Precise predictions for multi-TeV and PeV energy neutrino scattering rates

Gauld, R.

doi:10.1103/physrevd.100.091301

Cited by 31 publications

(32 citation statements)

References 63 publications

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“…In trident production ( Fig. 2), the neutrino interacts with a virtual photon from the nucleus to produce a neutrino, a charged lepton, and a charged lepton of opposite sign [11,[55][56][57][58][59]. The cross section for this process has never been calculated at TeV-PeV energies.…”

Section: Introductionmentioning

confidence: 99%

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

Zhou

Beacom

2020

Phys. Rev. D

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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 ∼ 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, γ * : (on-shell) W -boson production (e.g., where the underlying interaction is ν +γ * → − +W + ) and trident production (e.g., where it is ν +γ * → ν + − 1 + + 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 [1], we show that these processes should be taken into account for IceCube-Gen2.

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Section: Introductionmentioning

confidence: 99%

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

Zhou

Beacom

2020

Phys. Rev. D

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“…Note that we have only generated the signal sample at leading order (LO). Both NLO (next-to-leading order) QCD and NLO QED corrections [66,67] relying on the photon PDF can be significant, but they contribute with opposite signs and comparable magnitudes, leading to a milder than expected net correction to the LO crosssection [68].…”

Section: A Numerical Setupmentioning

confidence: 99%

Lepton PDFs and Multipurpose Single Lepton Searches at the LHC

Dreiner¹,

Lozano²,

Nangia³

et al. 2021

Preprint

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A final state consisting of one charged lepton, at least one jet, and little missing transverse energy can be a very promising signature of new physics at the LHC across a wide range of models. However, it has received only limited attention so far. In this work we discuss the potential sensitivity of this channel to various new physics scenarios. To demonstrate our point, we consider its application to lepton parton distribution functions (PDFs) at the LHC in the context of supersymmetry. These lepton PDFs can lead to resonant squark production (similar to leptoquarks) via lepton number violating couplings present in R-parity Violating Supersymmetry (RPV-SUSY). Unlike leptoquarks, in RPV-SUSY there are many possible decay modes leading to a wide range of signatures. We propose two generic search regions: (a) A single first or second generation charged lepton, exactly 1 jet and low missing transverse energy, and (b) A single first or second generation charged lepton, at least 3 jets, and low missing transverse energy. We demonstrate that together these cover a large range of RPV-SUSY signatures, and have the potential to perform better than existing lowenergy bounds, while being general enough to extend to a wide range of possible models hitherto not explored at the LHC.

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“…The absence of a significant hadronic shower means that most of the neutrino energy is transferred to the muon and escapes the detector. There is room in these data for nuclear effects and efforts have been made to refine the calculations of neutrino scattering rates [63,64].…”

Section: Fig 9 Topmentioning

confidence: 99%

Nuclear effects in high-energy neutrino interactions

2020

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Neutrino telescopes like IceCube, KM3NeT, and Baikal-GVD offer physicists the opportunity to study neutrinos with energies far beyond the reach of terrestrial accelerators. These neutrinos are used to study high-energy neutrino interactions and to probe the Earth through absorption tomography. Current studies of TeV neutrinos use cross sections which are calculated for free nucleons with targets which are assumed to contain equal numbers of protons and neutrons. Here we consider modifications of high-energy neutrino interactions due to two nuclear effects: modifications of the parton densities in the nucleus, referred to here as shadowing, and the effect of nonisoscalar targets, with unequal numbers of neutrons and protons. Both of these effects depend on the interaction medium. Because shadowing is larger for heavier nuclei, such as iron, found in the Earth's core, it introduces a zenith-angle dependent change in the absorption cross section. These modifications increase the cross sections by 1-2% at energies below 100 TeV (antishadowing) and reduce it by 3-4% at higher energies (shadowing). Nuclear effects also alter the inelasticity distribution of neutrino interactions in water/ice by increasing the number of low-inelasticity interactions, with a larger effect for ν than ν. These effects are particularly large in the energy range below a few TeV. These effects could alter the cross sections inferred from events with tracks originating within the active detector volume as well as the ratio ν/ν inferred from inelasticity measurements. The uncertainties in these nuclear effects are larger than the uncertainties on the free-proton cross sections and will thus limit the systematic precision of future high-precision measurements at neutrino telescopes.

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Precise predictions for multi-TeV and PeV energy neutrino scattering rates

Cited by 31 publications

References 63 publications

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

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

Lepton PDFs and Multipurpose Single Lepton Searches at the LHC

Nuclear effects in high-energy neutrino interactions

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