Evidence for a<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>π</mml:mi><mml:mo>−</mml:mo><mml:mi>π</mml:mi></mml:math>Resonance in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>I</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn><mml:mn /></mml:math>,<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>J</mml:mi><mml:mo>=</mml:mo><mml:mn>1</mml:mn><mml:mn /></mml:math>State

Erwin, A. R.; March, R.; Walker, W. D.; West, E.

doi:10.1103/physrevlett.6.628

Cited by 232 publications

(45 citation statements)

References 12 publications

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“…3 One-pion-exchange model A successful description of the available data [24][25][26][27][28][29][30][31][32][33] on charge-exchange processes (p → n) in hadron-hadron interactions has been obtained using the exchange of virtual particles with the quantum numbers of the π, ρ, and a 2 mesons [13-17, 20, 21]. In such processes, the pion, due to its small mass, dominates the p → n transition amplitude, with its relative contribution increasing as |t| decreases.…”

Section: Kinematics and Cross Sectionsmentioning

confidence: 99%

“…The t dependence of F π 2 is absorbed into the flux factor that describes the hadronic chargeexchange data [24][25][26][27][28][29][30][31][32][33]; the structure function of the real pion is then given by…”

Section: Ln(4)mentioning

confidence: 99%

“…Some theoretical models retain the QCD building blocks, quarks and gluons, as fundamental entities but add non-perturbative elements, such as soft color interactions [12]. Another approach interprets the production of forward baryons in terms of the exchange of virtual particles [13][14][15][16][17][18][19][20][21][22][23], which accounts for charge-exchange processes (p → n) in hadronic interactions [24][25][26][27][28][29][30][31][32][33]. In leading neutron production, the large diffractive peak in the cross section, which is observed in leading proton production [4,5], is absent.…”

Section: Introductionmentioning

confidence: 99%

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Leading neutron production in e+p collisions at HERA

Chekanov¹,

Krakauer²,

Magill³

et al. 2002

Nuclear Physics B

105

166

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The production of neutrons carrying at least 20% of the proton beam energy (x L > 0.2) in e + p collisions has been studied with the ZEUS detector at HERA for a wide range of Q 2 , the photon virtuality, from photoproduction to deep inelastic scattering. The neutron-tagged cross section, ep → e ′ Xn, is measured relative to the inclusive cross section, ep → e ′ X, thereby reducing the systematic uncertainties. For x L > 0.3, the rate of neutrons in photoproduction is about half of that measured in hadroproduction, which constitutes a clear breaking of factorisation. There is about a 20% rise in the neutron rate between photoproduction and deep inelastic scattering, which may be attributed to absorptive rescattering in the γp system. or 0.64 < x L < 0.82, the rate of neutrons is almost independent of the Bjorken scaling variable x and Q 2 . However, at lower and higher x L values, there is a clear but weak dependence on these variables, thus demonstrating the breaking of limiting fragmentation. The neutron-tagged structure function, F

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Section: Kinematics and Cross Sectionsmentioning

confidence: 99%

Section: Ln(4)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Leading neutron production in e+p collisions at HERA

Chekanov¹,

Krakauer²,

Magill³

et al. 2002

Nuclear Physics B

105

166

View full text Add to dashboard Cite

show abstract

“…Historically, the experimental discovery of heavy mesons [5] in the early 1960s saved the situation. The one-boson-exchange (OBE) model [6][7][8][9][10][11] emerged, which still today is the most economical and quantitative phenomenology for describing the N N interaction [12][13][14].…”

Section: Introduction and Historical Perspectivementioning

confidence: 99%

Chiral effective field theory and nuclear forces

2011

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“…[3][4] That long-awaited breakthrough was welcomed enthusiastically and is now generally considered to be the correct way forward. Prior to the introduction of QCD, theories centered around Yukawa's 1935 meson theory [5] and pion exchange, then in the 1960s, the discovery of heavy mesons [6][7] led to the one-boson exchange models. [8][9] Both are still employed to supplement QCD in models of the nuclear force, but it remains a challenge after 75 years.…”

mentioning

confidence: 99%

On the W-boson NN interaction and the extended cluster model of the nucleus.

Fimmel¹

2009

phys essays

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The problem of the nuclear interaction is analyzed ab initio, using a physical model of low-energy nuclear phenomena rather than the usual approach of mathematical theory and nuclear parameters. The interaction model is an extension of the fully discrete model of the electron, derived from the Dirac equation. Here we show that a nuclear bond, mediated by the W -boson, evolves naturally in a discrete physical model of the nucleon, in a framework of direct interparticle action. The new model naturally accounts for the uniquely stable two-, three-and four-body bound states, the abolition of free neutron ß-decay by the deuteron bond, 3 H and 3 He particle-stability and 3 H ß-instability.The model is qualitative and radical, and is supported by its congruence with light nuclear phenomena in the low-energy regime.

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Evidence for aπ−πResonance in theI=1,J=1State

Cited by 232 publications

References 12 publications

Leading neutron production in e+p collisions at HERA

Leading neutron production in e+p collisions at HERA

Chiral effective field theory and nuclear forces

On the W-boson NN interaction and the extended cluster model of the nucleus.

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