Study of ttbb and ttW background modelling for ttH analyses

Autor:	Ferencz, Lars, Grevtsov, Kirill, Katzy, Judith, Knue, Andrea, van der Linden, Jan, McFayden, Josh, Moenig, Gianna, Pfeffer, Emanuel, Saibel, Andrej, Schroeder, Matthias, Thomas-Wilsker, Joshuha
Rok vydání:	2023
Předmět:	High Energy Physics - Experiment High Energy Physics - Phenomenology
Druh dokumentu:	Working Paper
Popis:	This note presents Monte Carlo generator comparisons of the ttbb and ttW processes at particle level. The aim is to compare the modelling of important backgrounds to ttH measurements in multi-lepton final states and in the ttH(H->bb) decay channel and the treatment of the associated theory uncertainties for a combination of the full Run-2 ttH results from ATLAS and CMS. As a first step, modelling and theory uncertainties as used in ATLAS an CMS are compared in the relevant analysis regions. Significant differences in the treatment of systematic uncertainties between the experiments have been observed in ttbb and ttW. As a first step, ATLAS and CMS agreed on a common reference value of the inclusive ttW cross section to allow direct comparisons between experiments. Comment: LHC Higgs WG report, 41 pages
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2301.11670 Zobrazit plný text záznamu View this record from Arxiv