Reaction (<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>d</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">pol</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mo>,</mml:mo></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msup></mml:mrow></mml:math>He) at intermediate energies

Ellegaard, C.; Gaarde, C.; Jørgensen, Tue Smith; Larsen, Jørgen Nedergaard; Goodman, C.D.; Bergqvist, I.; Brockstedt, A.; Ekström, Peter; Bedjidian, M.; Contardo, D.; Grossiord, J. Y.; Guichard, A.; Bachelier, D.; Boyard, J. L.; Hennino, T.; Jourdain, J.C.; Roy‐Stéphan, M.; Radvanyi, P.; Tinsley, James

doi:10.1103/physrevlett.59.974

Cited by 97 publications

(25 citation statements)

References 11 publications

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“…Under these conditions, the final-state interaction in the 1 S 0 state of the pp system is very strong. The impulse approximation predictions were tested successfully for very small E pp at beam energies of T d = 1.6 GeV and 2.0 GeV using both hydrogen and deuterium targets [3,4,5]. A refined numerical evaluation [6] proved that the theoretical description was equally valid over a larger E pp range at 200 and 350 MeV [7].…”

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confidence: 99%

Vector and tensor analysing powers in deuteron–proton breakup reactions at intermediate energies

et al. 2006

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Vector and tensor analysing powers of the dp → (pp)n (charge-exchange) and dp → (pn)p (non-charge-exchange) breakup reactions have been measured with the ANKE spectrometer at the COSY ring at a deuteron beam energy of 1170 MeV for small momentum transfers to the low excitation energy (pp) or (pn) systems. A quantitative understanding of the values of A xx and A yy for the charge-exchange reaction is provided by impulse approximation calculations. The data suggest that spin-flip isospin-flip transitions, which dominate the charge-exchange breakup of the deuteron, are also important in the non-charge-exchange reaction.

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confidence: 99%

Vector and tensor analysing powers in deuteron–proton breakup reactions at intermediate energies

et al. 2006

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“…To achieve maximum sensitivity, the excitation energy E pp in the final pp system must be very low so that the final diproton is in the 1 S 0 configuration. Experiments from a few hundred MeV up to 2 GeV [7,8] have generally borne out well predictions based upon the impulse approximation [6].…”

Section: Introductionmentioning

confidence: 99%

The neutron-proton charge-exchange amplitudes measured in the dp → ppn reaction

et al. 2013

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Abstract. The unpolarised differential cross section and the two deuteron tensor analysing powers Axx and Ayy of the dp → {pp}sn charge-exchange reaction have been measured with the ANKE spectrometer at the COSY storage ring. Using deuteron beams with energies 1.2, 1.6, 1.8, and 2.27 GeV, data were obtained for small momentum transfers to a {pp}s system with low excitation energy. The results at the three lower energies are consistent with impulse approximation predictions based upon the current knowledge of the neutron-proton amplitudes. However, at 2.27 GeV, where these amplitudes are far more uncertain, agreement requires a reduction in the overall double-spin-flip contribution, with an especially significant effect in the longitudinal direction. These conclusions are supported by measurements of the deuteronproton spin-correlation parameters Cx,x and Cy,y that were carried out in the d p → {pp}sn reaction at 1.2 and 2.27 GeV. The values obtained for the proton analysing power A p y also suggest the need for a radical reevaluation of the neutron-proton elastic scattering amplitudes at the higher energy. It is therefore clear that such measurements can provide a valuable addition to the neutron-proton database in the charge-exchange region. PACS

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“…It is well known, that the ∆ feels an attractive potential of about -30 MeV at normal nuclear density [19], which has an effect on any production process involving the ∆. Indeed, in ( 3 He, t) and (d, 2 He) reactions a shift of the ∆-peak relative to the reaction on the proton has been observed [47,48]. A considerable part of this shift is, however, due to trivial effects e.g.…”

Section: Medium Effectsmentioning

confidence: 99%

Coherent photoproduction of pions on spin-zero nuclei in a relativistic, non-local model

1998

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A relativistic and non-local model for the coherent photoproduction of pions on spin-zero nuclei is presented. The production operator is derived from an effective Lagrangian model that contains all the degrees of freedom known to contribute to the elementary process. Using the framework of DWIA, the matrix elements of this operator are evaluated using relativistic bound state wave functions. Final state interactions are accounted for via a pion-nucleus optical potential. The effects of in-medium modifications of the production operator are discussed. We give results for 12 C and 40 Ca, and compare our calculations to the data of the A2 collaboration at MAMI.

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Reaction (dpol,2He) at intermediate energies

Cited by 97 publications

References 11 publications

Vector and tensor analysing powers in deuteron–proton breakup reactions at intermediate energies

Vector and tensor analysing powers in deuteron–proton breakup reactions at intermediate energies

The neutron-proton charge-exchange amplitudes measured in the dp → ppn reaction

Coherent photoproduction of pions on spin-zero nuclei in a relativistic, non-local model

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