{"paper":{"title":"Measurement of zero degree single photon energy spectra for sqrt(s) = 7TeV proton-proton collisions at LHC","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Faus, A.-L. Perrot, A. Tricomi, A. Viciani, D. Macina, G. Castellini, G. Mitsuka, H. Menjo, J. Velasco, K. Fukatsu, K. Kasahara, K. Kawade, K. Masuda, K. Noda, K. Suzuki, K. Taki, K. Yoshida, L. Bonechi, M. Bongi, M. Haguenauer, M. Nakai, O. Adriani, P. Papini, R. D'Alessandro, S. Ricciarini, S. Torii, T. Mase, T. Sako, T. Suzuki, T. Tamura, W. C. Turner, Y. Itow, Y. Matsubara, Y. Muraki, Y. Shimizu","submitted_at":"2011-04-28T04:21:57Z","abstract_excerpt":"In early 2010, the Large Hadron Collider forward (LHCf) experiment measured very forward neutral particle spectra in LHC proton-proton collisions. From a limited data set taken under the best beam conditions (low beam-gas background and low occurance of pile-up events), the single photon spectra at sqrt(s)=7TeV and pseudo-rapidity (eta) ranges from 8.81 to 8.99 and from 10.94 to infinity were obtained for the first time and are reported in this paper. The spectra from two independent LHCf detectors are consistent with one another and serve as a cross check of the data. The photon spectra are a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1104.5294","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}