delta_2) ct(in cm) deltaG(ps^-1) phi_s deltaM_s


"Round 3" - as agreed on with CDF, start with two-dim likelihood scans of Delta(Gamma_s) vs. phi_s, allowing tau_bar(B_s) to float (as well as the phases, i.e., lift the phase constraints of the paper). Fixed values of Delta(Gamma_s) in ps-1 (i.e., slices in Delta(Gamma_s)). As above, each file has 9 columns corresponding to the following:

dummy phi_s loglikehood_min delta_1 (delta_1-delta_2) ct(in cm) deltaG(ps^-1) phi_s deltaM_s

Most recent scans

January 17, 2009: most recent scans, allowing Delta_m_s to vary according to Gaussian constraint; values as used
for combination results in D0 Note 5928-CONF

July 2008, replaced by scans that address alleviating problems of finding local minima. Scan files are same format as above, collected here.

Results

2-dim likelihood scans, HFAG result of D0 + CDF combination
Daria Zieminska, daria@indiana.edu, Avdhesh Chandra, avdhesh@fnal.gov; and D0 HFAG rep. Rick Van Kooten, rvankoot@indiana.edu.
Last updated Jan 17, 2009; RvK