Anomalous quartic ZZgammagamma couplings in gamma-proton collision at the LHC

TL;DR

This paper explores how gamma-proton collisions at the LHC can set stringent new limits on anomalous quartic $ZZ ext{g} ext{a} ext{m} ext{m}$ couplings, significantly improving current bounds.

Contribution

It provides the first detailed analysis of $ZZ ext{g} ext{a} ext{m} ext{m}$ coupling constraints using gamma-proton collisions at the LHC, achieving bounds four orders of magnitude tighter.

Findings

Bounds on anomalous couplings are around $10^{-6} ext{GeV}^{-2}$.

Constraints are significantly tighter than existing experimental limits.

Analysis considers various detector acceptances and luminosities.

Abstract

We investigate the constraints on the anomalous quartic $ZZ\gamma\gamma$ couplings through the process $p p\to p\gamma p\to p \gamma q Z X$ at the LHC. Taking into consideration various forward detector acceptances and integrated LHC luminosities, we find 95% confidence level bounds on the anomalous coupling parameters. We show that the bounds on these couplings are at the order of $10^{-6}GeV^{-2}$ which are about four orders of magnitude more restricted with respect to current experimental bounds.