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CP violation at one loop in the polarization-independent chargino production in e+e− collisions

K. Rolbiecki and J. Kalinowski

  • Institute of Theoretical Physics, University of Warsaw, Hoża 69, PL–00681 Warsaw, Poland

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Phys. Rev. D 76, 115006 – Published 6 December, 2007

DOI: https://doi.org/10.1103/PhysRevD.76.115006

Abstract

Recently Osland and Vereshagin noticed, based on sample calculations of some box diagrams, that in unpolarized e+e− collisions CP-odd effects in the nondiagonal chargino-pair production process are generated at one loop. Here we perform a full one-loop analysis of these effects and point out that in some cases the neglected vertex and self-energy contributions may play a dominant role. We also show that CP asymmetries in chargino production are sensitive not only to the phase of μ parameter in the chargino sector but also to the phase of stop trilinear coupling At.

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References (18)

  1. A. G. Cohen, D. B. Kaplan, and A. E. Nelson, Annu. Rev. Nucl. Part. Sci. 43, 27 (1993); B. M. Gavela, P. Hernandez, J. Orloff, O. Pène, and C. Quimbay, Nucl. Phys. B430, 382 (1994); V. A. Rubakov and M. E. Shaposhnikov, Usp. Fiz. Nauk 166, 493 (1996).
  2. S. Pokorski, J. Rosiek, and C. A. Savoy, Nucl. Phys. B570, 81 (2000); V. Barger, T. Falk, T. Han, J. Jiang, T. Li, and T. Plehn, Phys. Rev. D 64, 056007 (2001).
  3. Y. Kizukuri and N. Oshimo, Phys. Rev. D 46, 3025 (1992); T. Ibrahim and P. Nath, 58, 111301 (1998); 60, 099902(E) (1999); 61, 093004 (2000); M. Brhlik, G. J. Good and G. L. Kane, 59, 115004 (1999); S. Abel, S. Khalil, and O. Lebedev, Nucl. Phys. B606, 151 (2001); R. Arnowitt, B. Dutta, and Y. Santoso, Phys. Rev. D 64, 113010 (2001); T. Ibrahim and P. Nath, arXiv:0705.2008.
  4. Y. Kizukuri and N. Oshimo, arXiv:hep-ph/9310224.
  5. A. Bartl, H. Fraas, O. Kittel, and W. Majerotto, Phys. Rev. D 69, 035007 (2004); A. Bartl, T. Kernreiter, and O. Kittel, Phys. Lett. B 578, 341 (2004); A. Bartl, K. Hohenwarter-Sodek, T. Kernreiter, and H. Rud, Eur. Phys. J. C 36, 515 (2004); A. Bartl, H. Fraas, S. Hesselbach, K. Hohenwarter-Sodek, T. Kernreiter, and G. A. Moortgat-Pick, J. High Energy Phys. 01 (2006) 170; A. Bartl, K. Hohenwarter-Sodek, T. Kernreiter, and O. Kittel, 09 (2007) 079; S. Y. Choi, M. Drees, and J. Song, 09 (2006) 064.
  6. A. Bartl, H. Fraas, O. Kittel, and W. Majerotto, Phys. Lett. B 598, 76 (2004); O. Kittel, A. Bartl, H. Fraas, and W. Majerotto, Phys. Rev. D 70, 115005 (2004).
  7. S. Y. Choi, J. Kalinowski, G. A. Moortgat-Pick, and P. M. Zerwas, Eur. Phys. J. C 22, 563 (2001); 23, 769(A) (2002); J. Kalinowski, Acta Phys. Pol. B 34, 3441 (2003).
  8. S. Y. Choi, Phys. Rev. D 69, 096003 (2004); S. Y. Choi, B. C. Chung, J. Kalinowski, Y. G. Kim, and K. Rolbiecki, Eur. Phys. J. C 46, 511 (2006).
  9. P. Osland and A. Vereshagin, Phys. Rev. D 76, 036001 (2007).
  10. S. Y. Choi, A. Djouadi, H. K. Dreiner, J. Kalinowski, and P. M. Zerwas, Eur. Phys. J. C 7, 123 (1999); S. Y. Choi, A. Djouadi, H. S. Song, and P. M. Zerwas, 8, 669 (1999); S. Y. Choi, M. Guchait, J. Kalinowski, and P. M. Zerwas, Phys. Lett. B 479, 235 (2000); S. Y. Choi, A. Djouadi, M. Guchait, J. Kalinowski, H. S. Song, and P. M. Zerwas, Eur. Phys. J. C 14, 535 (2000).
  11. TESLA Technical Design Report, Part III, “Physics at an e+e− Linear Collider,” edited by R.-D. Heuer, D. Miller, F. Richard, and P. Zerwas, DESY Report No. DESY 2001-011; T. Abe et al. (American Linear Collider Working Group Collaboration), in Proceedings of the APS/DPF/DPB Summer Study on the Future of Particle Physics, Snowmass, CO, 2001, edited by N. Graf, arXiv:hep-ex/0106056; K. Abe et al., ILC Roadmap Report, in Proceedings of the ACFA LC Symposium, Tsukuba, Japan, 2003, http://lcdev.kek.jp/RMdraft/.
  12. J. Küblbeck, M. Bohm, and A. Denner, Comput. Phys. Commun. 60, 165 (1990); T. Hahn, 140, 418 (2001); T. Hahn and M. Perez-Victoria, 118, 153 (1999); T. Hahn and C. Schappacher, 143, 54 (2002).
  13. G. J. van Oldenborgh, Comput. Phys. Commun. 66, 1 (1991); T. Hahn, Acta Phys. Pol. B 30, 3469 (1999).
  14. T. Fritzsche and W. Hollik, Nucl. Phys. B, Proc. Suppl. 135, 102 (2004); W. Oller, H. Eberl, and W. Majerotto, Phys. Rev. D 71, 115002 (2005).
  15. W. Siegel, Phys. Lett. B 84, 193 (1979); D. M. Capper, D. R. T. Jones, and P. van Nieuwenhuizen, Nucl. Phys. B167, 479 (1980); D. Stöckinger, J. High Energy Phys. 03 (2005) 076.
  16. A. Denner, Fortschr. Phys. 41, 307 (1993).
  17. P. Osland, J. Kalinowski, K. Rolbiecki, and A. Vereshagin, arXiv:0709.3358.
  18. J. A. Aguilar-Saavedra et al., Eur. Phys. J. C 46, 43 (2006).

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Phys. Rev. D 76, 115006– Published 6 December, 2007
  • Received 2 October 2007

© 2007 American Physical Society

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