SciPost Submission Page
Measuring three-flavor neutrinos with FASERnu at the LHC
by Tomoko Ariga
This is not the latest submitted version.
Submission summary
| Authors (as registered SciPost users): | Tomoko Ariga |
| Submission information | |
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| Preprint Link: | scipost_202111_00052v1 (pdf) |
| Date submitted: | Nov. 24, 2021, 1:16 a.m. |
| Submitted by: | Tomoko Ariga |
| Submitted to: | SciPost Physics Proceedings |
| Proceedings issue: | 16th International Workshop on Tau Lepton Physics (TAU2021) |
| Ontological classification | |
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| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
FASER$\nu$ at the Large Hadron Collider (LHC) is designed to directly detect neutrinos from a collider for the first time and study their cross sections at TeV energies. To date, no such measurements have been made. In 2018, a pilot detector was installed and collected proton-proton collision data of 12.2 fb$^{-1}$ at a center-of-mass energy of 13 TeV. We observed the first neutrino interaction candidates at the LHC, opening a new avenue for studying neutrinos from current and future high-energy colliders. During Run 3 of the LHC from 2022, we will deploy a neutrino detector with a target mass of 1.1 tons. We expect to collect $\sim$2,000 $\nu_e$, 7,000 $\nu_{\mu}$, and 50 $\nu_{\tau}$ interactions in the detector.
Current status:
Reports on this Submission
Strengths
2 - First neutrino events at pilot-detector
3 - Implications for the future
Report
Requested changes
1 - "Figure 1 shows the existing constraints...". There are additional measurements with IceCube using all-flavor data. Suggest removing "the existing" and giving references to those cross section measurements (https://doi.org/10.1103/PhysRevD.104.022001, https://doi.org/10.1103/PhysRevLett.122.041101).
2 - In the last paragraph of Sec. 1 it is stated that nue mainly originate from charm decays. This is energy dependent I think, as lighter mesons dominate at lower energies. I suppose it's true for FASERnu. It might be helpful to have a breakdown of the fluxes included as a figure or in the text.
3 - Fig. 1 right panel has SK extending to higher energies than IC-DeepCore. Could these numbers be double checked? In looking at the paper SK expectations drops below 1 at around 40 GeV, where as in IC there seems to be data at that energy still.
- Sec. 3 could use a bit more detail on the pilot-detector setup.
5 - Sec. 4 "detector is consisted" --> "detector consists"
6 - Sec. 4 "will be installed in the tunnel in November 2021." The proceeding is dated Nov. 24 2021 so I think the tense should be changed?