Next-to-Leading Order QCD Predictions for Top-Quark Pair Production with Up to Two Jets Merged with a Parton Shower.

Hoche, S. ; Krauss, F. ; Maierhofer, P. ; Pozzorini, S. ; Schonherr, M. ; Siegert, F.

Technical Information Center Oak Ridge Tennessee

关键词: Quantum chromodynamics;    Quarks;    Pair production;    Cross sections;    Decay;   

RP-ID  :  DE141134556

学科分类：工程和技术（综合）

美国|英语

来源: National Technical Reports Library

【 摘 要 】

The authors present differential cross sections for the production of top-quark pairs in conjunction with up to two jets, computed at next-to leading order in perturbative QCD and consistently merged with a parton shower in the SHERPA+OPENLOOPS framework. Top quark decays including spin correlation effects are taken into account at leading order accuracy. The calculation yields a unified description of top-pair plus multi-jet production, and detailed results are presented for various key observables at the Large Hadron Collider. A large improvement is found for the total transverse energy spectrum, which plays a prominent role in searches for physics beyond the Standard Model.