Constraints on the flux of primary cosmic-ray photons at energies<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>E</mml:mi><mml:mo>&gt;</mml:mo><mml:msup><mml:mn>10</mml:mn><mml:mn>18</mml:mn></mml:msup><mml:mtext> </mml:mtext><mml:mtext> </mml:mtext><mml:mi>eV</mml:mi></mml:math>from Yakutsk muon data

Глушков, А. В.; Makarov, I. T.; Правдин, М. И.; Sleptsov, I. E.; Gorbunov, D.; Рубцов, Г.; Troitsky, S.

doi:10.1103/physrevd.82.041101

Cited by 54 publications

(45 citation statements)

References 37 publications

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“…The average X max of showers produced by photons at the energies of interest is about 50 g/cm 2 deeper in the atmosphere than that of protons. However, observational limits on the fraction of photons are < 0.5 % [16,17]. With simulations we find that the possible under-estimation of the cross-section if photons were present in the data sample at this level is less than 10 mb.…”

Section: Determination Of the Cross-sectionmentioning

confidence: 98%

Measurement of the Proton-Air Cross Section ats=57 TeVwith the Pierre Auger Observatory

Abreu¹,

Aglietta²,

Ahn³

et al. 2012

Phys. Rev. Lett.

246

128

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We report a measurement of the proton-air cross-section for particle production at the center-ofmass energy per nucleon of 57 TeV. This is derived from the distribution of the depths of shower maxima observed with the Pierre Auger Observatory: systematic uncertainties are studied in detail. Analysing the tail of the distribution of the shower maxima, a proton-air cross-section of 505 ± 22(stat) +28 −36 (sys) mb is found.

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Section: Determination Of the Cross-sectionmentioning

confidence: 98%

Measurement of the Proton-Air Cross Section ats=57 TeVwith the Pierre Auger Observatory

Abreu¹,

Aglietta²,

Ahn³

et al. 2012

Phys. Rev. Lett.

246

128

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“…The average X max of showers produced by photons at the energies of interest is more than 100 g/cm 2 deeper in the atmosphere than that of protons. However, observational limits on the fraction of photons are <0.5% [6,20]. With simulations we find that the possible under-estimation of the cross-section -if photons were present in the data sample at this level -is less than 10 mb.…”

Section: Epj Web Of Conferencesmentioning

confidence: 99%

Measurement of the proton-air cross-section with the Pierre Auger Observatory

Ulrich

2013

EPJ Web of Conferences

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Abstract. We present the procedure to measure the proton-air cross-section at a center-of-mass energy per nucleon of 57 TeV developed by the Pierre Auger Collaboration. The conversion from proton-air to inelastic proton-proton cross-section with an extended Glauber calculation is discussed. The systematic uncertainties of the analysis are summarized and the final result compared to accelerator data and model predictions.

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“…A similar analysis with the full IceCube detector is in preparation. [50] and SD [7] detectors and TA SD detector [49], compared to the results of AGASA [51] and Yakutsk [52]. The shaded regions give the predictions for the GZK photon flux models from [56] assuming protons at the source (red shaded), from [58] (red and blue, under the assumption of proton and iron acceleration), and for the case of a single source as Centaurus A [59] (green).…”

Section: (Left)mentioning

confidence: 99%

“…No primary photons have been unambiguously identified so far above the EeV energies and upper limits have been placed on the diffuse photon fraction and integral photon flux by several experiments [7,[47][48][49][50][51][52][53]. Above 10 19 eV, both Auger and TA have performed a search for photon-induced showers using the respective surface detectors.…”

Section: Photon Searchesmentioning

confidence: 99%

Report from the Multi-Messenger Working Group at UHECR-2014 Conference

Karg¹,

Álvarez-Muñiz

Kuempel

et al. 2016

Proceedings of International Symposium for Ultra-High Energy Cosmic Rays (UHECR2014)

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The IceCube, Pierre Auger and Telescope Array Collaborations have recently reported results on neutral particles (neutrons, photons and neutrinos) which complement the measurements on charged primary cosmic rays at ultra-high energy. The complementarity between these messengers and between their detections are outlined. The current status of their search is reviewed and a cross-correlation analysis between the available results is performed. The expectations for photon and neutrino detections in the near future are also presented.

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Constraints on the flux of primary cosmic-ray photons at energiesE>1018 eVfrom Yakutsk muon data

Cited by 54 publications

References 37 publications

Measurement of the Proton-Air Cross Section ats=57 TeVwith the Pierre Auger Observatory

Measurement of the Proton-Air Cross Section ats=57 TeVwith the Pierre Auger Observatory

Measurement of the proton-air cross-section with the Pierre Auger Observatory

Report from the Multi-Messenger Working Group at UHECR-2014 Conference

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