Accurate and robust methods for direct background estimation in resonant anomaly detection

Autor:	Das, Ranit, Finke, Thorben, Hein, Marie, Kasieczka, Gregor, Krämer, Michael, Mück, Alexander, Shih, David
Rok vydání:	2024
Předmět:	High Energy Physics - Phenomenology High Energy Physics - Experiment Physics - Data Analysis Statistics and Probability
Druh dokumentu:	Working Paper
Popis:	Resonant anomaly detection methods have great potential for enhancing the sensitivity of traditional bump hunt searches. A key component of these methods is a high quality background template used to produce an anomaly score. Using the LHC Olympics R&D dataset, we demonstrate that this background template can also be repurposed to directly estimate the background expectation in a simple cut and count setup. In contrast to a traditional bump hunt, no fit to the invariant mass distribution is needed, thereby avoiding the potential problem of background sculpting. Furthermore, direct background estimation allows working with large background rejection rates, where resonant anomaly detection methods typically show their greatest improvement in significance. Comment: 26 pages, 9 figures, 2 tables
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2411.00085 Zobrazit plný text záznamu View this record from Arxiv