Table 2.

Expected and observed event yields in the dielectron channel. The predicted yields are shown for SM background as well as for SM+CI for several CI signal scenarios. The quoted errors consist of both the statistical and systematic uncertainties added in quadrature

Process	$m_{ee}$ [GeV]
	400–550	550–800	800–1200	1200–1800	1800–3000	3000–4500
Drell–Yan	910 $\pm$ 70	302 $\pm$ 25	63 $\pm$ 6	8.2 $\pm$ 1.2	0.64 $\pm$ 0.17	0.006 $\pm$ 0.004
Top quarks	153 $\pm$ 13	35.2 $\pm$ 2.7	3.06 $\pm$ 0.18	0.140 $\pm$ 0.008	$<$0.004	$<$0.001
Multi-Jet & W+Jets	88 $\pm$ 18	27 $\pm$ 5	5.8 $\pm$ 1.2	0.87 $\pm$ 0.17	0.11 $\pm$ 0.02	0.0058 $\pm$ 0.0012
Diboson	62.2 $\pm$ 3.5	22.3 $\pm$ 1.3	5.4 $\pm$ 0.4	0.83 $\pm$ 0.05	0.075 $\pm$ 0.006	$<$0.001
Photon-Induced	40 $\pm$ 40	17 $\pm$ 17	4 $\pm$ 4	0.7 $\pm$ 0.7	0.08 $\pm$ 0.08	0.0016 $\pm$ 0.0016
Total SM	1260 $\pm$ 100	404 $\pm$ 35	82 $\pm$ 9	10.8 $\pm$ 1.6	0.91 $\pm$ 0.21	0.014 $\pm$ 0.005
Data	1262	388	84	7	0	0
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LL}}^{-}=14\mathrm{TeV}$)	1310 $\pm$ 110	440 $\pm$ 40	108 $\pm$ 10	20.9 $\pm$ 1.9	4.2 $\pm$ 0.4	0.141 $\pm$ 0.028
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LL}}^{-}=20\mathrm{TeV}$)	1290 $\pm$ 110	430 $\pm$ 40	90 $\pm$ 10	14.4 $\pm$ 1.7	2.01 $\pm$ 0.25	0.045 $\pm$ 0.012
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LR}}^{-}=14\mathrm{TeV}$)	1340 $\pm$ 110	460 $\pm$ 40	118 $\pm$ 10	26.3 $\pm$ 2.1	6.0 $\pm$ 0.5	0.28 $\pm$ 0.05
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LR}}^{-}=20\mathrm{TeV}$)	1290 $\pm$ 110	420 $\pm$ 40	98 $\pm$ 10	15.7 $\pm$ 1.7	2.58 $\pm$ 0.28	0.078 $\pm$ 0.018
SM+CI (${\mathrm{\Lambda }}_{\mathrm{RR}}^{-}=14\mathrm{TeV}$)	1310 $\pm$ 110	440 $\pm$ 40	108 $\pm$ 10	20.8 $\pm$ 1.9	3.78 $\pm$ 0.34	0.23 $\pm$ 0.04
SM+CI (${\mathrm{\Lambda }}_{\mathrm{RR}}^{-}=20\mathrm{TeV}$)	1290 $\pm$ 110	430 $\pm$ 40	91 $\pm$ 10	14.3 $\pm$ 1.7	1.86 $\pm$ 0.24	0.072 $\pm$ 0.015
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LL}}^{+}=14\mathrm{TeV}$)	1230 $\pm$ 110	380 $\pm$ 40	79 $\pm$ 9	12.2 $\pm$ 1.7	2.08 $\pm$ 0.25	0.075 $\pm$ 0.015
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LL}}^{+}=20\mathrm{TeV}$)	1230 $\pm$ 110	390 $\pm$ 40	77 $\pm$ 9	10.0 $\pm$ 1.6	0.95 $\pm$ 0.22	0.029 $\pm$ 0.008
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LR}}^{+}=14\mathrm{TeV}$)	1200 $\pm$ 110	400 $\pm$ 40	88 $\pm$ 10	18.9 $\pm$ 1.8	4.2 $\pm$ 0.4	0.191 $\pm$ 0.034
SM+CI (${\mathrm{\Lambda }}_{\mathrm{LR}}^{+}=20\mathrm{TeV}$)	1210 $\pm$ 110	390 $\pm$ 40	81 $\pm$ 9	11.5 $\pm$ 1.6	1.65 $\pm$ 0.24	0.058 $\pm$ 0.013
SM+CI (${\mathrm{\Lambda }}_{\mathrm{RR}}^{+}=14\mathrm{TeV}$)	1230 $\pm$ 110	380 $\pm$ 40	79 $\pm$ 9	12.1 $\pm$ 1.7	2.26 $\pm$ 0.26	0.098 $\pm$ 0.018
SM+CI (${\mathrm{\Lambda }}_{\mathrm{RR}}^{+}=20\mathrm{TeV}$)	1230 $\pm$ 110	390 $\pm$ 40	77 $\pm$ 9	10.2 $\pm$ 1.6	1.06 $\pm$ 0.22	0.036 $\pm$ 0.009