تقرير
Production and decay of the Higgs boson in association with top quarks
العنوان: | Production and decay of the Higgs boson in association with top quarks |
---|---|
المؤلفون: | Stremmer, Daniel, Worek, Malgorzata |
المصدر: | JHEP 02 (2022) 196 |
سنة النشر: | 2021 |
المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
مصطلحات موضوعية: | High Energy Physics - Phenomenology, High Energy Physics - Experiment |
الوصف: | We report on the calculation of the next-lo-leading order QCD corrections to Higgs boson production and decay in association with top quarks. We consider leptonic decays of top quarks leading to the hadronic process $pp\to e^+\nu_e\, \mu^-\bar{\nu}_\mu \, b\bar{b}\,H\, (H\to X)$ at the LHC with $\sqrt{s}=13$ TeV. All resonant as well as non-resonant Feynman diagrams, interferences and off-shell effects are included for the top quark and $W$ gauge boson. Decays of the Higgs boson, on the other hand, are included in the narrow-width-approximation. Specifically, we consider Higgs boson decays into $b\bar{b}$, $\tau^+\tau^-$, $\gamma\gamma$ and $e^+e^-e^+e^-$. Numerical results are given at the integrated and differential fiducial level for various factorisation and renormalisation scale choices and different PDF sets. We study the main theoretical uncertainties that are associated with neglected higher order terms in the perturbative expansion and with different parametrisations of the PDFs. Furthermore, we examine the size of the off-shell effects by an explicit comparison to the calculation in the full narrow-width-approximation. Finally, the impact of the contributions induced by the bottom-quark parton density is investigated. Comment: 41 pages, 16 Figures, 6 Tables, version to appear in JHEP |
نوع الوثيقة: | Working Paper |
DOI: | 10.1007/JHEP02(2022)196 |
URL الوصول: | http://arxiv.org/abs/2111.01427 |
رقم الأكسشن: | edsarx.2111.01427 |
قاعدة البيانات: | arXiv |
DOI: | 10.1007/JHEP02(2022)196 |
---|