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Experimental Status

Experimental Status. K + p + p - e + n e. a 0 = 0.28 + 0.05. Rosselet et al., (1977). using Roy eqn. & ratio a 0 /a 2 from ChPT: a 0 = 0.216 + 0.013(stat) + 0.004(sys) + 0.005(theo). Pislak et al., BNL - E865 (2001). using Roy eqn. & ratio a 0 /a 2 (universal curve):

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Experimental Status

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  1. Experimental Status K+p+p-e+ne a0 = 0.28 + 0.05 Rosselet et al., (1977) using Roy eqn. & ratio a0/a2 from ChPT: a0 = 0.216 + 0.013(stat) + 0.004(sys) + 0.005(theo) Pislak et al., BNL - E865 (2001) using Roy eqn. & ratio a0/a2 (universal curve): a0 = 0.228 + 0.012(stat) + 0.004(sys) +0.006 -0.012 using Roy eqn. & ratio a0/a2 from ChPT: a0 = 0.221 + 0.026 (95% c.l.) a0 = 0.220 + 0.005 (2-loop ChPT) Colangelo, Gasser, Leutwyler (2001) l3 M2 = (mu + md) B Mp2 = M2 M4 B = |<0|uu|0>| / Fp2 mu, md 0 32p2F2 94%

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