T. K. Sako

Measurement of forward neutral pion transverse momentum spectra for √s=7TeV proton-proton collisions at the LHC

The inclusive production rate of neutral pions in the rapidity range greater than

Measurement of zero degree inclusive photon energy spectra for s=900GeV proton–proton collisions at LHC

y=8.9

Transverse-momentum distribution and nuclear modification factor for neutral pions in the forward-rapidity region in proton-lead collisions at s NN =5.02 TeV

has been measured by the Large Hadron Collider forward (LHCf) experiment during LHC

Luminosity determination in √s = 7 TeV proton collisions using the LHCf Front Counter at LHC

\sqrt{s}=7

Study of radiation hardness of Gd2SiO5 scintillator for heavy ion beam

\,TeV proton-proton collision operation in early 2010. This paper presents the transverse momentum spectra of the neutral pions. The spectra from two independent LHCf detectors are consistent with each other and serve as a cross check of the data. The transverse momentum spectra are also compared with the predictions of several hadronic interaction models that are often used for high energy particle physics and for modeling ultra-high-energy cosmic-ray showers.

Early results of the LHCf experiment and their contribution to ultra-high-energy cosmic ray physics

Abstract The inclusive photon energy spectra measured by the Large Hadron Collider forward (LHCf) experiment in the very forward region of LHC proton–proton collisions at s = 900 GeV are reported. The results from the analysis of 0.30 nb−1 of data collected in May 2010 in the two pseudorapidity regions of η > 10.15 and 8.77 η 9.46 are compared with the predictions of the hadronic interaction models DPMJET 3.04, EPOS 1.99, PYTHIA 8.145, QGSJET II-03 and SIBYLL 2.1, which are widely used in ultra-high energy cosmic ray experiments. EPOS 1.99 and SIBYLL 2.1 show a reasonable agreement with the spectral shape of the experimental data, whereas they predict lower cross-sections than the data. The other models, DPMJET 3.04, QGSJET II-03 and PYTHIA 8.145, are in good agreement with the data below 300 GeV but predict harder energy spectra than the data above 300 GeV. The results of these comparisons exhibited features similar to those for the previously reported data for s = 7 TeV collisions.

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

The transverse momentum (

Performance study for the photon measurements of the upgraded LHCf calorimeters with Gd2SiO5 (GSO) scintillators

p_\text{T}

Physical Society of Japan : Recent Results from the LHCf Experiment

) distribution for inclusive neutral pions in the very forward rapidity region has been measured, with the Large Hadron Collider forward detector (LHCf), in proton--lead collisions at nucleon-nucleon center-of-mass energies of

Measurement of high energy cosmic rays by the new Tibet hybrid experiment

\sqrt{s_{NN}} = 5.02