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Communication Dans Un Congrès Année : 2015

S-parameter and vector decay constant in QCD with eight fundamental fermions

Résumé

SU(3) gauge theory with eight massless fundamental fermions seems to be near the conformal boundary, and is a candidate theory of walking technicolor. Along the series of study by LatKMI collaboration using HISQ fermions, S-parameter and vector decay constant, which provide important constraints in the model of electroweak symmetry breaking, are calculated for this theory. Use of various volumes allows a systematic investigation of finite volume effects. A strong sensitivity of the S-parameter to the volume is found.

Dates et versions

hal-01362469 , version 1 (08-09-2016)

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Yasumichi Aoki, Tatsumi Aoyama, Ed Bennett, Masafumi Kurachi, Toshihide Maskawa, et al.. S-parameter and vector decay constant in QCD with eight fundamental fermions. The 33rd International Symposium on Lattice Field Theory, Jul 2015, Kobe, Japan. ⟨hal-01362469⟩
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