L or<chr_var letter="s" var="long">∫</chr_var> a quel <chr_abbr type="reg" class="dc" expan="que" cert="no">q-hbar</chr_abbr> p<chr_abbr type="reg" class="dc" expan="oni" cert="no">oi-hbar</chr_abbr>ne <chr_var letter="s" var="long">∫</chr_var>e lieue 