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SUMMARY:HECAP Seminar by Satyanarayan Mukhopadhyay - Prospects of Measurin
 g the Atmospheric Muon Neutrino and Antineutrino Flux Ratio with the ATLAS
  Detector
DTSTART;VALUE=DATE-TIME:20260922T140000Z
DTEND;VALUE=DATE-TIME:20260922T150000Z
DTSTAMP;VALUE=DATE-TIME:20260929T111349Z
UID:indico-event-11518@ictp.it
DESCRIPTION:\n	!!!New venue - L. Stasi Seminar Room!!!\n	 \nAbstract\n\n	
 There is a significant uncertainty in the prediction of atmospheric muon n
 eutrino and antineutrino flux ratio using different flux models\, especial
 ly at higher energies. We study the prospects of experimentally measuring 
 this flux ratio as a function of energy with the ATLAS detector at the LHC
 . To this end\, we compute the contained-vertex and external upward going 
 charged current event rates induced by atmospheric muon (anti)neutrinos th
 rough deep inelastic scattering at the 4 kiloton hadron calorimeter (HCAL)
  component of ATLAS. We illustrate the event selection criteria necessary 
 to eliminate the cosmic ray muon background for the above event classes. W
 hile the contained vertex events have a striking topology with a muon bein
 g created inside the HCAL and then traveling to the muon chamber possibly 
 through the tracker\, for muons with energy larger than 3 GeV\, nearly 10 
 times more events are obtained for the external upward going muons created
  in the rock column below the detector. Our estimates show that the energy
  dependence of the ratio of negative and positively charged muons induced 
 by atmospheric muon neutrino and antineutrino fluxes can be measured by AT
 LAS up to a muon energy of 100 GeV\, with 1000-live days of neutrino physi
 cs exposure over a period of several years\, considering only the period w
 ith the LHC beams not in circulation\, but the detector and magnetic field
 s of ATLAS in operation.\n	 \n\n	Link to Zoom registrationhttps://zoom.us
 /meeting/register/dwPC9zMkROaZGvDstWIbrA\n	 \n\n//indico.ictp.it/event/11
 518/
LOCATION:Hybrid Leonardo Building - L. Stasi Seminar Room and via Zoom
URL://indico.ictp.it/event/11518/
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