207 citations · 1.9k across the 43 of their papers we have counts for
44 papers · 1 filter
Supernova Limits on Muonic Dark Forces
Claudio Andrea Manzari, Jorge Martin Camalich, Jonas Spinner +1
Proto-neutron stars formed during core-collapse supernovae are hot and dense environments that contain a sizable population of muons. If these interact with new long-lived particle…
Flavor Probes of Axion Dark Matter
Robert Ziegler
Standard Model extensions with light axions are well-motivated by the observed Dark Matter abundance and the Peccei-Quinn solution to the Strong CP Problem. In general such axions…
Axion Dark Matter from Lepton flavor-violating Decays
Paolo Panci, Diego Redigolo, Thomas Schwetz +1
We propose simple scenarios where lepton flavor-violating couplings generate the observed dark matter abundance through freeze-in of an axion-like particle with mass in the few keV…
The Charged Higgs from the Bottom-Up: Probing Flavor at the LHC
Nishita Desai, Alberto Mariotti, Mustafa Tabet +1
We systematically study model-independent constraints on the three generic charged Higgs couplings to -quarks and up-type quarks. While existing LHC searches have focussed on th…
New Physics Searches at Kaon and Hyperon Factories
Evgueni Goudzovski, Diego Redigolo, Kohsaku Tobioka +61
Rare meson decays are among the most sensitive probes of both heavy and light new physics. Among them, new physics searches using kaons benefit from their small total decay widths…
Supernova Constraints on Dark Flavored Sectors
Jorge Terol-Calvo
Proto-neutron stars forming a few seconds after core-collapse supernovae are hot and dense environments where hyperons can be efficiently produced by weak processes. By making use…
Flavor-Violating Higgs Decays and Stellar Cooling Anomalies in Axion Models
Marcin Badziak, Giovanni Grilli di Cortona, Mustafa Tabet +1
We study a class of DFSZ-like models for the QCD axion that can address observed anomalies in stellar cooling. Stringent constraints from SN1987A and neutron stars are avoided by s…
Supernova Constraints on Dark Flavored Sectors
Jorge Martin Camalich, Jorge Terol-Calvo, Laura Tolos +1
Proto-neutron stars forming a few seconds after core-collapse supernovae are hot and dense environments where hyperons can be efficiently produced by weak processes. By making use…
Xenon1T excess from electron recoils of non-relativistic Dark Matter
Dario Buttazzo, Paolo Panci, Daniele Teresi +1
We show that electron recoils induced by non-relativistic Dark Matter interactions can fit well the recently reported Xenon1T excess, if they are mediated by a light pseudo-scalar…
Neutrino Observables from a U(2) Flavor Symmetry
Matthias Linster, Jacobo Lopez-Pavon, Robert Ziegler
We study the predictions for CP phases and absolute neutrino mass scale for broad classes of models with a U(2) flavor symmetry. For this purpose we consider the same special textu…
Looking forward to Lepton-flavor-violating ALPs
Lorenzo Calibbi, Diego Redigolo, Robert Ziegler +1
We assess the status of past and future experiments on lepton flavor violating (LFV) muon and tau decays into a light, invisible, axion-like particle (ALP), . We propose a new e…
Three Exceptions to the Grossman-Nir Bound
Robert Ziegler, Jure Zupan, Roman Zwicky
We show that the Grossman-Nir (GN) bound, , can be violated in the presence of light new physics with flavor vio…
Quark Flavor Phenomenology of the QCD Axion
Jorge Martin Camalich, Maxim Pospelov, Pham Ngoc Hoa Vuong +2
Axion models with generation-dependent Peccei-Quinn charges can lead to flavor-changing neutral currents, thus motivating QCD axion searches at precision flavor experiments. We rig…
Probing flavoured Axions in the Tail of
Johannes Albrecht, Emmanuel Stamou, Robert Ziegler +1
We discuss how LHC di-muon data collected to study can be used to constrain light particles with flavour-violating couplings to -quarks. Focussing on the case of a…
Axion-electron decoupling in nucleophobic axion models
Fredrik Björkeroth, Luca Di Luzio, Federico Mescia +3
The strongest upper bounds on the axion mass come from astrophysical observations like the neutrino burst duration of SN1987A, which depends on the axion couplings to nucleons, or…
Flavored Axions
Robert Ziegler
Precision flavor experiments can look for the QCD axion complementarily to usual searches with axion helio- and haloscopes, allowing to test PQ breaking scales as high as $10^{12}…
Quark masses, CKM angles and Lepton Flavour Universality violation
Riccardo Barbieri, Robert Ziegler
A properly defined and suitably broken flavour symmetry leads to successful quantitative relations between quark mass ratios and CKM angles. At the same time the intrinsic d…
Extended Gauge Mediation in the NMSSM with Displaced LHC Signals
Marcin Badziak, Nishita Desai, Cyril Hugonie +1
We analyze models of extended Gauge Mediation in the context of the NMSSM, concentrating on supersymmetric spectra with light gluinos, low fine-tuning and decays of the lightest ne…
Faint Light from Dark Matter: Classifying and Constraining Dark Matter-Photon Effective Operators
Bradley J. Kavanagh, Paolo Panci, Robert Ziegler
Even if Dark Matter (DM) is neutral under electromagnetism, it can still interact with the Standard Model (SM) via photon exchange from higher-dimensional operators. Here we classi…
A Realistic U(2) Model of Flavor
Matthias Linster, Robert Ziegler
We propose a simple model of flavor compatible with an GUT structure. All hierarchies in fermion masses and mixings arise from powers of two small parameters that co…
Minimal Models for Dark Matter and the Muon g-2 Anomaly
Lorenzo Calibbi, Robert Ziegler, Jure Zupan
We construct models with minimal field content that can simultaneously explain the muon g-2 anomaly and give the correct dark matter relic abundance. These models fall into two gen…
A Grand-Unified Nelson-Barr Model
Jakob Schwichtenberg, Paul Tremper, Robert Ziegler
We argue that the Nelson-Barr solution to the Strong CP Problem can be naturally realized in an E Grand-Unified Theory. The chiral SM fermions reside in three generations of E$…
Astrophobic Axions
Luca Di Luzio, Federico Mescia, Enrico Nardi +2
We propose a class of axion models with generation dependent Peccei-Quinn charges for the known fermions that allow to suppress the axion couplings to nucleons and electrons. Astro…
The Axiflavon
Lorenzo Calibbi, Florian Goertz, Diego Redigolo +2
We show that solving the flavor problem of the Standard Model with a simple flavor symmetry naturally leads to an axion that solves the strong CP problem and constitutes a…