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New physics signature in ${D}^{0}\left({\overline{D}}^{0}\right)\to f$ effective width asymmetries

Delepine, David; Faisel, Gaber; Ramirez, Carlos


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{
  "@context": "https://schema.org/", 
  "@id": 105765, 
  "@type": "ScholarlyArticle", 
  "creator": [
    {
      "@type": "Person", 
      "affiliation": "Division de Ciencias e Ingenier\u00edas, Universidad de Guanajuato, Le\u00f3n, Guanajuato, C.P. 37150, Mexico", 
      "name": "Delepine, David"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Department of Physics, Faculty of Arts and Sciences, S\u00fcleyman Demirel University, Isparta, 32260, Turkey", 
      "name": "Faisel, Gaber"
    }, 
    {
      "@type": "Person", 
      "affiliation": "Depto. de F\u00edsica, Universidad de los Andes, Bogot\u00e1, A. A. 4976-12340, Colombia", 
      "name": "Ramirez, Carlos"
    }
  ], 
  "datePublished": "2019-01-01", 
  "description": "<p>Violation of charge conjugation-parity (  $CP$ ) symmetry plays a major rule in the dominance of matter in our universe. A kind of   $CP$  violation results from the asymmetry of the life time measured in   ${M}^{0}$  and   ${\\overline{M}}^{0}$ , here M is a heavy meson, decays to final states which is referred in the literature as   ${A}_{\\Gamma }^{f}$ . In this paper, we give an estimation of the upper bound on   $|{A}_{\\Gamma }^{f}|$  for the Cabibbo Favored   ${D}^{0}\\to {K}^{-}{\\pi }^{+}$  decay process in different models. We show that in the standard model,   $|{A}_{\\Gamma }^{f}|\\lesssim O\\left({10}^{-10}\\right)$ . Recently a bound on   ${A}_{\\Gamma }^{f}$  has been obtained:   ${\\left({A}_{\\Gamma }^{f}\\right)}^{Exp.}=\\left(1.6\u00b11\\right)\u00d7{10}^{-4}$ . This result motivates further studies on   ${A}_{\\Gamma }^{f}$  in beyond standard model physics. In the framework of two Higgs doublet model with generic Yukawa structure, we show that   $|{A}_{\\Gamma }^{f}|\\lesssim O\\left({10}^{-7}\\right)$  which is several orders of magnitude smaller than the current experimental value. Finally, in the framework of left-right symmetric models in which the mixing between the left and the right gauge bosons is allowed and the left-right symmetry is not manifest at unification scale, we find that   ${A}_{\\Gamma }^{f}$  can be as large as   $|{A}_{\\Gamma }^{f}|\\lesssim O\\left({10}^{-5}\\right)$  which is one order of magnitude smaller than the experimentally measured value by LHCb collaborators.</p>", 
  "headline": "New physics signature in   ${D}^{0}\\left({\\overline{D}}^{0}\\right)\\to f$  effective width asymmetries", 
  "identifier": 105765, 
  "image": "https://aperta.ulakbim.gov.tr/static/img/logo/aperta_logo_with_icon.svg", 
  "license": "http://www.opendefinition.org/licenses/cc-by", 
  "name": "New physics signature in   ${D}^{0}\\left({\\overline{D}}^{0}\\right)\\to f$  effective width asymmetries", 
  "url": "https://aperta.ulakbim.gov.tr/record/105765"
}
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