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Título:	Measurement of σ(pp̅ →Z)·B(Z→ττ) in pp̅ collisions at √s=1.96  TeV
Autor:	Abulencia, A.; Rodrigo, Teresa ; Cabrera, Susana ; Chuang, S. H. ; Fernández Menéndez, Javier ; Ruiz Jimeno, Alberto ; Gómez, G. ; Cuenca Almenar, Cristóbal ; Cuevas, Javier ; Palencia, Enrique ; Piedra, Jonatan ; Scodellaro, Luca ; Vila, Iván ; Vilar, Rocío
Palabras clave:	Yan K-factor Drell-yan process Parton distributions Cross-section Collider Boson
Fecha de publicación:	18-may-2007
Editor:	American Physical Society
Citación:	Physical Review D 75(9): 092004 (2007)
Resumen:	We present a measurement of the inclusive production cross section for Z bosons decaying to tau leptons in p (p) over bar collisions at root s=1.96 TeV. We use a channel with one hadronically-decaying and one electronically-decaying tau. This measurement is based on 350 pb(-1) of CDF Run II data. Using a sample of 504 opposite sign e tau events with a total expected background of 190 events, we obtain sigma(p (p) over bar -> 4Z)center dot B(Z ->tau tau)=264 +/- 23(stat)+/- 14(syst)+/- 15(lumi) pb, in agreement with the next-to-next-to-leading order QCD prediction. This is the first CDF cross section measurement using hadronically-decaying taus in Run II.
Descripción:	26 pages, 15 figures.-- PACS nrs.: 13.38.Dg; 13.85.Qk.-- CDF Collaboration: et al.
Versión del editor:	http://dx.doi.org/10.1103/PhysRevD.75.092004
URI:	http://hdl.handle.net/10261/9892
DOI:	10.1103/PhysRevD.75.092004
ISSN:	1550-7998
Aparece en las colecciones:	(IFIC) Artículos (IFCA) Artículos