Analyzing power in neutron-deuteron elastic scattering at<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msubsup><mml:mrow><mml:mi mathvariant="italic">E</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="normal">lab</mml:mi></mml:mrow><mml:mrow><mml:mi mathvariant="italic">n</mml:mi></mml:mrow></mml:msubsup></mml:mrow></mml:math>=3 MeV

McAninch, J.E.; Lamm, LO; Haeberli, W.

doi:10.1103/physrevc.50.589

Cited by 30 publications

(30 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The available 3N forces are found to have little influence, except for the J π = 1 2 + partial wave [5,6]. The situation in neutron-deuteron scattering is similar [6][7][8], although only the cross section and A y have been measured to date at low energies. By far the most glaring difference between theory and experiment is in the VAPs, a discrepancy which has come to be known as the "A y (θ) puzzle" [8].…”

Section: Introductionmentioning

confidence: 90%

Proton-deuteron elastic scattering at low energies

et al. 2001

View full text Add to dashboard Cite

We present measurements of differential cross sections and the analyzing powers Ay, iT11, T20, T21, and T22 at Ec.m. = 431.3 keV. In addition, an excitation function of iT11(θc.m. = 87.8• ) for 431.3 ≤ Ec.m. ≤ 2000 keV is presented. These data are compared to calculations employing realistic nucleon-nucleon interactions, both with and without three-nucleon forces. Excellent agreement with the tensor analyzing powers and cross section is found, while the Ay and iT11 data are found to be underpredicted by the calculations.13.75. Cs,21.45.+v,24.70.+s,

show abstract

Section: Introductionmentioning

confidence: 90%

Proton-deuteron elastic scattering at low energies

et al. 2001

View full text Add to dashboard Cite

show abstract

“…Experiments for nd scattering A y were made at E n = 3 MeV in Wisconsin [15], and above 5 MeV at TUNL at E n =5 and 6. [20].…”

Section: Planning For Nd a Y Experimentsmentioning

confidence: 99%

Experimental Investigations of Discrepancies in Three-Nucleon Reactions

Sagara

2010

Few-Body Syst

View full text Add to dashboard Cite

Experiments on pd scattering, pd capture and pd breakup performed by our Kyushu University group since 1988 are reviewed. Various discrepancies between the experimental results and 3N Faddeev calculations have been found, and systematical measurements of the discrepancies have been made. From discrepancies in pd scattering cross section and in 3N binding energy, 2π-exchange 3N force was determined, and the discrepancies were satisfactorily diminished. There are, however, still many discrepancies awaiting theoretical investigation, as described in this report. IntroductionA precise experimental study of three-nucleon (3N) reactions at Kyushu University Tandem Accelerator Laboratory (KUTL) was started in 1988. Before the 3N experiments, high-intensity polarized p-and d-beams had been already developed at KUTL to measure ( d, p) polarization transfer coefficients. These beams were used to obtain high-statistics 3N data. To obtain high-precision and reliable 3N data, experimental facilities were improved.Beam polarization and beam position on the target should be stable in order to obtain reliable data. Also beam intensity should be stable to correctly estimate counting efficiency of detectors. Beam polarization, integrated beam charge, and target thickness (gas pressure and length along the beam axis) should be accurately measured. To obtain high-statistic data, data acquisition speed should be fast enough to accumulate many counts with low counting loss. These requirements were not easily satisfied in a university laboratory.Our purpose for starting 3N experiments at that time was to find 3N forces and to solve A y puzzle. Numerical calculations of Faddeev equations were greatly developed in 1980's. Speeds of computers became faster every year. Koike and Heidenbauer pointed out presence of A y puzzle (1986) [1]. Faddeev calculations with realistic NN potentials instead of separable potentials were made first by Takemiya [2], then by Bochum group [3,4].We decided therefore, to obtain precise and systematic experimental data of 3N reactions. When the precise data were compared with reliable Faddeev calculations, shortage of 2N force (2NF) might appear as a discrepancy between the data and the calculations. The discrepancy might indicate effects of 3NF or other origins which we were looking for. If a discrepancy was confirmed, theoretical investigations would reveal its origin(s), which would be 3NF or others. On this thought, we started precise and systematic experiments on pd system at KUTL in 1988.By 2009 we have made many experiments on (a) pd scattering in a beam energy range of 2-18 MeV,

show abstract

“…One example is the A y puzzle, where experimental evidence [1][2][3] is not consistent with existing theoretical predictions [4][5][6]. For decades these systems were studied using various potential models [7].…”

Section: Introductionmentioning

confidence: 99%

He3andpdscattering to next-to-leading order in pionless effective field theory

et al. 2014

View full text Add to dashboard Cite

We study the three-body systems of 3 He and pd scattering and demonstrate, both analytically and numerically, that a new pd three-body force is needed at next-to-leading order in pionless effective field theory. We also show that at leading order these observables require no new threebody force beyond what is necessary to describe nd scattering. We include electromagnetic effects by iterating only diagrams that involve a single photon exchange in the three-body sector.

show abstract

Analyzing power in neutron-deuteron elastic scattering atElabn=3 MeV

Cited by 30 publications

References 27 publications

Proton-deuteron elastic scattering at low energies

Proton-deuteron elastic scattering at low energies

Experimental Investigations of Discrepancies in Three-Nucleon Reactions

He3andpdscattering to next-to-leading order in pionless effective field theory

Contact Info

Product

Resources

About