| Decay | Limit at 90% CL x106 | Experiment | Reference |
|---|
|
| π+e+e- | 110.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 52.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
| 5.9 | CLEO | P. Rubin et al., Phys. Rev. D82 (2010) 092007 |
| 1.1 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| π+μ+μ- | 220.0 | E653 | K. Kodama et al., Phys. Lett. B345 (1995) 85-92 |
| 89.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 15.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
| 8.8 | Focus | J.M. Link et al., Phys. Lett. B572 (2003) 21-31 |
| 6.5 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
| 3.9 | D0 | V.M. Abazov, Phys. Rev. Lett. 100 (2008) 101801 |
|
| ρ+μ+μ- | 560.0 | E653 | K. Kodama et al., Phys. Lett. B345 (1995) 85-92 |
|
| K+e+e- | 200.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 3.0 | CLEO | P. Rubin et al., Phys. Rev. D82 (2010) 092007 |
| 1.0 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| π+e±μ∓ | 34.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
|
| π+e+μ- | 110.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 2.9 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| π+μ+e- | 130.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 3.6 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| K+e±μ∓ | 68.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
|
| K+e+μ- | 130.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 1.2 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| K+μ+e- | 120.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 2.8 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| π-e+e+ | 110.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 96.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
| 1.9 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
| 1.1 | CLEO | P. Rubin et al., Phys. Rev. D82 (2010) 092007 |
|
| π-μ+μ+ | 87.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 17.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
| 4.8 | Focus | J.M. Link et al., Phys. Lett. B572 (2003) 21-31 |
| 2.0 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| π-e+μ+ | 110.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 50.0 | E791 | E.M. Aitala et al., Phys. Lett. B462 (1999) 401-409 |
|
| ρ-μ+μ+ | 560.0 | E653 | K. Kodama et al., Phys. Lett. B345 (1995) 85-92 |
|
| K-e+e+ | 120.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 3.5 | CLEO | P. Rubin et al., Phys. Rev. D82 (2010) 092007 |
| 0.9 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| K-μ+μ+ | 320.0 | E653 | K. Kodama et al., Phys. Lett. B345 (1995) 85-92 |
| 120.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
| 13.0 | Focus | J.M. Link et al., Phys. Lett. B572 (2003) 21-31 |
| 10.0 | BaBar | J.P. Lees et al., Phys. Rev. D84 (2011) 072006 |
|
| K-e+μ+ | 130.0 | E687 | P.L. Frabetti et al., Phys. Lett. B398 (1997) 239-244 |
|
| K*-(892)μ+μ+ | 850.0 | E653 | K. Kodama et al., Phys. Lett. B345 (1995) 85-92 |