Neutrino-nucleus cross sections for W-boson and trident production

Abstract

The physics of neutrino-nucleus cross sections is a critical probe of the Standard Model and beyond. A precise understanding is also needed to accurately deduce astrophysical neutrino spectra. At energies above $\sim 5$ GeV, the cross section is dominated by deep inelastic scattering, mediated by weak bosons. In addition, there are subdominant processes where the hadronic coupling is through virtual photons, ${\gamma }^{\ast }$: (on-shell) $W$-boson production (e.g., where the underlying interaction is ${\nu }_{\ell }+{\gamma }^{\ast }\to {\ell }^{-}+W^{+}$) and trident production (e.g., where it is $\nu +{\gamma }^{\ast }\to \nu +{\ell }_1^{-}+{\ell }_2^{+}$). These processes become increasingly relevant at TeV--PeV energies. We undertake the first systematic approach to these processes (and those with hadronic couplings through virtual $W$ and $Z$ bosons), treating them together, avoiding common approximations, considering all neutrino flavors and final states, and covering the energy range $10$--$10^8$ GeV. In particular, we present the first complete calculation of $W$-boson production and the first calculation of trident production at TeV--PeV energies. When we use the same assumptions as in prior work, we recover all of their major results. In a companion paper, we show that these processes should be taken into account for IceCube-Gen2.

Main text 14 pages and 13 figures; minor changes; results and conclusions unchanged; matches published version

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Cited by in corpus (2)

• W-boson and trident production in TeV--PeV neutrino observatories
• Complete Vector-like Fourth Family with ${\mathrm{U}(1)}^{\prime }$: A Global Analysis