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SUMMARY:Analytical description of atmospheric muon spectra at large zenith
  angles
DTSTART;VALUE=DATE-TIME:20261027T162500Z
DTEND;VALUE=DATE-TIME:20261027T163000Z
DTSTAMP;VALUE=DATE-TIME:20261021T081816Z
UID:indico-contribution-6501@cern.ch
DESCRIPTION:Speakers: Khristina Kotseva (Sirius University of Science and 
 Technology\, National Research Nuclear University MEPhI)\nAtmospheric muon
  spectra are used in a range of cosmic-ray studies\, including investigati
 ons of extensive air showers\, atmospheric particle production\, and atmos
 pheric neutrino fluxes\, as well as for validating particle-transport and 
 cascade models. In particular\, the spectrum is critical for estimating ma
 tter distribution in muography. For practical applications\, compact analy
 tical parameterizations are preferable to computationally demanding Monte 
 Carlo simulations\, for example\, when optimizing detector configurations 
 or estimating exposure times. However\, the accuracy of commonly used para
 meterizations at large zenith angles remains an important issue.\nWe teste
 d four analytical parameterizations of the differential atmospheric muon e
 nergy spectrum - Tang\, Shukla\, Reyna\, and Bogdanova - against an indepe
 ndent experimental database from nine experiments\, covering zenith angles
  from 0° to 90°. None of the considered parameterizations with published
  parameters provides satisfactory agreement with the experimental data ove
 r the full zenith-angle range. By fitting each zenith interval we obtained
  the systematic angular dependence of the model parameters. This indicates
  that the existing functional forms do not completely capture the angular 
 dependence of the muon spectrum. \nThese results motivate further developm
 ent of functional forms or parameterizations with angle-dependent paramete
 rs\, which could improve the accuracy of atmospheric muon flux for applica
 tions. Additional experimental measurements\, especially at large zenith a
 ngles could also help improve the description of these dependences.\n\nhtt
 ps://indico.particle.mephi.ru/event/626/contributions/6501/
LOCATION:Sevastopol hotel Conference Hall 1
URL:https://indico.particle.mephi.ru/event/626/contributions/6501/
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