Measurement of sigma(p(p)over-bar -> Z)center dot Br(Z ->tau tau) at root s=1.96 TeV
| Contribuinte(s) |
Universidade Estadual Paulista (UNESP) |
|---|---|
| Data(s) |
20/05/2014
20/05/2014
01/04/2005
|
| Resumo |
We present a measurement of the cross section for Z production times the branching fraction to tau leptons, sigma.Br(Z ->tau(+)tau(-)), in p (p) over bar collisions at root s=1.96 TeV in the channel in which one tau decays into mu nu(mu)nu(tau), and the other into hadrons+nu(tau) or e nu(e)nu(tau). The data sample corresponds to an integrated luminosity of 226 pb(-1) collected with the D0 detector at the Fermilab Tevatron collider. The final sample contains 2008 candidate events with an estimated background of 55%. From this we obtain sigma.Br(Z ->tau(+)tau(-)) = 237 +/- 15(stat)+/- 18(sys)+/- 15(lum)pb, in agreement with the standard model prediction. |
| Formato |
7 |
| Identificador |
http://dx.doi.org/10.1103/PhysRevD.71.072004 Physical Review D. College Pk: American Physical Soc, v. 71, n. 7, 7 p., 2005. 0556-2821 http://hdl.handle.net/11449/23956 10.1103/PhysRevD.71.072004 WOS:000228765400010 WOS000228765400010.pdf |
| Idioma(s) |
eng |
| Publicador |
American Physical Soc |
| Relação |
Physical Review D |
| Direitos |
closedAccess |
| Tipo |
info:eu-repo/semantics/article |