EAS-TOP: The proton-air inelastic cross-section at √s ≈ 2 TeV

M. Aglietta; B. Alessandro; P. Antonioli; F. Arneodo; L. Bergamasco; M. Bertaina; E. Cantoni; A. Castellina; A. Chiavassa; B. D'ettorre Piazzoli; G. Di Sciascio; W. Fulgione; P. Galeotti; P. L. Ghia; A. Lima De Godoi; M. Iacovacci; G. Mannocchi; C. Morello; G. Navarra; O. Saavedra; G. C. Trinchero; S. Valchierotti; P. Vallania; S. Vernetto; C. Vigorito

EAS-TOP: The proton-air inelastic cross-section at √s ≈ 2 TeV

M. Aglietta, B. Alessandro, P. Antonioli, F. Arneodo, L. Bergamasco, M. Bertaina, E. Cantoni, A. Castellina, A. Chiavassa, B. D'ettorre Piazzoli, G. Di Sciascio, W. Fulgione, P. Galeotti, P. L. Ghia, A. Lima De Godoi, M. Iacovacci, G. Mannocchi, C. Morello, G. Navarra, O. SaavedraG. C. Trinchero, S. Valchierotti, P. Vallania, S. Vernetto, C. Vigorito

Physics

Research output: Contribution to conference › Paper › peer-review

Abstract

The proton-air inelastic cross section measurement at √s ≈ 2 TeV from the EAS-TOP Extensive Air Shower experiment is reported. The technique exploits cosmic ray proton primaries in the energy region E₀ = (1.5 ÷ 2.5) 10¹⁵ eV, studying the absorption length of their cascades when detected at maximum development. Primary energies are selected through the EAS muon number (N_μ), and proton originated cascades at maximum development by means of the shower size (N_e). The shower longitudinal development and detection fluctuations are determined by means of simulations performed using the CORSIKA code and the QGSJET interaction model. The simulations provide the conversion factor (k=1.15±0.05) from the observed attenuation length (λ_obs^exp =76.0±3.8 g/cm²) to the interaction length (λ_p-air=λ_int^exp =66.1±4.4 g/cm²). The obtained value of the p-air inelastic cross section at √s ≈ 2 TeV is σ^p-airinel =365±24(stat)-28(sys) mb. The statistical and systematic uncertainties, as well as the connections with the pp total cross section measurements are discussed.

Original language	English (US)
Pages	27-30
Number of pages	4
State	Published - 2007
Event	30th International Cosmic Ray Conference, ICRC 2007 - Merida, Yucatan, Mexico Duration: Jul 3 2007 → Jul 11 2007

Other

Other	30th International Cosmic Ray Conference, ICRC 2007
Country/Territory	Mexico
City	Merida, Yucatan
Period	7/3/07 → 7/11/07

ASJC Scopus subject areas

Nuclear and High Energy Physics

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Aglietta, M., Alessandro, B., Antonioli, P., Arneodo, F., Bergamasco, L., Bertaina, M., Cantoni, E., Castellina, A., Chiavassa, A., D'ettorre Piazzoli, B., Di Sciascio, G., Fulgione, W., Galeotti, P., Ghia, P. L., Lima De Godoi, A., Iacovacci, M., Mannocchi, G., Morello, C., Navarra, G., ... Vigorito, C. (2007). EAS-TOP: The proton-air inelastic cross-section at √s ≈ 2 TeV. 27-30. Paper presented at 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, Mexico.

Aglietta, M, Alessandro, B, Antonioli, P, Arneodo, F, Bergamasco, L, Bertaina, M, Cantoni, E, Castellina, A, Chiavassa, A, D'ettorre Piazzoli, B, Di Sciascio, G, Fulgione, W, Galeotti, P, Ghia, PL, Lima De Godoi, A, Iacovacci, M, Mannocchi, G, Morello, C, Navarra, G, Saavedra, O, Trinchero, GC, Valchierotti, S, Vallania, P, Vernetto, S & Vigorito, C 2007, 'EAS-TOP: The proton-air inelastic cross-section at √s ≈ 2 TeV', Paper presented at 30th International Cosmic Ray Conference, ICRC 2007, Merida, Yucatan, Mexico, 7/3/07 - 7/11/07 pp. 27-30.

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title = "EAS-TOP: The proton-air inelastic cross-section at √s ≈ 2 TeV",

abstract = "The proton-air inelastic cross section measurement at √s ≈ 2 TeV from the EAS-TOP Extensive Air Shower experiment is reported. The technique exploits cosmic ray proton primaries in the energy region E0 = (1.5 ÷ 2.5) 1015 eV, studying the absorption length of their cascades when detected at maximum development. Primary energies are selected through the EAS muon number (Nμ), and proton originated cascades at maximum development by means of the shower size (Ne). The shower longitudinal development and detection fluctuations are determined by means of simulations performed using the CORSIKA code and the QGSJET interaction model. The simulations provide the conversion factor (k=1.15±0.05) from the observed attenuation length (λobsexp =76.0±3.8 g/cm2) to the interaction length (λp-air=λintexp =66.1±4.4 g/cm2). The obtained value of the p-air inelastic cross section at √s ≈ 2 TeV is σp-airinel =365±24(stat)-28(sys) mb. The statistical and systematic uncertainties, as well as the connections with the pp total cross section measurements are discussed.",

author = "M. Aglietta and B. Alessandro and P. Antonioli and F. Arneodo and L. Bergamasco and M. Bertaina and E. Cantoni and A. Castellina and A. Chiavassa and {D'ettorre Piazzoli}, B. and {Di Sciascio}, G. and W. Fulgione and P. Galeotti and Ghia, {P. L.} and {Lima De Godoi}, A. and M. Iacovacci and G. Mannocchi and C. Morello and G. Navarra and O. Saavedra and Trinchero, {G. C.} and S. Valchierotti and P. Vallania and S. Vernetto and C. Vigorito",

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language = "English (US)",

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T2 - 30th International Cosmic Ray Conference, ICRC 2007

AU - Aglietta, M.

AU - Alessandro, B.

AU - Antonioli, P.

AU - Arneodo, F.

AU - Bergamasco, L.

AU - Bertaina, M.

AU - Cantoni, E.

AU - Castellina, A.

AU - Chiavassa, A.

AU - D'ettorre Piazzoli, B.

AU - Di Sciascio, G.

AU - Fulgione, W.

AU - Galeotti, P.

AU - Ghia, P. L.

AU - Lima De Godoi, A.

AU - Iacovacci, M.

AU - Mannocchi, G.

AU - Morello, C.

AU - Navarra, G.

AU - Saavedra, O.

AU - Trinchero, G. C.

AU - Valchierotti, S.

AU - Vallania, P.

AU - Vernetto, S.

AU - Vigorito, C.

PY - 2007

Y1 - 2007

N2 - The proton-air inelastic cross section measurement at √s ≈ 2 TeV from the EAS-TOP Extensive Air Shower experiment is reported. The technique exploits cosmic ray proton primaries in the energy region E0 = (1.5 ÷ 2.5) 1015 eV, studying the absorption length of their cascades when detected at maximum development. Primary energies are selected through the EAS muon number (Nμ), and proton originated cascades at maximum development by means of the shower size (Ne). The shower longitudinal development and detection fluctuations are determined by means of simulations performed using the CORSIKA code and the QGSJET interaction model. The simulations provide the conversion factor (k=1.15±0.05) from the observed attenuation length (λobsexp =76.0±3.8 g/cm2) to the interaction length (λp-air=λintexp =66.1±4.4 g/cm2). The obtained value of the p-air inelastic cross section at √s ≈ 2 TeV is σp-airinel =365±24(stat)-28(sys) mb. The statistical and systematic uncertainties, as well as the connections with the pp total cross section measurements are discussed.

AB - The proton-air inelastic cross section measurement at √s ≈ 2 TeV from the EAS-TOP Extensive Air Shower experiment is reported. The technique exploits cosmic ray proton primaries in the energy region E0 = (1.5 ÷ 2.5) 1015 eV, studying the absorption length of their cascades when detected at maximum development. Primary energies are selected through the EAS muon number (Nμ), and proton originated cascades at maximum development by means of the shower size (Ne). The shower longitudinal development and detection fluctuations are determined by means of simulations performed using the CORSIKA code and the QGSJET interaction model. The simulations provide the conversion factor (k=1.15±0.05) from the observed attenuation length (λobsexp =76.0±3.8 g/cm2) to the interaction length (λp-air=λintexp =66.1±4.4 g/cm2). The obtained value of the p-air inelastic cross section at √s ≈ 2 TeV is σp-airinel =365±24(stat)-28(sys) mb. The statistical and systematic uncertainties, as well as the connections with the pp total cross section measurements are discussed.

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Y2 - 3 July 2007 through 11 July 2007

ER -

EAS-TOP: The proton-air inelastic cross-section at √s ≈ 2 TeV

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