Results 21 to 30 of about 540 (118)

Radiative corrections relating leptoquark-fermion couplings probed at low and high energy

Journal of High Energy Physics
Scalar leptoquarks (LQ) with masses between 2 TeV and 50 TeV are prime candidates to explain deviations between measurements and Standard-Model predictions in decay observables of b-flavored hadrons (“flavor anomalies”).
Innes Bigaran, Rodolfo Capdevilla, Ulrich Nierste   +2 more
doaj   +1 more source

Resonant anomaly detection with multiple reference datasets

Journal of High Energy Physics, 2023
An important class of techniques for resonant anomaly detection in high energy physics builds models that can distinguish between reference and target datasets, where only the latter has appreciable signal.
Mayee F. Chen, Benjamin Nachman, Frederic Sala   +2 more
doaj   +1 more source

How many 1-loop neutrino mass models are there?

Journal of High Energy Physics, 2022
It is well-known that at tree-level the d = 5 Weinberg operator can be generated in exactly three different ways, the famous seesaw models. In this paper we study the related question of how many phenomenologically consistent 1-loop models one can ...
Carolina Arbeláez, Ricardo Cepedello, Juan Carlos Helo, Martin Hirsch, Sergey Kovalenko   +4 more
doaj   +1 more source

Oblique corrections from leptoquarks

Journal of High Energy Physics, 2023
We present general formulas for the oblique-correction parameters S, T, U, V, W, and X in a model of New Physics having arbitrary numbers of scalar leptoquarks of the five permissible types.
Francisco Albergaria, Luís Lavoura
doaj   +1 more source

Neutrino dipole portal at a high energy μ−collider

Journal of High Energy Physics
We study the phenomenology of d = 6 dipole portal operators connecting active and sterile neutrinos at a futuristic muon collider. These operators can be the dominant portal between the Standard Model and the New Physics sector in scenarios in which the ...
Daniele Barducci, Alessandro Dondarini
doaj   +1 more source

Interpreting electroweak precision data including the W-mass CDF anomaly

Journal of High Energy Physics, 2022
We perform a global fit of electroweak data, finding that the anomaly in the W mass claimed by the CDF collaboration can be reproduced as a universal new-physics correction to the T parameter or |H † D μ H|2 operator.
Alessandro Strumia
doaj   +1 more source

Neutrino masses in the mirror twin Higgs with spontaneous ℤ 2 breaking

Journal of High Energy Physics
We introduce a mirror twin Higgs model with spontaneous ℤ 2 symmetry breaking that ameliorates the constraints in twin Higgs cosmology and, at the same time, generates the Standard Model neutrino masses.
Pedro Bittar, Davi B. Costa, Gustavo Burdman   +2 more
doaj   +1 more source

Perturbative unitarity constraints on generic vector interactions

Journal of High Energy Physics, 2023
We study perturbative unitarity constraints on generic interactions between fermion and vector fields, which are allowed to have generic quantum numbers under a Π i SU(N i ) ⨂ U(1) group.
Daniele Barducci, Marco Nardecchia, Claudio Toni   +2 more
doaj   +1 more source

Lessons from the LHCb measurement of CP violation in B s → K + K −

Journal of High Energy Physics, 2022
The LHCb experiment measured the time-dependent CP asymmetries C KK and S KK in B s → K + K − decay. Combining with the corresponding CP asymmetries C ππ and S ππ in B → π + π − decay, we find that the size of U-spin breaking in this system is of order ...
Yosef Nir, Inbar Savoray, Yehonatan Viernik   +2 more
doaj   +1 more source

Di-Higgs signatures in neutral naturalness

Journal of High Energy Physics
The Higgs boson was the last fundamental piece of the Standard Model to be experimentally confirmed. LHC is embarked in a quest to probe the possibility that this particle provides a portal to new physics.
Mario W. Barela, Rodolfo Capdevilla
doaj   +1 more source