Characterization of the background for a neutrino search with the HAWC observatory. (arXiv:2108.07767v2 [hep-ex] UPDATED)
<a href="http://arxiv.org/find/hep-ex/1/au:+Collaboration_HAWC/0/1/0/all/0/1">HAWC Collaboration</a>: <a href="http://arxiv.org/find/hep-ex/1/au:+Albert_A/0/1/0/all/0/1">A. Albert</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Alfaro_R/0/1/0/all/0/1">R. Alfaro</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Alvarez_C/0/1/0/all/0/1">C. Alvarez</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Camacho_J/0/1/0/all/0/1">J. R. Angeles Camacho</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Arteaga_Velazquez_J/0/1/0/all/0/1">J. C. Arteaga-Vel&#xe1;zquez</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Arunbabu_K/0/1/0/all/0/1">K. P. Arunbabu</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Belmont_Moreno_E/0/1/0/all/0/1">E. Belmont-Moreno</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Caballero_Mora_K/0/1/0/all/0/1">K. S. Caballero-Mora</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Capistran_T/0/1/0/all/0/1">T. Capistr&#xe1;n</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Carraminana_A/0/1/0/all/0/1">A. Carrami&#xf1;ana</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Casanova_S/0/1/0/all/0/1">S. Casanova</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Cotti_U/0/1/0/all/0/1">U. Cotti</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Cotzomi_J/0/1/0/all/0/1">J. Cotzomi</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Leon_S/0/1/0/all/0/1">S. Couti&#xf1;o de Le&#xf3;n</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Fuente_E/0/1/0/all/0/1">E. De la Fuente</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Hernandez_R/0/1/0/all/0/1">R. Diaz Hernandez</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+DuVernois_M/0/1/0/all/0/1">M. A. DuVernois</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Durocher_M/0/1/0/all/0/1">M. Durocher</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Espinoza_C/0/1/0/all/0/1">C. Espinoza</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Fan_K/0/1/0/all/0/1">K. L. Fan</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Fraija_N/0/1/0/all/0/1">N. Fraija</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Garcia_D/0/1/0/all/0/1">D. Garcia</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Garcia_Gonzalez_J/0/1/0/all/0/1">J. A. Garc&#xed;a-Gonz&#xe1;lez</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Garfias_F/0/1/0/all/0/1">F. Garfias</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Gonzalez_M/0/1/0/all/0/1">M. M. Gonz&#xe1;lez</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Goodman_J/0/1/0/all/0/1">J. A. Goodman</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Huang_D/0/1/0/all/0/1">D. Huang</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Hueyotl_Zahuantitla_F/0/1/0/all/0/1">F. Hueyotl-Zahuantitla</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Huntemeyer_P/0/1/0/all/0/1">P. H&#xfc;ntemeyer</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Iriarte_A/0/1/0/all/0/1">A. Iriarte</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Jardin_Blicq_A/0/1/0/all/0/1">A. Jardin-Blicq</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Kieda_D/0/1/0/all/0/1">D. Kieda</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Lara_A/0/1/0/all/0/1">A. Lara</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Lee_W/0/1/0/all/0/1">W. H. Lee</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Vargas_H/0/1/0/all/0/1">H. Le&#xf3;n Vargas</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Longinotti_A/0/1/0/all/0/1">A. L. Longinotti</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Luis_Raya_G/0/1/0/all/0/1">G. Luis-Raya</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Malone_K/0/1/0/all/0/1">K. Malone</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Martinez_Castro_J/0/1/0/all/0/1">J. Mart&#xed;nez-Castro</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Matthews_J/0/1/0/all/0/1">J. A. Matthews</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Miranda_Romagnoli_P/0/1/0/all/0/1">P. Miranda-Romagnoli</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Morales_Soto_J/0/1/0/all/0/1">J. A. Morales-Soto</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Moreno_E/0/1/0/all/0/1">E. Moreno</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Nayerhoda_A/0/1/0/all/0/1">A. Nayerhoda</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Nellen_L/0/1/0/all/0/1">L. Nellen</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Noriega_Papaqui_R/0/1/0/all/0/1">R. Noriega-Papaqui</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Omodei_N/0/1/0/all/0/1">N. Omodei</a>, <a href="http://arxiv.org/find/hep-ex/1/au:+Peisker_A/0/1/0/all/0/1">A. Peisker</a>, et al. (13 additional authors not shown)

The close location of the HAWC observatory to the largest volcano in Mexico
allows to perform a search for neutrino-induced horizontal muon and tau charged
leptons. The section of the volcano located at the horizon reaches values of
slant depth larger than 8 km of rock, making it an excellent shield for the
cosmic ray horizontal background. We report the search method and background
suppression technique developed for the detection of Earth-skimming neutrinos
with HAWC, as well as a model that describes the remaining background produced
by scattered muons. We show that by increasing the detection energy threshold
we could use HAWC to search for neutrino-induced charged leptons.

The close location of the HAWC observatory to the largest volcano in Mexico
allows to perform a search for neutrino-induced horizontal muon and tau charged
leptons. The section of the volcano located at the horizon reaches values of
slant depth larger than 8 km of rock, making it an excellent shield for the
cosmic ray horizontal background. We report the search method and background
suppression technique developed for the detection of Earth-skimming neutrinos
with HAWC, as well as a model that describes the remaining background produced
by scattered muons. We show that by increasing the detection energy threshold
we could use HAWC to search for neutrino-induced charged leptons.

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