Measurement of the ttbar production cross section with an in situ calibration of b-jet identification efficiency
| Contribuinte(s) |
University of Helsinki, Department of Physics University of Helsinki, Helsinki Institute of Physics University of Helsinki, Helsinki Institute of Physics University of Helsinki, Department of Physics University of Helsinki, Department of Physics |
|---|---|
| Data(s) |
13/04/2011
|
| Resumo |
A measurement of the top-quark pair-production cross section in ppbar collisions at sqrt{s}=1.96 TeV using data corresponding to an integrated luminosity of 1.12/fb collected with the Collider Detector at Fermilab is presented. Decays of top-quark pairs into the final states e nu + jets and mu nu + jets are selected, and the cross section and the b-jet identification efficiency are determined using a new measurement technique which requires that the measured cross sections with exactly one and multiple identified b-quarks from the top-quark decays agree. Assuming a top-quark mass of 175 GeV/c^2, a cross section of 8.5+/-0.6(stat.)+/-0.7(syst.) pb is measured. |
| Formato |
8 |
| Identificador |
http://hdl.handle.net/10138/26571 1550-7998 |
| Idioma(s) |
eng |
| Publicador |
American Physical Society |
| Relação |
Physical Review D : Particles, Fields, Gravitation and Cosmology |
| Fonte |
Aaltonen , T , Brücken , E , Devoto , F , Mehtälä , P , Orava , R & CDF Collaboration 2011 , ' Measurement of the ttbar production cross section with an in situ calibration of b-jet identification efficiency ' Physical Review D : Particles, Fields, Gravitation and Cosmology , vol 83 , no. 7 , pp. 071102(R) . , 10.1103/PhysRevD.83.071102 |
| Palavras-Chave | #114 Physical sciences |
| Tipo |
A1 Refereed journal article info:eu-repo/semantics/article |
