'98 result
R result
'99 preliminary (continuum region),
updating
| Ecm | Nhad | Nbg | Lum | eff(%) | 1+δ | R | stat. | |
|
2.60 |
5617 |
12 |
292.9 |
54.82 |
1.009 |
2.61 |
0.05 |
0.17 |
|
3.20 |
2051 |
100 |
109.3 |
64.30 |
1.447 |
2.26 |
0.07 |
0.13 |
|
3.40 |
2149 |
178 |
135.3 |
69.61 |
1.173 |
2.37 |
0.07 |
0.16 |
|
3.55 |
2672 |
216 |
200.2 |
68.40 |
1.125 |
2.30 |
0.06 |
0.16 |
|
4.60 |
1497 |
282
|
87.7 |
82.27 |
1.079 |
3.56 |
0.20 |
0.29 |
|
5.00 |
1648 |
463 |
102.3 |
84.53 |
1.068 |
3.45 |
0.32 |
0.29 |
'99 preliminary (continuum region)
|
'99 preliminary results in continuum region |
||||||||||||
|
Ecm |
>= |
N_obs |
Nsep |
f_bg |
Lum |
Eff |
f_rad |
S_ee |
N_ee |
S_tt |
N_tt |
R |
|
2.20 |
3pr |
1037 |
0 |
9.45 |
61.0 |
.3100 |
1.022 |
827.9 |
14 |
.00 |
0 |
2.95 |
|
2.20 |
2pr |
1570 |
4 |
9.45 |
61.0 |
.4711 |
1.060 |
827.9 |
19 |
.00 |
0 |
2.77 |
|
2.40 |
3pr |
1004 |
3 |
6.98 |
64.4 |
.3910 |
.993 |
696.1 |
23 |
.00 |
0 |
2.55 |
|
2.40 |
2pr |
1451 |
4 |
6.98 |
64.4 |
.5643 |
1.022 |
696.1 |
28 |
.00 |
0 |
2.50 |
|
2.50 |
3pr |
747 |
0 |
4.72 |
47.7 |
.4203 |
.997 |
641.7 |
15 |
.00 |
0 |
2.66 |
|
2.50 |
2pr |
1079 |
3 |
4.72 |
47.7 |
.5915 |
1.021 |
641.7 |
20 |
.00 |
0 |
2.63 |
|
2.60 |
3pr |
1277 |
0 |
25.40 |
87.6 |
.4584 |
1.004 |
593.6 |
16 |
.00 |
0 |
2.43 |
|
2.60 |
2pr |
1845 |
0 |
25.40 |
87.6 |
.6288 |
1.024 |
593.6 |
23 |
.00 |
0 |
2.51 |
|
2.70 |
3pr |
1001 |
1 |
6.08 |
73.4 |
.4874 |
1.008 |
550.8 |
18 |
.00 |
0 |
2.28 |
|
2.70 |
2pr |
1401 |
4 |
6.08 |
73.4 |
.6528 |
1.030 |
550.8 |
25 |
.00 |
0 |
2.31 |
|
2.80 |
3pr |
622 |
4 |
.73 |
53.5 |
.5070 |
1.014 |
512.3 |
11 |
.00 |
0 |
2.01 |
|
2.80 |
2pr |
901 |
13 |
.73 |
53.5 |
.6734 |
1.035 |
512.3 |
14 |
.00 |
0 |
2.14 |
|
2.80 |
3pr |
477 |
4 |
.88 |
38.4 |
.5114 |
1.014 |
512.3 |
12 |
.00 |
0 |
2.13 |
|
2.80 |
2pr |
688 |
13 |
.88 |
38.4 |
.6753 |
1.035 |
512.3 |
18 |
.00 |
0 |
2.25 |
|
2.90 |
3pr |
1185 |
2 |
7.04 |
96.6 |
.5269 |
1.022 |
477.8 |
20 |
.00 |
0 |
2.15 |
|
2.90 |
2pr |
1626 |
3 |
7.04 |
96.6 |
.6876 |
1.042 |
477.8 |
24 |
.00 |
0 |
2.22 |
|
3.00 |
3pr |
1638 |
6 |
2.72 |
138.1 |
.5447 |
1.025 |
446.6 |
11 |
.00 |
0 |
2.16 |
|
3.00 |
2pr |
2223 |
11 |
2.72 |
138.1 |
.7019 |
1.045 |
446.6 |
14 |
.00 |
0 |
2.23 |
|
4.60 |
3pr |
1155 |
57 |
1.80 |
90.1 |
.7670 |
1.087 |
190.9 |
11 |
3.41 |
2211 |
3.18 |
|
4.60 |
2pr |
1437 |
73 |
1.80 |
90.1 |
.8659 |
1.109 |
190.9 |
17 |
3.41 |
3489 |
3.36 |
|
4.80 |
3pr |
1094 |
20 |
1.99 |
83.3 |
.7863 |
1.076 |
175.5 |
12 |
3.31 |
2139 |
3.74 |
|
4.80 |
2pr |
1359 |
46 |
1.99 |
83.3 |
.8741 |
1.100 |
175.5 |
15 |
3.31 |
3438 |
3.87 |
Continuum region | 3.7- 4.033GeV | 4.027- 4.26GeV | 4.25- 4.50GeV
Continuum region (by Qi
Xiangrong)|
Ecm |
N_had |
Lum |
Eff |
f_rad |
S_ee |
E_ee(%) |
S_tt |
E_tt |
R |
|
2.00 |
1135.5 |
48.2 |
0.5180 |
1.029 |
607.4 |
34 |
0.000 |
0 |
2.04 |
|
2.20 |
1429.3 |
60.5 |
0.5712 |
1.040 |
502.4 |
25 |
0.000 |
0 |
2.22 |
|
2.40 |
1339.1 |
63.3 |
0.6135 |
1.034 |
422.6 |
49 |
0.000 |
0 |
2.21 |
|
2.50 |
993.4 |
47.5 |
0.6417 |
1.031 |
389.2 |
28 |
0.000 |
0 |
2.28 |
|
2.60 |
1709.0 |
86.7 |
0.6405 |
1.035 |
359.9 |
40 |
0.000 |
0 |
2.32 |
|
2.70 |
1302.1 |
72.1 |
0.6418 |
1.042 |
333.7 |
20 |
0.000 |
0 |
2.27 |
|
2.80 |
1438.7 |
88.0 |
0.6558 |
1.046 |
311.0 |
50 |
0.000 |
0 |
2.15 |
|
2.90 |
1499.9 |
94.6 |
0.6883 |
1.044 |
289.8 |
23 |
0.000 |
0 |
2.14 |
|
3.00 |
2031.0 |
136.2 |
0.7098 |
1.044 |
271.2 |
33 |
0.000 |
0 |
2.09 |
|
4.50 |
832.7 |
60.6 |
0.8512 |
1.110 |
120.9 |
10 |
3.459 |
3283 |
3.39 |
|
4.60 |
1162.3 |
89.9 |
0.8529 |
1.102 |
115.8 |
14 |
3.410 |
3220 |
3.35 |
|
4.80 |
1123.4 |
83.8 |
0.8682 |
1.086 |
106.4 |
8 |
3.310 |
3186 |
3.77 |
Some Notes:
1. S_ee is the
production cross section of Bhabha events, polar angle range is |cos|<0.85;
2. S_tt is the
production cross section of tau-pair events;
3. E_ee is the ratio
of the number of Bhabha events survived after hadron selection to the total
events produced by RADEE;
4. E_tt is the ratio
of the number of tau-pair events survived after hadron selection to the total
events produced by KORALB.
Some Plots (.ps):
1. Nbg/Nhad
.vs. Center of mass energy in the continuum region
3.7-
4.033GeV(by Huang Guangshun and Yan Wenbiao)
|
Ecm |
N_had |
Lum |
Eff |
f_rad |
S_ee |
E_ee(%) |
S_tt |
E_tt |
R |
|
3.700 |
1088.6 |
41.3 |
0.7814 |
1.094 |
178.6 |
34 |
2.288 |
3392 |
4.86 |
|
3.730 |
870.1 |
56.4 |
0.7802 |
1.514 |
175.8 |
29 |
2.472 |
3384 |
2.09 |
|
3.750 |
877.7 |
55.7 |
0.7957 |
1.301 |
173.9 |
40 |
2.574 |
3504 |
2.47 |
|
3.760 |
857.7 |
53.9 |
0.8031 |
1.161 |
173.0 |
18 |
2.641 |
3404 |
2.78 |
|
3.764 |
191.8 |
11.4 |
0.8008 |
1.113 |
172.6 |
22 |
2.646 |
3425 |
3.08 |
|
3.768 |
183.9 |
10.2 |
0.7982 |
1.075 |
172.3 |
33 |
2.662 |
3402 |
3.44 |
|
3.770 |
883.4 |
47.4 |
0.7994 |
1.069 |
172.1 |
15 |
2.683 |
3458 |
3.57 |
|
3.772 |
217.9 |
14.4 |
0.7998 |
1.062 |
171.9 |
34 |
2.678 |
3422 |
2.92 |
|
3.776 |
166.8 |
11.0 |
0.7977 |
1.082 |
171.6 |
25 |
2.708 |
3508 |
2.89 |
|
3.780 |
989.5 |
54.7 |
0.8027 |
1.104 |
171.2 |
28 |
2.723 |
3360 |
3.36 |
|
3.790 |
810.5 |
54.0 |
0.8021 |
1.236 |
170.3 |
27 |
2.767 |
3441 |
2.51 |
|
3.810 |
730.7 |
54.5 |
0.7987 |
1.226 |
168.5 |
34 |
2.846 |
3451 |
2.29 |
|
3.850 |
581.9 |
44.7 |
0.8071 |
1.168 |
165.1 |
20 |
2.983 |
3427 |
2.36 |
|
3.890 |
638.1 |
46.2 |
0.8066 |
1.132 |
161.7 |
22 |
3.091 |
3436 |
2.64 |
|
3.930 |
643.0 |
40.8 |
0.8149 |
1.105 |
158.5 |
29 |
3.186 |
3378 |
3.11 |
|
3.940 |
625.3 |
43.0 |
0.8121 |
1.100 |
157.6 |
19 |
3.207 |
3437 |
2.91 |
|
3.950 |
650.6 |
44.6 |
0.8202 |
1.088 |
156.9 |
26 |
3.223 |
3444 |
2.94 |
|
3.960 |
596.8 |
45.1 |
0.8233 |
1.083 |
156.1 |
28 |
3.248 |
3384 |
2.68 |
|
3.970 |
824.2 |
52.2 |
0.8217 |
1.076 |
155.3 |
30 |
3.262 |
3425 |
3.24 |
|
3.980 |
598.5 |
39.9 |
0.8253 |
1.065 |
154.5 |
32 |
3.297 |
3372 |
3.11 |
|
3.990 |
574.6 |
40.0 |
0.8233 |
1.050 |
153.7 |
28 |
3.285 |
3353 |
3.05 |
|
4.000 |
710.8 |
48.8 |
0.8365 |
1.026 |
153.0 |
25 |
3.320 |
3341 |
3.13 |
|
4.010 |
664.6 |
41.3 |
0.7993 |
1.016 |
152.2 |
30 |
3.329 |
3452 |
3.67 |
|
4.020 |
1004.2 |
51.0 |
0.8132 |
0.988 |
151.5 |
22 |
3.341 |
3309 |
4.56 |
|
4.027 |
891.6 |
44.3 |
0.8216 |
0.966 |
151.0 |
42 |
3.347 |
3395 |
4.74 |
|
4.030 |
730.0 |
35.1 |
0.8226 |
0.958 |
150.7 |
33 |
3.355 |
3388 |
4.94 |
|
4.033 |
879.7 |
46.2 |
0.8287 |
0.953 |
150.5 |
29 |
3.356 |
3359 |
4.52 |
Some Notes:
1. S_ee is the production cross section of
Bhabha events, polar angle range is |cos|<0.85;
2. S_tt is the production cross section of tau-pair events;
3. N_ee is number of Bhabha events survived after hadron selection by MC, from
50000 produced events;
4. N_tt is number of tau-pair events survived after hadron selection by MC, from
10000 produced events;
Some Plots (.ps):
1. Number of hadron events at each point
2. Plot:
Luminosity at each point
3. Plot:
Production cross section of Bhabha (|cos|<0.85)
4. Plot:
Production cross section of tau-pair
5. Plot:
Rough structure between 3.7-4.033GeV
4.027-4.26GeV(by Derrick Kong)
|
Ecm |
N_had |
Lum |
Eff |
f_rad |
S_ee |
E_ee(%) |
S_tt |
E_tt |
R |
|
4.040 |
961.0 |
50.4 |
0.8299 |
0.949 |
149.9 |
15 |
3.370 |
3322 |
4.55 |
|
4.050 |
980.6 |
54.1 |
0.8352 |
0.969 |
149.2 |
10 |
3.373 |
3402 |
4.23 |
|
4.060 |
866.0 |
43.1 |
0.8256 |
1.010 |
148.5 |
10 |
3.377 |
3384 |
4.58 |
|
4.070 |
640.1 |
34.6 |
0.8254 |
1.049 |
147.7 |
9 |
3.408 |
3401 |
4.08 |
|
4.080 |
542.9 |
30.3 |
0.8251 |
1.074 |
147.0 |
13 |
3.416 |
3374 |
3.88 |
|
4.090 |
918.3 |
50.0 |
0.8260 |
1.085 |
146.3 |
14 |
3.417 |
3300 |
3.95 |
|
4.100 |
817.0 |
47.4 |
0.8230 |
1.064 |
145.6 |
7 |
3.415 |
3395 |
3.81 |
|
4.110 |
819.9 |
47.8 |
0.8279 |
1.057 |
144.9 |
14 |
3.449 |
3354 |
3.81 |
|
4.120 |
422.0 |
23.8 |
0.8277 |
1.048 |
144.2 |
12 |
3.441 |
3310 |
3.81 |
|
4.130 |
1069.1 |
61.6 |
0.8291 |
1.030 |
143.5 |
15 |
3.457 |
3381 |
3.99 |
|
4.140 |
822.2 |
51.1 |
0.8302 |
1.012 |
142.8 |
11 |
3.440 |
3401 |
3.78 |
|
4.150 |
995.0 |
55.9 |
0.8298 |
1.000 |
141.9 |
10 |
3.460 |
3338 |
4.26 |
|
4.160 |
985.4 |
56.8 |
0.8231 |
1.002 |
141.5 |
6 |
3.466 |
3304 |
4.19 |
|
4.170 |
978.6 |
57.2 |
0.8336 |
1.007 |
144.8 |
15 |
3.484 |
3419 |
4.08 |
|
4.180 |
999.6 |
56.1 |
0.8329 |
1.027 |
140.1 |
9 |
3.490 |
3331 |
4.19 |
|
4.190 |
1106.2 |
64.2 |
0.8262 |
1.053 |
139.5 |
8 |
3.476 |
3403 |
4.01 |
|
4.200 |
802.9 |
48.0 |
0.8557 |
1.065 |
138.8 |
18 |
3.447 |
3336 |
3.73 |
|
4.210 |
528.6 |
38.5 |
0.8506 |
1.081 |
138.2 |
8 |
3.482 |
3338 |
3.05 |
|
4.220 |
944.0 |
59.6 |
0.8479 |
1.085 |
137.5 |
15 |
3.485 |
3333 |
3.53 |
|
4.230 |
856.0 |
61.3 |
0.8483 |
1.093 |
136.6 |
9 |
3.487 |
3358 |
3.10 |
|
4.240 |
866.6 |
61.9 |
0.8453 |
1.100 |
136.2 |
10 |
3.497 |
3317 |
3.12 |
|
4.245 |
861.6 |
68.1 |
0.8467 |
1.102 |
135.9 |
9 |
3.498 |
3292 |
2.82 |
|
4.250 |
628.7 |
52.5 |
0.8443 |
1.104 |
135.6 |
9 |
3.512 |
3299 |
2.67 |
|
4.255 |
950.9 |
74.9 |
0.8403 |
1.105 |
135.3 |
14 |
3.496 |
3273 |
2.85 |
|
4.260 |
918.5 |
71.1 |
0.8376 |
1.110 |
134.9 |
6 |
3.505 |
3275 |
2.91 |
Some Notes:
1. S_ee is the production cross section of
Bhabha events, polar angle range is |cos|<0.85;
2. S_tt is the production cross section of tau-pair events;
3. N_ee is number of Bhabha events surviving after hadron selection by MC, from
20000 produced events;
4. N_tt is number of tau-pair events surviving after hadron selection by MC, from
10000 produced events;
|
Ecm |
N_had |
Lum |
Eff |
f_rad |
S_ee |
E_ee(%) |
S_tt |
E_tt |
R |
|
4.265 |
827.5 |
62.1 |
0.8454 |
1.106 |
134.5 |
13 |
3.493 |
3281 |
2.99 |
|
4.270 |
1080.7 |
76.7 |
0.8420 |
1.108 |
134.4 |
11 |
3.493 |
3293 |
3.17 |
|
4.280 |
849.5 |
64.5 |
0.8418 |
1.105 |
133.6 |
12 |
3.503 |
3312 |
2.99 |
|
4.300 |
990.7 |
73.4 |
0.8508 |
1.099 |
132.3 |
11 |
3.494 |
3303 |
3.08 |
|
4.320 |
889.3 |
70.7 |
0.8546 |
1.094 |
131.4 |
12 |
3.507 |
3391 |
2.89 |
|
4.340 |
591.0 |
43.8 |
0.8533 |
1.086 |
129.9 |
11 |
3.501 |
3305 |
3.16 |
|
4.350 |
851.9 |
59.9 |
0.8525 |
1.082 |
129.3 |
11 |
3.496 |
3312 |
3.36 |
|
4.360 |
866.4 |
60.9 |
0.8532 |
1.078 |
128.7 |
13 |
3.483 |
3296 |
3.39 |
|
4.380 |
896.2 |
63.4 |
0.8621 |
1.052 |
127.6 |
13 |
3.492 |
3267 |
3.45 |
|
4.390 |
810.4 |
58.6 |
0.8703 |
1.024 |
127.0 |
13 |
3.493 |
3255 |
3.45 |
|
4.400 |
869.9 |
56.2 |
0.8688 |
0.996 |
126.4 |
10 |
3.494 |
3243 |
3.99 |
|
4.410 |
916.4 |
62.2 |
0.8778 |
0.970 |
125.9 |
10 |
3.485 |
3234 |
3.88 |
|
4.420 |
937.1 |
65.0 |
0.8768 |
0.971 |
125.3 |
10 |
3.478 |
3290 |
3.81 |
|
4.430 |
824.6 |
51.9 |
0.8775 |
1.009 |
124.7 |
12 |
3.480 |
3277 |
4.06 |
|
4.440 |
853.6 |
56.8 |
0.8704 |
1.050 |
124.2 |
14 |
3.481 |
3280 |
3.73 |
|
4.450 |
807.2 |
55.0 |
0.8688 |
1.080 |
123.1 |
14 |
3.475 |
3254 |
3.57 |
|
4.460 |
801.0 |
55.0 |
0.8573 |
1.099 |
123.1 |
12 |
3.469 |
3267 |
3.54 |
|
4.480 |
705.1 |
50.6 |
0.8512 |
1.109 |
122.0 |
10 |
3.467 |
3276 |
3.41 |
|
4.500 |
832.7 |
60.6 |
0.8512 |
1.110 |
120.9 |
10 |
3.459 |
3283 |
3.39 |
|
4.520 |
826.5 |
64.9 |
0.8535 |
1.110 |
119.8 |
7 |
3.457 |
3225 |
3.16 |
|
4.540 |
796.3 |
62.8 |
0.8580 |
1.106 |
118.8 |
7 |
3.440 |
3284 |
3.17 |
|
4.560 |
1031.2 |
72.1 |
0.8494 |
1.106 |
117.7 |
8 |
3.434 |
3298 |
3.65 |
Some Notes:
1. Eff_ee is the
selection efficiency of Bhabha events surviving via hadron
selection criteria .
2. Eff_tt is the selection efficiency of
tau pair events surviving via hadron
selection criteria.
Plan: 2- 3GeV能区R值精确测量和QCD实验研究 (By Hu Hai-Ming, .ppt)