{"paper":{"title":"Particle-Antiparticle Mixing, \\epsilon_K and the Unitarity Triangle in the Littlest Higgs Model","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Andrzej J. Buras, Anton Poschenrieder, Selma Uhlig","submitted_at":"2004-10-22T15:42:36Z","abstract_excerpt":"We calculate the K^{0}-\\bar{K}^{0}, B_{d,s}^{0}-\\bar{B}_{d,s}^{0} mixing mass differences \\Delta M_K, \\Delta M_{d,s} and the CP-violating parameter \\epsilon_{K} in the Littlest Higgs (LH) model. For f/v as low as 5 and the Yukawa parameter x_L<0.8, the enhancement of \\Delta M_{d} amounts to at most 20%. Similar comments apply to \\Delta M_s and \\epsilon_{K}. The correction to \\Delta M_{K} is negligible. The dominant new contribution in this parameter range, calculated here for the first time, comes from the box diagrams with (W_L^\\pm,W_H^\\pm) exchanges and ordinary quarks that are only suppress"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/0410309","kind":"arxiv","version":3},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}