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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.)

Long-range properties of 1S bottomonium states

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Brambilla, Nora [1, 2] ; Krein, Gastao [3] ; Castella, Jaume Tarrus [1] ; Vairo, Antonio [1]
Total Authors: 4
[1] Tech Univ Munich, Dept Phys, James Franck Str 1, D-85748 Garching - Germany
[2] Tech Univ Munich, Inst Adv Study, Lichtenbergstr 2a, D-85748 Garching - Germany
[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. 93, n. 5 MAR 1 2016.
Web of Science Citations: 26

In the framework of weakly coupled potential nonrelativistic QCD, we derive, first, an analytical expression for the chromopolarizability of 1S bottomonium states in agreement with previous determinations. Then we use the QCD trace anomaly to obtain the two-pion production amplitude for the chromopolarizability operator and match the result to a chiral effective field theory with 1S bottomonium states and pions as degrees of freedom. In this chiral effective field theory we compute some long-range properties of the 1S bottomonium generated by the pion coupling such as the leading chiral logarithm to the 1S bottomonium mass and the van der Waals potential between two 1S bottomonium states. Both results improve on previously known expressions. (AU)

FAPESP's process: 13/01907-0 - São Paulo Research and Analysis Center
Grantee:Sergio Ferraz Novaes
Support type: Research Projects - Thematic Grants
FAPESP's process: 13/50841-1 - Charmed hadrons at the confinement scale: structure and interactions with matter
Grantee:Gastão Inácio Krein
Support type: Regular Research Grants