/ hep-ex FERMILAB-PUB-15-581-E

Measurement of spin correlation between top and antitop quarks produced in $p\bar{p}$ collisions at $\sqrt{s} = 1.96$ TeV

Published in: Phys.Lett.B

Abstract: We present a measurement of the correlation between the spins of t and tbar quarks produced in proton-antiproton collisions at the Tevatron Collider at a center-of-mass energy of 1.96 TeV. We apply a matrix element technique to dilepton and single-lepton+jets final states in data accumulated with the D0 detector that correspond to an integrated luminosity of 9.7 fb$^{-1}$. The measured value of the correlation coefficient in the off-diagonal basis, $O_{off} = 0.89 \pm 0.22$ (stat + syst), is in agreement with the standard model prediction, and represents evidence for a top-antitop quark spin correlation difference from zero at a level of 4.2 standard deviations.

Note: Submitted to PLB

Total numbers of views: 606
Numbers of unique views: 278
Запись создана 2016-01-11, последняя модификация 2016-02-01

Внешние ссылки:
Полный текст
FERMILABTODAY
Оценить этот документ:

1
2
3

(Еще не рецензированная)