{"id":32284,"date":"2026-01-21T17:01:38","date_gmt":"2026-01-21T17:01:38","guid":{"rendered":"https:\/\/lamarr-institute.org\/publication\/measurement-of-cp-asymmetries-in-lambda_b0to-ph\/"},"modified":"2026-01-21T17:19:47","modified_gmt":"2026-01-21T17:19:47","slug":"measurement-of-cp-asymmetries-in-lambda_b0to-ph","status":"publish","type":"publication","link":"https:\/\/lamarr-institute.org\/de\/publication\/measurement-of-cp-asymmetries-in-lambda_b0to-ph\/","title":{"rendered":"Measurement of CP asymmetries in $\\Lambda_b^0\\to ph^{-}$"},"content":{"rendered":"<p>A search for CP violation in $\\Lambda_b^0\\rightarrow pK^-$ and $\\Lambda_b^0\\rightarrow p\\pi^-$ decays is presented using the full Run 1 and Run 2 data samples of   collisions collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb$^-1$  at center-of-mass energies of 7, 8, and 13 TeV. For the Run 2 data sample, the CP&#8211;violating asymmetries are measured to be $A_{CP}^{pK^-} = (-1.4 \\pm 0.7 \\pm 0.4)\\%$ and $A_{CP}^{pK^-} = (-1.4 \\pm 0.7 \\pm 0.4)\\%$, where the first uncertainty is statistical and the second is systematic. Following significant improvements in the evaluation of systematic uncertainties compared to the previous LHCb measurement, the Run 1 dataset is reanalyzed to update the corresponding results. When combining the Run 2 and updated Run 1 measurements, the final results are found to be $A_{CP}^{pK^-} = (-1.1 \\pm 0.7 \\pm 0.4)\\%$ and $A_{CP}^{p\\pi^-} = (0.2 \\pm 0.8 \\pm 0.4)\\%$. constituting the most precise measurements of these asymmetries to date.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A search for CP violation in $\\Lambda_b^0\\rightarrow pK^-$ and $\\Lambda_b^0\\rightarrow p\\pi^-$ decays is presented using the full Run 1 and Run 2 data samples of collisions collected with the LHCb detector, corresponding to an integrated luminosity of 9 fb$^-1$ at center-of-mass energies of 7, 8, and 13 TeV. For the Run 2 data sample, the CP&#8211;violating asymmetries are measured to be $A_{CP}^{pK^-} = (-1.4 \\pm 0.7 \\pm 0.4)\\%$ and $A_{CP}^{pK^-} [&hellip;]<\/p>\n","protected":false},"author":12,"featured_media":0,"template":"","meta":{"_acf_changed":false,"footnotes":""},"publication-type":[30],"class_list":["post-32284","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\/32284","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\/32284\/revisions"}],"wp:attachment":[{"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/media?parent=32284"}],"wp:term":[{"taxonomy":"publication-type","embeddable":true,"href":"https:\/\/lamarr-institute.org\/de\/wp-json\/wp\/v2\/publication-type?post=32284"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}