The LHCf experiment is dedicated to verify the hadronic interaction models used in cosmic-ray physics. Forward baryon production is one of the keys to understand the air shower development. A preliminary results of neutral baryon spectra measured at very forward region of LHC s = 7TeV p-p collisions are presented in this paper. The responce of the detector for baryon measurement is studied based on MC simulations and a beam test at SPS. Experimental results at LHC are compared with the predictions from the known hadronic interaction models.
K. et al. (Tue,) studied this question.