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"organizational", "name": "CMS Collaboration"}}], "title": "Statistical model for CMS-EXO-24-011", "publisher": "CERN", "publication_date": "2026-03-30", "related_identifiers": [{"identifier": "https://inspirehep.net/literature/3136278", "scheme": "url", "relation_type": {"id": "ismetadatafor", "title": {"de": "Hat Metadaten f\u00fcr", "en": "Is metadata for"}}, "resource_type": {"id": "model", "title": {"cs": "Model", "de": "Modell", "en": "Model", "sv": "Modell"}}}], "rights": [{"id": "cc-by-4.0", "title": {"en": "Creative Commons Attribution 4.0 International"}, "description": {"en": "The Creative Commons Attribution license allows re-distribution and re-use of a licensed work on the condition that the creator is appropriately credited."}, "icon": "cc-by-icon", "props": {"url": "https://creativecommons.org/licenses/by/4.0/legalcode", "scheme": "spdx"}}], "description": "<h1>Statistical model for CMS EXO-24-011</h1>\n<p>This resource contains the full statistical model for the paper <em>Search for new physics with dijet angular distributions in proton-proton collisions at sqrt(s) = 13 TeV</em> in which it is descrbied the Measurement of dijet angular distributions in proton-proton collisions at sqrt(s) = 13 TeV corresponding to 138/fb and search for beyond the standard model physics.</p>\n<p>The instructions below include the commands needed to reproduce the workspaces used for the results presented in the publication. For additional technical documentation please consult the <a href=\"https://github.com/cms-analysis/HiggsAnalysis-CombinedLimit/\">CMS Combine documentation.</a></p>\n<h2>Analysis specific instructions</h2>\n<p>Developed using Combine v7 in CMSSW_8_1_0. Later Combine versions up to at least v10.5 should also be fine.</p>\n<p>Each BSM model and mass/energy/coupling point has it's own datacard.</p>\n<p>ADD: <code>chi_datacard13TeV*_ADD[Lambda]_run2.txt</code></p>\n<p>ALP: <code>chi_datacard13TeV*_alp_QCD_fa[fa]_run2.txt</code></p>\n<p>CI: <code>chi_datacard13TeV*<em>cs_nn31nnlo</em>[Lambda]_[type]_run2.txt</code></p>\n<p>DM mediator: <code>chi_datacard13TeV*<em>DMAxial_Dijet_LO_Mphi</em>[mass]<em>1_1p0_1p0_Mar5_gdmv_0_gdma_1p0_gv_0_ga</em>[coupling]_run2.txt</code></p>\n<p>QBH_ADD: <code>chi_datacard13TeV*<em>QBH_ADD6</em>[Lambda]_run2.txt</code></p>\n<p>QBH_RS1: <code>chi_datacard13TeV*<em>QBH_RS1</em>[Lambda]_run2.txt</code></p>\n<p>SMEFT: <code>chi_datacard13TeV*_tripleG_QCD_CG[CG]_run2.txt</code></p>\n<p>First signal process in the card is the QCD+BSM, second signal process is QCD, third process is a dummy background with 10e-20 events (because the combine scripts ask for it).</p>\n<p>Using <code>HiggsAnalysis.CombinedLimit.HiggsJPC:twoHypothesisHiggs</code> (available in the Combine default repository) with parameter x describing the fraction of QCD+BSM and QCD, i.e.&nbsp;QCD+BSM corresponds to x=1 and QCD to x=0.</p>\n<h2>Physics Model</h2>\n<p>HiggsAnalysis.CombinedLimit.HiggsJPC:twoHypothesisHiggs</p>\n<h2>Example how to compute an exclusion limit</h2>\n<p>To obtain BSM energy/mass exclusion limits, for each mass point the limit on signal strength x is computed.</p>\n<pre><code>text2workspace.py -m 12000 chi_datacard13TeV3_ADD12000_run2.txt -P HiggsAnalysis.CombinedLimit.HiggsJPCmodified:twoHypothesisHiggs -o workspace.root\ncombine -m 12000 -M AsymptoticLimits -n ADD workspace.root</code></pre>\n<p>Models with signal strength x&lt;1 are excluded at 95% confidence limit. 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