Measurement of the top quark mass in <script type="math/tex">p\overline{p}</script> collisions at <script type="math/tex">\sqrt{s}</script>=1.96 TeV using the decay length technique

Abulencia, A.; Van Remortel, N.; et al.

doi:10.1103/PHYSREVD.75.071102

Title

Measurement of the top quark mass in $p\overline{p}$ collisions at $\sqrt{s}$ =1.96 TeV using the decay length technique

Author

Abulencia, A.

Van Remortel, N.

et al.

Institution/Organisation

CDF Collaboration

Abstract

We report the first measurement of the top quark mass using the decay length technique in pp̅ collisions at a center-of-mass energy of 1.96 TeV. This technique uses the measured flight distance of the b hadron to infer the mass of the top quark in lepton plus jets events with missing transverse energy. It relies solely on tracking and avoids the jet energy scale uncertainty that is common to all other methods used so far. We apply our novel method to a 695 pb-1 data sample recorded by the CDF II detector at Fermilab and extract a measurement of mt=180.7-13.4+15.5(stat.)±8.6(syst.) GeV/c2. While the uncertainty of this result is larger than that of other measurements, the dominant uncertainties in the decay length technique are uncorrelated with those in other methods. This result can help reduce the overall uncertainty when combined with other existing measurements of the top quark mass.

Language

English

Source (journal)

Physical review : D : particles, fields, gravitation, and cosmology / American Physical Society. - Ridge, N.Y., 2004 - 2015

Physical review : D : particles and fields. - Lancaster, Pa, 1970 - 2003

Publication

Ridge, N.Y. : American Physical Society , 2007

ISSN

1550-7998 [print]

1550-2368 [online]

DOI

10.1103/PHYSREVD.75.071102