Primary proton and helium spectra at energy range from 50 TeV to 1015 eV observed with (YAC-I + Tibet-III) hybrid experiment

THE TIBET ASγ COLLABORATION

研究成果

抄録

A new EAS hybrid experiment has been designed by constructing a YAC (Yangbajing Air shower Core detector array) inside the existing Tibet-III air shower array. The first step of YAC called”YAC-I” has been successfully carried out in 2009-2010 together with Tibet-III air-shower array. YAC-II has also been operated from 2011. In this proceeding, the primary proton and helium spectra at energy range from 50 TeV to 1015 eV derived from YAC-I data based on the newest interaction model EPOS-LHC (v.3400), QGSJETII-04 and SIBYLL2.1 are reported. The obtained (P+He) spectra is smoothly connected with direct observation data below 100 TeV and also with our previously reported results at higher energies within statistical errors. The knee of the (P+He) spectra is located around 400 TeV. The interaction model dependence in deriving the primary (P+He) spectra are found to be small (less than 25% in absolute intensity, 10% in position of the knee), and the composition model dependence is less than 10% in absolute intensity.

本文言語English
ホスト出版物のタイトルProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
出版社Sociedade Brasileira de Fisica
2013-October
ISBN(電子版)9788589064293
出版ステータスPublished - 2013 1 1
イベント33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
継続期間: 2013 7 22013 7 9

Other

Other33rd International Cosmic Rays Conference, ICRC 2013
国/地域Brazil
CityRio de Janeiro
Period13/7/213/7/9

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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