Recent results from the LHCf and RHICf experiments

Y. Itow , K. Masuda , H. Menjo , Y. Muraki , K. Ohashi , K. Sato , M. Ueno , Q.D. Zhou , T. Sako , K. Kasahara , T. Suzuki , S. Torii , T. Tamura , N. Sakurai , M. Haguenauer (1) , W.C. Turner , O. Adriani , E. Berti , L. Bonechi , M. Bongi , R. d'Alessandro , P. Papini , S. Ricciarini , A. Tiberio , A. Tricomi , Y. Goto , I. Nakagawa , R. Seidl , J.S. Park , M.H. Kim , K. Tanida , B. Hong

1 X - École polytechnique

The Large Hadron Collider forward and the Relativistic Heavy Ion Collider forward experiments measured forward particles produced in high-energy hadron collisions at the LHC and RHIC. Using compact calorimeters neutral particles produced in pseudorapidities η >8.4 and η >6.0 are observed by the respective experiments. Because the collision energies ranging from 0.51 TeV to 13 TeV correspond to the cosmic-ray equivalent energies of 1014 to 1017 eV, the measurements are important to understand the hadronic interaction relevant to extensive air shower measurements. This paper reviews recent results of LHCf and initial performance of RHICf that took data in the 2017 RHIC operation.

Mots clés: talk: Nagoya 2018/05/21; showers: atmosphere; Brookhaven RHIC Coll; CERN LHC Coll; LHC-F; neutral particle: particle identification; cosmic radiation; calorimeter; performance; heavy ion: scattering; forward production; rapidity; experimental results

Domaines: Physique des Hautes Energies - Expérience [hep-ex]; Astrophysique [astro-ph]

Y. Itow, K. Masuda, H. Menjo, Y. Muraki, K. Ohashi, et al.. Recent results from the LHCf and RHICf experiments. 20th International Symposium on Very High Energy Cosmic Ray Interactions, May 2018, Nagoya, Japan. pp.05004, ⟨10.1051/epjconf/201920805004⟩. ⟨hal-02144292⟩