$Measurement of W-boson helicity fractions in top-quark decays using cos theta$

Measurement of W-boson helicity fractions in top-quark decays using cos theta

Fully reconstructed t over(t, ̄) → W+ b W- over(b, ̄) → ℓ ν q over(q, ̄)′ b over(b, ̄) events are used to determine the fractions of right-handed (f+) and longitudinally polarized (f0) W bosons produced in top-quark decays. The helicity fractions are sensitive to the couplings and the Dirac structur...

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Príomhchruthaitheoirí:	Aaltonen, T, Adelman, J, Akimoto, T, Alvarez Gonzalez, B, Amerio, S, Amidei, D, Anastassov, A, Annovi, A, Antos, J, Apollinari, G, Apresyan, A, Arisawa, T, Artikov, A, Ashmanskas, W, Attal, A, Aurisano, A, Azfar, F, Badgett, W, Barbaro-Galtieri, A, Barnes, V, Barnett, B, Barria, P, Bartsch, V, Bauer, G, Beauchemin, P
Formáid:	Journal article
Teanga:	English
Foilsithe / Cruthaithe:	2009

Measurement of W-boson helicity fractions in top-quark decays using cos theta

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