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Higher Angular Momentum Mixing in a Non-spherical Color Superconductor with Time Reversal Invariance Violation
Bo Feng, Defu Hou, Hai-cang Ren
The angular momentum mixing in a non-spherical CSC with nonzero azimuthal quantum number and therefore violating time reversal invariance has been examined. The mixing is bound to…
Unitarity Method with Spurious Pole
Bo Feng, Gang Yang
In unitarity cut method, compact input of on-shell tree level amplitudes is crucial to simplify calculations. Although BCFW on-shell recursion relation gives very compact tree leve…
Polynomial Structures in One-Loop Amplitudes
Ruth Britto, Bo Feng, Gang Yang
A general one-loop scattering amplitude may be expanded in terms of master integrals. The coefficients of the master integrals can be obtained from tree-level input in a two-step p…
D-dimensional unitarity cut method
Charalampos Anastasiou, Ruth Britto, Bo Feng +2
We develop a unitarity method to compute one-loop amplitudes with massless propagators in d=4-2*epsilon dimensions. We compute double cuts of the loop amplitudes via a decompositio…