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final_offsets

Hee'p offsets 05/29/06

SIMC with radiation, eloss, etc turned on is shown in blue.  The data are the green and red histograms, which should overlap.

Q2=0.633 GeV2
Q2=4.51 GeV2
Q2=6.1  GeV2
Q2=7.47 GeV2

The offsets are:

Ebeam(GeV)
 P hms(GeV)
 TH hms(deg)
 P sos(GeV)
 TH sos(deg)
 dE
 dth_ss
 dp_ss
 dth_hs
 dp_hs
 dssxptar
 dhsxptar
2.038
 -1.692
 25.005
 0.874
 54.90
 0.59
 0.0
 0.48
 0.6
 0.9
 -0.0032 -0.0011
5.012
 4.116
 18.70
 -1.7227
 50.00
 0.79
 -1.0
 11.0
 0.6
 0.9
 -0.0032 -0.0011
5.766
 4.867
 16.19
 -1.6868
 51.61
 0.2
 0.0
 8.11
 0.0
 0.9
 -0.0032
-0.0011
4.021
 3.232
 22.15
 -1.588
 50.00
 -0.75
 -1.0 3.85
 1.0
 0.9
 -0.0032
-0.0011
The format of the offsets "d[variablename]" are the same as those in "heepcheck.f".  For example, for the electron in the sos
         p_e = ssp*(1-dp_ss/1000.0)
         th_e = mysstheta-dth_ss/1000.0  [rad]
         p_p = hsp*(1-dp_hs/1000.0) 
         th_p = myhstheta-dth_hs/1000.0   [rad]
         newE=e_beam*(1+dE/1000.0)
         newssxptar= ssxptar- dssxptar  [rad]
         newhsxptar=hsxptar-dhsxptar  [rad]

Heep results 03/16/06 (rev. 04/22/06)

The hpcentral offset was modified 04/22/06 to make the missing mass peaks for pi+ data line up at M_neutron.  More details are here.
The final hpcentral offset was
hpcentral = hpcentral* ( 1. + (-4.85+0.872*hpcentral)/ 1000. )
The hpcentral offsets in the tables below (dp_hs) do not contain this modification.


After fixing the problem in my hmsflags file, the offsets inserted into replay and the Analyzer are:
Ebeam(GeV)
 P hms(GeV)
 TH hms(deg)
 P sos(GeV)
 TH sos(deg)
 dE
 dth_ss
 dp_ss
 dth_hs
 dp_hs
 dssxptar
 dhsxptar
2.038
 -1.692
 25.005
 0.874
 54.90
 0.0
 0.3
 0.48
 1.0
 1.1
 -0.0032 -0.0011
5.012
 4.116
 18.70
 -1.7227
 50.00
 0.0
 -0.9
 11.0
 0.5
 1.8
 -0.0032 -0.0011
5.766
 4.867
 16.19
 -1.6868
 51.61
 0.0
 -0.4
 8.11
 0.0
 0.6
 -0.0032
-0.0011
4.021
 3.232
 22.15
 -1.588
 50.00
 0.0
 -0.8
 3.85
 1.2
 1.5
 -0.0032
-0.0011




(Results from before fixing the problem in my hmsflags file)
Ebeam(GeV)
 P hms(GeV)
 TH hms(deg)
 P sos(GeV)
 TH sos(deg)
 dE
 dth_ss
 dp_ss
 dth_hs
 dp_hs
 dssxptar
 dhsxptar
2.038
 -1.692
 25.005
 0.874
 54.90
 0.0
 0.8
 0.42
 1.0
 1.5
 0.005675 -0.0011
5.012
 4.116
 18.70
 -1.7227
 50.00
 0.0
 -0.3
 10.51
 0.2
 2.4
 0.01052 -0.0011
5.766
 4.867
 16.19
 -1.6868
 51.61
 0.0
 0.05
 6.92
 -0.05
 0.8
 0.009241 -0.0011
4.021
 3.232
 22.15
 -1.588
 50.00
 0.0
 0.0
 2.57
 0.8
 2.15
 0.00729 -0.0011

The format of the offsets "d[variablename]" are the same as those in "heepcheck.f".  For example, for the electron in the sos
         p_e = ssp*(1-dp_ss/1000.0)
         th_e = mysstheta-dth_ss/1000.0  [rad]
         p_p = hsp*(1-dp_hs/1000.0) 
         th_p = myhstheta-dth_hs/1000.0   [rad]
         newE=e_beam*(1+dE/1000.0)
         newssxptar= ssxptar- dssxptar  [rad]
         newhsxptar=hsxptar-dhsxptar  [rad]