Loopholes in W R Searches at the LHC
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Fig. 3 Observed (continuous lines) and expected (dashed lines) 95% CL exclusion contours in
the M W R − M ν R plane in the ee (left columns) and μμ (right columns) channels for Majorana ν R
neutrinos. The dashed blue line in the each plane indicates the region where M W R = M ν R . We also
show observed and expected limits by ATLAS [13] @ L = 36.1 fb −1 , and CMS [14] @ L = 35.9
fb −1 , obtained assuming g L = g R , tan β = 0.01, and V L
CKM = V R
CKM . The cross section values
are indicated by the colors in the legend of the planes. In the top planes, the continuous (dashed)
black (red) line shows the estimated observed (expected) limit for the scenario where g L = g R ,
tan β = 0.01, and V L
CKM = V R
CKM . In the middle planes, g L = g R = 0.37, tan β = 0.5, and
V L
CKM = V R
CKM , whereas the same limits in the bottom planes are analyzed for the scenario where
g L = g R = 0.37, tan β = 0.5, and also V L
CKM = V R
CKM