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Next-to-leading order corrections in QCD sum rules

Grant number: 16/02717-8
Support Opportunities:Scholarships in Brazil - Master
Effective date (Start): May 01, 2016
Effective date (End): September 01, 2018
Field of knowledge:Physical Sciences and Mathematics - Physics - Elementary Particle Physics and Fields
Principal Investigator:Ricardo D'Elia Matheus
Grantee:Jesuel Marques Leal Junior
Host Institution: Instituto de Física Teórica (IFT). Universidade Estadual Paulista (UNESP). Campus de São Paulo. São Paulo , SP, Brazil
Associated scholarship(s):17/15346-0 - The Delta Baryon in Nuclear Medium in QCD Sum Rules, BE.EP.MS


The QCD Sum Rules (QCDSR) method allows us to have an approximate treatment for non-perturbative effects in QCD. Using this technique one can obtain hadronic parameters from the underlying theory, namely QCD. The calculations involved are lengthy, with many Feynman diagrams and loops even at leading order (LO). As a consequence of this technical difficulty many recent QCDSR results are obtained only at LO and have considerable theoretical uncertainties. We intend to obtain next-to-leading (NLO) results for a few important calculations, with the aim of developing a systematic approach for the calculation of these corrections. We also intend to explore the possibility of applying recent advances in Generalized Unitarity methods to the QCDSR. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
MARQUES L, JESUEL; LEE, SU HOUNG; PARK, AARON; MATHEUS, R. D.; JEONG, KIE SANG. QCD sum rules for the Delta isobar in neutron matter. Physical Review C, v. 98, n. 2, . (17/15346-0, 16/02717-8)
Academic Publications
(References retrieved automatically from State of São Paulo Research Institutions)
LEAL JUNIOR, Jesuel Marques. Correções em next-to-leading order em regras de soma da QCD. 2019. Master's Dissertation - Universidade Estadual Paulista (Unesp). Instituto de Física Teórica (IFT). São Paulo São Paulo.

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