Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spectator effects and lifetimes of heavy hadrons   We present a calculation of subleading 1/m_b corrections to spectator effects
in the ratios of beauty hadron lifetimes in heavy-quark expansion. We find that
these effects are sizable and should be taken into account in systematic
analyses of heavy hadron lifetimes. In particular, the inclusion of 1/m_b
corrections brings into agreement the theoretical predictions and experimental
observations of the ratio of lifetimes of \Lambda_b-baryon and B_d meson. We
obtain \tau(B_u)/\tau(B_d) = 1.06 \pm 0.02, \tau(B_s)/\tau(B_d)= 1.00 \pm 0.01,
\tau(\Lambda_b)/\tau(B_d)= 0.86 \pm 0.05.

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The categories of this paper are: chao-dyn
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The categories of this paper are: adap-org
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The categories of this paper are: gr-qc
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
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The categories of this paper are: cond-mat
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The categories of this paper are: atom-ph
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The categories of this paper are: econ
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The categories of this paper are: stat
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The categories of this paper are: eess
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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: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-lat