Recent status and prospects of LHCf and RHICf Takashi Sako for the LHCf and RHICf Collaborations

The Large Hadron Collider forward (LHCf) and the Relativistic Heavy Ion Collider forward (RHICf) experiments are dedicated to measure neutral particles produced around zero degree of the hadron interactions. In this paper, recent results ofLHCf on photons, neutrons and π 0 's mainly obtained from 13 TeV p-p collisionsare summarized. Differential cross sections are compared with predictions of various event generators. Some new analyses such as the joint analyses withATLAS, total energy and cross section as a function of pseudorapidity are also presented. A new result of RHICf for the first detection of a finite single-spinasymmetry of π 0 production at very forward pseudorapidity region, η >6, in the polarized p-p collisions is also presented. Plan of the LHCf in LHC Run 3 is also introduced.