Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10637/11780
Título : Fingerprints of heavy scales in electroweak effective Lagrangians
Autor : Pich Zardoya, Antonio.
Rosell Escribá, Ignasi.
Santos Blasco, Joaquín.
Sanz Cillero, Juan José.
Materias: Fingerprints.Huellas dactilares.Particles (Nuclear physics)Partículas (Física nuclear)Quantum chromodynamics.Symmetry (Physics)Lagrange, Funciones de.Lagrangian functions.Cromodinámica cuántica.Simetría (Física)
Fecha de publicación : 4-abr-2017
Editorial : Springer Nature.
Citación : Pich, A., Rosell, I., Santos, J. & Sanz-Cillero, JJ. (2017). Fingerprints of heavy scales in electroweak effective Lagrangians. Journal of High Energy Physics. Basilea (Suiza): Springer Nature. Vol. 2017, i. 4, art. 12 (4 apr.). DOI: https://doi.org/10.1007/JHEP04(2017)012
Resumen : The couplings of the electroweak e ective theory contain information on the heavy-mass scales which are no-longer present in the low-energy Lagrangian. We build a general e ective Lagrangian, implementing the electroweak chiral symmetry breaking SU(2)L SU(2)R ! SU(2)L+R, which couples the known particle elds to heavier states with bosonic quantum numbers JP = 0 and 1 . We consider colour-singlet heavy elds that are in singlet or triplet representations of the electroweak group. Integrating out these heavy scales, we analyze the pattern of low-energy couplings among the light elds which are generated by the massive states. We adopt a generic non-linear realization of the electroweak symmetry breaking with a singlet Higgs, without making any assumption about its possible doublet structure. Special attention is given to the di erent possible descriptions of massive spin-1 elds and the di erences arising from naive implementations of these formalisms, showing their full equivalence once a proper short-distance behaviour is required.
Descripción : Este artículo se encuentra disponible en la siguiente URL: https://link.springer.com/article/10.1007%2FJHEP04%282017%29012
URI : http://hdl.handle.net/10637/11780
Derechos: http://creativecommons.org/licenses/by/4.0/deed.es
ISSN : 1126-6708
1029-8479 (Electrónico)
Aparece en las colecciones: Dpto. Matemáticas, Física y Ciencias Tecnológicas

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