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Higgs – Induced Lepton Flavor Violation

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Bounds on <strong>Higgs</strong> couplings : 2-loops<br />

10<br />

observable<br />

BR (¹ ! e°)<br />

BR (¿ ! ¹°)<br />

BR (¿ ! e°)<br />

constraint<br />

³<br />

jy 12 j 2 + jy 21 j 2´1=2 < 6 £ 10<br />

¡6<br />

³<br />

jy 23 j 2 + jy 32 j 2´1=2 < 4 £ 10<br />

¡2<br />

³<br />

jy 13 j 2 + jy 31 j 2´1=2 < 3 £ 10<br />

¡2<br />

d e<br />

¯¯Im y 11¯¯ < 6 £ 10 ¡7<br />

d ¹<br />

¯¯Im y22¯¯ < O(10 2 )<br />

±a e<br />

¯¯Re y 11¯¯ < 0:27<br />

±a ¹<br />

¯¯Re y 22¯¯ < 0:21<br />

Particularly<br />

strong<br />

constraint !

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