期刊
PHYSICAL REVIEW D
卷 84, 期 1, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.84.011103
关键词
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资金
- DOE
- NSF (USA)
- CEA
- CNRS/IN2P3 (France)
- FASI
- Rosatom and RFBR (Russia)
- CNPq
- FAPERJ
- FAPESP
- FUNDUNESP (Brazil)
- DAE and DST (India)
- Colciencias (Colombia)
- CONACyT (Mexico)
- KRF and KOSEF (Korea)
- CONICET and UBACyT (Argentina)
- FOM (The Netherlands)
- STFC
- Royal Society (United Kingdom)
- MSMT and GACR (Czech Republic)
- NSERC (Canada)
- BMBF and DFG (Germany)
- SFI (Ireland)
- Swedish Research Council (Sweden)
- CAS and CNSF (China)
- STFC [ST/F00754X/1, PP/E000487/1, ST/J501074/1, ST/H00095X/1, ST/F007418/1, ST/H00095X/2, ST/I505756/1] Funding Source: UKRI
- Science and Technology Facilities Council [PP/D004284/1, ST/F00754X/1, ST/I505756/1, ST/F007418/1, ST/H00095X/1, ST/J501074/1, PP/E000487/1, ST/H00095X/2] Funding Source: researchfish
- Division Of Physics
- Direct For Mathematical & Physical Scien [1066578] Funding Source: National Science Foundation
- ICREA Funding Source: Custom
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.
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