Title of article
Forward photon energy spectrum at LHC 7 TeV p–p collisions measured by LHCf
Author/Authors
Menjo، نويسنده , , H. and Adriani، نويسنده , , O. and Bongi، نويسنده , , M. and Castellini، نويسنده , , G. and DʹAlessandro، نويسنده , , R. and Fukatsu، نويسنده , , K. and Haguenauer، نويسنده , , M. and Itow، نويسنده , , Y. and Kasahara، نويسنده , , K. and Kawade، نويسنده , , K. and Macina، نويسنده , , D. and Mase، نويسنده , , T. and Masuda، نويسنده , , K. and Mitsuka، نويسنده , , G. and Muraki، نويسنده , , Y. and Nakai، نويسنده , , M. and Nod، نويسنده ,
Pages
4
From page
224
To page
227
Abstract
The LHCf experiment is one of the LHC forward experiments. The aim is to measure the energy and the transverse momentum spectra of photons, neutrons and π 0 ʹs at the very forward region (the pseudo-rapidity range of η > 8.4 ), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at s = 900 GeV and s = 7 TeV proton–proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at s = 7 TeV proton–proton collisions and the pseudo-rapidity ranges of η > 10.94 and 8.81 < η < 8.9 . The obtained spectra were compared with the predictions by several hadron interaction models and the models do not reproduce the experimental results perfectly.
Keywords
LHCf , Hadron interaction model , UHECRs
Journal title
Astroparticle Physics
Record number
2019821
Link To Document