First results from LHCf for forward physics in ?s = 7TeV proton-proton interactions

The LHCf Collaboration has completed the first step of its scheduled physics program for the study of emission of neutral particles in the forward region of proton-proton (pp) interactions at LHC. Between 2009 and 2010 the LHCf experiment has successfully taken data at 900 GeV and 7TeV total energy in the center-of-mass frame of reference (CM). After a short presentation of the experimental apparatus, the results for the ?-ray spectrum at ?s = 7TeV are presented in this paper. © CERN.