dorsal/arxiv
View SchemaNeutral Meson Photoproduction in $SU_f(3)$ $\chi$PT
| Authors | M. K. Banerjee, J. Milana |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9601036 |
| URL | https://arxiv.org/abs/nucl-th/9601036 |
| DOI | 10.1103/PhysRevD.54.1182 |
| Journal | Phys.Rev.D54:1182-1186,1996 |
Abstract
We present the results for the electric dipole amplitude for $\gamma N \to \pi^0 N$ at threshold at the $O(p^2)$ level in SU$_f$(3) chiral perturbation theory. We find that the SU$_f$(3) results differ only slightly from the SU$_f$(2) results. At the $O(p^3)$ level one encounters new, unknown counterterms to fix which one is likely to need the threshold photoproduction data themselves, thus losing predictive power. We suggest, instead, that the {\it difference} between the proton and neutron $\pi^0$ photoproduction amplitudes may provide a test of the convergence properties of the $\chi$PT in the present context. We urge that the neutron's electric dipole amplitude be measured.
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"abstract": "We present the results for the electric dipole amplitude for $\\gamma N \\to\n\\pi^0 N$ at threshold at the $O(p^2)$ level in SU$_f$(3) chiral perturbation\ntheory. We find that the SU$_f$(3) results differ only slightly from the\nSU$_f$(2) results. At the $O(p^3)$ level one encounters new, unknown\ncounterterms to fix which one is likely to need the threshold photoproduction\ndata themselves, thus losing predictive power. We suggest, instead, that the\n{\\it difference} between the proton and neutron $\\pi^0$ photoproduction\namplitudes may provide a test of the convergence properties of the $\\chi$PT in\nthe present context. We urge that the neutron\u0027s electric dipole amplitude be\nmeasured.",
"arxiv_id": "nucl-th/9601036",
"authors": [
"M. K. Banerjee",
"J. Milana"
],
"categories": [
"nucl-th",
"hep-ph"
],
"doi": "10.1103/PhysRevD.54.1182",
"journal_ref": "Phys.Rev.D54:1182-1186,1996",
"title": "Neutral Meson Photoproduction in $SU_f(3)$ $\\chi$PT",
"url": "https://arxiv.org/abs/nucl-th/9601036"
},
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