uu.seUppsala University Publications
Change search
ReferencesLink to record
Permanent link

Direct link
Search for single top quarks in the tau plus jets channel using 4.8 fb(-1) of p(p)over-bar collision data
Show others and affiliations
2010 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 690, no 1, 5-14 p.Article in journal (Refereed) Published
Abstract [en]

We present the first direct search for single top quark production using reconstructed tau leptons in the final state. The search is based on 4.8 fb(-1) of integrated luminosity collected in p (p) over bar collisions at root s= 1.96 TeV with the D0 detector at the Fermilab Tevatron Collider. We select events with a final state including an isolated tau lepton. missing transverse energy, two or three jets, one or two of them being identified as b quark jet. We use a multivariate technique to discriminate signal from background. The number of events observed in data in this final state is consistent with the signal plus background expectation. We set in the tau + jets channel an upper limit on the single top quark cross section of 7.3 pb at the 95% C.L. This measurement allows a gain of 4% in expected sensitivity for the observation of single top production when combining it with electron + jets and muon + jets channels already published by the DO Collaboration with 2.3 fb(-1) of data. We measure a combined cross section of 3.84(-0.83)(+0.89) pb, which is the most precise measurement to date.

Place, publisher, year, edition, pages
2010. Vol. 690, no 1, 5-14 p.
Keyword [en]
Single top, Top quarks, Tau leptons
National Category
Astronomy, Astrophysics and Cosmology
URN: urn:nbn:se:uu:diva-138730DOI: 10.1016/j.physletb.2010.05.003ISI: 000278933900002OAI: oai:DiVA.org:uu-138730DiVA: diva2:379704
Available from: 2010-12-19 Created: 2010-12-19 Last updated: 2010-12-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text
By organisation
High Energy Physics
In the same journal
Physics Letters B
Astronomy, Astrophysics and Cosmology

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 186 hits
ReferencesLink to record
Permanent link

Direct link