pio and eta mass resolutions - two simulations

[Alex Dzierba <dzierba@indiana.edu>]

Dear Calorimeter Fans:

There has been some concern about discrepancies between results
on pi0 and eta mass resolutions between my simulations and Mihajlo's
simulations.   Yesterday Mihajlo sent an e-mail with tables showing the
mass resolutions in MeV and yields for pi0(eta) with both photons
in FCAL, both in BCAL and shared.  I converted his yields to %yields.

In Mihajlo's simulation there is no floor term in the calorimeter
resolutions which I normally include.  When I turn off the floor
term (set it to zero) I get results which are essentially the same
as Mihajlo as can be seen by the tables below.  We both start
with eta pio's that come from a0 and a2 resonances.

Cheers
Alex


Mihajlo simulation:
pi0     m     sigma    % yield
FCAL:  134.7   5.4     60
BCAL:  133.2   9.2     22
F/B:   133.7   7.6     18

eta
FCAL:  547.9   13.2    39
BCAL:  542.3   23.4     11
F/B:   545.8   19.5    50

Alex simulation:
pi0     m     sigma    % yield
FCAL:  134.7   4.3     55
BCAL:  133.2   8.2     21
F/B:   133.7   6.7     24

eta
FCAL:  547.9   12.6    38
BCAL:  542.3   23.4     8
F/B:   545.8   19.6    54
-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Alex R. Dzierba
Chancellor's Professor of Physics (Emeritus)
Department of Physics / Indiana U / Bloomington IN 47405 / 812-855-9421
JLab Visiting Fellow
Jefferson Lab / 12000 Jefferson Ave / Newport News, VA 23606 / 757-269-7577
Home Phone: 812-825-4063  Cell:  812-327-1881  Fax: 866-541-1263
http://www.dzre.com/alex
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~