Erratum to “Weak decay of Λ hypernuclei: quark versus mesons” [Nucl. Phys. A 669 (2000) 331–350]

Sasaki, Kenji; Inoue, Takashi; Oka, M.

doi:10.1016/s0375-9474(00)00356-0

Cited by 67 publications

(130 citation statements)

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“…The values reported by the former experiments, even though with large errors, were close to or larger than one, whereas the simple one-pion exchange model with ∆I=1/2 rule foresaw values one order of magnitude lower. In [8] a value of about 0.5 was measured in agreement with recent theoretical values obtained with improved one-meson exchange models [10] and direct-quark exchange mechanism [11]. Quite recent review articles on the subject are due to Outa [12] for the experimental aspects and to Alberico and Garbarino [13] for the theoretical approaches.…”

supporting

confidence: 70%

Measurement of the proton spectra from non-mesonic weak decay of 5ΛHe, 7ΛLi and 12ΛC

et al. 2008

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The results of a measurement of the proton spectra following the Non-Mesonic Weak Decay of 5 Λ He, 7 Λ Li and 12 Λ C are presented and discussed. The experiment was performed at the (e + e − ) collider DAΦNE at Laboratori Nazionale di Frascati of INFN.It is the first measurement for 7 Λ Li, and for all the spectra the lower limit on the energy of the protons is 15 MeV, never reached before. All the spectra show a similar shape, namely a peak at around 80 MeV as expected for the free Λp → np weak reaction, with a low energy rise that should be due to Final State Interactions and/or two-nucleon induced weak processes. The decay spectrum of 5 Λ He is somehow similar to the ones reported by previous measurements and theoretical calculations, but the same doesn't happen for the 12 Λ C one.

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supporting

confidence: 70%

Measurement of the proton spectra from non-mesonic weak decay of 5ΛHe, 7ΛLi and 12ΛC

et al. 2008

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“…The explicit forms of f i , g i , and h i are given in ref. (4), and the coefficients, V k i , for the ΛΛ → Y N transitions are listed in Table 2.…”

Section: Transition Potentialmentioning

confidence: 99%

The ΛΛ→YN weak transition in double-Λ hypernuclei

2003

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We calculate the ΛΛ → Y N transition rate of 6 ΛΛ He by the hybrid picture, the π and K exchanges plus the direct quark processes. It is found that the hyperon-induced decay is weaker than the nucleon-induced decay, but the former may reveal the short-range mechanism of the weak transition and also give a clear signal of the strong ∆I = 3/2 transition. The ΛΛ → YN transition in double-Λ hypernucleus is complement to the ΛN → N N transition as it occurs only in the J = 0 channel, while the J = 1 transition is dominant in the ΛN → N N case.

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“…In the evaluation of Γ N M , and the corresponding spectra, are used the Shell Model (SM) and the Fermi Gas Model (FGM) for Γ 1 (within the two-particle phase space) [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][20][21][22][23], while for Γ 2 (within the three-particle phase space) only the later model has been employed so far [20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Nonmesonic Weak Decay Spectra of Light Hypernuclei

Krmpotić

2014

Few-Body Syst

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The nonmesonic weak decay spectra of light hypernuclei have been evaluated in a systematic way. As theoretical framework we adopt the independent particle shell model with three different one-meson-exchange transition potentials. Good agreement with data is obtained for proton and neutron kinetic energy spectra of 4 Λ He, and 5 Λ He, when the recoil effect is considered. The coincidence spectra of proton-neutron pairs are also accounted for quite reasonably, but it was not possible to reproduce the data for the neutron-neutron pair spectra. It is suggested that the π + K meson-exchange model with soft monopole form factors could be a good starting point for describing the dynamics responsible for the decays of these two hypernuclei. The 4 Λ H spectra are also presented.

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Erratum to “Weak decay of Λ hypernuclei: quark versus mesons” [Nucl. Phys. A 669 (2000) 331–350]

Cited by 67 publications

References 0 publications

Measurement of the proton spectra from non-mesonic weak decay of 5ΛHe, 7ΛLi and 12ΛC

Measurement of the proton spectra from non-mesonic weak decay of 5ΛHe, 7ΛLi and 12ΛC

The ΛΛ→YN weak transition in double-Λ hypernuclei

Nonmesonic Weak Decay Spectra of Light Hypernuclei

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