Determination of the width of the top quark

, D0 Collaboration (2011) Determination of the width of the top quark. Physical review letters, 106 (2). ISSN 1079-7114

[img]
Preview
PDF
e022001.pdf - Published Version

Download (238kB)

Abstract

We extract the total width of the top quark, Gamma_t, from the partial decay width Gamma(t -> W b) measured using the t-channel cross section for single top quark production and from the branching fraction B(t -> W b) measured in ttbar events using up to 2.3 fb^-1 of integrated luminosity collected by the D0 Collaboration at the Tevatron ppbar Collider. The result is Gamma_t = 1.99 +0.69 -0.55 GeV, which translates to a top-quark lifetime of tau_t = (3.3 +1.3 -0.9) x 10^-25 s. Assuming a high mass fourth generation b' quark and unitarity of the four-generation quark-mixing matrix, we set the first upper limit on |Vtb'|

Item Type:
Journal Article
Journal or Publication Title:
Physical review letters
Additional Information:
© 2011 The American Physical Society
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
52297
Deposited By:
Deposited On:
12 Jan 2012 01:54
Refereed?:
Yes
Published?:
Published
Last Modified:
05 Dec 2020 01:27