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Two-Baryon Correlation Functions in 2-flavour QCD · Around

2013

Two-Baryon Correlation Functions in 2-flavour QCD

Francis, Anthony, Miao, Chuan, Rae, Thomas D. et al.

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We present first results for two-baryon correlation functions, computed using $N_f=2$ flavours of O($a$) improved Wilson quarks, with the aim of explaining potential dibaryon bound states, specifically the H-dibaryon.

In particular, we use a GEVP to isolate the groundstate using two-baryon (hyperon-hyperon) correlation functions $\big(\langle C_{XY}(t)C_{XY}(0) \rangle$, where $XY=\Lambda\Lambda, \Sigma\Sigma, N\Xi, \cdots\big)$, each of which has an overlap with the H-dibaryon.
We employ a `blocking' algorithm to handle the large number of contractions, which may easily be extended to N-baryon correlation functions.
We also comment on its application to the analysis of single baryon masses ($n$, $\Lambda$, $\Xi$, $\cdots$).

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