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Measurement of the ZZ production cross section in ppbar collisions at √s=1.96 TeV

SYSNO ASEP	0367764
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Článek ve WOS
Title	Measurement of the ZZ production cross section in ppbar collisions at √s=1.96 TeV
Author(s)	Abazov, V. M. (RU) Abbott, B. (US) Acharya, B.S. (IN) Kupčo, Alexander (FZU-D)_{RID, ORCID} Lokajíček, Miloš (FZU-D)_{RID, ORCID}
Number of authors	422
Source Title	Physical Review D: Particles, Fields, Gravitation and Cosmology. - : American Physical Society - ISSN 1550-7998 Roč. 84, č. 1 (2011), "011103-1"-"011103-8"
Number of pages	8 s.
Language	eng - English
Country	US - United States
Keywords	D0 ; Tevatron ; lepton ; final state ; quantum chromodynamics ; background
Subject RIV	BF - Elementary Particles and High Energy Physics
R&D Projects	LA08047 GA MŠMT - Ministry of Education, Youth and Sports (MEYS)
CEZ	AV0Z10100502 - FZU-D (2005-2011)
UT WOS	000292514400002
DOI	10.1103/PhysRevD.84.011103
Annotation	We present a new measurement of the production cross section sigma(p (p) over bar -> ZZ) at a center-of-mass energy root s = 1.96 TeV, obtained from the analysis of the four charged lepton final state l(+)l(-)l´(+)l´-(l,l´ = e or mu). We observe ten candidate events with an expected background of 0: 37 +/- 0: 13 events. The measured cross section sigma(p (p) over bar -> ZZ) = 1.26(-0.37)(+0.47)(stat) +/- 0.14(syst) pb is in agreement with NLO QCD predictions. This result is combined with a previous result from the ZZ -> l(+)l(-)v (v) over bar channel resulting in a combined cross section of sigma(p (p) over bar -> ZZ) = 1.40(-0.37)(+0.43)(stat) +/- 0.14(syst) pb.
Workplace	Institute of Physics
Contact	Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579
Year of Publishing	2013

Number of the records: 1