Measurement of the tt̅ production cross section in pp̅ collisions at √s=1.96 TeV using soft electron b-tagging
| Contribuinte(s) |
University of Helsinki, Department of Physics University of Helsinki, Department of Physics University of Helsinki, Department of Physics University of Helsinki, Department of Physics University of Helsinki, Department of Physics |
|---|---|
| Data(s) |
11/05/2010
|
| Resumo |
We present a measurement of the top quark pair production cross section in ppbar collisions at sqrt(s)=1.96 TeV using a data sample corresponding to 1.7/fb of integrated luminosity collected with the Collider Detector at Fermilab. We reconstruct ttbar events in the lepton+jets channel. The dominant background is the production of W bosons in association with multiple jets. To suppress this background, we identify electrons from the semileptonic decay of heavy-flavor jets. We measure a production cross section of 7.8 +/- 2.4 (stat) +/- 1.6 (syst) +/- 0.5 (lumi) pb. This is the first measurement of the top pair production cross section with soft electron tags in Run II of the Tevatron. |
| Formato |
18 |
| Identificador |
http://hdl.handle.net/10138/24189 1550-7998 |
| Idioma(s) |
eng |
| Publicador |
American Physical Society |
| Relação |
Physical Review D : Particles, Fields, Gravitation and Cosmology |
| Fonte |
Aaltonen , T , Mehtälä , P , Orava , R , Saarikko , H , Österberg , K & CDF Collaboration 2010 , ' Measurement of the tt̅ production cross section in pp̅ collisions at √s=1.96 TeV using soft electron b-tagging ' Physical Review D : Particles, Fields, Gravitation and Cosmology , vol 81 , no. 9 , pp. 092002 . , 10.1103/PhysRevD.81.092002 |
| Palavras-Chave | #114 Physical sciences |
| Tipo |
A1 Refereed journal article info:eu-repo/semantics/article |
