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The impact of chirally odd condensates on the rho meson
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, Nuclear Physics.
2012 (English)In: Physics Letters B, ISSN 0370-2693, Vol. 709, no 3, 200-206 p.Article in journal (Refereed) Published
Abstract [en]

Based on QCD sum rules we explore the consequences of a scenario for the rho meson, where the chiral symmetry breaking condensates are set to zero whereas the chirally symmetric condensates remain at their vacuum values. This clean-cut scenario causes a lowering of the rho spectral moment by about 120 MeV. The complementarity of mass shift and broadening is discussed. A simple parametrization of the rho spectral function leads to a width of about 280 MeV if no shift of the peak position is assumed.

Place, publisher, year, edition, pages
2012. Vol. 709, no 3, 200-206 p.
Keyword [en]
Hadron properties, QCD sum rules, Chiral symmetry, Chiral restoration
National Category
Physical Sciences
URN: urn:nbn:se:uu:diva-172825DOI: 10.1016/j.physletb.2012.02.007ISI: 000301758800012OAI: oai:DiVA.org:uu-172825DiVA: diva2:516209
Available from: 2012-04-17 Created: 2012-04-16 Last updated: 2012-04-17Bibliographically approved

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