Journal
PHYSICS LETTERS B
Volume 726, Issue 4-5, Pages 892-895Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.physletb.2013.09.045
Keywords
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Funding
- Ministry of Education, Culture and Sports, Spain [FPA2008-01177]
- Xunta de Galicia [INCITE09.296.035PR]
- Xunta de Galicia (Conselleria de Educacion)
- Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042]
- EDER
- Spanish Ministery of Education, Culture and Sports [FPU AP2010-5772]
- Polish NCN [2011/01/B/ST2/00464]
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We calculate the rotational-vibrational spectrum in the BPS Skyrme model for the hedgehog skyrmion with baryon number one. The resulting excitation energies for the nucleon and delta Roper resonances are slightly above their experimental values. Together with the fact that in the standard Skyrme model these excitation energies are significantly lower than the experimental ones, this provides strong evidence for the conjecture that the inclusion of the BPS Skyrme model is required for a successful quantitative description of physical properties of baryons and nuclei. (C) 2013 Elsevier B.V. All rights reserved.
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