Diffractive W and Z production at the Fermilab Tevatron
| 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) |
10/12/2010
|
| Resumo |
We report on a measurement of the fraction of events with a W or Z boson produced diffractively in antiproton-proton collisions at a center of mass energy of 1.96 TeV, using data from 0.6 inverse femtobarns of integrated luminosity collected with the CDF-II detector equipped with a Roman-pot spectrometer that detects the antiproton (pbar) from pbar+p --> pbar+[X+W/Z]. We find that (0.97 +/- 0.11)% of Ws and (0.85 +/- 0.22)% of Zs are produced diffractively in a region of (anti)proton fractional momentum loss (\xi) of 0.03-1t p+[X+W/Z]+pbar, and on exclusive Z production, pbar+p-->pbar+Z+p. No signal is seen above background for these processes, and comparisons are made with expectations. |
| Formato |
10 |
| Identificador |
http://hdl.handle.net/10138/24201 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 2010 , ' Diffractive W and Z production at the Fermilab Tevatron ' Physical Review D : Particles, Fields, Gravitation and Cosmology , vol 82 , no. 11 , pp. 112004 . , 10.1103/PhysRevD.82.112004 |
| Palavras-Chave | #114 Physical sciences |
| Tipo |
A1 Refereed journal article info:eu-repo/semantics/article |
