Recent Results from the LHCf Experiment

H. Menjo , O. Adriani , E. Berti , L. Bonechi , M. Bongi , G. Castellini , R. d'Alessandro , M. del Prete , M. Haguenauer (1) , 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. Sako , Y. Shimizu , Y. Sugiura , T. Suzuki , T. Tamura , A. Tiberio , S. Torii , A. Tricomi , W.C. Turner , Q. Zhou

1 X - École polytechnique

The LHCf experiment is an unique dedicated experiment for measurement of very forward particle production relevant to cosmic-ray air shower developments. The LHCf measured the spectra for forward photons, neutral pions and neutrons at $\sqrt{s}$ = 7 TeV p–p collisions and the nuclear modification factor for forward neutral pions at $\sqrt{s}$ = 5 TeV p-Pb. No hadronic interaction models used in air shower developments of very high energy cosmic-rays is able to reproduce all LHCf data reasonably while some of models are able to reproduce LHCf data partially.

Mots clés: LHCf; UHECR; hadronic interaction; talk: Chiba 2014/03/19; p p: scattering; p nucleus: interaction; lead; cosmic radiation: VHE; interaction: model; pi0: forward production; photon: forward production; LHC-F; showers; air; nuclear matter: effect; transverse momentum: momentum spectrum; photon: energy spectrum: measured; pi0: transverse momentum; n: transverse momentum; experimental results; 5000 GeV-cms/nucleon; 7000 GeV-cms

Domaines: Physique des Hautes Energies - Expérience [hep-ex]

H. Menjo, O. Adriani, E. Berti, L. Bonechi, M. Bongi, et al.. Recent Results from the LHCf Experiment. 7th International Workshop on Very High Energy Particle Astronomy, Mar 2014, Chiba, Japan. pp.011001, ⟨10.7566/JPSCP.15.011001⟩. ⟨hal-01554900⟩