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Hadronic interaction at LHC: review for the LHCf and air shower related measurements
/ Sako, Takashi (Tokyo U., ICRR)
Fifteen years have past since the first beam collisions at the Large Hadron Collider (LHC) in CERN.Not only the discovery of the Higgs particle, the LHC made a significant contribution to the cosmic-ray community.Its designed collision energy $\sqrt{s}$=14TeV corresponds to the collision of a 10$^{17}$eV proton on a protonat the rest frame, which is the energy range handled by the air shower observations.The particle productions in the minimum-bias events and very-forward events have been extensively measured by thevarious dedicated detectors at the LHC, and they serve crucial tests for the hadronic interaction models used in the cosmic-ray air shower simulations. In addition, collisions realized at various $\sqrt{s}$ are used to test the energy evolution of the hadronic interaction.In this paper, we will review the key measurements at the LHC relevant to the air shower simulations especially focusingon the forward measurements.We will start the review from a quick outlook of some important concepts used in the high-energy and collider physics..
2025 - 13 p.
- Published in : PoS UHECR2024 (2025) 032
Fulltext: PDF;
In : 7th International Symposium on Ultra High Energy Cosmic Rays UHECR2024, Malargue, 17 Nov - 21 Nov 2024, pp.032
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LHCf Run II physics results in proton-proton collisions at $\sqrt{s}$ = 13 TeV
/ Tiberio, A (INFN, Florence) ; Adriani, O (INFN, Florence ; Florence U.) ; Berti, E (INFN, Florence ; Florence U.) ; Betti, P (INFN, Florence ; Florence U.) ; Bonechi, L (INFN, Florence) ; Bongi, M (INFN, Florence ; Florence U.) ; D'Alessandro, R (INFN, Florence ; Florence U.) ; Detti, S (INFN, Florence) ; Haguenauer, M (Ecole Polytechnique) ; Itow, Y (Nagoya U., ISEE ; KMI, Nagoya) et al.
The LHC-forward experiment (LHCf), located at the Large Hadron Collider (LHC), is designed to
measure the production cross section of neutral particles in the very-forward region, covering the
pseudorapidity region above 8.4 (up to zero-degree particles). By measuring the very-forward
particle production rates at the highest energy possible at an accelerator, LHCf will provide
fundamental informations to improve phenomenological hadronic interaction models used in the
simulation of air-showers induced by ultra-high-energy cosmic rays in the atmosphere. [...]
2022 - 6 p.
- Published in : PoS ICHEP2022 (2022) 121
Fulltext: PDF;
In : 41st International Conference on High Energy Physics (ICHEP 2022), Bologna, Italy, 6 - 13 Jul 2022, pp.121
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Measurement of the forward η meson production rate in p-p collisions at $ \sqrt{\textrm{s}} $ = 13 TeV with the LHCf-Arm2 detector
/ Piparo, G. (INFN, Catania ; Catania U.) ; Adriani, O. (INFN, Florence ; Florence U.) ; Berti, E. (INFN, Florence ; Florence U.) ; Betti, P. (INFN, Florence ; Florence U.) ; Bonechi, L. (INFN, Florence ; Florence U.) ; Bongi, M. (INFN, Florence ; Florence U.) ; D'Alessandro, R. (INFN, Florence ; Florence U.) ; Detti, S. (INFN, Florence ; Florence U.) ; Hagenauer, M. (LLR, Palaiseau) ; Itow, Y. (Nagoya U., ISEE ; KMI, Nagoya) et al.
/LHCf
The forward η mesons production has been observed by the Large Hadron Collider forward (LHCf) experiment in proton-proton collision at √s=13 TeV. This paper presents the measurement of the inclusive production rate of η in pT < 1.1 GeV/c, expressed as a function of the Feynman-x variable. [...]
arXiv:2305.06633; CERN-EP-2023-076.-
Geneva : CERN, 2023-10-27 - 19 p.
- Published in : JHEP 2310 (2023) 169
Draft (restricted): PDF; Fulltext: CERN-EP-2023-076 - PDF; 2305.06633 - PDF; document - PDF;
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Results from the LHCf Run II in proton-proton collisions at $\sqrt{s}$ = 13 TeV
/ Tiberio, Alessio (INFN, Florence) ; Adriani, Oscar (INFN, Florence ; Florence U.) ; Berti, Eugenio (INFN, Florence ; Florence U.) ; Bonechi, Lorenzo (INFN, Florence) ; Bongi, Massimo (INFN, Florence ; Florence U.) ; D'Alessandro, Raffaello (INFN, Florence ; Florence U.) ; Castellini, Guido (IFAC, Florence) ; Haguenauer, Maurice (Ec. Polytech., Palaiseau (main)) ; Itow, Yoshitaka (Nagoya U., ISEE ; Nagoya U. (main)) ; Kasahara, Katsuaki (Shibaura Inst. Tech.) et al.
The LHCf experiment, at the Large Hadron Collider (LHC), consists of two small independent calorimeters placed 140 metres away, on opposite sides of the ATLAS interaction point (IP1). LHCf has the capability to measure zero-degree neutral particles, covering the pseudorapidity region above 8.4. [...]
2022 - 6 p.
- Published in : PoS EPS-HEP2021 (2022) 105
Fulltext: PDF;
In : European Physics Society conference on High Energy Physics 2021, Online, Online, 26 - 30 Jul 2021, pp.105
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A simulation study for one-pion exchange contribution on very forward neutron productions in ATLAS-LHCf common events
/ Ohashi, Ken (Nagoya U., ISEE) ; Menjo, Hiroaki (Nagoya U., ISEE) ; Itow, Yoshitaka (Nagoya U., ISEE ; KMI, Nagoya) ; Sako, Takashi (Tokyo U., ICRR)
Interpretations of the mass composition of ultra-high energy cosmic rays are unclear owing to uncertainties in the hadronic interaction models. Therefore, validations of hadronic interaction models via experiments are required. [...]
SISSA, 2022 - 8 p.
- Published in : PoS ICRC2021 (2022) 190
Fulltext: PDF;
In : 37th International Cosmic Ray Conference (ICRC 2021), Berlin, Germany, 15 - 22 Jul 2021, pp.190
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Status and Prospects of the LHCf and RHICf experiments
/ LHCf Collaboration
Precise understanding of hadronic interactions at high energies is a key to improve mass composition measurements of very high energy cosmic-rays and to solve the muon excess issue observed in high energy cosmic-ray experiments using an air-shower technique. The LHCf and RHICf experiments measures the differential production cross sections of very forward neutral particle as photons, neutral pions and neutrons at LHC and RHIC, respectively. [...]
SISSA, 2022 - 9 p.
- Published in : PoS ICRC2021 (2022) 301
Fulltext: PDF;
In : 37th International Cosmic Ray Conference (ICRC 2021), Berlin, Germany, 15 - 22 Jul 2021, pp.301
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