1 / 13

Toshifumi Yamashita Aichi Medical U.

Toshifumi Yamashita Aichi Medical U. E 6 orbifold GUT with gauge-Higgs unification. 2012/8/19 @SI2012. based on a work in preparation w/ K. Kojima (Kyushu University) & K. Takenaga ( Kumamoto Health Science University ). Overview. Hosotani mech. in GUTs.

kaethe
Download Presentation

Toshifumi Yamashita Aichi Medical U.

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Toshifumi Yamashita Aichi Medical U. E6orbifold GUT with gauge-Higgs unification 2012/8/19@SI2012 based on a work in preparation w/ K. Kojima (Kyushu University) & K. Takenaga (Kumamoto Health Science University)

  2. Overview Hosotani mech. in GUTs • Hosotani breaking of the SU(5)GG “grand gauge-Higgs unification” K.Kojima, K.Takenaga & T.Y. (2011) adjoint SUSY • naturalDoublet-Triplet (DT) splitting • general & testable prediction T.Y. (2011) my talk @SI2011 We may get a hint of the GUT-breaking @LHC. Taniguchi’s poster

  3. Overview Hosotani mech. in GUTs • rank reduction by the Hosotani mechanism K.Kojima, K.Takenaga & T.Y. in preparation • a more straightforward application of the gauge-Higgs unification • a kind of the orbifold GUTs (the SU(5)GG is broken by the BCs) • extra U(1)s often remain in the orbifold GUTs

  4. Plan Overview reviews Hosotani mech., flipped SU(5) E6 model SUSY version summary

  5. Hosotani mechanism Y.Hosotani (1983-) • overview 5D theory gauge field compactification 4D theory gauge field scalar field with KK modes Higgs • flat pot. @tree • eff. pot. via loop

  6. flipped SU(5) • Higgs fields: 10H, 5H • fermions: 10i, 5i, 1i(i=1,2,3) S.M.Barr (1982) <10H> GSM • matter content SM Higgs field missing partner (MP) mechanism embedded, w/ the SU(2)Rflipped • DT splitting: 10H 10H 5H the triplet mass

  7. Plan Overview reviews Hosotani mech., flipped SU(5) E6 model SUSY version summary

  8. E6 model K.Kojima, K.Takenaga & T.Y. • candidate unified group • rank G > 4 • G/GSM*U(1)n contains SU(3)*SU(2) singlets. • rank 5 SU(6): no singlets SO(10): a singlet but in 10 from 45 the U(1)charge doesnot fit to be further “flipped” E6is an interesting candidate. Maekawa’s talk

  9. E6 model K.Kojima, K.Takenaga & T.Y. • setup on S1/Z2compactification • By these BCs, . • The A5 has zero modes in . <A5> breaks • The U(1)V’ is made anomalous to be broken.

  10. E6 model K.Kojima, K.Takenaga & T.Y. • vacuum • w/o loss of generality, <10> = <Nc> + <Dc> i.e. these are color-breaking vacua. • E6 is tough to treat, but it is possible to calculate the eff. pot. a la JHEP0402(200)059. N.Haba & T.Y. • 2 pairs of adj. fermions w/ opposite periodicities Preliminary desired vacuum

  11. Plan Overview reviews Hosotani mech., flipped SU(5) E6 model SUSY version summary

  12. SUSY version K.Kojima, K.Takenaga & T.Y. • DT splitting Preliminary • 10H 10H 5H is not allowed The mech. in 4D flipped SU(5) not applied • another realization of the MP mech. • light particles & proton decay • A light color triplet from A5 is predicted. • not mix w/ the usual color triplet Higgs field • can contribute to the PD via higher dim. op. that is related tothe seesaw op.

  13. summary Hosotani mech. for rank reduction in GUT • no candidate in the groups w/ rank 5 • E6 model via the flipped SU(5) • 1-loop eff. pot. is calculated. desired vacuum w/ appropriate bulk matter • SUSY version • DT splitting by another realization of MP mech.. • low energy prediction: light color triplet PD related to the neutrino masses

More Related