The ratio between the branching fractions of the $B^0\\rightarrow \\rho(770)^{0}\\gamma$ and $B^{0}\\rightarrow K^{*}(892)^{0}\\gamma$ decays is measured with proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb $^{-1}$. The measured value is<\/p>\n
$ \\frac{{\\cal B}(B^0\\rightarrow \\rho(770)^{0}\\gamma)}{{\\cal B}(B^0\\rightarrow K^{*}(892)^{0}\\gamma)}=0.0189\\pm 0.0007\\pm 0.0005, $<\/p>\n
where the first uncertainty is statistical and the second systematic. The branching fraction for $B^0\\rightarrow \\rho(770)^{0}\\gamma$ decays is hence obtained as<\/p>\n
$ {\\cal{B}}(B^0\\rightarrow \\rho(770)^{0}\\gamma) =(7.9\\pm 0.3\\pm 0.2\\pm 0.2) \\times 10^{-7}, $<\/p>\n
where the last uncertainty is due to the branching fraction of the normalisation mode. This result assumes that both the $\\rho(770)^0$ and $K^{*}(892)^0$ decays saturate the dihadron mass spectra considered in the analysis. It is consistent with the current world-average value and by far the most precise measurement to date.<\/p>\n","protected":false},"excerpt":{"rendered":"
The ratio between the branching fractions of the $B^0\\rightarrow \\rho(770)^{0}\\gamma$ and $B^{0}\\rightarrow K^{*}(892)^{0}\\gamma$ decays is measured with proton-proton collision data collected by the LHCb experiment at centre-of-mass energies of 7, 8, and 13 TeV, corresponding to an integrated luminosity of 9 fb $^{-1}$. The measured value is $ \\frac{{\\cal B}(B^0\\rightarrow \\rho(770)^{0}\\gamma)}{{\\cal B}(B^0\\rightarrow K^{*}(892)^{0}\\gamma)}=0.0189\\pm 0.0007\\pm 0.0005, $ where the first uncertainty is statistical and the second systematic. The branching fraction for […]<\/p>\n","protected":false},"author":12,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"publication-type":[30],"class_list":["post-32186","publication","type-publication","status-publish","hentry","publication-type-article"],"acf":[],"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication\/32186","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication"}],"about":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/types\/publication"}],"author":[{"embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/users\/12"}],"version-history":[{"count":0,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication\/32186\/revisions"}],"wp:attachment":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/media?parent=32186"}],"wp:term":[{"taxonomy":"publication-type","embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication-type?post=32186"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}