Study of the reaction<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msub><mml:mrow><mml:mi>p</mml:mi></mml:mrow><mml:mrow><mml:mi>↑</mml:mi></mml:mrow></mml:msub></mml:mrow></mml:math>p→p<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>n with polarized beam from 1.18 to 1.98 GeV/<i>c</i>

Wicklund, A. B.; Sauer, J.R.; Nodulman, L.; Swallow, E. C.; Diebold, R.; Calkin, M.M.; Mutchler, G. S.; Hoftiezer, J.; Ayres, D. S.; Corcoran,; Arenton, M. W.; May, E. N.; Miettinen, H.

doi:10.1103/physrevd.35.2670

Cited by 65 publications

(33 citation statements)

References 90 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The pp → ppπ 0 total cross section is known [18], but more resonances with non-isotropic behavior are involved. For instance, the pion scattering angle distribution θ ∆ π in the NN → N∆ → NNπ reaction has been found by bubble chamber experiments to be in disagreement to one-pion exchange [19].…”

Section: Exclusive Meson Production In the P + P Reaction At 22 Gevmentioning

confidence: 99%

“…For the ∆ and N * production the strong forwardbackward peaking of the polar angle distribution has been taken into account [25,26]. For the distribution of θ ∆ π the measured coefficient [19] was used. In addition, the influence of applying a pure one-pion exchange model has been evaluated.…”

Section: Exclusive Meson Production In the P + P Reaction At 22 Gevmentioning

confidence: 99%

See 1 more Smart Citation

Meson and Di-Electron Production With Hades

Fröhlich¹,

Agakishiev²,

Agodi³

et al. 2009

Int. J. Mod. Phys. A

View full text Add to dashboard Cite

The HADES experiment, installed at GSI, Darmstadt, measures di-electron production in A + A, p/π + N and p/π + A collisions. Here, the π 0 and η Dalitz decays have been reconstructed in the exclusive p + p reaction at 2.2 GeV to form a reference cocktail for long-lived di-electron sources. In the C+C reaction at 1 and 2 GeV/u, these long-lived sources have been subtracted from the measured inclusive e + e − yield to exhibit the signal from the early phase of the collision. The results suggest that resonances play an important role in dense nuclear matter.

show abstract

Section: Exclusive Meson Production In the P + P Reaction At 22 Gevmentioning

confidence: 99%

Section: Exclusive Meson Production In the P + P Reaction At 22 Gevmentioning

confidence: 99%

Meson and Di-Electron Production With Hades

Fröhlich¹,

Agakishiev²,

Agodi³

et al. 2009

Int. J. Mod. Phys. A

View full text Add to dashboard Cite

show abstract

“…[11][12][13]. The present study in the near threshold region will provide information on polarization observables in a region still subject to relatively parameter-free microscopic calculations.…”

Section: Introductionmentioning

confidence: 99%

Spin correlation coefficients in from 325 to 400 MeV

Saha¹,

Daehnick²,

Flammang³

et al. 1999

Physics Letters B

View full text Add to dashboard Cite

The spin correlation coefficient combinations S ≡ Axx + Ayy, D ≡ Axx − Ayy and the analyzing powers Ay(θ) were measured for p p → pnπ + at beam energies of 325, 350, 375 and 400 MeV. A polarized internal atomic hydrogen target and a stored, polarized proton beam were used. These polarization observables are sensitive to contributions of higher partial waves. A comparison with recent theoretical calculations is provided.

show abstract

“…Ref. [35] extracts the coefficientĀ to be 0.65. Our approach is to use the polar axis taken as the momentum transfer direction to the excited nucleon in the c.m.…”

Section: ∆(1232) → Nπmentioning

confidence: 99%

“…Pluto: A Monte Carlo Simulation Tool for Hadronic Physics I. Fröhlich calculation from the previous section, and scale A such that the result of [35] is reproduced. This is also consistent with the data from [34] (see Fig.…”

Section: Pos(acat)076mentioning

confidence: 99%

The Pluto++ Event Generator.

Froehlich¹

2009

Proceedings of XI International Workshop on Advanced Computing and Analysis Techniques in Physics Research — PoS(ACAT)

View full text Add to dashboard Cite

Pluto is a Monte-Carlo event generator designed for hadronic interactions from Pion production threshold to intermediate energies of a few GeV per nucleon, as well as for studies of heavy ion reactions. The package is entirely based on ROOT, without the need of additional packages, and uses the embedded C++ interpreter of ROOT to control the event production. The generation of events based on a single reaction chain and the storage of the resulting particle objects can be done with a few lines of a ROOT-macro. However, the complete control of the package can be taken over by the steering macro and user-defined models may be added without a recompilation of the framework. Multi-reaction cocktails can be facilitated as well using either mass-dependent or user-defined static branching ratios. The included physics uses resonance production with mass-dependent Breit-Wigner sampling. The calculation of partial and total widths for resonances producing unstable particles is performed recursively in a coupled-channel approach. Here, particular attention is paid to the electromagnetic decays, motivated by the physics program of HADES. The thermal model supports 2-component thermal distributions, longitudinal broadening, radial blast, direct and elliptic flow, and impact-parameter sampled multiplicities. The interface allows angular distribution models (e.g. for the primary meson emission) to be attached by the user as well as descriptions of multi-particle correlations using decay chain templates. The exchange of mass sampling or momentum generation models is also possible. The first feature allows for consistent coupled-channel calculations, needed for a correct description of hadronic interactions. For elementary reactions, angular distribution models for selected channels are already part of the framework, based on parameterizations of existing data. This report gives an overview of the design of the package, the included models and the user interface.

show abstract

Study of the reactionp↑p→pπ+n with polarized beam from 1.18 to 1.98 GeV/c

Cited by 65 publications

References 90 publications

Meson and Di-Electron Production With Hades

Meson and Di-Electron Production With Hades

Spin correlation coefficients in from 325 to 400 MeV

The Pluto++ Event Generator.

Contact Info

Product

Resources

About