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- W2922355653 abstract "The gauge symmetry $SU(5) times U(1)_chi$ is the unique maximal subgroup of SO(10) which retains manifest unification at $M_{GUT}$ of the Standard Model gauge couplings, especially if low scale supersymmetry is present. The spontaneous breaking of $U(1)_chi$ at some intermediate scale leaves unbroken a $Z_2$ symmetry which is precisely `matter' parity. This yields a stable supersymmetric dark matter particle as well as topologically stable cosmic strings. Motivated by the weak gravity conjecture we impose unification of $SU(5)$ and $U(1)_chi$ at an ultraviolet cutoff $Lambda sim alpha_Lambda ^{1/2} M_{P} approx 5 times 10^{17}$ GeV, where $alpha_Lambda$ denotes the $SU(5)$ gauge coupling at $Lambda$ and $M_P approx 2.4 times 10^{18}$ GeV is the reduced Planck Scale. The impact of dimension five operators suppressed by $Lambda$ on gauge coupling unification, proton lifetime estimates and $b-tau$ Yukawa unification is discussed. In particular, the gauge boson mediated proton decay into $e^+pi^0$ can lie within the $2-sigma$ sensitivity of HyperKamiokande. We also discuss how the intermediate scale strings may survive inflation while the $SU(5)$ monopoles are inflated away. The unbroken $Z_2$ symmetry provides an intriguing link between dark matter, black holes carrying `quantum hair' and cosmic strings." @default.
- W2922355653 created "2019-03-22" @default.
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- W2922355653 date "2019-08-15" @default.
- W2922355653 modified "2023-10-15" @default.
- W2922355653 title "Supersymmetric <mml:math xmlns:mml=http://www.w3.org/1998/Math/MathML display=inline><mml:mrow><mml:mi>S</mml:mi><mml:mi>U</mml:mi><mml:mo mathvariant=bold stretchy=false>(</mml:mo><mml:mn>5</mml:mn><mml:mo mathvariant=bold stretchy=false>)</mml:mo><mml:mo>×</mml:mo><mml:mi>U</mml:mi><mml:mo mathvariant=bold stretchy=false>(</mml:mo><mml:mn>1</mml:mn><mml:msub><mml:mrow><mml:mo mathvariant=bold stretchy=false>)</mml:mo></mml:mrow><mml:mrow><mml:mi>χ</mml:mi></mml:mrow></mml:…" @default.
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- W2922355653 doi "https://doi.org/10.1103/physrevd.100.043526" @default.
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