John Spencer's Final Exam: Tracker and Emulsion performance of FASER(nu)

Friday 20 Aug 2021, 15:00 → 16:50 US/Pacific

In collider experiments, very light particles are produced in the far-forward direction with small angle relative to the beam axis. The ForwArd Search ExpeRiment (FASER) is aptly located 480 m downstream from the ATLAS interaction point where background is minimal. The FASER$\nu$ emulsion detector, positioned just upstream of FASER, will detect collider-produced neutrinos for the very first time.

The FASER$\nu$ pilot detector was installed in the TI18 maintenance tunnel in 2018 and collected $12.2\,\mathrm{fb}^{-1}$ of data, mainly from muons originating at the ATLAS IP. These muons initiate knock-on electron EM showers. By clustering these showewrs and reconstructing their energies, the muon energy spectrum can be validated, as well as the procedure for reconstructing $\nu_e$ energy in FASER$\nu$.

The average cross sections of neutrinos will be measured in the unexplored energy region 350 GeV - 6 TeV. In addition, the interface detector enables track matching between the FASER spectrometer and the FASER$nu$ emulsion detector, which enables separate cross section measurements for mu neutrinos and antineutrinos. For electron neutrinos, the outgoing electron will initiate an electromagnetic shower, whose profile characteristics will be used to reconstruct the electron's energy. The performance of the FASER tracker is presented.

https://phys.washington.edu/events/2021-08-20/faser-tracker-performance-and-electron-energy-resolution-faserv-pilot-detector

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1 FASER tracker performance and electron energy resolution in the FASERv pilot detector

Speaker: John William Spencer (University of Washington (US))

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2 Close session

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