Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf

H. Menjo; O. Adriani; M. Bongi; G. Castellini; R. Dalessandro; 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; Shoji Torii; A. Tricomi; W. C. Turner

doi:10.1016/j.nima.2011.12.071

Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf

H. Menjo^*, O. Adriani, M. Bongi, G. Castellini, R. Dalessandro, 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. RicciariniT. Sako, Y. Shimizu, K. Suzuki, T. Suzuki, K. Taki, T. Tamura, Shoji Torii, A. Tricomi, W. C. Turner

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

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 ^π0s at the very forward region (the pseudo-rapidity range of η>8.4), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at s=900GeV and s=7TeV proton-proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at s=7TeV proton-proton collisions and the pseudo-rapidity ranges of η>10.94 and 8.81<η<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.

Original language	English
Pages (from-to)	224-227
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume	692
DOIs	https://doi.org/10.1016/j.nima.2011.12.071
Publication status	Published - 2012 Nov 11

Keywords

Hadron interaction model
LHCf
UHECRs

ASJC Scopus subject areas

Instrumentation
Nuclear and High Energy Physics

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10.1016/j.nima.2011.12.071

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Menjo, H., Adriani, O., Bongi, M., Castellini, G., Dalessandro, R., Fukatsu, K., Haguenauer, M., Itow, Y., Kasahara, K., Kawade, K., MacIna, D., Mase, T., Masuda, K., Mitsuka, G., Muraki, Y., Nakai, M., Noda, K., Papini, P., Perrot, A. L., ... Turner, W. C. (2012). Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf. Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 692, 224-227. https://doi.org/10.1016/j.nima.2011.12.071

Menjo, H, Adriani, O, Bongi, M, Castellini, G, Dalessandro, R, Fukatsu, K, Haguenauer, M, Itow, Y, Kasahara, K, Kawade, K, MacIna, D, Mase, T, Masuda, K, Mitsuka, G, Muraki, Y, Nakai, M, Noda, K, Papini, P, Perrot, AL, Ricciarini, S, Sako, T, Shimizu, Y, Suzuki, K, Suzuki, T, Taki, K, Tamura, T, Torii, S, Tricomi, A & Turner, WC 2012, 'Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf', Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, vol. 692, pp. 224-227. https://doi.org/10.1016/j.nima.2011.12.071

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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 π0s at the very forward region (the pseudo-rapidity range of η>8.4), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at s=900GeV and s=7TeV proton-proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at s=7TeV proton-proton collisions and the pseudo-rapidity ranges of η>10.94 and 8.81<η<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.",

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AU - Menjo, H.

AU - Adriani, O.

AU - Bongi, M.

AU - Castellini, G.

AU - Dalessandro, R.

AU - Fukatsu, K.

AU - Haguenauer, M.

AU - Itow, Y.

AU - Kasahara, K.

AU - Kawade, K.

AU - MacIna, D.

AU - Mase, T.

AU - Masuda, K.

AU - Mitsuka, G.

AU - Muraki, Y.

AU - Nakai, M.

AU - Noda, K.

AU - Papini, P.

AU - Perrot, A. L.

AU - Ricciarini, S.

AU - Sako, T.

AU - Shimizu, Y.

AU - Suzuki, K.

AU - Suzuki, T.

AU - Taki, K.

AU - Tamura, T.

AU - Torii, Shoji

AU - Tricomi, A.

AU - Turner, W. C.

PY - 2012/11/11

Y1 - 2012/11/11

N2 - 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 π0s at the very forward region (the pseudo-rapidity range of η>8.4), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at s=900GeV and s=7TeV proton-proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at s=7TeV proton-proton collisions and the pseudo-rapidity ranges of η>10.94 and 8.81<η<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.

AB - 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 π0s at the very forward region (the pseudo-rapidity range of η>8.4), which should be critical data to calibrate hadron interaction models used in the air shower simulations. LHCf successfully operated at s=900GeV and s=7TeV proton-proton collisions in 2009 and 2010. We present the first physics result, single photon energy spectra at s=7TeV proton-proton collisions and the pseudo-rapidity ranges of η>10.94 and 8.81<η<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.

KW - Hadron interaction model

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KW - UHECRs

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Forward photon energy spectrum at LHC 7 TeV p-p collisions measured by LHCf

Abstract

Keywords

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