Charge symmetry violation effects in pion scattering off the deuteron

Baru, V.; Kudryavtsev, A. E.; Tarasov, V. E.; Briscoe, W. J.; Dhuga, K. S.; Strakovsky, I. I.

doi:10.1103/physrevc.62.044003

Cited by 3 publications

(8 citation statements)

References 26 publications

(78 reference statements)

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“…There have been several subsequent measurements at LAMPF and TRIUMF for both π + d and π − d (see Ref. [6] for details). The experimental data weakly suggest a small effect in the asymmetry A π for the deuteron.…”

Section: Analysis Of the Experimental Statusmentioning

confidence: 99%

“…Equations (6) represent states of pairs of nucleons (jk) such that their total spin S = 0 and their isospin T = 1. The representation (5) for the WFs of 3 H and 3 He can be generalized for more complicated wave configurations of nuclei, as is discussed in Ref.…”

Section: Amplitudes Of Pion Elastic Scattering From 3 H and 3 Hementioning

confidence: 99%

“…Another way to study CSV is through the pion-nuclear interaction in the lightest nuclei, particularly via isomirror elastic scattering. For the deuteron case, the π + d cross section is compared with that for π − d in Masterson et al [5] and Baru et al [6], but only small differences are found.…”

Section: Introductionmentioning

confidence: 99%

“…Previous studies have indicated that the main reason for CSV in the case of the deuteron is the mass difference of the charge ∆ 33 (1232)-isobar states. The influence of this effect on the scattering amplitude of the πd elastic scattering was discussed in the papers by Masterson et al [5] and Baru et al [6] for single and single-with-double scattering, respectively. Naturally, as the number of multiplescattering diagrams increases with an increasing number of nucleons, one expects the effect of the ∆ 33 -mass splitting to be more prominent for 3 H and 3 He than for 2 H.…”

Section: Introductionmentioning

confidence: 99%

“…We therefore examine the contributions of both single-and double-πN scattering to the pion-nuclear scattering amplitude following techniques developed in Ref. [6]. We then take CSV effects into account to obtain expressions for the ratios (1), which then are compared with the experimental data [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

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Charge-symmetry violation in pion scattering from three-body nuclei

et al. 2002

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We discuss the experimental and theoretical status of charge-symmetry violation (CSV) in the elastic scattering of π + and π − on 3 H and 3 He. Analysis of the experimental data for the ratios r 1 , r 2 , and R at T π = 142, 180, 220, and 256 MeV provides evidence for the presence of CSV. We describe pion scattering from the three-nucleon system in terms of single-and doublescattering amplitudes. External and internal Coulomb interactions as well as the ∆ 33 -mass splitting are taken into account as sources of CSV. Reasonable agreement between our theoretical calculations and the experimental data is obtained for T π = 180, 220, and 256 MeV. For these energies, it is found that the ∆ 33 -mass splitting and the internal Coulomb interaction are the most important contributions for CSV in the three-nucleon system. The CSV effects are rather sensitive to the choice of pion-nuclear scattering mechanisms, but at the same time, our theoretical predictions are much less sensitive to the choice of the nuclear wave function. It is found, however, that data for r 2 and R at T π = 142 MeV do not agree with the predictions of our model, which may indicate that there are additional mechanisms for CSV which are important only at lower energies.PACS numbers: 25.45. De, 25.80.Dj, 24.80.+y, 25.10.+s Typeset using REVT E X A π = dσ/dΩ(π − d) − dσ/dΩ(π + d) dσ/dΩ(π − d) + dσ/dΩ(π + d) .

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Section: Analysis Of the Experimental Statusmentioning

confidence: 99%

Section: Amplitudes Of Pion Elastic Scattering From 3 H and 3 Hementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Charge-symmetry violation in pion scattering from three-body nuclei

et al. 2002

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Numerical relativity: a review

Lehner

2001

Class. Quantum Grav.

188

246

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Computer simulations are enabling researchers to investigate systems which are extremely difficult to handle analytically. In the particular case of General Relativity, numerical models have proved extremely valuable for investigations of strong field scenarios and been crucial to reveal unexpected phenomena. Considerable efforts are being spent to simulate astrophysically relevant simulations, understand different aspects of the theory and even provide insights in the search for a quantum theory of gravity. In the present article I review the present status of the field of Numerical Relativity, describe the techniques most commonly used and discuss open problems and (some) future prospects.

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Dispersion relation constrained partial wave analysis ofπNelastic andπN→ηNscattering data: The baryon spectrum

et al. 2004

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We present results from a comprehensive partial-wave analysis of π ± p elastic scattering and charge-exchange data, covering the region from threshold to 2.1 GeV in the lab pion kinetic energy, employing a coupled-channel formalism to simultaneously fit π − p → ηn data to 0.8 GeV. Our main result, solution FA02, utilizes a complete set of forward and fixed-t dispersion relation constraints, from threshold to 1 GeV, and from t = 0 to −0.4 (GeV /c) 2 , applied to the πN elastic amplitude. A large number of systematic checks have been performed, including fits with no charge-exchange data and other database changes, fits with few or no dispersion relation constraints, and changes to the Coulomb correction scheme. We have also reexamined methods used to extract Breit-Wigner resonance parameters. The quality of fit to both data and dispersion relation constraints is superior to our earlier work. The results of these analyses are compared with previous solutions in terms of their resonance spectra and preferred values for couplings and low-energy parameters, including the πN N coupling constant.

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Charge symmetry violation effects in pion scattering off the deuteron

Cited by 3 publications

References 26 publications

Charge-symmetry violation in pion scattering from three-body nuclei

Charge-symmetry violation in pion scattering from three-body nuclei

Numerical relativity: a review

Dispersion relation constrained partial wave analysis ofπNelastic andπN→ηNscattering data: The baryon spectrum

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