{
  "id": "1306.2625",
  "version": "v4",
  "published": "2013-06-11T19:48:55.000Z",
  "updated": "2013-08-21T18:56:31.000Z",
  "title": "CP asymmetries in three-body B+- decays to charged pions and kaons",
  "authors": [
    "Bhubanjyoti Bhattacharya",
    "Michael Gronau",
    "Jonathan L. Rosner"
  ],
  "comment": "References added and updated, to be published in Physics Letters B",
  "doi": "10.1016/j.physletb.2013.08.062",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "CP asymmetries have been measured recently by the LHCb collaboration in three-body $B^+$ decays to final states involving charged pions and kaons. Large asymmetries with opposite signs at a level of about 60% have been observed in $B^\\pm\\to \\pi^\\pm({\\rm or} K^\\pm)\\pi^+\\pi^-$ and $B^\\pm \\to \\pi^\\pm K^+K^-$ for restricted regions in the Dalitz plots involving $\\pi^+\\pi^-$ and $K^+K^-$ with low invariant mass. U-spin is shown to predict corresponding $\\Delta S=0$ and $\\Delta S=1$ asymmetries with opposite signs and inversely proportional to their branching ratios, in analogy with a successful relation predicted thirteen years ago between asymmetries in $B_s\\to K^-\\pi^+$ and $B^0 \\to K^+ \\pi^-$. We compare these predictions with the measured integrated asymmetries. Effects of specific resonant or non-resonant partial waves on enhanced asymmetries for low-pair-mass regions of the Dalitz plot are studied in $B^\\pm \\to \\pi^\\pm \\pi^+\\pi^-$. The closure of low-mass $\\pi^+\\pi^-$ and $K^+K^-$ channels involving only $\\pi\\pi \\leftrightarrow K\\bar K$ rescattering may explain by CPT approximately equal magnitudes and opposite signs measured in $B^\\pm\\to \\pi^\\pm\\pi^+\\pi^-$ and $B^\\pm \\to \\pi^\\pm K^+K^-$.",
  "revisions": [
    {
      "version": "v4",
      "updated": "2013-08-21T18:56:31.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "cp asymmetries",
      "charged pions",
      "opposite signs",
      "three-body",
      "dalitz plot"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "journal": "Physics Letters B",
      "year": 2013,
      "month": "Oct",
      "volume": 726,
      "number": "1-3",
      "pages": 337
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 1238121,
      "adsabs": "2013PhLB..726..337B"
    }
  }
}