Get started
Work

Study on large zenith angle air showers with LHAASO-KM2A

Year: 2025
Type: conference-paper
Abstract: At large zenith angles (LZAs）, the electromagnetic component (EMC) of conventional air showers undergoes substantial attenuation in the atmosphere, being significantly reduced long before reaching the ground. This attenuation creates a unique observational scenario where horizontal air showers (HAS) emerge as a “well-shielded laboratory.” In this special environment, penetrating particles like high-energy muons and cosmic neutrinos can be detected more effectively, as they leave characteristic traces that are distinguishable from the attenuated EMC-dominated showers. This presentation will showcase characteristic events recorded by LHAASO-KM2A at LZAs, including detailed phenomenology of HAS as observed by the detector. Additionally, we will present neutrino flux constraints associated with GRB 221009A, along with analyses of the other gamma-ray-bursts in 2022 that fell within the observational window of LHAASO-KM2A.
DOI: 10.22323/1.501.0277
Authors: Quanbu GOU, Zihan Yang, Xishui Tian, Qinyuan Zhang, Lifeng Chen, Quan Zhang, Xiangting Liu, Zhuo Li, DiSciascio Giuseppe, Sujie Lin, Mingming Kang, Shuwang Cui, Hao Zhou, Qingwen Tang
Institutions: Chinese Academy of Sciences, Institute of High Energy Physics, Shanghai Jiao Tong University, Peking University, Nanchang University, Hebei Normal University, Sun Yat-sen University, Sichuan University
Language: English
Open Access status: hybrid
OpenAlex ID: W4414438236
FWCI:
Cites:
Cited by:
Related to: