WW Scattering Parameters via Pseudoscalar Phase Shifts

Details WW Scattering Parameters via Pseudoscalar Phase Shifts WW Scattering Parameters via Pseudoscalar Phase Shifts

2012-01-19

arxiv.org/abs/1201.3977v1

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 6 figures

Scientific paper

Using domain-wall lattice simulations, we study pseudoscalar-pseudoscalar scattering in the maximal isospin channel for an SU(3) gauge theory with two and six fermion flavors in the fundamental representation. This calculation of the S-wave scattering length is related to the next-to-leading order corrections to WW scattering through the low-energy coefficients of the chiral Lagrangian. While two and six flavor scattering lengths are similar for a fixed ratio of the pseudoscalar mass to its decay constant, six-flavor scattering shows a somewhat less repulsive next-to-leading order interaction than its two-flavor counterpart. Estimates are made for the WW scattering parameters and the plausibility of detection is discussed.

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