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Expectation value of lightlike polygon Wilson loop is computed in thethree-dimensional ABJM theory up to second-order in `t Hooft coupling in thelimit of infinitely many colors and the result is critically compared with thatin the four-dimensional N=4 super Yang-Mills theory. We first obtain analyticresult for hexagon Wilson loop by combining Mellin-Barnes transformation, highprecision numerical computation and the PSLQ algorithm. We then derive aversion of operator product expansion (OPE) that reduces lightlike n-gon to alinear combination of (n-2)-gons in the soft-collinear limit of the polygongeometry. The Wilson coefficient of the OPE is the universal antenna functiondefined by a collapsed lightlike tetragon Wilson loop. Using this, we firstconstruct a all order recursion relation among the lightlike Wilson loops andthen solve it for arbitrary polygon with the hexagon Wilson loop as the initialcondition. The functional form of the polygon Wilson loop takes the structureremarkably similar to the four-dimensional N=4 super Yang-Mills theory. We alsoobserve that Gram subdeterminant conditions for polygon moduli variablesrestricts that the Wilson loop contour should be restricted even-sided. As aconsistency check, we take thermodynamic limit of regular polygon and reproducethe known results for spacelike circular Wilson loop expectation value.

Antenna Operator Product Expansion of ABJ(M) Lightlike Polygon Wilson Loop