Skip to main content
SpringerLink
Log in

Leptons in composite MFV

  • Published:
Journal of High Energy Physics Aims and scope Submit manuscript

Abstract

We study the lepton sector of composite Higgs models with partial compositeness. The standard anarchic scenario is in conflict with the absence of observable charged lepton flavor violation. This tension can be completely solved in MFV scenarios that require either left-handed or right-handed SM leptons to be equally composite. Constraints on this scenario are weak and the composite lepton partners could be as light as few hundreds GeVs with interesting LHC signatures. The contribution to the muon (g − 2) in theories where the Higgs is a pseudo Nambu-Goldstone boson is also discussed.

This is a preview of subscription content, log in via an institution to check access.

Access this article

Log in via an institution

Price excludes VAT (USA)
Tax calculation will be finalised during checkout.

Instant access to the full article PDF.

Institutional subscriptions

Similar content being viewed by others

References

  1. G. Ambrosio, G. Giudice, G. Isidori and A. Strumia, Minimal flavor violation: An Effective field theory approach, Nucl. Phys. B 645 (2002) 155 [hep-ph/0207036] [INSPIRE].

    Article  ADS  Google Scholar 

  2. G. Cacciapaglia et al., A GIM mechanism from extra dimensions, JHEP 04 (2008) 006 [arXiv:0709.1714] [INSPIRE].

    Article  ADS  Google Scholar 

  3. R. Barbieri, G. Isidori and D. Pappadopulo, Composite fermions in electroweak symmetry breaking, JHEP 02 (2009) 029 [arXiv:0811.2888] [INSPIRE].

    Article  ADS  Google Scholar 

  4. C. Delaunay, O. Gedalia, S.J. Lee, G. Perez and E. Ponton, Ultra visible warped model from flavor triviality and improved naturalness, Phys. Rev. D 83 (2011) 115003 [arXiv:1007.0243] [INSPIRE].

    ADS  Google Scholar 

  5. M. Redi and A. Weiler, Flavor and CP invariant composite Higgs models, JHEP 11 (2011) 108 [arXiv:1106.6357] [INSPIRE].

    Article  ADS  Google Scholar 

  6. K. Agashe, G. Perez and A. Soni, Flavor structure of warped extra dimension models, Phys. Rev. D 71 (2005) 016002 [hep-ph/0408134] [INSPIRE].

    ADS  Google Scholar 

  7. C. Csáki, A. Falkowski and A. Weiler, The flavor of the composite pseudo-goldstone Higgs, JHEP 09 (2008) 008 [arXiv:0804.1954] [INSPIRE].

    Article  ADS  Google Scholar 

  8. M. Blanke, A.J. Buras, B. Duling, S. Gori and A. Weiler, ΔF = 2 observables and fine-tuning in a warped extra dimension with custodial protection, JHEP 03 (2009) 001 [arXiv:0809.1073] [INSPIRE].

    Article  ADS  Google Scholar 

  9. M. Bauer, S. Casagrande, U. Haisch and M. Neubert, Flavor physics in the Randall-Sundrum model: II. tree-level weak-interaction processes, JHEP 09 (2010) 017 [arXiv:0912.1625] [INSPIRE].

    Article  ADS  Google Scholar 

  10. R. Barbieri, D. Buttazzo, F. Sala and D.M. Straub, Flavour physics from an approximate U(2)3 symmetry, JHEP 07 (2012) 181 [arXiv:1203.4218] [INSPIRE].

    Article  ADS  Google Scholar 

  11. M. Redi, Composite MFV and beyond, Eur. Phys. J. C 72 (2012) 2030 [arXiv:1203.4220] [INSPIRE].

    Article  ADS  Google Scholar 

  12. G. Giudice, C. Grojean, A. Pomarol and R. Rattazzi, The strongly-interacting light Higgs, JHEP 06 (2007) 045 [hep-ph/0703164] [INSPIRE].

    Article  ADS  Google Scholar 

  13. K. Agashe, T. Okui and R. Sundrum, A common origin for neutrino anarchy and charged hierarchies, Phys. Rev. Lett. 102 (2009) 101801 [arXiv:0810.1277] [INSPIRE].

    Article  ADS  Google Scholar 

  14. B. Keren-Zur et al., On partial compositeness and the CP asymmetry in charm decays, Nucl. Phys. B 867 (2013) 429 [arXiv:1205.5803] [INSPIRE].

    Google Scholar 

  15. R. Contino, T. Kramer, M. Son and R. Sundrum, Warped/composite phenomenology simplified, JHEP 05 (2007) 074 [hep-ph/0612180] [INSPIRE].

    Article  ADS  Google Scholar 

  16. K. Kannike, M. Raidal, D.M. Straub and A. Strumia, Anthropic solution to the magnetic muon anomaly: the charged see-saw, JHEP 02 (2012) 106 [Erratum ibid. 1210 (2012) 136] [arXiv:1111.2551] [INSPIRE].

  17. R. Dermisek and A. Raval, Explanation of the muon g − 2 anomaly with vectorlike leptons and its implications for Higgs decays, Phys. Rev. D 88 (2013) 013017 [arXiv:1305.3522] [INSPIRE].

    ADS  Google Scholar 

  18. K. Agashe, A.E. Blechman and F. Petriello, Probing the Randall-Sundrum geometric origin of flavor with lepton flavor violation, Phys. Rev. D 74 (2006) 053011 [hep-ph/0606021] [INSPIRE].

    ADS  Google Scholar 

  19. C. Csáki, Y. Grossman, P. Tanedo and Y. Tsai, Warped penguin diagrams, Phys. Rev. D 83 (2011) 073002 [arXiv:1004.2037] [INSPIRE].

    ADS  Google Scholar 

  20. K. Agashe, Relaxing constraints from lepton flavor violation in 5D flavorful theories, Phys. Rev. D 80 (2009) 115020 [arXiv:0902.2400] [INSPIRE].

    ADS  Google Scholar 

  21. MEG collaboration, J. Adam et al., New constraint on the existence of the μ + → e + γ decay, arXiv:1303.0754 [INSPIRE].

  22. A. De Simone, O. Matsedonskyi, R. Rattazzi and A. Wulzer, A first top partner’s hunter guide, JHEP 04 (2013) 004 [arXiv:1211.5663] [INSPIRE].

    Article  Google Scholar 

  23. M. Redi, Dipoles in composite Higgs models, work in progress.

  24. http://pdg.lbl.gov/2011/listings/rpp2011-list-quark-lepton-compositeness.pdf

  25. A. Azatov and J. Galloway, Light custodians and Higgs physics in composite models, Phys. Rev. D 85 (2012) 055013 [arXiv:1110.5646] [INSPIRE].

    ADS  Google Scholar 

  26. C. Delaunay, C. Grojean and G. Perez, Modified Higgs physics from composite light flavors, arXiv:1303.5701 [INSPIRE].

  27. R. Franceschini, T. Hambye and A. Strumia, Type-III see-saw at LHC, Phys. Rev. D 78 (2008) 033002 [arXiv:0805.1613] [INSPIRE].

    ADS  Google Scholar 

  28. E. Del Nobile, R. Franceschini, D. Pappadopulo and A. Strumia, Minimal matter at the Large Hadron Collider, Nucl. Phys. B 826 (2010) 217 [arXiv:0908.1567] [INSPIRE].

    Article  ADS  Google Scholar 

  29. G. Giudice, P. Paradisi and M. Passera, Testing new physics with the electron g − 2, JHEP 11 (2012) 113 [arXiv:1208.6583] [INSPIRE].

    Article  ADS  Google Scholar 

  30. ATLAS collaboration, Search for excited leptons in proton-proton collisions at \( \sqrt{s}=7 \) TeV with the ATLAS detector, Phys. Rev. D 85 (2012) 072003 [arXiv:1201.3293] [INSPIRE].

    ADS  Google Scholar 

  31. M. Redi, V. Sanz, M. de Vries and A. Weiler, Strong signatures of right-handed compositeness, JHEP 08 (2013) 008 [arXiv:1305.3818] [INSPIRE].

    Article  ADS  Google Scholar 

  32. ATLAS collaboration, Search for type III seesaw model heavy fermions in events with four charged leptons using 5.8 fb −1 of \( \sqrt{s}=8 \) TeV data with the ATLAS detector, ATLAS-CONF-2013-019 (2013).

  33. G. Blankenburg, G. Isidori and J. Jones-Perez, Neutrino masses and LFV from minimal breaking of U(3)5 and U(2)5 flavor symmetries, Eur. Phys. J. C 72 (2012) 2126 [arXiv:1204.0688] [INSPIRE].

    Article  ADS  Google Scholar 

  34. M. Beneke, P. Dey and J. Rohrwild, The muon anomalous magnetic moment in the Randall-Sundrum model, JHEP 08 (2013) 010 [arXiv:1209.5897] [INSPIRE].

    Article  ADS  Google Scholar 

  35. G. Perez and L. Randall, Natural neutrino masses and mixings from warped geometry, JHEP 01 (2009) 077 [arXiv:0805.4652] [INSPIRE].

    Article  ADS  Google Scholar 

  36. M.-C. Chen and H.-B. Yu, Minimal flavor violation in the lepton sector of the Randall-Sundrum model, Phys. Lett. B 672 (2009) 253 [arXiv:0804.2503] [INSPIRE].

    Article  ADS  Google Scholar 

  37. C. Csáki, C. Delaunay, C. Grojean and Y. Grossman, A model of lepton masses from a warped extra dimension, JHEP 10 (2008) 055 [arXiv:0806.0356] [INSPIRE].

    Article  ADS  Google Scholar 

  38. F. del Aguila, A. Carmona and J. Santiago, Neutrino masses from an A 4 symmetry in holographic composite Higgs models, JHEP 08 (2010) 127 [arXiv:1001.5151] [INSPIRE].

    Article  ADS  Google Scholar 

  39. A. Kadosh and E. Pallante, An A 4 flavor model for quarks and leptons in warped geometry, JHEP 08 (2010) 115 [arXiv:1004.0321] [INSPIRE].

    Article  ADS  Google Scholar 

  40. C. Hagedorn and M. Serone, Leptons in holographic composite Higgs models with non-abelian discrete symmetries, JHEP 10 (2011) 083 [arXiv:1106.4021] [INSPIRE].

    Article  ADS  Google Scholar 

Download references

Author information

Authors and Affiliations

  1. INFN — Sezione di Firenze, Via G. Sansone 1, I-50019, Sesto Fiorentino, Italy

    Michele Redi

Authors
  1. Michele Redi
    View author publications

    You can also search for this author in PubMed Google Scholar

Corresponding author

Correspondence to Michele Redi.

Rights and permissions

Reprints and permissions

About this article

Cite this article

Redi, M. Leptons in composite MFV. J. High Energ. Phys. 2013, 60 (2013). https://doi.org/10.1007/JHEP09(2013)060

Download citation

  • Received:

  • Accepted:

  • Published:

  • DOI: https://doi.org/10.1007/JHEP09(2013)060

Keywords

Search

Navigation