Top quark induced backgrounds to higgs production in the W W (*) → l l ν ν decay channel at next-to-leading-order in QCD

Summary, in English

We present the complete next-to-leading-order (NLO) contributions to the pp→e+νeμ-ν̄μbb̄+X process in the four-flavor scheme, i.e., with massive b quarks, and its contribution to the H→WW(*) →llνν measurement in the 1-jet bin at the LHC. This background process includes top pair, single top, and non-top-quark resonant contributions. The uncertainty at NLO from the renormalization and factorization scale dependence is about +30%-20%. We show that the NLO corrections are relatively small, and that separating this background in top pair, Wt- and b-quark-associated llνν production is a fair approximation.

• Author: R. Frederix
• Publishing year: 2014-02-25
• Language: English
• Publication/Series: Physical Review Letters
• Volume: 112
• Issue: 8
• Links: http://dx.doi.org/10.1103/PhysRevLett.112.082002
• Document type: Journal article
• Publisher: American Physical Society
• Topic: Subatomic Physics
• Status: Published
• ISBN/ISSN/Other: ISSN: 0031-9007