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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Effective field theory for the nucleon-quarkonium interaction

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Tarrus Castella, Jaume [1, 2] ; Krein, Gastao [3]
Total Authors: 2
[1] Univ Autonoma Barcelona, Dept Fis, Grp Fis Teor, E-08193 Bellaterra, Catalonia - Spain
[2] Univ Autonoma Barcelona, IFAE BIST, E-08193 Bellaterra, Catalonia - Spain
[3] Univ Estadual Paulista, Inst Fis Teor, Rua Dr Bento Teobaldo Ferraz, 271 Bloco 2, BR-01140070 Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Physical Review D; v. 98, n. 1 JUL 23 2018.
Web of Science Citations: 4

We develop an effective field theory approach for the S-wave quarkonium-nucleon system. We adopt a natural power counting equivalent to Weinberg's power counting in nucleon-nucleon effective field theories and compute the quarkonium-nucleon potential, scattering length and effective range up to O(m(pi)(3)/Lambda(3)(chi)) accuracy, including the full light-quark mass dependence. We compare our results with lattice QCD studies of quarkonium-nucleon system, obtain an estimation of the leading order quarkonium-nucleon contact term and determine the J/psi and eta(c) chromopolarizabilities. (AU)

FAPESP's process: 13/01907-0 - São Paulo Research and Analysis Center
Grantee:Sergio Ferraz Novaes
Support type: Research Projects - Thematic Grants