Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Non-Mesonic Weak Decay of Lambda-hypernuclei: a new determination of the
  Gn/Gp ratio   Theoretical descriptions of the non-mesonic weak decay of Lambda-hypernuclei
are unable to reproduce the experimental values of the ratio Gn/Gp=G(Lambda n
-> nn)/G(Lambda p -> np). In this contribution we discuss a new approach to
this problem. We have incorporated a one-meson-exchange model for the Lambda N
-> nN transition in finite nuclei in an intranuclear cascade code for the
calculation of double-coincidence nucleon distributions corresponding to the
non-mesonic decay of 5_Lambda-He and 12_Lambda-C. The two-nucleon induced decay
mechanism, Lambda np -> nnp, has been taken into account within a local density
approximation scheme using a one-pion-exchange model supplemented by short
range correlations. A weak decay model independent analysis of preliminary KEK
coincidence data for 5_Lambda-He allows us to extract Gn/Gp=0.39 \pm 0.11 when
the two-nucleon induced channel is neglected (i.e., G2=0) and Gn/Gp=0.26 \pm
0.11 when G2/G1=0.2.

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The categories of this paper are: q-fin
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The categories of this paper are: econ
31
The categories of this paper are: ao-sci
8
The categories of this paper are: hep-ex
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The categories of this paper are: bayes-an
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The categories of this paper are: funct-an
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The categories of this paper are: patt-sol
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The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
33
The categories of this paper are: plasm-ph
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The categories of this paper are: eess
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The categories of this paper are: solv-int
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The categories of this paper are: gr-qc
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The categories of this paper are: hep-lat
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The categories of this paper are: acc-phys
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The categories of this paper are: astro-ph