Linking natural supersymmetry to flavour physics

dc.contributor.authorDudas, Emilian
dc.contributor.authorvon Gersdorff, Gero [UNESP]
dc.contributor.authorPokorski, Stefan
dc.contributor.authorZiegler, Robert
dc.contributor.institutionEcole Polytech
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniv Warsaw
dc.contributor.institutionTech Univ Munich
dc.description.abstractWith the aim of linking natural supersymmetry to flavour physics, a model is proposed based on a family symmetry G xU(1), where G is a discrete nonabelian subgroup of SU(2), with both F-term and (abelian) D-term supersymmetry breaking. A good fit to the fermion masses and mixing is obtained with the same U(1) charges for the left- and right-handed quarks of the first two families and the right-handed bottom quark, and with zero charge for the left- handed top-bottom doublet and the the right handed top. The model shows an interesting indirect correlation between the correct prediction for the V-ub/V-cb ratio and large right-handed rotations in the (s,b) sector, required to diagonalise the Yukawa matrix. For the squarks, one obtains almost degenerate first two generations. The main source of the FCNC and CP violation effects is the splitting between the first two families and the right-handed sbottom determined by the relative size of F-term and D-term supersymmetry breaking. The presence of the large right-handed rotation implies that the bounds on the masses of the first two families of squarks and the right handed sbottom are in a few to a few tens TeV range. The picture that emerges is light stops and left handed sbottom and much heavier other squarks.en
dc.description.affiliationEcole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France
dc.description.affiliationSao Paulo State Univ, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, Sao Paulo, Brazil
dc.description.affiliationUniv Warsaw, Inst Theoret Phys, Fac Phys, Warsaw, Poland
dc.description.affiliationTech Univ Munich, IAS, D-80290 Munich, Germany
dc.description.affiliationTech Univ Munich, Dept Phys, D-80290 Munich, Germany
dc.description.affiliationUnespSao Paulo State Univ, Inst Fis Teor, ICTP South Amer Inst Fundamental Res, Sao Paulo, Brazil
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipEuropean ERC
dc.description.sponsorshipFrench ANR TAPDMS
dc.description.sponsorshipNational Science Centre in Poland
dc.description.sponsorshipTUM Institute
dc.description.sponsorshipIdEuropean ERC226371
dc.description.sponsorshipIdFrench ANR TAPDMSANR-09-JCJC-0146
dc.description.sponsorshipIdFrench ANR TAPDMSPITN-GA-2009-237920
dc.description.sponsorshipIdNational Science Centre in PolandDEC-2011/01/M/ST2/02466
dc.description.sponsorshipIdNational Science Centre in PolandDEC-2012/04/A/ST2/00099
dc.description.sponsorshipIdNational Science Centre in PolandDEC-2012/05/B/ST2/02597
dc.identifier.citationJournal Of High Energy Physics. New York: Springer, n. 1, 34 p., 2014.
dc.relation.ispartofJournal Of High Energy Physics
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectSupersymmetry Breakingen
dc.subjectQuark Masses and SM Parametersen
dc.subjectSupersymmetric Standard Modelen
dc.titleLinking natural supersymmetry to flavour physicsen
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Física Teórica (IFT), São Paulopt


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