Hybrid mesons and AdS/QCD duality with corrections to the anomalous dimension

• Grant number: 25/01268-4
• Support Opportunities: Scholarships in Brazil - Master
• Start date: July 01, 2025
• End date: January 31, 2027
• Field of knowledge: Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
• Principal Investigator: Roldão da Rocha
• Grantee: Hudson Vinicius de Almeida Silva
• Host Institution: Centro de Matemática, Computação e Cognição (CMCC). Universidade Federal do ABC (UFABC). Ministério da Educação (Brasil). Santo André , SP, Brazil
• Associated research grant: 21/01089-1 - Cherenkov Telescope Array: construction and first discoveries, AP.ESP

Abstract

This project will develop and implement theoretical and phenomenological aspects of AdS/CFT holographic correspondences and AdS/QCD. We will address the dissociation of several types of mesons, including exotic mesons. We will use extensions of the soft-wall AdS/QCD model, wherewe will explore hybrid configurations in the light meson sector comprising a quark, an antiquarkand one (or more) excited gluon(s), studying the properties of such states and their stability atfinite temperature as well as magnetic field. In this scenario, the soft-wall AdS/QCD enhanceddue to lattice QCD results is constructed by fitting the results obtained from lattice QCD at pseudocritical temperatures. We will also investigate, in an extended AdS/QCD model introducing two modifications based on anomalous dimensions, other exotic mesons, including hadrocharmonia, hadronic molecules, tetraquarks and pentaquarks, including hybrid mesons consisting of heavy flavor quarks, incorporating the quark masses into the model.