ZEUS SVX95 F2 data - systematic error checks and values From DESY 98-xxx The systematic checks are listed, followed by an explanation of how to read the appended data file which contains the shifts to the individual F2 values. Systematic checks: maximum change(%) ================= ================= 1 + 0.5mm shift SRTD x 2 2 - 0.5mm shift SRTD x 1 3 + 0.5mm shift SRTD y 2 4 - 0.5mm shift SRTD y 2 5 fix all vertices 6 6 +2.->+1. % energy scale 7 7 -2.->-1. % energy scale 8 8 srtd x apart by 1 mm 2 9 srtd x close by 1 mm 2 10 srtd y apart by 1 mm 3 11 srtd y close by 1 mm 4 12 weight sat. events down by 50% 1 13 php*1.3 7 14 php*0.7 7 15 hadron energy scale *1.03 1 16 hadron energy scale *0.97 2 17 EF efficiency reduced by 2.5-1% 2 18 EF efficiency increased by 2.5-1% 2 19 weight up sat. events by 100% 1 20 boxcut 12.8 / 7.8 3 21 boxcut 13.2 / 8.2 7 additional systematic errors to be added: ========================================= normalisation error (lumi error (1%) + trigger eff. (1%)) : 1.5 % e,p beamgas subtraction error : 1. % ambiguous SRTD hits (chap. 2.5 ZEUS-note) : 2. % (Q2<2.5) ------------------------------------------------------------------ Read the data in the following way: real x(44),y(44),q2(44),f2stat(44),f2sys(44,0:21) open(unit=66,name='f2sys.dat',form='FORMATTED',status='NEW') read(66,*) nsys do j=1,44 read(66,*) x(j),y(j), q2(j), & f2stat(j) , (f2sys(j,k),k=0,nsys-1) enddo close(66) x(j),q2(j),y(j) = x,q2,y values for bin j )j=1,44) f2sys(j,0) = f2 value (j=1,44) f2stat(j) = statistical error for F2 value (bin j ) f2sys(j,k) = f2 value for systematic check k (see above) and bin j --------------------------------------------------------------------- 22 1.20000E-05 0.553921 0.600000 3.00000E-02 0.531255 0.532009 0.532009 0.539532 0.528245 0.512855 0.512443 0.549312 0.526740 0.538029 0.513948 0.541035 0.527245 0.510294 0.552215 0.538769 0.528249 0.520107 0.543697 0.533283 0.513928 0.492672 1.90000E-05 0.524767 0.900000 3.00000E-02 0.652513 0.653727 0.651297 0.646432 0.657988 0.681340 0.625149 0.684741 0.658594 0.647040 0.641567 0.678052 0.647555 0.614710 0.690317 0.656131 0.647689 0.642346 0.667501 0.655021 0.653590 0.643385 2.60000E-05 0.383484 0.900000 2.30000E-02 0.654724 0.657291 0.650876 0.657291 0.649165 0.665274 0.630349 0.679525 0.652586 0.650876 0.648310 0.671400 0.648463 0.646142 0.663307 0.656860 0.655151 0.642759 0.667596 0.657901 0.651763 0.641440 3.60000E-05 0.276960 0.900000 2.20000E-02 0.574138 0.573649 0.576096 0.579030 0.579518 0.547241 0.558489 0.597614 0.575114 0.574138 0.574138 0.591253 0.570402 0.572818 0.575459 0.574138 0.574138 0.564753 0.583841 0.576025 0.567155 0.538757 2.80000E-05 0.514355 1.30000 2.90000E-02 0.715963 0.710510 0.715963 0.713237 0.717595 0.700678 0.691971 0.753587 0.705057 0.721419 0.705603 0.721963 0.709555 0.665152 0.766774 0.723183 0.704299 0.704486 0.732430 0.719211 0.722357 0.718268 3.80000E-05 0.378998 1.30000 2.30000E-02 0.716806 0.716806 0.718397 0.715615 0.725938 0.735027 0.694567 0.739041 0.719587 0.722763 0.704496 0.734676 0.710523 0.704835 0.728777 0.718782 0.716016 0.703284 0.730855 0.719990 0.713687 0.709283 5.30000E-05 0.271735 1.30000 2.20000E-02 0.714834 0.712623 0.711518 0.716307 0.710781 0.722633 0.685725 0.738416 0.711518 0.712623 0.696411 0.731783 0.708529 0.711951 0.717716 0.714834 0.714834 0.703564 0.726857 0.718028 0.714484 0.707952 8.00000E-05 0.180024 1.30000 1.70000E-02 0.626302 0.628588 0.624873 0.626302 0.629728 0.622092 0.608301 0.639730 0.628588 0.625159 0.613730 0.650872 0.625774 0.625959 0.626644 0.626302 0.626302 0.617468 0.635396 0.626567 0.629565 0.613537 1.60000E-04 9.00121E-02 1.30000 1.60000E-02 0.559043 0.559591 0.561223 0.557133 0.560955 0.567984 0.598875 0.520846 0.559317 0.559317 0.545674 0.574596 0.561294 0.558879 0.559206 0.559043 0.559043 0.552217 0.566042 0.557924 0.552225 0.542515 3.90000E-05 0.539718 1.90000 3.60000E-02 0.914926 0.914258 0.914926 0.914258 0.915594 0.923768 0.888195 0.942328 0.930297 0.896882 0.908911 0.918933 0.917657 0.860366 0.969486 0.925032 0.903473 0.896132 0.935951 0.913568 0.916564 0.915310 5.30000E-05 0.397151 1.90000 2.80000E-02 0.852119 0.848697 0.852605 0.847719 0.846252 0.823011 0.837941 0.857982 0.851630 0.849674 0.827186 0.865318 0.848595 0.836053 0.868184 0.852606 0.851145 0.836513 0.868838 0.853891 0.848765 0.850565 7.50000E-05 0.280653 1.90000 2.50000E-02 0.742308 0.737751 0.740789 0.738257 0.742308 0.757875 0.744335 0.759522 0.742308 0.740282 0.728130 0.760539 0.740885 0.739110 0.745506 0.742308 0.742308 0.730731 0.754786 0.743022 0.748573 0.750421 1.10000E-04 0.191354 1.90000 2.30000E-02 0.740116 0.737563 0.742669 0.737137 0.739690 0.742631 0.718836 0.764377 0.738839 0.742248 0.715857 0.754585 0.738386 0.739861 0.740371 0.740116 0.740116 0.729688 0.750848 0.740985 0.735974 0.739666 2.20000E-04 9.56772E-02 1.90000 1.90000E-02 0.635893 0.633483 0.632794 0.633139 0.634172 0.620753 0.654830 0.586316 0.637273 0.630729 0.620745 0.642093 0.639055 0.635790 0.635997 0.635893 0.635893 0.628152 0.643829 0.634327 0.634569 0.629202 5.40000E-05 0.512890 2.50000 3.90000E-02 0.963781 0.966084 0.963013 0.962245 0.962245 0.946525 0.965313 0.976840 0.958405 0.972224 0.951494 0.978373 0.961850 0.914872 1.01269 0.976856 0.946859 0.947147 0.985890 0.964750 0.964234 0.960872 7.30000E-05 0.379398 2.50000 2.90000E-02 0.908944 0.906895 0.907920 0.910480 0.908432 0.936269 0.878732 0.931986 0.910480 0.899726 0.903823 0.909453 0.904545 0.894531 0.923358 0.909456 0.907411 0.891794 0.926759 0.911161 0.911398 0.911725 1.00000E-04 0.276960 2.50000 2.70000E-02 0.869926 0.871370 0.874728 0.869926 0.871370 0.862414 0.830515 0.870404 0.877138 0.868484 0.863197 0.867042 0.867005 0.866155 0.873697 0.869926 0.869926 0.855755 0.884575 0.871395 0.869111 0.879930 1.60000E-04 0.173100 2.50000 2.30000E-02 0.771047 0.771471 0.774871 0.774447 0.774447 0.770325 0.768920 0.815698 0.775727 0.776999 0.763817 0.786360 0.768788 0.770664 0.771431 0.771047 0.771047 0.760148 0.782258 0.772184 0.773923 0.774370 3.00000E-04 9.23201E-02 2.50000 2.30000E-02 0.725305 0.729011 0.725718 0.731485 0.722422 0.731097 0.744250 0.668466 0.728185 0.726951 0.711714 0.739311 0.726933 0.725305 0.725305 0.725305 0.725305 0.716463 0.734364 0.724492 0.726756 0.733254 7.30000E-05 0.531157 3.50000 5.00000E-02 1.14034 1.14691 1.13267 1.15020 1.14143 1.12844 1.11405 1.16334 1.15896 1.13705 1.14143 1.14253 1.13884 1.10340 1.17728 1.15354 1.12275 1.11747 1.16650 1.14109 1.13960 1.14129 9.80000E-05 0.395658 3.50000 3.50000E-02 0.995253 0.998010 1.00215 0.998010 0.999393 1.00245 0.991112 1.01734 1.00767 0.998010 0.995253 1.01113 0.994459 0.985530 1.00498 0.995253 0.993873 0.977205 1.01471 0.995651 0.991772 0.998020 1.40000E-04 0.276960 3.50000 3.10000E-02 0.944807 0.945421 0.941145 0.947245 0.947245 0.949267 0.938704 0.967388 0.949692 0.935652 0.941755 0.960680 0.941816 0.943896 0.945718 0.944807 0.944807 0.929446 0.960680 0.946308 0.944241 0.946479 2.10000E-04 0.184640 3.50000 2.60000E-02 0.838522 0.836654 0.837121 0.837121 0.832916 0.841561 0.819836 0.849263 0.842262 0.828712 0.830113 0.840392 0.838964 0.838242 0.838803 0.838522 0.838522 0.826697 0.850689 0.838303 0.839000 0.842228 4.10000E-04 9.45719E-02 3.50000 2.10000E-02 0.662510 0.664153 0.667028 0.662099 0.664975 0.649075 0.701916 0.617768 0.670308 0.661689 0.656763 0.674004 0.664398 0.662386 0.662633 0.662510 0.662510 0.654453 0.670765 0.661569 0.667678 0.667333 1.00000E-04 0.498529 4.50000 4.30000E-02 1.15969 1.15969 1.16472 1.16137 1.15298 1.16547 1.13705 1.16389 1.16137 1.15382 1.14460 1.17394 1.16034 1.13776 1.18162 1.16641 1.15549 1.13701 1.18508 1.15937 1.16014 1.16283 1.70000E-04 0.293252 4.50000 3.10000E-02 1.00470 1.00907 1.00470 1.00415 1.00524 1.00880 0.976853 1.04729 1.01235 1.00361 0.993233 1.01398 0.996808 1.00110 1.00831 1.00470 1.00470 0.988311 1.02222 1.00870 1.00582 1.00958 2.80000E-04 0.178046 4.50000 3.00000E-02 0.912134 0.913292 0.914442 0.910979 0.915600 0.896600 0.890196 0.934645 0.916749 0.909247 0.913292 0.919641 0.909458 0.911787 0.912481 0.912134 0.912134 0.899288 0.925351 0.913480 0.913283 0.909686 5.40000E-04 9.23201E-02 4.50000 2.20000E-02 0.663664 0.661344 0.665058 0.661808 0.665058 0.685156 0.712861 0.607972 0.665058 0.657631 0.657167 0.669232 0.664224 0.663664 0.663664 0.663664 0.663664 0.655612 0.671920 0.663384 0.666431 0.661370 1.40000E-04 0.474789 6.00000 5.50000E-02 1.30511 1.30388 1.30388 1.30388 1.30756 1.29598 1.31124 1.29775 1.32106 1.30020 1.30266 1.30634 1.30287 1.28631 1.32391 1.31125 1.29773 1.28009 1.33373 1.30623 1.30511 1.30542 2.20000E-04 0.302139 6.00000 3.90000E-02 1.08640 1.08480 1.08321 1.08560 1.08241 1.07839 1.04888 1.09518 1.09198 1.07522 1.08081 1.09198 1.08111 1.08257 1.09024 1.08640 1.08640 1.06810 1.10534 1.08907 1.08367 1.08723 3.70000E-04 0.179650 6.00000 3.80000E-02 1.00206 1.00781 0.997128 1.00453 0.998772 1.00257 0.983153 1.01440 1.01274 0.993017 0.985619 1.01110 0.993781 1.00182 1.00231 1.00206 1.00206 0.987936 1.01659 1.00626 1.00124 1.00311 7.10000E-04 9.36204E-02 6.00000 2.80000E-02 0.752725 0.746168 0.751414 0.748791 0.752069 0.706621 0.800591 0.691747 0.759281 0.740923 0.746824 0.750103 0.752873 0.752725 0.752725 0.752725 0.752725 0.743600 0.762074 0.752649 0.753997 0.748867 1.80000E-04 0.461601 7.50000 5.80000E-02 1.21010 1.21337 1.19538 1.20519 1.20683 1.18148 1.20683 1.23136 1.19865 1.19375 1.19375 1.21010 1.20929 1.19941 1.22079 1.21496 1.21010 1.18574 1.23549 1.21051 1.21279 1.21217 3.60000E-04 0.230800 7.50000 3.60000E-02 0.918043 0.921605 0.926048 0.921605 0.926048 0.953217 0.903810 0.974090 0.935835 0.919824 0.915374 0.936725 0.911820 0.917511 0.918575 0.918043 0.918043 0.904268 0.932245 0.921187 0.919383 0.916080 8.80000E-04 9.44183E-02 7.50000 4.00000E-02 0.810027 0.826827 0.810027 0.813623 0.823230 0.838349 0.850828 0.775226 0.819626 0.811226 0.825628 0.820825 0.818307 0.810027 0.810027 0.810027 0.810027 0.800185 0.820112 0.805951 0.810788 0.805591 2.20000E-04 0.453208 9.00000 6.10000E-02 1.29573 1.29416 1.30042 1.29416 1.30199 1.23682 1.26600 1.29887 1.31451 1.28478 1.29887 1.29573 1.30168 1.28516 1.30630 1.29894 1.28933 1.27117 1.32291 1.29278 1.29151 1.29385 4.30000E-04 0.231874 9.00000 3.80000E-02 0.957147 0.953511 0.951693 0.954420 0.954420 0.942773 0.943512 0.978960 0.956238 0.938059 0.943512 0.952603 0.960437 0.957147 0.957147 0.957147 0.957147 0.942780 0.971964 0.955512 0.957157 0.956932 1.10000E-03 9.06416E-02 9.00000 3.90000E-02 0.817658 0.809741 0.817658 0.819923 0.806349 0.833547 0.819923 0.757719 0.826710 0.812003 0.800694 0.832359 0.819791 0.817658 0.817658 0.817658 0.817658 0.807785 0.827772 0.816596 0.820610 0.819890 2.80000E-04 0.474789 12.0000 5.70000E-02 1.30609 1.30467 1.30467 1.30894 1.30040 1.36372 1.28759 1.30751 1.31036 1.29613 1.30182 1.30467 1.30021 1.29669 1.31548 1.30751 1.30181 1.28125 1.33343 1.30904 1.30751 1.30868 5.60000E-04 0.237395 12.0000 4.00000E-02 1.08360 1.08446 1.08530 1.08275 1.08275 1.09733 1.02648 1.11770 1.09297 1.07934 1.08189 1.08957 1.08703 1.08360 1.08360 1.08360 1.08360 1.06728 1.10043 1.08189 1.08275 1.08328 1.40000E-03 9.49579E-02 12.0000 4.40000E-02 0.956228 0.952764 0.957385 0.956228 0.956228 0.946524 1.00936 0.923892 0.962004 0.942369 0.958542 0.951608 0.968623 0.956228 0.956228 0.956228 0.956228 0.944671 0.968076 0.950148 0.955073 0.954289 3.90000E-04 0.482905 17.0000 5.70000E-02 1.31068 1.30789 1.31207 1.31068 1.31068 1.26590 1.30232 1.33436 1.31068 1.31068 1.31347 1.31207 1.30836 1.30184 1.31952 1.31629 1.30506 1.28428 1.33819 1.31184 1.30789 1.31207 7.90000E-04 0.238396 17.0000 3.80000E-02 1.08698 1.08859 1.09099 1.08778 1.08859 1.05918 1.06372 1.13110 1.09982 1.08538 1.09099 1.08859 1.08948 1.08650 1.08747 1.08698 1.08698 1.07068 1.10378 1.08574 1.08859 1.08618 1.90000E-03 9.91227E-02 17.0000 4.50000E-02 0.930847 0.934505 0.929627 0.933286 0.929627 0.933287 0.972326 0.855208 0.938163 0.925968 0.934505 0.925968 0.937122 0.930847 0.930847 0.930847 0.932069 0.919609 0.942362 0.927743 0.930847 0.929627 ------------------------------------------------------------------------------