Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Low-Energy $\Lambda-\p$ Scattering Parameters from the $pp \to
  pK^+\Lambda$ Reaction   Constraints on the spin-averaged $\Lambda p$ scattering length and effective
range have been obtained from measurements of the $pp\to pK^+\Lambda$ reaction
close to the production threshold by comparing model phase-space Dalitz plot
occupations with experimental ones. The data fix well the position of the
virtual bound state in the $\Lambda p$ system. Combining this with information
from elastic $\Lambda p$ scattering measurements at slightly higher energies,
together with the fact that the hyperdeuteron is not bound, leads to a new
determination of the low energy $\Lambda p$ scattering parameters.

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The categories of this paper are: atom-ph
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The categories of this paper are: plasm-ph
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The categories of this paper are: comp-gas
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The categories of this paper are: acc-phys
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The categories of this paper are: patt-sol
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The categories of this paper are: solv-int
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The categories of this paper are: cmp-lg
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The categories of this paper are: ao-sci
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The categories of this paper are: funct-an
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The categories of this paper are: mtrl-th
8
The categories of this paper are: hep-ex
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The categories of this paper are: q-alg
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The categories of this paper are: eess
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The categories of this paper are: hep-th
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The categories of this paper are: quant-ph
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The categories of this paper are: stat