Preprint

PUBDB-2023-06343

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Neutrino Electromagnetic Properties and the Weak Mixing Angleat the LHC Forward Physics Facility

Mammen Abraham, R. (Corresponding author) ; Foroughi-Abari, S. ; Kling, F.DESY* ; Tsai, Y.-D.

2023

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Please use a persistent id in citations: doi:10.3204/PUBDB-2023-06343

Report No.: DESY-22-196; LA-UR-24-33427; UCI-HEP-TR-2022-06; arXiv:2301.10254

Abstract: The LHC produces an intense beam of highly energetic neutrinos of all three flavors in the forward direction, and the Forward Physics Facility (FPF) has been proposed to house a suite of experiments taking advantage of this opportunity. In this study, we investigate the FPF's potential to probe the neutrino electromagnetic properties, including neutrino millicharge, magnetic moment, and charge radius. We find that, due to the large flux of tau neutrinos at the LHC, the FPF detectors will be able to provide more sensitive constraints on the tau neutrino magnetic moment and millicharge than previous measurements at DONUT, by searching for excess in low recoil energy electron scattering events. We also find that, by precisely measuring the rate of neutral current deep inelastic scattering events, the FPF detectors have the potential to obtain the strongest experimental bounds on the neutrino charge radius for the electron neutrino, and one of the leading bounds for the muon neutrino flavor. The same signature could also be used to measure the weak mixing angle, and we estimate that $\sin^2 θ_W$ could be measured to about $3\%$ precision at a scale $Q \sim 10$ GeV, shedding new light on the longstanding NuTeV anomaly.

Keyword(s): flavor: 3 ; tau: flux ; neutrino: flavor ; neutrino: charge radius ; deep inelastic scattering: neutral current ; recoil: energy ; neutrino: magnetic moment ; electron: scattering ; electron: energy ; interpretation of experiments: CERN LHC Coll ; Weinberg angle ; electromagnetic ; muon: magnetic moment ; numerical calculations ; NuTeV ; sensitivity ; signature ; anomaly

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Contributing Institute(s):

1. Theorie-Gruppe (T)

Research Program(s):

1. 611 - Fundamental Particles and Forces (POF4-611) (POF4-611)
2. DFG project G:(GEPRIS)390833306 - EXC 2121: Quantum Universe (390833306) (390833306)

Experiment(s):

1. No specific instrument

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Database coverage:
; ; Published

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Linked articles:

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Journal Article Mammen Abraham, R. (Corresponding author) ; Foroughi-Abari, S. ; Kling, F.DESY* ; Tsai, Y.-D.
Neutrino Electromagnetic Properties and the Weak Mixing Angleat the LHC Forward Physics Facility
Physical review / D 111(1), 015029 (2025) [10.1103/PhysRevD.111.015029]2025     Files  Fulltext by arXiv.org BibTeX | EndNote: XML, Text | RIS

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