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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    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.

    Original languageEnglish
    Title of host publicationProceedings of the 33rd International Cosmic Rays Conference, ICRC 2013
    PublisherSociedade Brasileira de Fisica
    Volume2013-October
    ISBN (Electronic)9788589064293
    Publication statusPublished - 2013 Jan 1
    Event33rd International Cosmic Rays Conference, ICRC 2013 - Rio de Janeiro, Brazil
    Duration: 2013 Jul 22013 Jul 9

    Other

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

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    Keywords

    • Hadron interaction
    • LHC
    • UHECR

    ASJC Scopus subject areas

    • Nuclear and High Energy Physics

    Cite this

    Menjo, H., Adriani, O., Bonechi, L., Bongi, M., Castellini, G., D’Alessandro, R., Haguenauer, M., Itow, Y., Kasahara, K., Kawade, K., Makino, Y., Masuda, K., Matsubayashi, E., Mitsuka, G., Muraki, Y., Papini, P., Perrot, A. L., Pfeiffer, D., Ricciarini, S., ... Turner, W. C. (2013). The results from LHCf: Very forward measurements for cosmic ray interactions. In Proceedings of the 33rd International Cosmic Rays Conference, ICRC 2013 (Vol. 2013-October). Sociedade Brasileira de Fisica.