A new observable to measure the top quark mass at hadron colliders

Pramana

Simone Alioli1³  Adrian irles3¹  Peter Uwer²  Sven Moch⁴  Juan Fuster¹  Marcel Vos¹ 

[1] IFIC, Centre Mixte CSIC-Universitat de València, E-46071 València, Spain$$;Institut für Physik, Humboldt-Universität zu Berlin, Newtonstr. 15, 12489 Berlin, Germany$$;Ernest Orlando Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA$$;DESY, Platanenallee 6, 15738 Zeuthen, Germany$$

关键词: Top quark;    mass;    pole mass;    NLO;    cross-section;    ar{t} +$ jet;    POWHEG;    perturbative QCD.;   

DOI  :  

学科分类：物理（综合）

来源: Indian Academy of Sciences

【 摘 要 】

The $tar{t} + 1-{ext{jet}} + X$ differential cross-section in proton-proton collissions at 7 TeV centre of mass energy is investigated with respect to its sensitivity to the top quark mass. The analysis includes higher order QCD corrections at NLO. The impact of the renormalization scale (𝜇R), the factorization (𝜇F) scale and of the choice of different proton's PDF (parton distribution function) has been evaluated. In this study it is concluded that differential jet rates offer a promising option for alternative mass measurements of the top quark, with theoretical uncertainties below 1 GeV.

【 授权许可】

Unknown