2021/05/18 by Yasser Radkhorrami, Radkhorrami, Yasser, Jenny List +1
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #High Energy Physics - Phenomenology (hep-ph) #High-Energy Particle Collisions Research #Particle Detector Development and Performance #Particle physics theoretical and experimental studies
paper · pdf · doi:10.48550/arxiv.2105.08480
openalex publication_date 2021/05/18 · openalex created_date 2022/07/25 · openalex updated_date 2026/07/28
The Higgs boson decay modes to b and c quarks are crucial for many Higgs\nprecision measurements. The presence of semileptonic decays in the jets\noriginating from b and c quarks causes missing energy due to the\nundetectable neutrinos. A correction for the missing neutrino momenta can be\nderived from the kinematics of the decay up to a two-fold ambiguity. The\ncorrect solution can be identified by a kinematic fit, which exploits the\nwell-known initial state at an e+e- collider by adjusting the measured\nquantities within their uncertainties to fulfill the kinematic constraints. The\nParticleFlow concept, based on the reconstruction of individual particles in a\njet allows understanding the individual jet-level uncertainties at an\nunprecedented level. The modeling of the jet uncertainties and the resulting\nfit performance will be discussed for the example of the ILD detector. Applied\nto H\→ b\b/c\c events, the combination of the neutrino\ncorrection with the kinematic fit improves the Higgs mass reconstruction\nsignificantly, both in terms of resolution and peak position.\n