Cosmic ray spectrum of protons plus helium nuclei between 6 and 158 TeV from HAWC data

Albert, A.; Alfaro, R.; Álvarez, C.; Camacho, J.R.; Arteaga‐Velázquez, J. C.; Arunbabu, K. P.; Rojas, D. Avila; Solares, Hugo Alberto Ayala; Belmont‐Moreno, E.; Brisbois, C.; Caballero-Mora, K. S.; Capistrán, T.; Carramiñana, A.; Casanova, S.; Cotti, U.; Cotzomi, J.; Fuente, Eduardo de la; Hernández, R. Díaz; DuVernois, Michael; Durocher, Mora; Díaz–Vélez, Juan Carlos; Espinoza, C.; Fraija, N.; García-González, J. A.; Garfias, F.; González, M. M.; Goodman, J. A.; Harding, J. Patrick; Hona, B.; Huang, Dezhi; Hueyotl-Zahuantitla, Filiberto; Hüntemeyer, P.; Iriarte, A.; Joshi, Vikas; Kieda, D.; Kunde, G. J.; Lara, Alejandro; Lee, W. H.; Vargas, H. León; Linnemann, J.; Longinotti, A. L.; Luis-Raya, G.; Malone, K.; Martı́nez, O.; Martínez-Castro, J.; Matthews, John; Miranda-Romagnoli, P.; Morales-Soto, J. A.; Moreno, E.; Mostafá, M.; Nayerhoda, A.; Nellen, L.; Newbold, M.; Noriega‐Papaqui, R.; Omodei, N.; Pérez-Pérez, E. G.; Rho, Chang Dong; Rosa-González, D.; Salazar, H.; Greus, F. Salesa; Sandoval, A.; Serna-Franco, José; Smith, A. J.; Springer, R. W.; Tollefson, K.; Torres, I.; Torres-Escobedo, R.; Ureña-Mena, Fernando; Villaseñor, L.; Wang, X.; Willox, Elijah; Zhou, H.; León, C. De; Álvarez, José David Ruiz; Yodh, G.; Zepeda, A.

doi:10.1103/physrevd.105.063021

Cited by 19 publications

(21 citation statements)

References 92 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The p+He spectrum shows a novel hint regarding a possible direct detection of a second hardening around 150 TeV, also suggested by preliminary results from the HAWC collaboration [50] and foreseen in [51]. Summary -The p+He spectrum was measured from 46 GeV to 316 TeV, using 72 months of data from the [41], HAWC [42], KASCADE [43] and EAS-TOP+MACRO [44] (right). Statistical uncertainties (1σ) are represented by error bars, while the continuous bands represent the systematic uncertainties on the analysis (inner band) and the total systematic uncertainties (outer band).…”

Section: Protonmentioning

confidence: 76%

“…Figure 4. p+He spectrum measured with the DAMPE detector (red circles), between 46 GeV and 316 TeV, compared with: direct measurements of p+He made by ATIC-02 [15], NUCLEON [14] and CREAM [13] (left), and indirect measurements from ARGO-YBJ+WFCT[41], HAWC[42], KASCADE[43] and EAS-TOP+MACRO[44] (right). Statistical uncertainties (1σ) are represented by error bars, while the continuous bands represent the systematic uncertainties on the analysis (inner band) and the total systematic uncertainties (outer band).…”

mentioning

confidence: 99%

See 1 more Smart Citation

Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

Alemanno¹,

An²,

Azzarello³

et al. 2021

Phys. Rev. Lett.

110

View full text Add to dashboard Cite

Recent observations of the light component of the cosmic-ray spectrum have revealed unexpected features that motivate further and more precise measurements up to the highest energies. The Dark Matter Particle Explorer (DAMPE) is a satellite-based cosmic-ray experiment that is operational since December 2015, continuously collecting data on high-energy cosmic particles with very good statistics, energy resolution, and particle identification capabilities. In this work, the latest measurements of the energy spectrum of proton+helium in the energy range from 46 GeV to 316 TeV are presented. Among the most distinctive features of the spectrum, a spectral hardening at ∼600 GeV has been observed, along with a softening at ∼29 TeV measured with a 6.6σ significance. Moreover, by measuring the energy spectrum up to 316 TeV, a strong link is established between space-and ground-based experiments, also suggesting the presence of a second hardening at ∼150 TeV. * https://geant4.web.cern.ch/node/302 † https://web.ikp.kit.edu/rulrich/crmc.html

show abstract

Section: Protonmentioning

confidence: 76%

mentioning

confidence: 99%

Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

Alemanno¹,

An²,

Azzarello³

et al. 2021

Phys. Rev. Lett.

110

View full text Add to dashboard Cite

show abstract

“…The colors in the matrix represent the probability for an event in an incident energy bin to migrate to different deposited energy bins. [36], HAWC [37], KASCADE [38] and EAS-TOP+MACRO [39] (see also [21]). is presented in figure 3 in the energy range from 46 GeV to 316 TeV, compared to indirect p+He measurements.…”

Section: Pos(icrc2023)138mentioning

confidence: 99%

Measurement of the p+He energy spectrum with the DAMPE space mission

Alemanno¹,

Altomare²,

An³

et al. 2023

Proceedings of 38th International Cosmic Ray Conference — PoS(ICRC2023)

View full text Add to dashboard Cite

It is currently well established that proton and helium constitute the main component of cosmic radiation in the energy range from tens of GeV to hundreds of TeV. Their direct detection and separation have been carried out in the past years using several space-based instruments and long-flying balloons, while ground-based experiments provided results at high energies but with large systematics due to the limited mass resolution. Surprisingly, two structures were found in the direct measurements of individual proton and helium spectra which deviates from the single power law model, proposed by standard acceleration and propagation mechanisms. Moreover, results from ground-based experiments opened the scenario of a light component (i.e. p+He) knee in the cosmic ray spectrum, even with large uncertainties. The p+He direct measurement, using looser selection cuts compared to individual p and He analyses, besides giving a valuable cross-check, can enlarge the event statistics and then extend the energy range to larger values, covering an overlap region between direct and indirect measurements, and exploring it for the first time with high precision. Among the space-based cosmic ray detectors in operation at present, the DArk Matter Particle Explorer (DAMPE) has the capability of providing results on p+He up to the highest energies, thanks to its large acceptance and deep calorimeter. In this work, the p+He spectrum measured up to 300 TeV, using 6 years of data collected with the DAMPE satellite, will be presented.

show abstract

“…However, at higher energies, they suffer from limited statistics due to the steeply falling flux of the PCRs. These are studied with the help of large effective area ground-based detector arrays [10][11][12][13][14][15][16][17]. Different kinds of detectors are employed in these arrays to measure electrons, muons, hadrons, and Cherenkov or fluorescence photons in the EAS.…”

Section: Introductionmentioning

confidence: 99%

A GEANT4 based simulation framework for the large area muon telescope of the GRAPES-3 experiment

et al. 2023

View full text Add to dashboard Cite

The GRAPES-3 experiment located in Ooty, India, samples the electron and muon components in extensive air showers using an array of plastic scintillator detectors and a muon telescope (G3MT) consisting of proportional counters to study the composition of primary cosmic rays (PCRs) as well as γ-ray sources in the TeV–PeV energy range. The G3MT is designed with an appropriate mass absorber to shield the electromagnetic and hadronic components in the shower and to detect muons above 1 GeV×sec(θ) energy, incident from a zenith angle θ. We developed a simulation framework based on the GEANT4 toolkit to evaluate the response of shower particles such as muons, γ-rays, electrons and hadrons in the G3MT. We discuss the geometric modeling of the G3MT using GEANT4 starting with the proportional counter. We estimated the punch-through contribution of hadrons in the G3MT. We compare the simulated muon multiplicity distributions with the observed ones assuming PCR composition from a four population supernova remnant acceleration model namely H4a.

show abstract

Cosmic ray spectrum of protons plus helium nuclei between 6 and 158 TeV from HAWC data

Cited by 19 publications

References 92 publications

Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

Measurement of the Cosmic Ray Helium Energy Spectrum from 70 GeV to 80 TeV with the DAMPE Space Mission

Measurement of the p+He energy spectrum with the DAMPE space mission

A GEANT4 based simulation framework for the large area muon telescope of the GRAPES-3 experiment

Contact Info

Product

Resources

About