Compton scattering from the proton: An analysis using the delta expansion up to N3LO

McGovern, Judith A.; Grieshammer, Harald; Phillips, Daniel R.; Shukla, Deepshikha

doi:10.22323/1.086.0059

Cited by 2 publications

(2 citation statements)

References 8 publications

(16 reference statements)

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“…( 2). Recently, the "δ-counting" scheme has been applied to extract the scalar polarizabilities using a subset of low-energy data up to E γ = 149 MeV [25], and a preliminary study in a larger energy range has been presented in [31]. Both these analyses tend to favor a larger value for β p M 1 than given by Eq.…”

Section: Extraction Of Rcs Polarizabilitiesmentioning

confidence: 99%

Nucleon Polarizabilities: Theory

Pasquini,

Drechsel,

Vanderhaeghen

2011

Preprint

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We review recent developments in the theoretical investigation of the nucleon polarizabilities. We first report on the static polarizabilities as measured in real Compton scattering, comparing and interpreting the results from various theoretical approaches. In a second step, we extend the discussion to the generalized polarizabilities which can be accessed in virtual Compton scattering, showing how the information encoded in these quantities can provide a spatial interpretation of the induced polarization densities in the nucleon.

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Section: Extraction Of Rcs Polarizabilitiesmentioning

confidence: 99%

Nucleon Polarizabilities: Theory

Pasquini,

Drechsel,

Vanderhaeghen

2011

Preprint

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“…I will not discuss Compton scattering from the NN and NNN systems. There is considerable experimental interest in these processes, but the advances in theory are summarized in the contributions to these proceedings by McGovern and Grießhammer [30,31]. The exciting discovery that elastic Compton scattering from Helium-3 nuclei could be a useful probe of dipole electric and magnetic neutron polarizabiltiies and neutron spin polarizabilities [32,33] was already discussed at the last "Chiral Dynamics" workshop.…”

Section: Pos(cd09)066mentioning

confidence: 99%

Calculations of electromagnetic (and a few weak) reactions of light nuclei in chiral effective theory

Phillips¹

2010

Proceedings of 6th International Workshop on Chiral Dynamics — PoS(CD09)

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I discuss the calculation of electromagnetic and weak reactions in systems with A = 2-4 using potentials and current operators derived within chiral effective theory (χET). I focus on computations up to O(P 3 ) relative to leading, and review results that show:(a) At this order χET gives a good description of extant data on the deuteron's charge and quadrupole form factors for momentum transfers |q| < 0.6 GeV. Its predictions will be challenged by forthcoming precision data from BLAST and JLab.(b) The χET nuclear force and current operator can be fixed up to O(P 3 ) using NN-system observables, together with two pieces of strong-interaction data from the three-nucleon system. χET then explains the magnetic moments of 3 H and 3 He, as well as experiments on the threshold capture reaction nd→tγ.(c) The χET expansion for weak currents has reached unprecedented accuracy. When used to anlayze data on the weak-capture process, 3 He(µ − , ν µ ) 3 H, it yields the tightest contraint on the conserved vector-current hypothesis.In all these cases I stress χET's ability to systematically describe the interplay between the pionrange and shorter-distance dynamics that is at work in these reactions.

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Compton scattering from the proton: An analysis using the delta expansion up to N3LO

Cited by 2 publications

References 8 publications

Nucleon Polarizabilities: Theory

Nucleon Polarizabilities: Theory

Calculations of electromagnetic (and a few weak) reactions of light nuclei in chiral effective theory

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