Measurement of top quark polarization in tt¯ lepton+jets final states

(D0 Collaboration)

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9 Citas (Scopus)

Resumen

We present a measurement of top quark polarization in tt- pair production in pp- collisions at s=1.96 TeV using data corresponding to 9.7 fb-1 of integrated luminosity recorded with the D0 detector at the Fermilab Tevatron Collider. We consider final states containing a lepton and at least three jets. The polarization is measured through the distribution of lepton angles along three axes: the beam axis, the helicity axis, and the transverse axis normal to the tt- production plane. This is the first measurement of top quark polarization at the Tevatron using lepton+jet final states and the first measurement of the transverse polarization in tt- production. The observed distributions are consistent with standard model predictions of nearly no polarization.

Idioma originalInglés
Número de artículo011101
PublicaciónPhysical Review D
Volumen95
N.º1
DOI
EstadoPublicada - 9 ene. 2017

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