M. Kondo, O. Adriani, E. Berti, P. Betti, L. Bonechi, M. Bongi, R. D’Alessandro, S. Detti, M. Haguenauer, Y. Itow, K. Kasahara, Y. Kitagami, Y. Matsubara, H. Menjo, Y. Muraki, K. Ohashi, P. Papini, G. Piparo, S. Ricciarini, T. Sako, N. Sakurai, M. Scaringella, Y. Shimizu, T. Tamura, A. Tiberio, S. Torii, A. Tricomi, W. Turner, K. Yoshida, Z. Citron, B. Cole, M. Grosse-Perdekamp, Chad Lantz, R. Longo, D. MacLean, Y. Moyal, S. Shenkar, P. Steinberg, L. Sudit, A. Tate
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Performance evaluation of LHCf-ATLAS ZDC joint measurement using proton beam
Measurements of forward neutrons in pp collisions will allow us to investigate π-p cross-section via one-pion exchange process, which are important for air shower development. However, the precision of these measurements is limited by the energy resolution of the LHCf detectors. To improve it, a joint measurement with the ATLAS ZDC was planned. In 2021, a beam test was conducted to evaluate the performance of the joint measurement of the LHCf-Arm1 and ZDC detectors using proton beams of 350 GeV at SPS. Combining the LHCf data with the ZDC data, we confirmed that the energy resolution improved from about 40% to 21.4%.
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