Antiproton-proton channels in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi>J</mml:mi><mml:mo>/</mml:mo><mml:mi>ψ</mml:mi></mml:mrow></mml:math>decays

Loiseau, B.; Wycech, S.

doi:10.1103/physrevc.72.011001

Cited by 90 publications

(89 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the latter case several explanations have been put forth, including scenarios that invoke NN bound states or so far unobserved meson resonances. However, it was also shown that a conventional but plausible interpretation of the data can be given simply in terms of the final-state interaction (FSI) between the produced proton and antiproton [16,17,18,19,20]. Specifically, calculations of our group, utilizing the Jülich NN model [21,22,23] and performed within the Watson-Migdal approach [24,25], could reproduce the mass dependence of thepp spectrum close to the threshold by the S -wavepp FSI for various decays [16,26,27].…”

Section: Introductionmentioning

confidence: 99%

The electromagnetic form factors of the proton in the timelike region

2014

View full text Add to dashboard Cite

The reactionspp → e + e − and e + e − →pp are analyzed in the near-threshold region. Specific emphasis is put on the role played by the interaction in the initial-or final antinucleon-nucleon (NN) state which is taken into account rigorously. For that purpose a recently publishedNN potential derived within chiral effective field theory and fitted to results of a new partial-wave analysis ofpp scattering data is employed. Our results provide strong support for the conjecture that the pronounced energy dependence of the e + e − ↔pp cross section, seen in pertinent experiments, is primarily due to thepp interaction. Predictions for the proton electromagnetic form factors G E and G M in the timelike region, close to theNN threshold, and for spin-dependent observables are presented. The steep rise of the effective form factor for energies close to thepp threshold is explained solely in terms of thepp interaction. The corresponding experimental information is quantitatively described by our calculation.

show abstract

Section: Introductionmentioning

confidence: 99%

The electromagnetic form factors of the proton in the timelike region

2014

View full text Add to dashboard Cite

show abstract

“…[28], however, the overall sign does not play a role in the observable. Combining Equations (2) and (3), one easily finds…”

Section: Historical Development: Working With Effective Range Expansionmentioning

confidence: 95%

“…Afterwards, many more sophisticated and realistic pp potential models are used to investigate FSI, see e.g., by the Paris potential [28,29], Jülich NN model [30], and the one constructed in consitute quark model [31]. For a review of the pp interaction, see Ref.…”

Section: Historical Development: Working With Effective Range Expansionmentioning

confidence: 99%

“…Note another convention for the sign of scattering length also appears in literature. Then the two-body transition amplitude from the channel i to f can be written as [28] …”

Section: Historical Development: Working With Effective Range Expansionmentioning

confidence: 99%

“…Note In Refs. [28,29,34,35], the scattering length approximation was used, and instead, not the direct T-matrix. Here, we will give a brief review of them and discuss different methods to treat FSI (an alternative one is based on dispersion theory, see e.g., Ref.…”

Section: Historical Development: Working With Effective Range Expansionmentioning

confidence: 99%

See 2 more Smart Citations

Status of X(1835) and pp¯ Interaction from Chiral Symmetry

Liu

Kang

2016

Symmetry

View full text Add to dashboard Cite

Abstract:After the observation of the strong near-threshold enhancement of proton-antiproton mass spectrum in J/ψ → γpp decay, lots of theoretical investigations have been available such as new resonance, the final-state pp interaction (FSI), pp bound state (or baryonium), glueball, or other exotic (tetra-quark) states. Here, we provide a short review on the current status, especially on the pertinent discussions concerning its relation to pp interaction, for which the emphasis is put on the recently constructed chiral potential.

show abstract

Light Hadron Spectroscopy at BESIII

Mori

2020

Recent Progress in Few-Body Physics

View full text Add to dashboard Cite

Antiproton-proton channels inJ/ψdecays

Cited by 90 publications

References 21 publications

The electromagnetic form factors of the proton in the timelike region

The electromagnetic form factors of the proton in the timelike region

Status of X(1835) and pp¯ Interaction from Chiral Symmetry

Light Hadron Spectroscopy at BESIII

Contact Info

Product

Resources

About