E852 experiment

Analysis of Eta Pi0 system with the decay Eta -> Pi+ Pi- Pi0

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Date: Fri, 16 Sep 2005 From: Neal

I'd like to request a number of clarifications before I make comments on the paper itself.

1. Fig. 6b has 3 curves. You only mention 2 curves in the caption so I dont know what is what here. Please clarify.

Fig.6. Upper fig.6 is|D+|^2 wave (a), medium fig.6 |P+|^2 wave and leakage (b), bottom fig.6 relative phase (P+,D+) (c).

2. Since P+ is so important to the paper, shouldnt it be shown in Fig. 4?

P+ wave with the relative phase (P+,D+) are in Fig.6 (b),(c). In Fig.4 there are significal UNPE waves and comparing with wave sum and D+ wave.

3. Is there any difference between Fig. 4 (D+) and Fig. 6 (D+)?

No.

4. Why does the relative phase shown in Fig. 5 look different than that shown in Fig. 6? One seems to be inverted relative to the other, but I think they are measuring the same thing?

1) Phase is inverted comparing to Fig.6. 2) The points are with 100 MeV mass bins, they are calculated by the average of ambiguous solutions and lines are from MDF

5. What precisely was done in the MDF? How did you use call possible combinations of these solutions as inputs to the MDF? Did you just do a huge number of randomly chosen solutions or did you really do all possible combinations?

MDF use average 8 ambiguous solutions and average error matrix. We use standart Sasha's code. A huge number of randomly chosen combinations are used for the estimation of systematc error as we did in EtaPI- paper.

Have you written the paper in TeX? If so, perhaps you could send me a copy of the source file and I could go through and work on the English a bit. Neal

I sent tex-file and figures to you. I'll be gratefull for any yours correctins of text.

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