{"id":35119,"date":"2026-04-13T14:10:10","date_gmt":"2026-04-13T14:10:10","guid":{"rendered":"https:\/\/lamarr-institute.org\/publication\/first-measurement-of-the-decay-time-integrated-cp-asymmetry-in-b_s0-to-d_s-pi-decays\/"},"modified":"2026-06-08T13:17:25","modified_gmt":"2026-06-08T13:17:25","slug":"first-measurement-of-the-decay-time-integrated-cp-asymmetry-in-b_s0-to-d_s-pi-decays","status":"publish","type":"publication","link":"https:\/\/lamarr-institute.org\/de\/publication\/first-measurement-of-the-decay-time-integrated-cp-asymmetry-in-b_s0-to-d_s-pi-decays\/","title":{"rendered":"First measurement of the decay-time-integrated CP asymmetry in $B_s^0 \\to D_s^- \\pi^+$ decays"},"content":{"rendered":"<p>A measurement of the flavour-untagged decay-time-integrated CP asymmetry in the flavour-specific decay $B_s^0 \\to D_s^-\\pi^+$, $\\langle A^s_{\\rm untagged}\\rangle$, is performed using proton-proton collision data collected by the LHCb experiment between 2016 and 2018 at a center-of-mass energy of 13 TeV, corresponding to a total integrated luminosity of 5.4 fb $^{-1}$. The CP asymmetry is measured in two $D_s^-$ meson decay modes, $D_s^- \\to K^-K^+\\pi^-$ and $D_s^- \\to \\pi^-\\pi^+\\pi^-$. The combined result, $\\langle A^s_{\\rm untagged}\\rangle = ( -1.4 \\pm 5.9\\,\\rm{(stat)} \\pm 1.1\\,\\rm{(syst)}) \\times 10^{-3}$, is consistent with the Standard Model expectation and provides a direct constraint on new physics in tree-level b-hadron decays.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A measurement of the flavour-untagged decay-time-integrated CP asymmetry in the flavour-specific decay $B_s^0 \\to D_s^-\\pi^+$, $\\langle A^s_{\\rm untagged}\\rangle$, is performed using proton-proton collision data collected by the LHCb experiment between 2016 and 2018 at a center-of-mass energy of 13 TeV, corresponding to a total integrated luminosity of 5.4 fb $^{-1}$. The CP asymmetry is measured in two $D_s^-$ meson decay modes, $D_s^- \\to K^-K^+\\pi^-$ and $D_s^- \\to \\pi^-\\pi^+\\pi^-$. The combined [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"publication-type":[30],"class_list":["post-35119","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\/35119","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\/35119\/revisions"}],"wp:attachment":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/media?parent=35119"}],"wp:term":[{"taxonomy":"publication-type","embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication-type?post=35119"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}