Constraints on anomalous dimensions from the positivity of the S matrix
Metadatos
Mostrar el registro completo del ítemAutor
Rodríguez Chala, MikaelEditorial
American Physical Society
Fecha
2023-07-24Referencia bibliográfica
Rodríguez Chala, M. Constraints on anomalous dimensions from the positivity of the S matrix. Phys. Rev. D 108, 015031. [DOI: 10.1103/PhysRevD.108.015031]
Patrocinador
European Union NextGenerationEU/PRTR; SRA PID2019–106087GB-C21, PID2021-128396NB-I00; FEDER; Ministerio de Economía y Competitividad CNS2022-136024, MCIN/AEI/10.13039/501100011033, RYC2019-027155-I MINECO; Junta de Andalucía A-FQM-211-UGR18, FQM 101, P18-FR-4314, P21-00199Resumen
We show that the analyticity and crossing symmetry of the S matrix, together with the optical theorem, impose restrictions on the renormalization group evolution of dimension-8 operators in the Standard Model effective field theory. Moreover, in the appropriate basis of operators, the latter manifest as zeros in the anomalous dimension matrix that, to the best of our knowledge, have not been anticipated anywhere else in the literature. Our results can be trivially extended to other effective field theories.