Precise calculation of the two-step process for<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mi>K</mml:mi><mml:mo>−</mml:mo></mml:msup><mml:mi>d</mml:mi><mml:mo>→</mml:mo><mml:mi>π</mml:mi><mml:mi>Σ</mml:mi><mml:mi>n</mml:mi></mml:mrow></mml:math>in the<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Λ</mml:mi></mml:math>(1405) resonance region

Miyagawa, K.; Haidenbauer, J.

doi:10.1103/physrevc.85.065201

Cited by 50 publications

(65 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As we can see, there is mounting evidence of a state 1 An experiment along these lines is being proposed for JPARC [31] 2 A recent paper [33] questioned the approach of [30], showing problems with threshold behaviour in [30]. In a reply to that work [34], it was shown that the comments were appropriate under the choice of the kinetic energy for H 0 in the deuteron Hamiltonian H = H 0 + V , but this is not necessary nor convenient in the multiple scattering expansion, and the Watson around 1420 MeV, complementing another state more around 1400 MeV.…”

mentioning

confidence: 99%

Λ(1405)poles obtained fromπ0Σ0photoproduction data

2013

View full text Add to dashboard Cite

We present a strategy to extract the position of the two Λ(1405) poles from experimental photoproduction data measured recently at different energies in the γp → K + π 0 Σ 0 reaction at Jefferson Lab. By means of a chiral dynamics motivated potential but with free parameters, we solve the Bethe Salpeter equation in the coupled channelsKN and πΣ in isospin I=0 and parameterize the amplitude for the photonuclear reaction in terms of a linear combination of the πΣ → πΣ and KN → πΣ scattering amplitudes in I=0, with a different linear combination for each energy. Good fits to the data are obtained with some sets of parameters, by means of which one can also predict the cross section for the K − p → π 0 Σ 0 reaction. These later results help us decide among the possible solutions. The result is that the different solutions lead to two poles similar to those found in the chiral unitary approach. With the best result we find the two Λ(1405) poles at 1385 − 68i MeV and 1419 − 22i MeV.

show abstract

mentioning

confidence: 99%

Λ(1405)poles obtained fromπ0Σ0photoproduction data

2013

View full text Add to dashboard Cite

show abstract

“…The issues raised in Ref. [26] were addressed in detail in Ref. [27] reconfirming the findings of Ref.…”

Section: Introductionmentioning

confidence: 83%

Antineutrino inducedΛ(1405)production off the proton

et al. 2015

View full text Add to dashboard Cite

We have studied the strangeness changing antineutrino induced reactionsν l p → l + φB, with φB = K − p,, using a chiral unitary approach. These ten coupled channels are allowed to interact strongly, using a kernel derived from the chiral Lagrangians. This interaction generates two Λ(1405) poles, leading to a clear single peak in the πΣ invariant mass distributions. At backward scattering angles in the center of mass frame,νµp → µ + π 0 Σ 0 is dominated by the Λ(1405) state at around 1420 MeV while the lighter state becomes relevant as the angle decreases, leading to an asymmetric line shape. In addition, there are substantial differences in the shape of πΣ invariant mass distributions for the three charge channels. If observed, these differences would provide valuable information on a claimed isospin I = 1, strangeness S = −1 baryonic state around 1400 MeV. Integrated cross sections have been obtained for the πΣ andKN channels, investigating the impact of unitarization in the results. The number of events with Λ(1405) excitation inνµp collisions in the recent antineutrino run at the MINERνA experiment has also been obtained. We find that this reaction channel is relevant enough to be investigated experimentally and to be taken into account in the simulation models of future experiments with antineutrino beams.

show abstract

“…The work of [12] has been discussed in [13] for forward neutron angles, questioning the approach of [12]. Yet, in [14] the issue has been clarified, showing that in [13] the NN potential is omitted.…”

Section: -P2mentioning

confidence: 99%

“…Yet, in [14] the issue has been clarified, showing that in [13] the NN potential is omitted. In addition the spikes shown in [13], tied to the neglect of the NN potential, disappear in any case when the experimental resolution is considered and then the remaining broader peak is tied to the Λ(1405) production both if one uses the approach of [12] or [13].…”

Section: -P2mentioning

confidence: 99%

Kaonic systems

Oset¹

2012

EPJ Web of Conferences

View full text Add to dashboard Cite

Abstract. I make a short review of the situation of the kaonic systems, with novel information supporting the two Λ(1405) states from the K − d → nπΣ reaction. A review is made of theKNN system with recent calculations converging to smaller bindings and larger widths. Novel systems involving two kaons and one nucleon or three kaons are also reported and finally a short discussion is made of the analogous state DNN for which recent studies find a large binding and a small width.

show abstract

Precise calculation of the two-step process forK−d→πΣnin theΛ(1405) resonance region

Cited by 50 publications

References 30 publications

Λ(1405)poles obtained fromπ0Σ0photoproduction data

Λ(1405)poles obtained fromπ0Σ0photoproduction data

Antineutrino inducedΛ(1405)production off the proton

Kaonic systems

Contact Info

Product

Resources

About