Measurement of the W+W- Cross Section in root s=7 TeV pp Collisions with ATLAS
PHYSICAL REVIEW LETTERS, cilt.107, sa.4, 2011 (SCI-Expanded)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 107 Sayı: 4
- Basım Tarihi: 2011
- Doi Numarası: 10.1103/physrevlett.107.041802
- Dergi Adı: PHYSICAL REVIEW LETTERS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Açık Arşiv Koleksiyonu: AVESİS Açık Erişim Koleksiyonu
- Orta Doğu Teknik Üniversitesi Adresli: Evet
Özet
This Letter presents a measurement of the W+W- production cross section in root s = 7 TeV pp collisions by the ATLAS experiment, using 34 pb(-1) of integrated luminosity produced by the Large Hadron Collider at CERN. Selecting events with two isolated leptons, each either an electron or a muon, 8 candidate events are observed with an expected background of 1.7 +/- 0.6 events. The measured cross section is 41(-16)(+20)(stat) +/- 5(syst) +/- 1(lumi) pb, which is consistent with the standard model prediction of 44 +/- 3 pb calculated at next-to-leading order in QCD.