We present an observation for ZZ -> l(+) l(-) l'(+) l'(-) (l, l' =e or mu) production in p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV. Using 1.7 fb(-1) of data collected by the D0 experiment at the Fermilab Tevatron Collider, we observe three candidate events with an expected background of 0.14(-0.02)(+0.03) events. The significance of this observation is 5.3 standard deviations. The combination of D0 results in this channel, as well as in ZZ -> l(+) l(-) v (v) over bar yields a significance of 5.7 standard deviations and a combined cross section of sigma(ZZ) = 1.60 +/- 0.63(stat)(-0.17)(+0.16)(syst) pb.

Observation of ZZ Production in p(p)over-bar Collisions at root s=1.96 TeV

CERMINARA, GIANLUCA;
2008-01-01

Abstract

We present an observation for ZZ -> l(+) l(-) l'(+) l'(-) (l, l' =e or mu) production in p (p) over bar collisions at a center-of-mass energy of root s = 1.96 TeV. Using 1.7 fb(-1) of data collected by the D0 experiment at the Fermilab Tevatron Collider, we observe three candidate events with an expected background of 0.14(-0.02)(+0.03) events. The significance of this observation is 5.3 standard deviations. The combination of D0 results in this channel, as well as in ZZ -> l(+) l(-) v (v) over bar yields a significance of 5.7 standard deviations and a combined cross section of sigma(ZZ) = 1.60 +/- 0.63(stat)(-0.17)(+0.16)(syst) pb.
2008
101
171803
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V. M. Abazov;B. Abbott;M. Abolins;B. S. Acharya;M. Adams;T. Adams;E. Aguilo;M. Ahsan;G. D. Alexeev;G. Alkhazov;A. Alton;G. Alverson;G. A. Alves;M. Anastasoaie;L. S. Ancu;T. Andeen;B. Andrieu;M. S. Anzelc;M. Aoki;Y. Arnoud;M. Arov;M. Arthaud;A. Askew;B. Asman;A. C. S. Assis Jesus;O. Atramentov;C. Avila;F. Badaud;L. Bagby;B. Baldin;D. V. Bandurin;P. Banerjee;S. Banerjee;E. Barberis;A. F. Barfuss;P. Bargassa;P. Baringer;J. Barreto;J. F. Bartlett;U. Bassler;D. Bauer;S. Beale;A. Bean;M. Begalli;M. Begel;C. Belanger-Champagne;L. Bellantoni;A. Bellavance;J. A. Benitez;S. B. Beri;G. Bernardi;R. Bernhard;I. Bertram;M. Besancon;R. Beuselinck;V. A. Bezzubov;P. C. Bhat;V. Bhatnagar;C. Biscarat;G. Blazey;F. Blekman;S. Blessing;K. Bloom;A. Boehnlein;D. Boline;T. A. Bolton;E. E. Boos;G. Borissov;T. Bose;A. Brandt;R. Brock;G. Brooijmans;A. Bross;D. Brown;X. B. Bu;N. J. Buchanan;D. Buchholz;M. Buehler;V. Buescher;V. Bunichev;S. Burdin;T. H. Burnett;C. P. Buszello;J. M. Butler;P. Calfayan;S. Calvet;J. 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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/65656
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