Measurement of the <script type="math/tex">t\overline{t}</script> production cross section in <script type="math/tex">p\overline{p}</script> collisions at <script type="math/tex">\sqrt{s}</script>=1.96 TeV

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

doi:10.1103/PHYSREVLETT.97.082004

Publication

Title

Measurement of the $t\overline{t}$ production cross section in $p\overline{p}$ collisions at $\sqrt{s}$ =1.96 TeV

Author

Abulencia, A.

Van Remortel, N.

et al.

Institution/Organisation

CDF Collaboration

Abstract

We present a measurement of the top quark pair production cross section in pp̅ collisions at √s=1.96 TeV using 318 pb-1 of data collected with the Collider Detector at Fermilab. We select tt̅ decays into the final states eν+jets and μν+jets, in which at least one b quark from the t-quark decays is identified using a secondary vertex-finding algorithm. Assuming a top quark mass of 178 GeV/c2, we measure a cross section of 8.7±0.9(stat)-0.9+1.1(syst) pb. We also report the first observation of tt̅ with significance greater than 5σ in the subsample in which both b quarks are identified, corresponding to a cross section of 10.1-1.4+1.6(stat)-1.3+2.0(syst) pb.

Language

English

Source (journal)

Physical review letters. - New York, N.Y., 1958, currens

Publication

New York, N.Y. : American Physical Society , 2006

ISSN

0031-9007 [print]

1079-7114 [online]

Volume/pages

97 :8 (2006) , p. 082004,1-082004,7

ISI