ep-elastic kinematics and kinematic corrections.

From: Eugene J. Geis (Eugene.Geis@asu.edu)
Date: Mon Jan 02 2006 - 18:53:05 EST


Hello Blast,

Apologies for the premature email: Chi is correct. My faulty calculation of a missing mass cut
eliminated a great deal of my statistics. The discrepancy in the theta_e, theta_p that corresponds to the
mean of thetae-theta_e(theta_p) = -0.44 and thetap-theta_p(theta_e) = -0.34 is about twice the
original mean from the last crunch. As Chi has quoted, the theta deviation is worse with this library
than with last year's original crunch of the H2 data.

This necessitated the employment of a X^2 minimization in Q2 and then calculating the proper
momenta and theta by event. The hard offsets still show discrete jumps by TOF which is why the new
offsets are hard and added by charge and TOF. I'll have plots out with the differences in the dataset
using the kinematic offsets.

The offsets should be added like so:

pe += pe_offset[electron][sector][tof];

and

thetap += tp_offset[electron][sector][tof];

The offsets are:

PeLeft[] = {0.0122,0.0131,0.0229,0.0209,0.0226,0.0229,0.0238,
 0.0258,0.0247,0.0237,0.0219,0.0216,0.0230,0.0215,0.0193, 0.0187};

PpLeft[] = { -0.0078,-0.0035,-0.0008,-0.0079,-0.0176,-0.0179,
-0.0162,-0.0207,-0.0249,-0.0284,-0.0280,-0.0255,-0.0269,-0.0264,
-0.0156, -0.0102};

PeRight[] = {-0.0152,-0.0159,-0.0169, -0.0150,-0.0138,-0.0150,
-0.0349,-0.0425,-0.0387,-0.0342, -0.0293, -0.0273,-0.0194,-0.0121,
 -0.0120,-0.0127};

PpRight[] = {0.0401, 0.0396, 0.0419,0.0428,0.0400,0.0393, 0.0448,
0.0476,0.0443,0.0453,0.0476, 0.0512, 0.0465,0.0414,0.0389,0.0346};

TeLeft[] = {0.3109, 0.2367,0.6002,0.3758,0.3338,0.2095,0.1210,
0.0776, -0.1202,-0.2350, -0.3792,-0.5872,-0.6170,-0.7477,-0.8057,
0.1826};

TpLeft[] = {1.2124,0.8412,0.5218,0.8061,1.2637,1.1962,0.9470,
1.0394,1.1992,1.1599,1.2609,1.2712,1.4409,1.4654,1.0485,0.7716};

TeRight[] = {-0.7944,-0.8158,-0.9546,-0.7797,-0.7888,-0.8689,
-1.7485, -1.9771,-1.6745,-1.3052, -1.2031,-1.1692,-0.9293,-0.6885,
-0.7704,-0.9981};

TpRight[] = {0.0474,0.1496,0.0141,0.1354,0.1477,0.3213,0.5629,
0.5377,0.3544,0.2760, 0.2538,0.2099,0.1363,0.0845,0.1247, 0.1422};

in long form:

electron in Left Sector:
        TOF = 0 offset = 0.0122
        TOF = 1 offset = 0.0131
        TOF = 2 offset = 0.0229
        TOF = 3 offset = 0.0209
        TOF = 4 offset = 0.0226
        TOF = 5 offset = 0.0229
        TOF = 6 offset = 0.0238
        TOF = 7 offset = 0.0258
        TOF = 8 offset = 0.0247
        TOF = 9 offset = 0.0237
        TOF = 10 offset = 0.0219
        TOF = 11 offset = 0.0216
        TOF = 12 offset = 0.0230
        TOF = 13 offset = 0.0215
        TOF = 14 offset = 0.0193
        TOF = 15 offset = 0.0187

proton in Left Sector:
        TOF = 0 offset = -0.0078
        TOF = 1 offset = -0.0035
        TOF = 2 offset = -0.0008
        TOF = 3 offset = -0.0079
        TOF = 4 offset = -0.0176
        TOF = 5 offset = -0.0179
        TOF = 6 offset = -0.0162
        TOF = 7 offset = -0.0207
        TOF = 8 offset = -0.0249
        TOF = 9 offset = -0.0284
        TOF = 10 offset = -0.0280
        TOF = 11 offset = -0.0255
        TOF = 12 offset = -0.0269
        TOF = 13 offset = -0.0264
        TOF = 14 offset = -0.0156
        TOF = 15 offset = -0.0102

electron in Right Sector:
        TOF = 0 offset = -0.0152
        TOF = 1 offset = -0.0159
        TOF = 2 offset = -0.0169
        TOF = 3 offset = -0.0150
        TOF = 4 offset = -0.0138
        TOF = 5 offset = -0.0150
        TOF = 6 offset = -0.0349
        TOF = 7 offset = -0.0425
        TOF = 8 offset = -0.0387
        TOF = 9 offset = -0.0342
        TOF = 10 offset = -0.0293
        TOF = 11 offset = -0.0273
        TOF = 12 offset = -0.0194
        TOF = 13 offset = -0.0121
        TOF = 14 offset = -0.0120
        TOF = 15 offset = -0.0127

proton in Right Sector:
        TOF = 0 offset = 0.0401
        TOF = 1 offset = 0.0396
        TOF = 2 offset = 0.0419
        TOF = 3 offset = 0.0428
        TOF = 4 offset = 0.0400
        TOF = 5 offset = 0.0393
        TOF = 6 offset = 0.0448
        TOF = 7 offset = 0.0476
        TOF = 8 offset = 0.0443
        TOF = 9 offset = 0.0453
        TOF = 10 offset = 0.0476
        TOF = 11 offset = 0.0512
        TOF = 12 offset = 0.0465
        TOF = 13 offset = 0.0414
        TOF = 14 offset = 0.0389
        TOF = 15 offset = 0.0346

electron THETA in Left Sector:
        TOF = 0 offset = 0.3109
        TOF = 1 offset = 0.2367
        TOF = 2 offset = 0.6002
        TOF = 3 offset = 0.3758
        TOF = 4 offset = 0.3338
        TOF = 5 offset = 0.2095
        TOF = 6 offset = 0.1210
        TOF = 7 offset = 0.0776
        TOF = 8 offset = -0.1202
        TOF = 9 offset = -0.2350
        TOF = 10 offset = -0.3792
        TOF = 11 offset = -0.5872
        TOF = 12 offset = -0.6170
        TOF = 13 offset = -0.7477
        TOF = 14 offset = -0.8057
        TOF = 15 offset = 0.1826

proton THETA in Left Sector:
        TOF = 0 offset = 1.2124
        TOF = 1 offset = 0.8412
        TOF = 2 offset = 0.5218
        TOF = 3 offset = 0.8061
        TOF = 4 offset = 1.2637
        TOF = 5 offset = 1.1962
        TOF = 6 offset = 0.9470
        TOF = 7 offset = 1.0394
        TOF = 8 offset = 1.1992
        TOF = 9 offset = 1.1599
        TOF = 10 offset = 1.2609
        TOF = 11 offset = 1.2712
        TOF = 12 offset = 1.4409
        TOF = 13 offset = 1.4654
        TOF = 14 offset = 1.0485
        TOF = 15 offset = 0.7716

electron THETA in Right Sector:
        TOF = 0 offset = -0.7944
        TOF = 1 offset = -0.8158
        TOF = 2 offset = -0.9546
        TOF = 3 offset = -0.7797
        TOF = 4 offset = -0.7888
        TOF = 5 offset = -0.8689
        TOF = 6 offset = -1.7485
        TOF = 7 offset = -1.9771
        TOF = 8 offset = -1.6745
        TOF = 9 offset = -1.3052
        TOF = 10 offset = -1.2031
        TOF = 11 offset = -1.1692
        TOF = 12 offset = -0.9293
        TOF = 13 offset = -0.6885
        TOF = 14 offset = -0.7704
        TOF = 15 offset = -0.9981

proton THETA in Right Sector:
        TOF = 0 offset = 0.0474
        TOF = 1 offset = 0.1496
        TOF = 2 offset = 0.0141
        TOF = 3 offset = 0.1354
        TOF = 4 offset = 0.1477
        TOF = 5 offset = 0.3213
        TOF = 6 offset = 0.5629
        TOF = 7 offset = 0.5377
        TOF = 8 offset = 0.3544
        TOF = 9 offset = 0.2760
        TOF = 10 offset = 0.2538
        TOF = 11 offset = 0.2099
        TOF = 12 offset = 0.1363
        TOF = 13 offset = 0.0845
        TOF = 14 offset = 0.1247
        TOF = 15 offset = 0.1422



This archive was generated by hypermail 2.1.2 : Mon Feb 24 2014 - 14:07:32 EST