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BARYON NUMBER

$\Gamma\mathrm {({{\mathit Z}} \rightarrow {{\mathit p}} {{\mathit \mu}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.8\times 10^{-6}$ CL=95.0%

$\Gamma\mathrm {({{\mathit Z}} \rightarrow {{\mathit p}} {{\mathit e}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.8\times 10^{-6}$ CL=95.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit e}^{-}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.8\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit e}^{+}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2.0\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit e}^{+}} {{\mathit e}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3.0\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\mathit p}} {{\mathit e}^{-}} {{\mathit e}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3.0\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit \mu}^{+}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.8\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\mathit p}} {{\mathit \mu}^{-}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<4.0\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit \Lambda}}} {{\mathit \pi}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<4.3\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\mathit \Lambda}} {{\mathit \pi}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<4.7\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit \pi}^{0}} {{\mathit \eta}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2.7\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}}2 {{\mathit \pi}^{0}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3.3\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit \eta}})}$ $/$ $\Gamma\mathrm {(total)}$

$<8.9\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit \pi}^{0}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.5\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \tau}^{-}} \rightarrow {{\overline{\mathit p}}} {{\mathit \gamma}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3.5\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{+}} \rightarrow {{\overline{\mathit \Sigma}}^{0}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.3\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{+}} \rightarrow {{\mathit \Sigma}^{0}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.7\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{+}} \rightarrow {{\overline{\mathit \Lambda}}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6.5\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{+}} \rightarrow {{\mathit \Lambda}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.1\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{0}} \rightarrow {{\overline{\mathit p}}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6.3\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{0}} \rightarrow {{\mathit p}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<5.1\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{0}} \rightarrow {{\overline{\mathit p}}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6.9\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit D}^{0}} \rightarrow {{\mathit p}} {{\mathit e}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<5.5\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{+}} \rightarrow {{\overline{\mathit \Lambda}}^{0}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<8\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{+}} \rightarrow {{\overline{\mathit \Lambda}}^{0}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{+}} \rightarrow {{\mathit \Lambda}^{0}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3.2\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{+}} \rightarrow {{\mathit \Lambda}^{0}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{0}} \rightarrow {{\mathit p}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2.6\times 10^{-9}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{0}} \rightarrow {{\mathit \Lambda}_{{{c}}}^{+}} {{\mathit e}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<4\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}^{0}} \rightarrow {{\mathit \Lambda}_{{{c}}}^{+}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.4\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit B}_{{{s}}}^{0}} \rightarrow {{\mathit p}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.21\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {({{\mathit J / \psi}{(1S)}} \rightarrow {{\mathit p}} {{\mathit e}^{-}} + c.c.)}$ $/$ $\Gamma\mathrm {(total)}$

$<3.1\times 10^{-8}$ CL=90.0%

${{\mathit p}}$ mean life

$>9 \times 10^{29}$ years CL=90.0%

$\Gamma\mathrm {({{\mathit N}} \rightarrow {{\mathit \mu}^{+}} {{\mathit K}})}$ $/$ $\Gamma\mathrm {(total)}$

$>26$ (${{\mathit n}}$), $>4500$ (${{\mathit p}}$) CL=90.0%

$\Gamma\mathrm {({{\mathit N}} \rightarrow {{\mathit e}^{+}} {{\mathit K}})}$ $/$ $\Gamma\mathrm {(total)}$

$>17$ (${{\mathit n}}$), $>1000$ (${{\mathit p}}$) CL=90.0%

$\Gamma\mathrm {({{\mathit N}} \rightarrow {{\mathit \mu}^{+}} {{\mathit \pi}})}$ $/$ $\Gamma\mathrm {(total)}$

$>3500$ (${{\mathit n}}$), $>16000$ (${{\mathit p}}$) CL=90.0%

A few examples of proton or bound neutron decay follow. For limits on many other nucleon decay channels, see the Baryon Summary Table.

$\Gamma\mathrm {({{\mathit N}} \rightarrow {{\mathit e}^{+}} {{\mathit \pi}})}$ $/$ $\Gamma\mathrm {(total)}$

$>5300$ (${{\mathit n}}$), $>24000$ (${{\mathit p}}$) CL=90.0%

Mean ${{\mathit n}}{{\overline{\mathit n}}}$-oscillation time (free ${{\mathit n}}$)

$>8.6 \times 10^{7}$ s CL=90.0%

Mean ${{\mathit n}}{{\overline{\mathit n}}}$-oscillation time (bound ${{\mathit n}}$)

$>4.7 \times 10^{8}$ s CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\overline{\mathit p}}} {{\mathit \pi}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<9\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit K}_S^0} {{\mathit \nu}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit K}^{-}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit K}^{-}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit K}^{+}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<3\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit K}^{+}} {{\mathit e}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit \pi}^{-}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit \pi}^{-}} {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<4\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit \pi}^{+}} {{\mathit \mu}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}} \rightarrow {{\mathit \pi}^{+}} {{\mathit e}^{-}})}$ $/$ $\Gamma\mathrm {(total)}$

$<6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}_{{{c}}}^{+}} \rightarrow {{\overline{\mathit p}}} {{\mathit e}^{+}} {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<1.6\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}_{{{c}}}^{+}} \rightarrow {{\overline{\mathit p}}}2 {{\mathit \mu}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<9.4\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {({{\mathit \Lambda}_{{{c}}}^{+}} \rightarrow {{\overline{\mathit p}}}2 {{\mathit e}^{+}})}$ $/$ $\Gamma\mathrm {(total)}$

$<2.7\times 10^{-6}$ CL=90.0%

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