T. Burnett: PSF status 3Feb06 1

DC2 PSF StatusDC2 PSF Status

The function:

8 bins in energy (2/decade), 6 in cos() (0.1)

Two classes A: GoodEvent3;C: GoodEvent1 && ! GoodEvent3;

Apply scaling function of energy to angular deviations to make the 68% values for approximately 1. (The “Atwood function)

Objective: to find reasonable parametric representation in E and cos of and

2

211 112,;

1

d

dN

N

T. Burnett: PSF status 3Feb06 2

Fits to the functionFits to the function

8 bins in energy (2/decade), 8 in cos() (0.1)

Two classes so far differ in CTBCORE cut. also (front/back)A: GoodEvent3;C: GoodEvent1 && ! GoodEvent3;

Combine the two data sets

Apply scaling function of energy to make 68% values approximately 1.

Stop fit at 10 (scaled) sigma

T. Burnett: PSF status 3Feb06 3

Class A front: Near normal fits for all Class A front: Near normal fits for all energiesenergies

T. Burnett: PSF status 3Feb06 4

The parameters: polynomial fitsThe parameters: polynomial fits

68%

95%

T. Burnett: PSF status 3Feb06 5

Angular dependence: mildAngular dependence: mild

class A front

sigmaaf gammaaf

T. Burnett: PSF status 3Feb06 6

What about those Class B guys?What about those Class B guys?

Clearly energy-dependent

T. Burnett: PSF status 3Feb06 7

Check integral distributions:Check integral distributions:compare A, C frontcompare A, C front

currently a mystery

factor of 2!

T. Burnett: PSF status 3Feb06 8

To DoTo Do

Continue checking

Decide on strategy: Table look-up

Smooth functions