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18 April 2024

» arxiv » 1201.3977

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WW Scattering Parameters via Pseudoscalar Phase Shifts
Thomas Appelquist ; Ron Babich ; Richard C. Brower ; Michael I. Buchoff ; Michael Cheng ; Michael A. Clark ; Saul D. Cohen ; George T. Fleming ; Joe Kiskis ; Meifeng Lin ; Ethan T. Neil ; James C. Osborn ; Claudio Rebbi ; David Schaich ; Sergey Syritsyn ; Gennady Voronov ; Pavlos Vranas ; Joseph Wasem ;
Date:	19 Jan 2012
Abstract:	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.
Source:	arXiv, 1201.3977
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