Gamma/hadron separation with the HAWC observatory


Por: Alfaro, R., Alvarez, C., Alvarez, J. D., Angeles Camacho, J. R., Arteaga-Velazquez, J. C., Avila Rojas, D., Ayala Solares H.A., Babu, R., Belmont-Moreno, E., Brisbois, C., Caballero-Mora, K. S., Capistran, T., Carramiñana A., Casanova, S., Chaparro-Amaro, O., Cotti, U., Cotzomi, J., de León S.C., De la Fuente, E., de Leon, C., Diaz Hernandez, R., Dingus, B. L., DuVernois, M. A., Durocher, M., Diaz-Velez, J. C., Ellsworth, R. W., Engel, K., Espinoza, C., Fan, K. L., Fernández Alonso M., Fraija, N., Garcia, D., Garcia-Gonzalez, J. A., Garfias, F., Gonzalez, M. M., Goodman, J. A., Harding, J. P., Hernandez, S., Hona, B., Huang, D., Hueyotl-Zahuantitla, F., Huntemeyer, P., Iriarte, A., Jardin-Blicq, A., Joshi, V, Kaufmann, S., Kunde, G. J., Lara, A., Lee, W. H., Lee, J., Leon Vargas, H., Linnemann, J. T., Luis-Raya, G., Lundeen, J., Malone, K., Marandon, V, Martinez, O., Martinez-Castro, J., Matthews, J. A., Miranda-Romagnoli, P., Morales-Soto, J. A., Nayerhoda, A., Nellen, L., Nisa, M. U., Noriega-Papaqui, R., Olivera-Nieto, L., Omodei, N., Peisker, A., Perez Araujo, Y., Perez-Perez, E. G., Rho, C. D., Rosa-Gonzalez, D., Ruiz-Velasco, E., Salazar, H., Salesa Greus, F., Sandoval, A., Saz Parkinson P.M., Serna-Franco, J., Smith, A. J., Springer, R. W., Tibolla, O., Tollefson, K., Torres, I, Torres-Escobedo, R., Turner, R., Ureña-Mena F., Villaseñor L., Wang, X., Watson, I. J., Werner, F., Willox, E., Wood, J., Zepeda, A., Zhou, H.

Publicada: 1 ene 2022
Resumen:
The High Altitude Water Cherenkov (HAWC) gamma-ray observatory observes atmospheric showers produced by incident gamma rays and cosmic rays with energy from 300 GeV to more than 100 TeV. A crucial phase in analyzing gamma-ray sources using ground-based gamma-ray detectors like HAWC is to identify the showers produced by gamma rays or hadrons. The HAWC observatory records roughly 25,000 events per second, with hadrons representing the vast majority (>99.9%) of these events. The standard gamma/hadron separation technique in HAWC uses a simple rectangular cut involving only two parameters. This work describes the implementation of more sophisticated gamma/hadron separation techniques, via machine learning methods (boosted decision trees and neural networks), and summarizes the resulting improvements in gamma/hadron separation obtained in HAWC. © 2022

Filiaciones:
Alfaro, R.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Alvarez, C.:
 Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico

Alvarez, J. D.:
 Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico

Angeles Camacho, J. R.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Arteaga-Velazquez, J. C.:
 Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico

Avila Rojas, D.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Ayala Solares H.A.:
 Department of Physics, Pennsylvania State University, University ParkPA, United States

Babu, R.:
 Department of Physics, Michigan Technological University, Houghton, MI, United States

Belmont-Moreno, E.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Brisbois, C.:
 Department of Physics, University of Maryland, College ParkMD, United States

Caballero-Mora, K. S.:
 Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico

Capistran, T.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Carramiñana A.:
 Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico

Casanova, S.:
 Institute of Nuclear Physics Polish Academy of Sciences, Krakow, PL-31342 IFJ-PAN, Poland

Chaparro-Amaro, O.:
 Centro de Investigación en Computación, Instituto Politécnico Nacional, México City, Mexico

Cotti, U.:
 Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico

Cotzomi, J.:
 Facultad de Ciencias Fisico Matemáticas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico

de León S.C.:
 Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico

De la Fuente, E.:
 Departamento de Fisica, Centro Universitario de Ciencias Exactase Ingenierias, Universidad de Guadalajara, Guadalajara, Mexico

de Leon, C.:
 Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico

Diaz Hernandez, R.:
 Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico

Dingus, B. L.:
 Physics Division, Los Alamos National Laboratory, Los Alamos, NM, United States

DuVernois, M. A.:
 Department of Physics, University of Wisconsin-Madison, Madison, WI, United States

Durocher, M.:
 Physics Division, Los Alamos National Laboratory, Los Alamos, NM, United States

Diaz-Velez, J. C.:
 Departamento de Fisica, Centro Universitario de Ciencias Exactase Ingenierias, Universidad de Guadalajara, Guadalajara, Mexico

Ellsworth, R. W.:
 Department of Physics, University of Maryland, College ParkMD, United States

Engel, K.:
 Department of Physics, University of Maryland, College ParkMD, United States

Espinoza, C.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Fan, K. L.:
 Department of Physics, University of Maryland, College ParkMD, United States

Fernández Alonso M.:
 Department of Physics, Pennsylvania State University, University ParkPA, United States

Fraija, N.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Garcia, D.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Garcia-Gonzalez, J. A.:
 Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, Monterrey, N.L.64849, Mexico

Garfias, F.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Gonzalez, M. M.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Goodman, J. A.:
 Department of Physics, University of Maryland, College ParkMD, United States

Harding, J. P.:
 Physics Division, Los Alamos National Laboratory, Los Alamos, NM, United States

Hernandez, S.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Hona, B.:
 Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, United States

Huang, D.:
 Department of Physics, Michigan Technological University, Houghton, MI, United States

Hueyotl-Zahuantitla, F.:
 Universidad Autónoma de Chiapas, Tuxtla Gutiérrez, Chiapas, Mexico

Huntemeyer, P.:
 Department of Physics, Michigan Technological University, Houghton, MI, United States

Iriarte, A.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Jardin-Blicq, A.:
 Max–Planck Institute for Nuclear Physics, Heidelberg, 69117, Germany

 Department of Physics, Faculty of Science, Chulalongkorn University, 254 Phayathai Road, Pathumwan, Bangkok 10330, Thailand

 National Astronomical Research Institute of Thailand (Public Organization), Don Kaeo, MaeRim, Chiang Mai, 50180, Thailand

Joshi, V:
 Erlangen Centre for Astroparticle Physics, Friedrich-Alexander-Universität Erlangen-Nürnberg, Erlangen, Germany

Kaufmann, S.:
 Universidad Politécnica de Pachuca, Hgo, Pachuca, Mexico

Kunde, G. J.:
 Physics Division, Los Alamos National Laboratory, Los Alamos, NM, United States

Lara, A.:
 Instituto de Geofisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Lee, W. H.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Lee, J.:
 University of Seoul, Seoul, South Korea

Leon Vargas, H.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Linnemann, J. T.:
 Department of Physics and Astronomy, Michigan State University, East Lansing, MI, United States

Luis-Raya, G.:
 Universidad Politécnica de Pachuca, Hgo, Pachuca, Mexico

Lundeen, J.:
 Department of Physics and Astronomy, Michigan State University, East Lansing, MI, United States

Malone, K.:
 Physics Division, Los Alamos National Laboratory, Los Alamos, NM, United States

Marandon, V:
 Max–Planck Institute for Nuclear Physics, Heidelberg, 69117, Germany

Martinez, O.:
 Facultad de Ciencias Fisico Matemáticas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico

Martinez-Castro, J.:
 Centro de Investigación en Computación, Instituto Politécnico Nacional, México City, Mexico

Matthews, J. A.:
 Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM, United States

Miranda-Romagnoli, P.:
 Universidad Autónoma Del Estado de Hidalgo, Pachuca, Mexico

Morales-Soto, J. A.:
 Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Mexico

Nayerhoda, A.:
 Institute of Nuclear Physics Polish Academy of Sciences, Krakow, PL-31342 IFJ-PAN, Poland

Nellen, L.:
 Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de Mexico, Ciudad de Mexico, Mexico

Nisa, M. U.:
 Department of Physics and Astronomy, Michigan State University, East Lansing, MI, United States

Noriega-Papaqui, R.:
 Universidad Autónoma Del Estado de Hidalgo, Pachuca, Mexico

Olivera-Nieto, L.:
 Max–Planck Institute for Nuclear Physics, Heidelberg, 69117, Germany

Omodei, N.:
 Department of Physics, Stanford University, Stanford, CA 94305–4060, United States

Peisker, A.:
 Department of Physics and Astronomy, Michigan State University, East Lansing, MI, United States

Perez Araujo, Y.:
 Instituto de Astronomia, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Perez-Perez, E. G.:
 Universidad Politécnica de Pachuca, Hgo, Pachuca, Mexico

Rho, C. D.:
 University of Seoul, Seoul, South Korea

Rosa-Gonzalez, D.:
 Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico

Ruiz-Velasco, E.:
 Max–Planck Institute for Nuclear Physics, Heidelberg, 69117, Germany

Salazar, H.:
 Facultad de Ciencias Fisico Matemáticas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico

Salesa Greus, F.:
 Institute of Nuclear Physics Polish Academy of Sciences, Krakow, PL-31342 IFJ-PAN, Poland

 Instituto de Física Corpuscular, CSIC, Universitat de València, Valencia, Paterna, E-46980, Spain

Sandoval, A.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Saz Parkinson P.M.:
 Santa Cruz Institute for Particle Physics, Department of Physics, University of California at Santa Cruz, Santa Cruz, CA 95064, United States

 Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong

 Laboratory for Space Research, The University of Hong Kong, Hong Kong

Serna-Franco, J.:
 Instituto de Fisica, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico

Smith, A. J.:
 Department of Physics, University of Maryland, College ParkMD, United States

Springer, R. W.:
 Department of Physics and Astronomy, University of Utah, Salt Lake City, UT, United States

Tibolla, O.:
 Universidad Politécnica de Pachuca, Hgo, Pachuca, Mexico

Tollefson, K.:
 Department of Physics and Astronomy, Michigan State University, East Lansing, MI, United States

Torres, I:
 Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico

Torres-Escobedo, R.:
 Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China

Turner, R.:
 Department of Physics, Michigan Technological University, Houghton, MI, United States

Ureña-Mena F.:
 Instituto Nacional de Astrofísica, Óptica y Electrónica, Puebla, Mexico

Villaseñor L.:
 Facultad de Ciencias Fisico Matemáticas, Benemérita Universidad Autónoma de Puebla, Puebla, Mexico

Wang, X.:
 Department of Physics, Michigan Technological University, Houghton, MI, United States

Watson, I. J.:
 University of Seoul, Seoul, South Korea

Werner, F.:
 Max–Planck Institute for Nuclear Physics, Heidelberg, 69117, Germany

Willox, E.:
 Department of Physics, University of Maryland, College ParkMD, United States

Wood, J.:
 NASA Marshall Space Flight Center, Astrophysics Office, Huntsville, AL 35812, United States

Zepeda, A.:
 Departamento de Física, Centro de Investigación y de Estudios Avanzados del IPN, Ciudad de México, Mexico

Zhou, H.:
 Tsung-Dao Lee Institute, Shanghai Jiao Tong University, Shanghai, China
ISSN: 01689002
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ELSEVIER SCIENCE BV, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS, Países Bajos
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