Neutron and proton energy spectra from the non-mesonic weak decays of <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mmultiscripts><mml:mi mathvariant="normal">He</mml:mi><mml:mprescripts/><mml:mi>Λ</mml:mi><mml:mn>5</mml:mn></mml:mmultiscripts></mml:math> and <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si2.gif" overflow="scroll"><mml:mmultiscripts><mml:mi mathvariant="normal">C</mml:mi><mml:mprescripts/><mml:mi>Λ</mml:mi><mml:mn>12</mm

Okada, S.; Ajimura, S.; Aoki, Katsumi; Banu, A.; Bhang, H.; Fukuda, T.; Hashimoto, Osamu; Hwang, J. I.; Kameoka, S.; Kang, B. H.; Kim, E.H.; Kim, J.H.; Kim, M.J.; Maruta, T.; Miura, Y.; Miyake, Yasuhiro; Nagae, T.; Nakamura, Makoto; Nakamura, S. N.; Noumi, H.; Okayasu, Y.; Outa, H.; Park, H.; Saha, Pranab; Sato, Y.; Sekimoto, M.; Takahashi, Toshiya; Tamura, H.; Tanida, K.; Toyoda, A.; Tsukada, K.; Watanabe, T.; Yim, H.

doi:10.1016/j.physletb.2004.07.031

Cited by 54 publications

(33 citation statements)

References 22 publications

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“…As mentioned in the Introduction, proton spectra from NMWD of 5 Λ He and 12 Λ C were already studied experimentally [2,3,6,7] and theoretically [10,13,14,22]. fig.4c, show a similar shape, i.e.…”

Section: Discussion Of Results and Conclusionmentioning

confidence: 90%

“…We underline the fact that we could safely use the very simple relationship (4) for the evaluation of R p thanks to the use of very thin targets and of a transparent detector. On the contrary, in previous experiments [2,3,6,7] thick targets were used to improve the statistics with the consequence that many corrections had to be applied. The results are reported in Table 1.…”

Section: Discussion Of Results and Conclusionmentioning

confidence: 99%

“…The subtraction of the two nucleon absorption mechanism for 6 Li cannot be done satisfactorily by using the model valid for the other nuclei. Indeed it is well known that in many reactions 6 Li behaves like an (α+d) molecule, and this cluster substructure has to be taken into account in the simulation.…”

Section: Fig1 Shows the Inclusive πmentioning

confidence: 99%

“…Indeed it is well known that in many reactions 6 Li behaves like an (α+d) molecule, and this cluster substructure has to be taken into account in the simulation. We verified this feature in a previous work [19] and we modeled the K − (np) absorption process taking into account the momentum distribution of the deuteron inside 6 Li taken from [20] A closer inspection of the π − momentum spectrum observed for 7 Li with a proton coincidence shows a hint for a peak, centered around 269 MeV/c, i.e. 6 MeV/c below the π − peak corresponding to the 7 Λ Li formation, and labeled by the black area in the inset of Fig.2b.…”

Section: Fig1 Shows the Inclusive πmentioning

confidence: 99%

“…However, the largest amount of data on NMWD was produced by the SKS Collaboration at KEK. The (π + ,K + ) reaction was used to produce abundantly Hypernuclei in their ground state, identified by the SKS spectrometer [4,5,6,7,8,9].…”

mentioning

confidence: 99%

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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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