Observation of Horizontal Air Showers with LHAASO-KM2A

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
'LHAASO-KM2A is a sub-array of the Large High Altitude Air Shower Observatory (LHAASO) with an area of 1.3 km2. It consists of 5195 electromagnetic detectors (EDs, 1 m2 each) and 1171 muon detectors (MDs, 36 m2 each). Horizontal Air Showers (HAS) are a fundamental tool to detect penetrating particles like neutrinos and to study hadronic interactions. HAS detected at ground are mainly constituted by secondary muons. In this contribution first observations of HAS with EDs of LHAASO-KM2A are reported. We discuss the zenith angle distribution of EAS and the transition from electromagnetic-dominated showers to muon-dominated ones above a zenith angle of 60 degree. Muon contents together with hadronic interaction models will also be discussed.'

Authors: Quanbu Gou | Zhuo Li | Giuseppe Di Sciascio | Chao Hou | Jiangtao Liu | Xiaochuan Chang | Hongkui Lv | Lili Yang | Sujie Lin | Andrea Addazi | Xuewen Liu | Mingming Kang | Antonino Marciano | Jinsheng Gou | Shiyu Yin | Yaping Wang | Zihan Yang | Xishui Tian | Qinyuan Zhang | Chengyu Shao | Zhibo Yu | Jiaming Li | Qunfeng Jiang | Lin Liu | Jie Dou | Xuwei Ou | Yukun Xue | lingyi Fu | Qianxun Zuo | Zhiheng Wang | Yuanqing Wang | Chenyang Gong
Collaboration: Lhaaso

Indico-ID: 952
Proceeding URL: https://pos.sissa.it/395/364