Particle Spectrum of the Supersymmetric Standard Model from the Massless Excitations of a Four Dimensional Superstring

TL;DR

This paper derives the particle spectrum of the supersymmetric Standard Model from a four-dimensional superstring theory, identifying massless states as known particles without introducing traditional supersymmetric partners.

Contribution

It presents a novel superstring-based derivation of the Standard Model particle spectrum, avoiding the need for conventional supersymmetric particles.

Findings

Zero mass states include gluons, W-mesons, B-mesons, and Higgs scalars.

Fifteen zero mass fermions are identified from the Ramond sector.

A supersymmetric Hamiltonian for the Standard Model is constructed without SUSY particles.

Abstract

A superstring action is quantised with Neveu Schwarz(NS) and Ramond(R) boundary conditions. The zero mass states of the NS sector are classified as the vector gluons, W-mesons, $B_{\mu}$-mesons and scalars containing Higgs. The fifteen zero mass fermions are obtained from the Ramond sector. A space time supersymmetric Hamiltonian of the Standard Model is presented without any conventional SUSY particles.