pdgLive

LEPTON FAMILY NUMBER
Lepton family number conservation means separate conservation of each of $\mathit L_{{{\mathit e}} }$, $\mathit L_{{{\mathit \mu}} }$, $\mathit L_{{{\mathit \tau}} }$.

$\Gamma\mathrm {( {{\mathit Z}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<6.5\times 10^{-6}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit Z}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<5.0\times 10^{-6}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit Z}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.5\times 10^{-7}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit H}^{0}} \rightarrow {{\mathit e}} {{\mathit \tau}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<2.2\times 10^{-3}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit H}^{0}} \rightarrow {{\mathit e}} {{\mathit \mu}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<6.1\times 10^{-5}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit H}^{0}} \rightarrow {{\mathit \mu}} {{\mathit \tau}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.5\times 10^{-3}$ CL=95.0%

${\mathit \sigma (}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit e}^{\pm}}{{\mathit \tau}^{\mp}}{)}$ $/$ ${\mathit \sigma (}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{)}$

$<8.9 \times 10^{-6}$ CL=95.0%

${\mathit \sigma (}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{\pm}}{{\mathit \tau}^{\mp}}{)}$ $/$ ${\mathit \sigma (}$ ${{\mathit e}^{+}}$ ${{\mathit e}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}{)}$

$<4.0 \times 10^{-6}$ CL=95.0%

limit on ${{\mathit \mu}^{-}}$ $\rightarrow$ ${{\mathit e}^{-}}$ conversion

${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{32}\mathrm {S}$ $\rightarrow$ ${{\mathit e}^{-}}{}^{32}\mathrm {S}{)}$ / ${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{32}\mathrm {S}$ $\rightarrow$ ${{\mathit \nu}_{{\mu}}}{}^{32}\mathrm {P}^{*}{)}$

$<7 \times 10^{-11}$ CL=90.0%

${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{}\mathrm {Ti}$ $\rightarrow$ ${{\mathit e}^{-}}{}^{}\mathrm {Ti}{)}$ / ${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{}\mathrm {Ti}$ $\rightarrow$ capture${)}$

$<4.3 \times 10^{-12}$ CL=90.0%

${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{}\mathrm {Pb}$ $\rightarrow$ ${{\mathit e}^{-}}{}^{}\mathrm {Pb}{)}$ / ${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{}\mathrm {Pb}$ $\rightarrow$ capture${)}$

$<4.6 \times 10^{-11}$ CL=90.0%

${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{}\mathrm {Au}$ $\rightarrow$ ${{\mathit e}^{-}}{}^{}\mathrm {Au}{)}$ / ${\mathit \sigma (}$ ${{\mathit \mu}^{-}}$ ${}^{}\mathrm {Au}$ $\rightarrow$ capture${)}$

$<7 \times 10^{-13}$ CL=90.0%

$\mathit R_{\mathit g}$ = $\mathit G_{\mathit C}$ $/$ $\mathit G_{\mathit F}$

$<0.0030$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \mu}^{-}} \rightarrow {{\mathit e}^{-}}2 {{\mathit \gamma}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.2\times 10^{-11}$ CL=90.0%

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

$<1.0\times 10^{-12}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \mu}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit \gamma}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.2\times 10^{-13}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \mu}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit \nu}_{{e}}} {{\overline{\mathit \nu}}_{{\mu}}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.2\%$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit \mu}^{-}} {{\mathit f}_{{0}}{(980)}} \rightarrow {{\mathit \mu}^{-}} {{\mathit \pi}^{+}} {{\mathit \pi}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.4\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit f}_{{0}}{(980)}} \rightarrow {{\mathit e}^{-}} {{\mathit \pi}^{+}} {{\mathit \pi}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

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

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

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

$<4.8\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit \mu}^{-}} {{\mathit \eta}^{\,'}{(958)}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.3\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit \eta}^{\,'}{(958)}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit \mu}^{-}} {{\mathit K}_S^0} {{\mathit K}_S^0} )}$ $/$ $\Gamma\mathrm {(total)}$

$<8.0\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit K}_S^0} {{\mathit K}_S^0} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.1\times 10^{-8}$ CL=90.0%

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

$<8.4\times 10^{-8}$ CL=90.0%

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

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

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

$<4.4\times 10^{-8}$ CL=90.0%

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

$<3.4\times 10^{-8}$ CL=90.0%

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

$<2.2\times 10^{-5}$ CL=90.0%

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

$<2.4\times 10^{-5}$ CL=90.0%

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

$<6.0\times 10^{-5}$ CL=90.0%

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

$<3.5\times 10^{-5}$ CL=90.0%

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

$<1.4\times 10^{-5}$ CL=90.0%

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

$<6.5\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit \mu}^{-}} {{\overline{\mathit K}}^{*}{(892)}^{0}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.0\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit e}^{-}} {{\overline{\mathit K}}^{*}{(892)}^{0}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.4\times 10^{-8}$ CL=90.0%

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

$<6.5\times 10^{-8}$ CL=90.0%

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

$<5\times 10^{-3}$ CL=95.0%

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

$<2.7\times 10^{-3}$ CL=95.0%

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

$<4.5\times 10^{-8}$ CL=90.0%

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

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

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

$<9.2\times 10^{-8}$ CL=90.0%

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

$<1.5\times 10^{-8}$ CL=90.0%

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

$<1.7\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit \mu}^{-}} {{\mathit K}^{*}{(892)}^{0}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<5.9\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit K}^{*}{(892)}^{0}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

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

$<8.6\times 10^{-8}$ CL=90.0%

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

$<3.7\times 10^{-8}$ CL=90.0%

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

$<2.1\times 10^{-8}$ CL=90.0%

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

$<2.3\times 10^{-8}$ CL=90.0%

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

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

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

$<1.2\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit e}^{-}} {{\mathit K}_S^0} )}$ $/$ $\Gamma\mathrm {(total)}$

$<2.6\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \tau}^{-}} \rightarrow {{\mathit \mu}^{-}} {{\mathit K}_S^0} )}$ $/$ $\Gamma\mathrm {(total)}$

$<2.3\times 10^{-8}$ CL=90.0%

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

$<8.0\times 10^{-8}$ CL=90.0%

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

$<1.1\times 10^{-7}$ CL=90.0%

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

$<2.7\times 10^{-8}$ CL=90.0%

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

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

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

$<2.7\times 10^{-8}$ CL=90.0%

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

$<2.1\times 10^{-8}$ CL=90.0%

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

$<3.3\times 10^{-8}$ CL=90.0%

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

$<4.2\times 10^{-8}$ CL=90.0%

$\mathbf {\text{LEPTON FAMILY NUMBER VIOLATION IN NEUTRINOS}}$

sin$^2(\theta _{12})$

$0.307$ $\pm0.013$

$\Delta $m${}^{2}_{21}$

($7.53$ $\pm0.18$) $ \times 10^{-5}$ eV${}^{2}$

sin$^2(\theta _{23})$ (Normal order)

$0.546$ $\pm0.021$

$\Delta $m${}^{2}_{32}$ (Inverted order)

$0.002453$ $\pm0.000033$ eV${}^{2}$

$\Delta $m${}^{2}_{32}$ (Normal order)

$0.002453$ $\pm0.000033$ eV${}^{2}$

sin$^2(\theta _{13})$

$0.0220$ $\pm0.0007$

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

$<1.6\times 10^{-6}$ CL=90.0%

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

$<8.0\times 10^{-3}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \pi}^{0}} \rightarrow {{\mathit \mu}^{-}} {{\mathit e}^{+}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

$\Gamma\mathrm {( {{\mathit \pi}^{0}} \rightarrow {{\mathit \mu}^{+}} {{\mathit e}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.8\times 10^{-10}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \pi}^{0}} \rightarrow {{\mathit \mu}^{+}} {{\mathit e}^{-}} {+} {{\mathit \mu}^{-}} {{\mathit e}^{+}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.6\times 10^{-10}$ CL=90.0%

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

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

$\Gamma\mathrm {( {{\mathit \eta}^{\,'}{(958)}} \rightarrow {{\mathit e}} {{\mathit \mu}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.7\times 10^{-4}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \phi}{(1020)}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

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

$<4\times 10^{-3}$ CL=90.0%

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

$<2.1\times 10^{-8}$ CL=90.0%

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

$<1.3\times 10^{-11}$ CL=90.0%

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

$<6.6\times 10^{-11}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit K}_L^0} \rightarrow {{\mathit \pi}^{0}} {{\mathit \pi}^{0}} {{\mathit \mu}^{\pm}} {{\mathit e}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

$\Gamma\mathrm {( {{\mathit K}_L^0} \rightarrow {{\mathit \pi}^{0}} {{\mathit \mu}^{\pm}} {{\mathit e}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.6\times 10^{-11}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit K}_L^0} \rightarrow {{\mathit e}^{\pm}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.12\times 10^{-11}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit K}_L^0} \rightarrow {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.7\times 10^{-12}$ CL=90.0%

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

$<1.0\times 10^{-7}$ CL=90.0%

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

$<7.5\times 10^{-8}$ CL=90.0%

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

$<2.2\times 10^{-7}$ CL=90.0%

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

$<2.1\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit K}^{-}} {{\mathit K}^{+}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.00\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit K}^{-}} {{\mathit \pi}^{+}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.90\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \pi}^{+}} {{\mathit \pi}^{-}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.71\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\overline{\mathit K}}^{*}{(892)}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.25\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\overline{\mathit K}}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.74\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \phi}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \omega}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.71\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \rho}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<5.0\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \eta}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<2.25\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \pi}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<8.0\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}^{0}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit e}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.3\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}_{{s}}^{+}} \rightarrow {{\mathit K}^{+}} {{\mathit e}^{-}} {{\mathit \mu}^{+}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<5.6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}_{{s}}^{+}} \rightarrow {{\mathit K}^{+}} {{\mathit e}^{+}} {{\mathit \mu}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.9\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}_{{s}}^{+}} \rightarrow {{\mathit \pi}^{+}} {{\mathit e}^{-}} {{\mathit \mu}^{+}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<9.4\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit D}_{{s}}^{+}} \rightarrow {{\mathit \pi}^{+}} {{\mathit e}^{+}} {{\mathit \mu}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

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

$<2.8\times 10^{-5}$ CL=90.0%

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

$<4.5\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit K}^{+}} {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.0\times 10^{-5}$ CL=90.0%

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

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

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

$<4.3\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit \pi}^{+}} {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.2\times 10^{-5}$ CL=90.0%

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

$<4.5\times 10^{-5}$ CL=90.0%

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

$<6.2\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit \pi}^{+}} {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.5\times 10^{-5}$ CL=90.0%

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

$<2.0\times 10^{-5}$ CL=90.0%

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

$<7.4\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit K}^{+}} {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.8\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit \pi}^{+}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.7\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit K}^{*}{(892)}^{+}} {{\mathit e}^{-}} {{\mathit \mu}^{+}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<9.9\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit K}^{*}{(892)}^{+}} {{\mathit e}^{+}} {{\mathit \mu}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit K}^{+}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<9.1\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{+}} \rightarrow {{\mathit K}^{*}{(892)}^{+}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

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

$<6.4\times 10^{-9}$ CL=90.0%

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

$<7.0\times 10^{-9}$ CL=90.0%

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

$<6.4\times 10^{-3}$ CL=90.0%

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

$<6.4\times 10^{-3}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit \pi}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.4\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit K}^{*}{(892)}^{0}} {{\mathit e}^{-}} {{\mathit \mu}^{+}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.2\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit K}^{*}{(892)}^{0}} {{\mathit e}^{+}} {{\mathit \mu}^{-}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit K}^{*}{(892)}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.8\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit K}^{0}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.8\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.4\times 10^{-5}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

$\Gamma\mathrm {( {{\mathit B}^{0}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.0\times 10^{-9}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}} \rightarrow {{\mathit \rho}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.2\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}} \rightarrow {{\mathit \pi}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<9.2\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}} \rightarrow {{\mathit K}^{*}{(892)}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

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

$\Gamma\mathrm {( {{\mathit B}} \rightarrow {{\mathit K}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.8\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}} \rightarrow {{\mathit s}} {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<2.2\times 10^{-5}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit B}_{{s}}^{0}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.2\times 10^{-5}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit B}_{{s}}^{0}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<5.4\times 10^{-9}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit J / \psi}{(1S)}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<2.0\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit J / \psi}{(1S)}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<7.5\times 10^{-8}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit J / \psi}{(1S)}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \mu}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<1.6\times 10^{-7}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \Upsilon}{(1S)}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<6.0\times 10^{-6}$ CL=95.0%

$\Gamma\mathrm {( {{\mathit \Upsilon}{(2S)}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.2\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \Upsilon}{(2S)}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.3\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \Upsilon}{(3S)}} \rightarrow {{\mathit e}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<4.2\times 10^{-6}$ CL=90.0%

$\Gamma\mathrm {( {{\mathit \Upsilon}{(3S)}} \rightarrow {{\mathit \mu}^{\pm}} {{\mathit \tau}^{\mp}} )}$ $/$ $\Gamma\mathrm {(total)}$

$<3.1\times 10^{-6}$ CL=90.0%

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

$<1.9\times 10^{-5}$ CL=90.0%

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

$<9.9\times 10^{-6}$ CL=90.0%

[1]	The value is for the sum of the charge states or particle/antiparticle states indicated.

[2]	A test of additive vs. multiplicative lepton family number conservation.

[3]	Derived from an analysis of neutrino-oscillation experiments.

Except where otherwise noted, content of the 2022 Review of Particle Physics is licensed under a Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) license. The publication of the Review of Particle Physics is supported by US DOE, MEXT (Japan), INFN (Italy), JPS and CERN. Individual collaborators receive support for their PDG activities from their respective institutes or funding agencies. © 2022. See LBNL disclaimers.