The Phenomenology of the Lightest Pseudo Nambu Goldstone Boson at Future Colliders

TL;DR

This paper explores how future linear colliders can detect and analyze the lightest pseudo-Nambu-Goldstone boson in dynamical symmetry breaking models, highlighting detection strategies in e+e- and gamma gamma collision modes.

Contribution

It demonstrates the potential for discovering and studying the P_0 boson at future colliders, detailing specific production channels and detection prospects for N_TC=4.

Findings

Discovery possible at e+e- colliders with 100 fb^-1 at 500 GeV if m_{P_0} is not near m_Z.

Gamma gamma mode provides a robust signal for broad m_{P_0} range.

High statistical accuracy achievable in gamma gamma -> P_0 -> b anti b measurements.

Abstract

The capability of the linear collider to discover and study the lightest neutral pseudo-Nambu-Goldstone boson P_0 of dynamical symmetry breaking models in the e+e- and gamma gamma modes is presented. For a number of technicolor N_TC=4, the discovery of the P_0 at an e+e- collider via the reaction e+e- -> gamma P_0 should be possible for an integrated luminosity of L=100 fb^-1 at E=500 GeV as long as m_{P_0} is not near m_Z. In the gamma gamma collider mode the gamma gamma -> P_0 -> b anti b signal should be very robust and could be measured with high statistical accuracy for a broad range of m_{P_0} if N_TC=4.