Measurement of forward photon production cross-section in proton–proton collisions at s=13TeV with the LHCf detector

Adriani, O.; Berti, E.; Bonechi, L.; Bongi, M.; D'Alessandro, R.; Haguenauer, M.; Itow, Y.; Iwata, T.; Kasahara, K.; Makino, Y.; Masuda, K.; Matsubayashi, E.; Menjo, H.; Muraki, Y.; Papini, P.; Ricciarini, S.; Sako, T.; Sakurai, N.; Shinoda, M.; Suzuki, T.; Tamura, T.; Tiberio, A.; Torii, S.; Tricomi, A.; Turner, W. C.; Ueno, M.; Zhou, Q. D.

doi:10.1016/j.physletb.2017.12.050

In this paper, we report the production cross-section of forward photons in the pseudorapidity regions of eta > 10.94 and 8.99 > eta > 8.81, measured by the LHCf experiment with proton-proton collisions at root s = 13 TeV. The results from the analysis of 0.191 nb(-1 )of data obtained in June 2015 are compared to the predictions of several hadronic interaction models that are used in air-shower simulations for ultra-high-energy cosmic rays. Although none of the models agree perfectly with the data, EPOS-LHC shows the best agreement with the experimental data among the models.

Measurement of forward photon production cross-section in proton–proton collisions at s=13TeV with the LHCf detector / Adriani, O.; Berti, E.; Bonechi, L.; Bongi, M.; D'Alessandro, R.; Haguenauer, M.; Itow, Y.; Iwata, T.; Kasahara, K.; Makino, Y.; Masuda, K.; Matsubayashi, E.; Menjo, H.*; Muraki, Y.; Papini, P.; Ricciarini, S.; Sako, T.; Sakurai, N.; Shinoda, M.; Suzuki, T.; Tamura, T.; Tiberio, A.; Torii, S.; Tricomi, A.; Turner, W.C.; Ueno, M.; Zhou, Q.D.. - In: PHYSICS LETTERS. SECTION B. - ISSN 0370-2693. - ELETTRONICO. - 780:(2018), pp. 233-239. [10.1016/j.physletb.2017.12.050]