Radiative flavor template at the LHC: g-2 and the W mass

Giacomo Cacciapaglia, Antimo Cagnotta, Roberta Calabrese, Francesco Carnevali, Agostino De Iorio, Alberto Orso Maria Iorio, Stefano Morisi, Francesco Sannino

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Abstract

The Standard Model of particle physics and its description of nature have been recently challenged by a series of precision measurements performed via different accelerator machines. Statistically significant anomalies emerged when measuring the muon magnetic momentum, and very recently when deducing the mass of the W boson. Here we consider a radiative extension of the Standard Model devised to be sufficiently versatile to reconcile the various experimental results while further predicting the existence of new bosons and fermions with a mass spectrum in the TeV energy scale. The resulting spectrum is, therefore, within the energy reach of the proton-proton collisions at the LHC experiments at CERN. The model investigated here allows us to interpolate between composite and elementary extensions of the Standard Model with an emphasis on a new modified Yukawa sector that is needed to accommodate the anomalies. Focusing on the radiative regime of the model, we introduce interesting search channels of immediate impact for the ATLAS and CMS experimental programs such as the associate production of Standard Model particles with either invisible or long-lived particles. We further show how to adapt earlier supersymmetry-motivated searchers of new physics to constrain the spectrum and couplings of the new scalars and fermions. Overall, the new physics template simultaneously accounts for the bulk of the observed experimental anomalies while suggesting a wide spectrum of experimental signatures relevant for the current LHC experiments.

OriginalsprogEngelsk
Artikelnummer055033
TidsskriftPhysical Review D
Vol/bind107
Udgave nummer5
Antal sider20
ISSN2470-0010
DOI
StatusUdgivet - mar. 2023

Bibliografisk note

Funding Information:
R. C. and S. M.’s work was supported by the research Grant No. 2017W4HA7S “NAT-NET: Neutrino and Astroparticle Theory Network” under the program PRIN 2017 funded by the Italian Ministero dell’Università e della Ricerca and by the research project Theoretical Astroparticle Physics funded by the Istituto Nazionale di Fisica Nucleare. G. C. is grateful to the LABEX Lyon Institute of Origins (Grant No. ANR-10-LABX-0066) Lyon for its financial support within the program “Investissements d’Avenir” of the French government operated by the National Research Agency.

Publisher Copyright:
© 2023 authors. Published by the American Physical Society. Published by the American Physical Society under the terms of the "https://creativecommons.org/licenses/by/4.0/"Creative Commons Attribution 4.0 International license.

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