207 citations · 1.5k across the 48 of their papers we have counts for
45 papers · 1 filter
When CP requires , not
Luca Vecchi
Imposing CP or P forces the QCD topological angle to be either or . However, only the former is phenomenologically viable. This implies that the assumption of CP…
Conformal Leptogenesis in Composite Higgs Models
Kaustubh Agashe, Peizhi Du, Majid Ekhterachian +3
We study the generation of the baryon asymmetry in Composite Higgs models with partial compositeness of the Standard Model (SM) fermions and heavy right-handed neutrinos, developin…
Vector-like symmetries and parity conservation in gauge theories with Yukawa couplings
Alessandro Valenti, Luca Vecchi
Non-perturbative results in QCD-like theories can be derived employing positivity of the Euclidean path integral measure, as pioneered by Weingarten, Vafa, Witten. We show that pos…
Perturbative running of the topological angles
Alessandro Valenti, Luca Vecchi
We argue that in general renormalizable field theories the topological angles may develop an additive beta function starting no earlier than 2-loop order. The leading expression is…
Grand Color Axion
Alessandro Valenti, Luca Vecchi, Ling-Xiao Xu
We present a model that solves the strong CP problem via an axion parametrically heavier than the standard one. Within this picture the Standard Model quarks are embedded into a la…
Gauge Invariance and Finite Counterterms in Chiral Gauge Theories
Claudia Cornella, Ferruccio Feruglio, Luca Vecchi
We derive the finite one-loop counterterm required to restore the Ward Identities broken by the regularization scheme in chiral gauge theories. Our result is an analytic expression…