New PDF release: Asymmetry in the Proper Motions and Radial Velocities of

New PDF release: Asymmetry in the Proper Motions and Radial Velocities of

By Perrine C. D.

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16] SU(5) with E (H,H) representing Higgs fields in the 24 (5,5) representation. While the mass of E is expected to be O(Mu), that of the weak doublet parts of H and H should be of 0(MW). c/(E), where gu is the unified gauge coupling strength. 3, where the wiggly lines represent gauge bosons of the SU(5) theory. If we take momentum scales at the two external H and E lines to be of order Mw and Mv respectively, we shall have A(M 2 ,)~A(M 2 ) + ! | , l n ^ . 6) The induced mass of all components of H is A(E)2.

Likhtman, JETP Lett. 13 (1971) 3214. M. Shifman, op. cit, Bibl. V. P. Akulov, Phys. Lett. B46 (1973) 109. J. P. Akulov, op. , Bibl. 5] J. Wess and B. Zumino, Nucl. Phys. B70 (1974) 39. A. Salam and J. Strathdee, Nucl. Phys. B76 (1974) 477; loc. cit, Bibl. 6] J. Wess and B. Zumino, Phys. Lett. 49B (1974) 52. J. Iliopoulos and B. Zumino, Nucl. Phys. B76 (1974) 310. S. Ferrara, J. Iliopoulos and B. Zumino, Nucl. Phys. B77 (1974) 41. A. Salam and J. Strathdee, Nucl. Phys. B76 (1974) 477; Phys. Rev.

1) A small coefficient 5n is "naturally small" only if cn>0 — 0, since then the corresponding coefficient will remain small in the full effective low energy Lagrangian density as well. 1) involving powers of products of different <5„'s, but they do not change the discussion in substance. 1. History and Motivation 7 perturbation theory. Illustrative examples are gauge symmetries "protecting" gauge couplings and chiral symmetries "protecting" fermion masses or Yukawa couplings. (2) On the other hand, if cn,0 ^ 0, there is no reason to assume Sn to be small or zero in the tree level low energy Lagrangian density; such a choice would be "unnatural".

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