Low energy electromagnetic processes based on the chiral effective field theory approach

D. Rozpedzik; J. Golak

doi:10.1088/1674-1137/34/9/051

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2024年10月30日

Chinese Physics C> 2010, Vol. 34> Issue(9) : 1393-1395 DOI: 10.1088/1674-1137/34/9/051

Low energy electromagnetic processes based on the chiral effective field theory approach

D. Rozpedzik ^, ,
J. Golak

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Abstract：
Chiral effective field theory describes the interaction of nucleons and pions in the low-energy regime of QCD. This theory offers a consistent picture of nuclear forces and nuclear current operators. We study the electromagnetic processes based on ChEFT dynamical picture and compare our predictions to results obtained in the conventional framework. In particular, we consider low energy photo-disintegration of the deuteron at different orders of the chiral expansion. We investigate a role of different ingredients in the two-nucleon current operator. For the first time calculations involve consistent contributions from long-range two-pion exchange currents which appear at next-to-leading order of the chiral expansion. We present novel results for cross sections and various polarization observables.

References

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. Park T S et al. Phys. Rept., 1993, 233: 3412. Krebs H et al. Eur. Phys. J. A, 2004, 22: 5033. Golak J et al. Phys. Rept., 2005, 415: 894. Pastore S et al. Phys. Rev. C, 2008, 78: 0640025. Klling S et al. arxiv.org:nucl-th/0907.3437v1 (2009)6. Epelbaum E et al. Nucl. Phys. A, 2003, 714: 5357. Glckle W et al. The QM Few-Body Problem, 19838. Epelbaum E et al. Nucl. Phys. A, 2005, 747: 3629. Wiringa R B et al. Phys. Rev. C, 1995, 51: 38

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D. Rozpedzik and J. Golak. Low energy electromagnetic processes based on the chiral effective field theory approach[J]. Chinese Physics C, 2010, 34(9): 1393-1395. doi: 10.1088/1674-1137/34/9/051

D. Rozpedzik and J. Golak. Low energy electromagnetic processes based on the chiral effective field theory approach[J]. Chinese Physics C, 2010, 34(9): 1393-1395. doi: 10.1088/1674-1137/34/9/051 shu

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Received: 2010-03-04
Revised: 1900-01-01

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Low energy electromagnetic processes based on the chiral effective field theory approach

D. Rozpedzik ^,
J. Golak

Corresponding author: D. Rozpedzik,

Received Date: 2010-03-04
Accepted Date: 1900-01-01
Available Online: 2010-09-05

Abstract:

Chiral effective field theory describes the interaction of nucleons and pions in the low-energy regime of QCD. This theory offers a consistent picture of nuclear forces and nuclear current operators. We study the electromagnetic processes based on ChEFT dynamical picture and compare our predictions to results obtained in the conventional framework. In particular, we consider low energy photo-disintegration of the deuteron at different orders of the chiral expansion. We investigate a role of different ingredients in the two-nucleon current operator. For the first time calculations involve consistent contributions from long-range two-pion exchange currents which appear at next-to-leading order of the chiral expansion. We present novel results for cross sections and various polarization observables.