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Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data
<!--HTML--><p>In this seminar we present the first simultaneous test of muon-electron universality in $B^+ \to K^+ \ell^+\ell^-$ and $B^0 \to K^{*0} \ell^+ \ell^-$ decays, known as $R(K)$ and $R(K^*)$, in two regions of di-lepton invariant mass squared.<br>The analysis operates at...
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| Lenguaje: | eng |
| Publicado: |
2022
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| Acceso en línea: | http://cds.cern.ch/record/2845155 |
| _version_ | 1780976532805648384 |
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| author | Quagliani, Renato |
| author_facet | Quagliani, Renato |
| author_sort | Quagliani, Renato |
| collection | CERN |
| description | <!--HTML--><p>In this seminar we present the first simultaneous test of muon-electron universality in $B^+ \to K^+ \ell^+\ell^-$ and $B^0 \to K^{*0} \ell^+ \ell^-$ decays, known as $R(K)$ and $R(K^*)$, in two regions of di-lepton invariant mass squared.<br>The analysis operates at a higher signal purity compared with previous analyses and implements a data-driven treatment of residual hadronic backgrounds. The analysis uses the full LHCb Run 1 and 2 data recorded in 2011-2012 and 2015-2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. This analysis is the most sensitive lepton universality test in rare b-decays and the results obtained supersede the previous LHCb measurements of $R(K)$ and $R(K^{*0})$.</p> |
| id | cern-2845155 |
| institution | Organización Europea para la Investigación Nuclear |
| language | eng |
| publishDate | 2022 |
| record_format | invenio |
| spelling | cern-28451552022-12-21T22:13:59Zhttp://cds.cern.ch/record/2845155engQuagliani, RenatoMeasurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 dataMeasurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 dataLHC Seminar<!--HTML--><p>In this seminar we present the first simultaneous test of muon-electron universality in $B^+ \to K^+ \ell^+\ell^-$ and $B^0 \to K^{*0} \ell^+ \ell^-$ decays, known as $R(K)$ and $R(K^*)$, in two regions of di-lepton invariant mass squared.<br>The analysis operates at a higher signal purity compared with previous analyses and implements a data-driven treatment of residual hadronic backgrounds. The analysis uses the full LHCb Run 1 and 2 data recorded in 2011-2012 and 2015-2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. This analysis is the most sensitive lepton universality test in rare b-decays and the results obtained supersede the previous LHCb measurements of $R(K)$ and $R(K^{*0})$.</p>oai:cds.cern.ch:28451552022 |
| spellingShingle | LHC Seminar Quagliani, Renato Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data |
| title | Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data |
| title_full | Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data |
| title_fullStr | Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data |
| title_full_unstemmed | Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data |
| title_short | Measurements of $R(K)$ and $R(K^*)$ with the full LHCb Run 1 and 2 data |
| title_sort | measurements of $r(k)$ and $r(k^*)$ with the full lhcb run 1 and 2 data |
| topic | LHC Seminar |
| url | http://cds.cern.ch/record/2845155 |
| work_keys_str_mv | AT quaglianirenato measurementsofrkandrkwiththefulllhcbrun1and2data |