Fermion dominated composite superstring model and unified description of hadron and lepton degrees of freedom in it

TL;DR

This paper introduces a novel superstring model with extended supergauge constraints that unifies hadron and lepton descriptions, providing finite amplitudes and addressing parity twin issues in baryons.

Contribution

It presents a new string dynamics framework based on extended supergauge constraints, unifying hadron and lepton degrees of freedom with finite amplitudes.

Findings

Model incorporates three two-dimensional surfaces for hadron strings

Achieves finiteness of loop amplitudes due to extended constraints and fermion-boson field imbalance

Provides a unified fermionic description of hadron and lepton dynamics

Abstract

New string dynamics is formulated on the basis of the extended set of supergauge constraints including not only supergauge Virasoro conditions but also nilpotent supercurrent constraints . This approach arises from a natural generalization of the classical operator many-string vertices. The formulation of this model leads to three two-dimensional surfaces for description of hadron strings. It gives some dynamical generalization of Chan-Paton factor for string amplitudes in terms of operator vertices. Supersymmetry on the 2-d world surface is present but ten-dimensional supersymmetry is absent. In this approach two-dimensional fermion string fields make it possible to give a unified description of hadron and lepton degrees of freedom and of its dynamics. This model allows to solve the problem of elimination of the most part of parity twins in the baryon spectrum. One-loop (and many-loops perhaps) amplitudes in this model are finite due to the extended set of supergauge constraints and to the significant excess of the total number of fermion two-dimensional fields over the number of boson 2-d fields.