Discovering neutrino tridents at the Large Hadron Collider

Journal Article · 28 October 2024 · Physical Review. D.

DOI: https://doi.org/10.1103/PhysRevD.110.072018 · OSTI ID:2475246

Altmannshofer, Wolfgang ; Mäkelä, Toni ; Sarkar, Subir ; Trojanowski, Sebastian ; Xie, Keping ; Zhou, Bei

Neutrino trident production of dilepton pairs is well recognized as a sensitive probe of both electroweak physics and physics beyond the Standard Model. Although a rare process, it could be significantly boosted by such new physics, and it also allows the electroweak theory to be tested in a new regime. We demonstrate that the forward neutrino physics program at the Large Hadron Collider offers a promising opportunity to measure for the first time, dimuon neutrino tridents with a statistical significance exceeding $5\sigma$ , improving on the previous claims at the $\sim 3\sigma$ level by the CHARM-II and CCFR collaborations while accounting for additional backgrounds later identified by the NuTeV collaboration. We present predictions for various proposed experiments and outline a specific experimental strategy to identify the signal and mitigate backgrounds, based on “reverse tracking” dimuon pairs in the $\mathrm{FASER}\nu 2$ detector. We also discuss prospects for constraining beyond Standard Model contributions to neutrino trident rates at high energies. Published by the American Physical Society 2024

• Research Organization: Chicago U., KICP; Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Michigan State U.; NCBJ, Warsaw; Oxford U., Theor. Phys.; UC, Santa Cruz
• Sponsoring Organization: US Department of Energy; USDOE
• Grant/Contract Number: 89243024CSC000002; AC02-07CH11359; SC0010107
• OSTI ID: 2475246
• Report Number(s): FERMILAB-PUB-24-0294-T; MSUHEP-24-007; 072018
• Journal Information: Physical Review. D., Journal Name: Physical Review. D. Journal Issue: 7 Vol. 110; ISSN PRVDAQ; ISSN 2470-0010
• Publisher: American Physical SocietyCopyright Statement
• Country of Publication: United States
• Language: English