Using lattice simulations we demonstrate from first principles the existence of a nonperturbative mechanism for elementary particle mass generation in models with gauge fields, fermions, and scalars, if an exact invariance forbids power divergent fermion masses and fermionic chiral symmetries broken at UV scale are maximally restored. We show that in the Nambu-Goldstone phase a fermion mass term, unrelated to the Yukawa operator, is dynamically generated. In models with electroweak interactions weak boson masses are also generated, opening new scenarios for beyond the standard model physics.

Capitani, S., Dimopoulos, P., Frezzotti, R., Garofalo, M., Kostrzewa, B., Pittler, F., et al. (2019). Dynamical Generation of Elementary Fermion Mass: First Lattice Evidence. PHYSICAL REVIEW LETTERS, 123(6), 061802 [10.1103/PhysRevLett.123.061802].

Dynamical Generation of Elementary Fermion Mass: First Lattice Evidence

Frezzotti R.
;
2019-08-09

Abstract

Using lattice simulations we demonstrate from first principles the existence of a nonperturbative mechanism for elementary particle mass generation in models with gauge fields, fermions, and scalars, if an exact invariance forbids power divergent fermion masses and fermionic chiral symmetries broken at UV scale are maximally restored. We show that in the Nambu-Goldstone phase a fermion mass term, unrelated to the Yukawa operator, is dynamically generated. In models with electroweak interactions weak boson masses are also generated, opening new scenarios for beyond the standard model physics.
9-ago-2019
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore FIS/02 - FISICA TEORICA, MODELLI E METODI MATEMATICI
English
elementary particle mass generation, non-perturbative mechanism, quantum anomaly, lattice simulations
http://inspirehep.net/record/1717186?ln=en
Capitani, S., Dimopoulos, P., Frezzotti, R., Garofalo, M., Kostrzewa, B., Pittler, F., et al. (2019). Dynamical Generation of Elementary Fermion Mass: First Lattice Evidence. PHYSICAL REVIEW LETTERS, 123(6), 061802 [10.1103/PhysRevLett.123.061802].
Capitani, S; Dimopoulos, P; Frezzotti, R; Garofalo, M; Kostrzewa, B; Pittler, F; Rossi, Gc; Urbach, C
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/224727
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