The results from LHCf: Very forward measurements for cosmic ray interactions

H. Menjo*, O. Adriani, L. Bonechi, M. Bongi, G. Castellini, R. D’Alessandro, M. Haguenauer, Y. Itow, K. Kasahara, K. Kawade, Y. Makino, K. Masuda, E. Matsubayashi, G. Mitsuka, Y. Muraki, P. Papini, A. L. Perrot, D. Pfeiffer, S. Ricciarini, T. SakoY. Shimizu, T. Suzuki, T. Tamura, Shoji Torii, A. Tricomi, W. C. Turner


    研究成果: Conference contribution


    The LHCf experiment is an unique dedicated experiment for measurement of very forward particle production relevant to cosmic-ray air shower developments by using small electromagnetic imaging calorimeters at the zero degree of the LHC interaction point, IP1. The operationa with p-p collisions at s = 900 GeV and 7 TeV have been done in 2009 and 2010. The results of forward production spectra of photons and π0s are compared with the existing cosmic ray interaction models, SYBILL, QGSJETII, DPMJET3, and EPOS1.99. None of them could completely reproduce the data. On-going hadron analysis will be also important to understand inelas-ticity of collisions. LHCf has also completed data taking for LHC p-Pb collisions to study nuclear effect relevant to air shower development. This is also very important to validate composition measurements by air-shower experiments based on XMAX. Current achievement of the LHCf experiment and possible future experiments at p-A and/or A-A collisions at LHC and RHIC are presented.

    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
    出版ステータスPublished - 2013 1月 1
    イベント33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
    継続期間: 2013 7月 22013 7月 9


    Other33rd International Cosmic Rays Conference, ICRC 2013
    CityRio de Janeiro

    ASJC Scopus subject areas

    • 核物理学および高エネルギー物理学


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