{"paper":{"title":"Possibility of large lifetime differences in neutral B meson systems","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Amol Dighe (Tata Inst.), Anirban Kundu, Soumitra Nandi (Calcutta U.)","submitted_at":"2007-05-31T11:46:24Z","abstract_excerpt":"We investigate new physics models that can increase the lifetime differences in the $B_q$--$\\bar{B}_q$ systems ($q = d,s$) above their standard model values. If both $B_q$ as well as $\\bar{B}_q$ can decay to a final state through flavour dependent new physics interactions, the so-called Grossman bound may be evaded. As examples, we consider the scalar leptoquark model and $\\lambda''$-type R-parity violating supersymmetry. We find that models with a scalar leptoquark can enhance $\\Delta\\Gamma_s/\\Gamma_s$ all the way up to its experimental upper bound and $\\Delta\\Gamma_d/\\Gamma_d$ to as much as "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0705.4547","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0705.4547/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}