Se ha denunciado esta presentación.
Utilizamos tu perfil de LinkedIn y tus datos de actividad para personalizar los anuncios y mostrarte publicidad más relevante. Puedes cambiar tus preferencias de publicidad en cualquier momento.

Koide2014talk

954 visualizaciones

Publicado el

Slides of the talk on Koide Formula. Video should be available at http://viavca.in2p3.fr/alejandro_rivero.html
or directly al flv
http://viavca.in2p3.fr/video/alejandro_rivero.flv

Publicado en: Ciencias

Koide2014talk

  1. 1. Introduction Biblography of Koide Equation Quarks bonus worksheets
  2. 2. nal Koide formula: beyond charged leptons The waterfall in the quark sector Alejandro Rivero Institute for Biocomputation and Physics of Complex Systems (BIFI) Universidad de Zaragoza October 3, 2014 arivero@unizar.es Koide Formula
  3. 3. Introduction Biblography of Koide Equation Quarks bonus worksheets
  4. 4. nal By Koide formula" we refer to a formula found by Y. Koide for charged leptons, exact enough to predict tau mass within experimental limits (me + m + m ) = 2 3 ( p me + p m + p m )2 exp, in MeV: 1882:99 = 1882:97 It was found in the context of composite models of quarks and leptons, but can be produced more generally. More informally, we also call Koide formula to its generalisations and look-alikes other unexplained
  5. 5. ne-tuning... Compare 1882:99=1882:97 = 1:00001 with mtop=174:1 = :995 arivero@unizar.es Koide Formula
  6. 6. Introduction Biblography of Koide Equation Quarks bonus worksheets
  7. 7. nal potential model It is possible consider mi as a composite of two entities with charge Q0 and Qi such that mi / 1 2 Q2 0 + Q0Qi + 1 2 Q2 i and asking the matching conditions P Qi = 0 and P Q2 i = P Q2 0 . From here it is clear that p m can have a negative sign sometimes. The generalisation to more than three particles simply substitutes 3=2 by n=2. Of course, with more particles in the formula, the probability of
  8. 8. nding a random coincidence increases. arivero@unizar.es Koide Formula
  9. 9. Introduction Biblography of Koide Equation Quarks bonus worksheets
  10. 10. nal circle model [MDS, Rosen 2007] suggested to use the notation mk = M0 1 + p 2 cos 2 3 k + 0 2 And particularly for charged leptons: Me = 313:8MeV; e = 0:222 arivero@unizar.es Koide Formula
  11. 11. Introduction Biblography of Koide Equation Quarks bonus worksheets
  12. 12. nal Composites and Cabibbo angle Later observations Recent Work F. Wilczek and A. Zee, Discrete Flavor Symmetries and a Formula for the Cabibbo Angle, Phys. Lett. B 70, 418 (1977) [Erratum-ibid. 72B, 504 (1978)]. tan c = r md ms H. Harari, H. Haut and J. Weyers, Quark Masses And Cabibbo Angles, Phys. Lett. B 78 (1978) 459. mu = 0; md ms = 2

×