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 pi(0)'s at the very forward region (the pseudo-rapidity range of eta > 8.4), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at root s = 900 GeV and root s = 7 TeV proton-proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at root s = 7 TeV proton-proton collisions and the pseudo-rapidity ranges of eta > 10.94 and 8.81 < eta < 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. (C) 2011 Elsevier B.V. All rights reserved.
Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf / H. Menjo;O. Adriani;M. Bongi;G. Castellini;R. D'Alessandro;K. Fukatsu;M. Haguenauer;Y. Itow;K. Kasahara;K. Kawade;D. Macina;T. Mase;K. Masuda;G. Mitsuka;Y. Muraki;M. Nakai;K. Noda;P. Papini;A. L. Perrot;S. Ricciarini;T. Sako;Y. Shimizu;K. Suzuki;T. Suzuki;K. Taki;T. Tamura;S. Torri;A. Tricomi;W. C. Turner. - In: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH. SECTION A, ACCELERATORS, SPECTROMETERS, DETECTORS AND ASSOCIATED EQUIPMENT. - ISSN 0168-9002. - STAMPA. - 692:(2012), pp. 224-227. [10.1016/j.nima.2011.12.071]
Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf
ADRIANI, OSCAR;BONGI, MASSIMO;D'ALESSANDRO, RAFFAELLO;
2012
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 pi(0)'s at the very forward region (the pseudo-rapidity range of eta > 8.4), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at root s = 900 GeV and root s = 7 TeV proton-proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at root s = 7 TeV proton-proton collisions and the pseudo-rapidity ranges of eta > 10.94 and 8.81 < eta < 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. (C) 2011 Elsevier B.V. All rights reserved.
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