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Flavor changing neutral currents and a Z′

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Abstract

We consider a non-universal Z′ that affects primarily the third generation fermions as an example of new physics associated with the top-quark. We first discuss constraints on the mass and coupling strength of such a Z′. We then turn our attention to the flavor changing neutral currents (FCNC) present in the model. We discuss the experimental constraints and their implications. We propose an ansatz to understand the smallness of the FCNC in terms of the CKM matrix.

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References

  1. Langacker, P.: Rev. Mod. Phys. 81, 1199 (2009) arXiv:hep-ph0801.1345

    Article  ADS  Google Scholar 

  2. He, X.G., Valencia, G.: Phys. Rev. D 66, 013004 (2002) [Erratum-ibid. D66, 079901 (2002)]. arXiv:hep-ph/0203036

    Article  ADS  Google Scholar 

  3. He, X.G., Valencia, G.: Phys. Rev. D68, 033011 (2003). arXiv:hep-ph/0304215

    ADS  Google Scholar 

  4. Cho, P.L., Misiak, M.: Pys. Rev. D49, 5894 (1994). arXiv:hep-ph/9310332

    ADS  Google Scholar 

  5. Han, T., Valencia, G., Wang, Y.: Phys. Rev. D70, 034002 (2004). arXiv:hep-ph/0405055

    ADS  Google Scholar 

  6. Chen, S.L., Okada, N.: Phys. Lett. B669, 34 (2008). arXiv:hep-ph/0808.0331

    ADS  Google Scholar 

  7. Langacker, P., Plumacher, M.: Phys. Rev. D62, 013006 (2000). arXiv:hep-ph/0001204

    Google Scholar 

  8. Fox, P.J., Liu, J., Tucker-Smith, D., Weiner, N.: Phys. Rev. D84, 115006 (2011). arXiv:hep-ph/1104.4127

    ADS  Google Scholar 

  9. He, X.G., Valencia, G.: Phys. Rev. D70, 053003 (2004). arXiv:hep-ph/0404229

    ADS  Google Scholar 

  10. He, X.G., Valencia, G.: Phys. Rev. D74, 013011 (2006). arXiv:hep-ph/0605202

    ADS  Google Scholar 

  11. He, X.G., Valencia, G.: Phys. Lett. B651, 135 (2007). arXiv:hep-ph/0703270

    ADS  Google Scholar 

  12. Chiang, C.W., Deshpande, N.G., Jiang, J.: JHEP 0608, 075 (2006). arXiv:hep-ph/0606122

    Article  ADS  Google Scholar 

  13. Baek, S., Jeon, J.H., Kim, C.S.: Phys. Lett. B 641, 183 (2006). arXiv:hep-ph/0607113

    Article  ADS  Google Scholar 

  14. Baek, S., Jeon, J.H., Kim, C.S.: Phys. Lett. B664, 84 (2008). arXiv:hep-ph/0803.0062

    ADS  Google Scholar 

  15. Wang, S.-W., Liu, Y.-B., Song, H.-Z.: Int. J. Mod. Phys. A23, 4039 (2008)

    ADS  Google Scholar 

  16. Mohanta, R., Giri, A.K.: Phys. Rev. D79, 057902 (2009). arXiv:hep-ph/0812.1842

    ADS  Google Scholar 

  17. Barger, V., Everett, L., Jiang, J., Langacker, P., Liu, T., Wagner, C.: Phys. Rev. D 80, 055008 (2009) arXiv:hep-ph/0902.4507

    Article  ADS  Google Scholar 

  18. Barger, V., Everett, L.L., Jiang, J., Langacker, P., Liu, T., Wagner, C.E.M.: JHEP 0912, 048 (2009) arXiv:hep-ph/0906.3745

    Article  ADS  Google Scholar 

  19. Everett, L.L., Jiang, J., Langacker, P.G., Liu, T.: Phys. Rev. D82, 094024 (2010). arXiv:hep-ph/0911.5349

    ADS  Google Scholar 

  20. Chen, C.-H.: Phys. Lett. B683, 160 (2010). arXiv:0911.3479

    ADS  Google Scholar 

  21. Aranda, J.I., Ramirez-Zavaleta, F., Toscano, J.J., Tututi, E.S.: J. Phys. G G38, 045006 (2011). arXiv:hep-ph/1007.3326

    Article  ADS  Google Scholar 

  22. Chiang, C.-W., Lin, Y.-F., Tandean, J.: JHEP 1111, 083 (2011). arXiv:hep-ph/1108.3969

    Article  ADS  Google Scholar 

  23. Shelton, J., Zurek, K.M.: Phys. Rev. D83, 091701 (2011). arXiv:hep-ph/1101.5392

    ADS  Google Scholar 

  24. Katirci, N., Azizi, K.: Semileptonic transition of Σ b → Σμ + μ − in family non-universal Z′ model (2012). arXiv:hep-ph/1207.4053

  25. Kim, H.D., Kim, S.G., Shin, S.: D0 dimuon charge asymmetry from B_s system with Z′ couplings and the recent LHCb result (2012). arXiv:hep-ph/1205.6481

  26. Li, X.-Q.,Li, Y.-M., Lu, G.-R., Su, F,: JHEP 1205, 049 (2012). arXiv:hep-ph/1204.5250

    Article  ADS  Google Scholar 

  27. Deshpande, N.G., He, X.-G., Valencia, G.: Phys. Rev. D82, 056013 (2010). arXiv:hep-ph/1006.1682

    ADS  Google Scholar 

  28. Kim, J.E., Seo, M.-S., Shin, S.: Phys. Rev. D83, 036003 (2011). arXiv:hep-ph/1010.5123

    ADS  Google Scholar 

  29. Alok, A.K., Baek, S., London, D.: JHEP 1107, 111 (2011). arXiv:hep-ph/1010.1333

    Article  ADS  Google Scholar 

  30. Burdman, G., Golowich, E., Hewett, J.L., Pakvasa, S.: Phys. Rev. D66, 014009 (2002). arXiv:hep-ph/0112235

    ADS  Google Scholar 

  31. Golowich, E., Hewett, J., Pakvasa, S., Petrov, A.A.: Phys. Rev. D76, 095009 (2007). arXiv:hep-ph/0705.3650

    ADS  Google Scholar 

  32. Xing, Z.-Z., Zhou, S.: Phys. Rev. D75, 114006 (2007). arXiv:hep-ph/0704.0971

    ADS  Google Scholar 

  33. Ball, P.: J. Phys. G. G34, 2199 (2007). arXiv:hep-ph/0704.0786

    Article  ADS  Google Scholar 

  34. Chen, C.-H., Geng, C.-Q.,Yuan, T.-C.,: Phys. Lett. B655, 50 (2007). arXiv:hep-ph/0704.0601

    ADS  Google Scholar 

  35. Buchalla, G., Buras, A.J., Lautenbacher, M.E.: Rev. Mod. Phys. 68, 1125 (1996). arXiv:hep-ph/9512380

    Article  ADS  Google Scholar 

  36. Arhrib, A., Cheung, K., Chiang, C.W., Yuan, T.C.: Phys. Rev. D73, 075015 (2006). arXiv:hep-ph/0602175

    ADS  Google Scholar 

  37. Gupta, S.K., Valencia, G.: Phys. Rev. D82, 035017 (2010). arXiv:hep-ph/1005.4578

    ADS  Google Scholar 

  38. Gupta, S.K.: arXiv:hep-ph/1011.4960

  39. Aranda, J.I., Ramirez-Zavaleta, F., Toscano, J.J., Tututi, E.S.: J. Phys. G. G38, 045006 (2011). arXiv:hep-ph/1007.3326

    Article  ADS  Google Scholar 

  40. Cakir, O., Cakir, I.T., Senol, A., Tasci, A.T.: Eur. Phys. J. C70, 295 (2010). arXiv:hep-ph/1003.3156

    Article  ADS  Google Scholar 

  41. He, X.-G., Valencia, G.: Phys. Lett. B680, 72 (2009). arXiv:hep-ph/0907.4034

    ADS  Google Scholar 

  42. Georgi, H., Jarlskog, C.: Phys. Lett. B86, 297 (1979)

    ADS  Google Scholar 

  43. Cheng, T.P., Sher, M.: Phys. Rev. D35, 3484 (1987)

    ADS  Google Scholar 

  44. He, X.G., Hou, W.S.: Phys. Rev. D 41, 1517 (1990)

    Article  ADS  Google Scholar 

  45. Fritzsch, H., Xing, Z.Z.: Prog. Part. Nucl. Phys. 45, 1 (2000). arXiv:hep-ph/9912358

    Article  ADS  Google Scholar 

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Authors and Affiliations

  1. Iowa State University, Ames, IA, 50011, USA

    German Valencia

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  1. German Valencia
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Correspondence to German Valencia.

Additional information

Work supported in part by DOE under contract number DE-FG02-01ER41155.

The 5th International Symposium on Symmetries in Subatomic Physics (SSP 2012), Groningen, The Netherlands, 18–22 June 2012.

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Valencia, G. Flavor changing neutral currents and a Z′. Hyperfine Interact 214, 31–37 (2013). https://doi.org/10.1007/s10751-013-0805-x

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  • DOI: https://doi.org/10.1007/s10751-013-0805-x

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