Measurement of the t(t)over-bar production cross section in the dilepton channel in pp collisions at root s=7 TeV
JOURNAL OF HIGH ENERGY PHYSICS, cilt.2012, sa.11, 2012 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 2012 Sayı: 11
- Basım Tarihi: 2012
- Doi Numarası: 10.1007/jhep11(2012)067
- Dergi Adı: JOURNAL OF HIGH ENERGY PHYSICS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
- Anahtar Kelimeler: Hadron-Hadron Scattering, PROTON-PROTON COLLISIONS, QUARK PAIR PRODUCTION, TOP-QUARK, ATLAS, LIMITS, BOSON
- Marmara Üniversitesi Adresli: Hayır
Özet
The t (t) over bar production cross section (sigma(t (t) over bar)) is measured in proton-proton collisions at root s = 7 TeV in data collected by the CMS experiment, corresponding to an integrated luminosity of 2.3 fb(-1). The measurement is performed in events with two leptons (electrons or muons) in the final state, at least two jets identified as jets originating from b quarks, and the presence of an imbalance in transverse momentum. The measured value of sigma(t (t) over bar) for a top-quark mass of 172.5 GeV is 161.9 +/- 2.5 (stat.)(-5.0)(+5.1) (syst.) +/- 3.6 (lumi.) pb, consistent with the prediction of the standard model.