Journal of High Energy Physics (Oct 2023)
Measurement of the forward η meson production rate in p-p collisions at s $$ \sqrt{\textrm{s}} $$ = 13 TeV with the LHCf-Arm2 detector
- O. Adriani,
- E. Berti,
- P. Betti,
- L. Bonechi,
- M. Bongi,
- R. D’Alessandro,
- S. Detti,
- M. Hagenauer,
- Y. Itow,
- K. Kasahara,
- Y. Kitagami,
- M. Kondo,
- Y. Matsubara,
- H. Menjo,
- Y. Muraki,
- K. Ohashi,
- P. Papini,
- G. Piparo,
- S. Ricciarini,
- T. Sako,
- N. Sakurai,
- M. Scaringella,
- Y. Shimizu,
- T. Tamura,
- A. Tiberio,
- S. Torii,
- A. Tricomi,
- W. C. Turner,
- K. Yoshida
Affiliations
- O. Adriani
- INFN, Section of Firenze
- E. Berti
- INFN, Section of Firenze
- P. Betti
- INFN, Section of Firenze
- L. Bonechi
- INFN, Section of Firenze
- M. Bongi
- INFN, Section of Firenze
- R. D’Alessandro
- INFN, Section of Firenze
- S. Detti
- INFN, Section of Firenze
- M. Hagenauer
- Ecole-Polytechnique
- Y. Itow
- Institute for Space-Earth Environmental Research, Nagoya University
- K. Kasahara
- Faculty of System Engineering, Shibaura Institute of Technology
- Y. Kitagami
- Institute for Space-Earth Environmental Research, Nagoya University
- M. Kondo
- Institute for Space-Earth Environmental Research, Nagoya University
- Y. Matsubara
- Institute for Space-Earth Environmental Research, Nagoya University
- H. Menjo
- Institute for Space-Earth Environmental Research, Nagoya University
- Y. Muraki
- Institute for Space-Earth Environmental Research, Nagoya University
- K. Ohashi
- Institute for Space-Earth Environmental Research, Nagoya University
- P. Papini
- INFN, Section of Firenze
- G. Piparo
- INFN, Section of Catania
- S. Ricciarini
- INFN, Section of Firenze
- T. Sako
- Institute for Cosmic Ray Research (ICRR), University of Tokyo
- N. Sakurai
- Tokushima University
- M. Scaringella
- INFN, Section of Firenze
- Y. Shimizu
- Department of Applied Physics, Kanagawa University
- T. Tamura
- Department of Applied Physics, Kanagawa University
- A. Tiberio
- INFN, Section of Firenze
- S. Torii
- Waseda Research Institute for Science and Engineering (RISE), Waseda University
- A. Tricomi
- INFN, Section of Catania
- W. C. Turner
- Lawrence Berkeley National Laboratory (LBNL)
- K. Yoshida
- Faculty of System Engineering, Shibaura Institute of Technology
- DOI
- https://doi.org/10.1007/JHEP10(2023)169
- Journal volume & issue
-
Vol. 2023,
no. 10
pp. 1 – 22
Abstract
Abstract The forward η mesons production has been observed by the Large Hadron Collider forward (LHCf) experiment in proton-proton collision at s $$ \sqrt{s} $$ = 13 TeV. This paper presents the measurement of the inclusive production rate of η in p T < 1.1 GeV/c, expressed as a function of the Feynman-x variable. These results are compared with the predictions of several hadronic interaction models commonly used for the modelling of the air showers produced by ultra-high energy cosmic rays. This is both the first measurement of η mesons from LHCf and the first time a particle containing strange quarks has been observed in the forward region for high-energy collisions. These results will provide a powerful constraint on hadronic interaction models for the purpose of improving the understanding of the processes underlying the air showers produced in the Earth’s atmosphere by ultra-energetic cosmic rays.
Keywords
