The charged-current non-standard neutrino interactions at the LHC and HL-LHC

Abstract

A series of new physics scenarios predict the existence of the extra charged gauge boson W , which can induce the charged-current (CC) non-standard neutrino interactions (NSI). By using the Monte-Carlo (MC) simulation, we discuss the sensitivity and constraints on the CC NSI parameters qq Y αβ (α = β = e or µ) for different W masses M W via the process pp → W → ν. We find that the interference term

Searching for the charged-current non-standard neutrino interactions at the e−p colliders

“…The constraints on the CC NSI parameters have been studied at the LHC [17,22], but relevant study at the e − p collider is currently not available. In this paper, we mainly study the possibility of detecting the CC NSI parameters induced by exchange of the new gauge boson W at the LHeC and FCC-he.…”

“…Ref. [17] derives theoretical constraints on the CC NSI parameters from perturbative unitarity and W decays. For M W ≤ 4 TeV and Γ W /M W = 0.1, the W decays can generate more strongly constraint as L ≤ 10.868 × M 2 W /M 2 W .…”

“…We use the similar method to give the lower limits of the sensitivities of the Ref. [17] and the absolute values of the lower limits on the CC NSI parameters at the FCC-he are smaller than those of the HL-LHC about two orders of magnitude. So we can say that, as a complement to the pp collider, the LHeC and FCC-he can offer exciting prospects for detecting the CC NSI effects.…”

“…The presence of NSIs not only has a great impact on the precision measurements of neutrino oscillation experiments, but also is an important platform for studying the impact of new physics in high-and low-energy collider experiments and leads to a very rich phenomenology [7][8][9][10][11][12][13][14][17][18][19][20][21][22]. In particular, the effect of the CC NSI in neutrino oscillation experiments depends on the strength of the new vector interaction, which strongly depends on the flavor structure of the CC NSI, leading to a degeneracy that is difficult to break by neutrino facilities [23].…”

Tri-photon at muon collider: a new process to probe the anomalous quartic gauge couplings

“…The dimension-8 operators are important with respect to the convex geometry perspective to the operator space [13][14][15]. Moreover, there exist various NP models generating dimension-8 effective operators relevant for aQGCs [16][17][18][19][20][21][22][23][24][25]. The aQGCs can then be induced by tree-level diagrams while the aTGCs cannot [26].…”