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Author  |
Hiller Blin, A.N.; Gutsche, T.; Ledwig, T.; Lyubovitskij, V.E. |
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Title |
Hyperon forward spin polarizability gamma(0) in baryon chiral perturbation theory |
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Journal Article |
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Year |
2015 |
Publication |
Physical Review D |
Abbreviated Journal |
Phys. Rev. D |
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Volume |
92 |
Issue |
9 |
Pages |
096004 - 9pp |
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Abstract |
We present the calculation of the hyperon forward spin polarizability gamma(0) using manifestly Lorentz-covariant baryon chiral perturbation theory including the intermediate contribution of the spin-3/2 states. As at the considered order the extraction of. 0 is a pure prediction of chiral perturbation theory, the obtained values are a good test for this theory. After including explicitly the decuplet states, our SU(2) results have a very good agreement with the experimental data and we extend our framework to SU(3) to give predictions for the hyperons'. 0 values. Prominent are the Sigma(-) and Xi(-) baryons as their photon transition to the decuplet is forbidden in SU(3) symmetry and therefore they are not sensitive to the explicit inclusion of the decuplet in the theory. |
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Address |
[Hiller Blin, Astrid; Ledwig, Tim] Univ Valencia, Dept Fis Teor, Valencia 46071, Spain, Email: astrid.blin@ific.uv.es |
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Publisher |
Amer Physical Soc |
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Language |
English |
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Original Title |
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Series Volume |
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ISSN |
1550-7998 |
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Notes |
WOS:000364020300009 |
Approved |
no |
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Is ISI |
yes |
International Collaboration |
yes |
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Call Number |
IFIC @ pastor @ |
Serial |
2451 |
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