Dear Tjeerd,

I send my apologies for the Bfys meeting which unfortunately clashes with analysis week.

I have an issue with Fig 1a. I find the fit very poor, which may be due to a wrong model. If you look between 5.55 and 5.6 GeV, the data undershoots the fit. I am also missing a partially reconstructed background from B(s)->J/psi eta X (where X could be a K0) below 5.2 GeV. Including this could make the uncertain B peak much larger. I see no mention of partially reconstructed backgrounds in the systematic section (the ana note is also quiet). But since the Bd->J/psieta BF is known, why not fix it in the fit?

Similarly in Fig 3 they include the J/psiK* reflection, but ignore partial backgrounds from B+->J/psiK2pi, Bs->J/psiPhipipi... and where does the very narrow shape of the K* come from?

Details: Line 22: or a pipi system Line 70-71: the ) should go before tails, but I think quantum em can be removed. Line 83: "As previously mentioned, the" : remove Line 88: I find decay times in mum puzzling. What about "the decay time of the... excess of 150 mum/c."? (tau is not needed) Line 130: _a_ partial Line 152: simulation -> simulated data Line 165: a B0 signal Line 169: nominal value [19] Line 196: which acceptance? Time? Geometry? Line 213+ : Is it obvious that arXiv:1204.1735 (hep-ph) http://arxiv.org/abs/1204.1735 has no effect on the two Bs ratios?

Cheers,

Patrick

On 01/25/2013 03:05 PM, Tjeerd Ketel wrote:

Bfys Meeting Friday 1 Februaty at 9:45 in N328 and on Vidyo

I am looking for a volunteer to introduce this paper

Paper introduction and discussion: 9:45 "Observation of the B0s to psi(2S) eta and B0(s) to psi(2S) pi+ pi- decays" http://cds.cern.ch/record/1508049

Best regards, Tjeerd

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