Abstract
Since the Standard Model most probably cannot explain the large value of CP asymmetries recently observed in D-meson decays we propose the fourth quark-lepton generation explanation of it. As a byproduct weakly mixed leptons of the fourth generation make it possible to save the baryon number of the Universe from erasure by sphalerons. An impact of the 4th generation on BBN is briefly discussed.
Similar content being viewed by others
References
R. Aaij, C. Abellan Beteta, B. Adeva, et al., Phys. Rev. Lett. 108, 111602 (2012).
T. Aaltonen, B. Álvarez Conzálezz, S. Amerio, et al., arXiv:1207.2158 (2012).
G. Isisdori, J. Kamenik, Z. Ligeti, and G. Perez, Phys. Lett. B 711, 46 (2012).
K. Nakamura, K. Hagiwara, K. Hikasa, et al. (Particle Data Group), J. Phys. G 37, 075021 (2010).
J. Brod, A. L. Kogan, and J. Zupan, arXiv:1111.5000 (2011).
A. J. Buras, M. Jamin, M. E. Lautenbacher, et al., Nucl. Phys. B 370, 69 (1992).
A. B. Kaidalov and M. I. Vysotsky, Phys. At. Nucl. 72, 2126 (2009).
A. Vainshtein, hep-ph/9906263 (1999).
A. N. Rozanov and M. I. Vysotsky, JETP Lett. 95, 397 (2012).
S. Nandi and A. Soni, Phys. Rev. D 83, 114510 (2011).
K. Dick, M. Lindner, M. Ratz, and D. Wright, Phys. Rev. Lett. 84, 4039 (2000).
H. Murayama, V. Rentala, J. Shu, and T. Yanagida, Phys. Lett. B 705, 208 (2011).
O. Eberhardt, G. Herbert, H. Lacker, et al., arXiv:1204.3872 (2012).
K. Ackerstaff, G. Alexander, J. Allison, et al., Eur. Phys. J. C 1, 45 (1998); P. Achard, O. Adriani, M. Aguilar-Benitez, et al., Phys. Lett. B 517, 75 (2001).
H.-S. Lee, Z. Liu, and A. Soni, Phys. Lett. B 704, 30 (2011).
R. A. Sunyaev and Ya. B. Zeldovich, Astrophys. Space Sci. 20, 20 (1970); A. F. Illarionov and R. A. Sunyaev, Astron. J. 51, 698 (1974).
Y. I. Izotov and T. X. Thuan, Astrophys. J. 710, L67 (2010); E. Aver, K. A. Olive, and E. D. Skillman, JCAP 1103, 043 (2011); E. Aver, K. A. Olive, and E. D. Skillman, JCAP 1005, 003 (2010).
D. S. Gorbunov and V. A. Rubakov, Introduction to the Theory of the Early Universe: Hot Big Bang Theory (World Scientific, Singapore, 2011; URSS, Moscow, 2008).
Author information
Authors and Affiliations
Additional information
The article is published in the original.
Rights and permissions
About this article
Cite this article
Dolgov, A.D., Godunov, S.I., Rozanov, A.N. et al. Charmed penguin versus BAU. Jetp Lett. 96, 290–297 (2012). https://doi.org/10.1134/S0021364012170055
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1134/S0021364012170055