Indications on the Mass of the Lightest Electroweak Baryon

TL;DR

This paper explores how effective Lagrangian models can estimate the mass bounds of the lightest electroweak baryon, using theoretical, phenomenological, and experimental constraints, with potential improvements from LHC data.

Contribution

It relates electroweak baryon masses to effective Lagrangian coefficients and discusses how current and future constraints can bound these masses.

Findings

Mass bounds can be estimated from effective Lagrangian coefficients.

Current constraints suggest possible mass ranges for electroweak baryons.

LHC experiments could refine these mass bounds significantly.

Abstract

In general, an effective low-energy Lagrangian model of composite electroweak symmetry breaking contains soliton solutions that may be identified with technibaryons. We recall how the masses of such states may be related to the coefficients of fourth-order terms in the effective Lagrangian, and review the qualitative success of this approach for baryons in QCD. We then show how the current theoretical and phenomenological constraints on the corresponding fourth-order coefficients in the electroweak theory could be used to estimate qualitative lower and upper bounds on the lightest electroweak baryon mass. We also discuss how the sensitivity of the LHC experiments could enable these bounds to be improved.