Baryon Asymmetry of the Universe from Lepton Flavor Violation

Article Physics, Multidisciplinary

Test of lepton universality in beauty-quark decays

R. Aaij et al.

NATURE PHYSICS (2022)

Article Physics, Multidisciplinary

Cosmology Meets Functional QCD: First-Order Cosmic QCD Transition Induced by Large Lepton Asymmetries

Fei Gao et al.

Summary: This study calculates the cosmic trajectory during the cosmic QCD epoch in the presence of large lepton flavor asymmetries and reveals the possibility of a first-order cosmic QCD transition.

PHYSICAL REVIEW LETTERS (2022)

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Article Physics, Particles & Fields

Muonic force behind flavor anomalies

Admir Greljo et al.

Summary: We develop an economical theoretical framework to explain various flavor physics anomalies and propose models that can resolve these tensions without conflicting other constraints. These models will be tested in future experiments.

JOURNAL OF HIGH ENERGY PHYSICS (2022)

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Article Physics, Particles & Fields

Charged lepton flavor violation in light of muon g-2

Wei-Shu Hou et al.

Summary: The recent confirmation of the muon g - 2 anomaly may lead to a new era in mu and tau physics. Using a general two Higgs doublet model, the discrepancy can be explained, leading to enhanced rates of charged lepton flavor violating processes. Further experiments are needed to explore these predictions and potentially access new physics beyond the Standard Model.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Z lepton flavour violation as a probe for new physics at future e+ e- colliders

Lorenzo Calibbi et al.

Summary: In this study, the potential of discovering new physics through lepton-flavour-violating decays of the Z boson at circular e(+)e(-) colliders CEPC and FCC-ee is assessed. It is found that a Tera Z factory shows promise for detecting New Physics through Z -> tau l decays.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Implications of the Muon g-2 result on the flavour structure of the lepton mass matrix

Lorenzo Calibbi et al.

Summary: The Muon g-2 experiment at Fermilab confirmed the possibility of new physics at low energy scales and indicated that low energy could potentially explain the discrepancy with the Standard Model predictions of the anomalous magnetic moment. In addition, lepton flavor violating processes can also constrain the flavor symmetries predicting these structures, as shown by the experiment.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Particles & Fields

Predictions for axion couplings from ALP cogenesis

Raymond T. Co et al.

Summary: By adding the axion-like particle (ALP) to the Standard Model and considering the field velocity in the early universe, researchers have proposed the ALP cogenesis theory to explain the densities of baryons and dark matter simultaneously, with predicted couplings between ALP and photons, nucleons, and/or electrons. The predicted couplings are orders of magnitude larger than those for the QCD axion and conventional ALP misalignment mechanism for dark matter. As a result, ALP cogenesis is within reach of future experimental ALP searches and dark matter studies.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Lepto-axiogenesis

Raymond T. Co et al.

Summary: A new mechanism for baryogenesis is proposed, utilizing the rotation of the PQ field and the dimension-five operator for Majorana neutrino masses. The study also explores the production of QCD axion dark matter and its connection to baryon asymmetry, as well as the potential signals in rare kaon decays from the radial component of the PQ field.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Review Physics, Particles & Fields

Averages of b-hadron, c-hadron, and τ-lepton properties as of 2018 Heavy Flavor Averaging Group (HFLAV)

Y. Amhis et al.

Summary: This paper reports world averages of measurements of b-hadron, c-hadron, and tau-lepton properties obtained by the Heavy Flavour Averaging Group using results available through September 2018. Adjustments are made to common input parameters used in various analyses to common values, taking known correlations into account. The averages include branching fractions, lifetimes, neutral meson mixing parameters, CP violation parameters, parameters of semileptonic decays, and Cabibbo-Kobayashi-Maskawa matrix elements.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Multidisciplinary

Measurement of the Positive Muon Anomalous Magnetic Moment to 0.46 ppm

B. Abi et al.

Summary: The experiment presented the first results of the Fermilab National Accelerator Laboratory (FNAL) Muon g - 2 Experiment for the positive muon magnetic anomaly a(mu) (g(mu) - 2)/2, which determined the anomaly from precision measurements of two angular frequencies. The result showed a deviation of 3.3 standard deviations from the standard model prediction, in agreement with previous measurements, increasing the tension between experiment and theory.

PHYSICAL REVIEW LETTERS (2021)

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Article Physics, Particles & Fields

Flavoured warped axion

Quentin Bonnefoy et al.

Summary: This study considers a 5D extension of the DFSZ axion model that addresses axion quality and fermion mass hierarchy problems. It predicts flavor-dependent, off-diagonal axion-fermion couplings, with different localization methods of Higgs doublets affecting the couplings in both diagonal and off-diagonal flavors.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Unified framework for B-anomalies, muon g-2 and neutrino masses

K. S. Babu et al.

Summary: The model proposes a mechanism for radiative neutrino masses involving TeV-scale leptoquark scalars, resolving anomalies in various decay processes. The fits to neutrino oscillation parameters satisfy flavor constraints and explain anomalies within 1 sigma, while also presenting upper limits on the Yukawa couplings of the leptoquarks.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Ultralight scalars in leptonic observables

Pablo Escribano et al.

Summary: This work explores the phenomenology of ultralight scalar states in low-energy leptonic observables, discussing their interactions with charged leptons and their roles in various processes. Model independent approach is adopted to study the diagonal couplings to charged leptons and processes involving direct production or mediation by the ultralight scalar phi. Contributions to the charged leptons magnetic and electric moments are also examined.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Charged lepton flavor violation in light of the muon magnetic moment anomaly and colliders

Tong Li et al.

Summary: Observations of charged lepton flavor violation suggest the presence of new physics beyond the Standard Model in the charged lepton sector, which may impact the muon magnetic moment. By studying the general Standard Model Lagrangian of Delta L = 0 bileptons with CLFV couplings, researchers have investigated the relationship between low-energy precision experiments and colliders in light of the muon magnetic moment anomaly. The sensitivity of the LHC, MACE experiment, muonium-antimuonium conversion experiment, and muon collider in probing unexplored parameter space via the CLFV process has been demonstrated.

EUROPEAN PHYSICAL JOURNAL C (2021)

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Article Physics, Multidisciplinary

Wash-In Leptogenesis

Valerie Domcke et al.

Summary: This mechanism, wash-in leptogenesis, operates at low masses of right-handed neutrinos without requiring CP violation, even in the regime of strong wash-out. By generalizing standard freeze-out leptogenesis to a nonminimal cosmological background, it allows for the generation of a nonvanishing B - L asymmetry using chemical potentials generated at high temperatures.

PHYSICAL REVIEW LETTERS (2021)

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Article Astronomy & Astrophysics

A model of muon anomalies

Admir Greljo et al.

Summary: The study extends the Standard Model by introducing U(1)(B-3L mu) gauge symmetry, three right-handed neutrinos, and other elements. By breaking the symmetry, a series of interesting phenomena are observed, and the seesaw mechanism is successfully implemented.

PHYSICS LETTERS B (2021)

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Article Physics, Particles & Fields

Muon g - 2 in gauge mediation without SUSY CP problem

Masahiro Ibe et al.

Summary: The paper discusses gauge mediated supersymmetry breaking models that explain the muon anomalous magnetic moment and Higgs boson mass simultaneously, proposing a model that addresses the violation of GUT relation and CP problem. The model successfully explains the phenomena while remaining free from limitations caused by subdominant gravity mediation effects.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Spontaneous CP violation and horizontal symmetry in the MSSM: toward lepton flavor naturalness

Daniel Aloni et al.

Summary: We study the contributions of supersymmetric models with a U(1) horizontal symmetry and only spontaneous CP breaking to lepton flavor observables, showing that a horizontal symmetry and lack of explicit CP violation can alleviate existing bounds. The undetermined O(1) coefficients in such mass matrix models complicate the interpretation of the bounds from flavor observables, leading to the definition of a new fine-tuning measure for different observables to study the naturalness of observed flavor observables in given mass matrix models. Our flavor-naturalness measure is used in studying supersymmetric models to quantify the degree of fine tuning required by the bounds from various lepton flavor observables at different mass scales.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Physics, Particles & Fields

Global analysis of leptophilic Z′ bosons

Andrzej J. Buras et al.

Summary: Research indicates that leptophilic Z' bosons are subjected to stringent limits in precision observables and decays, leading to interesting quantum effects. In some scenarios, correlations may exist, particularly when additional constraints are imposed.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Multidisciplinary Sciences

The Search for μ+ → e+γ with 10-14 Sensitivity: The Upgrade of the MEG Experiment

Alessandro M. Baldini et al.

Summary: The MEG experiment at the Paul Scherrer Institute tested the violation of lepton flavor conservation law and published the most stringent limit on the charged lepton flavor violating decay. The MEG II detector has been upgraded to improve sensitivity, aiming to achieve the highest possible sensitivity using the full muon beam intensity. The main improvements include better rate capability of all sub-detectors and improved resolutions while keeping the same detector concept.

SYMMETRY-BASEL (2021)

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Article Astronomy & Astrophysics

Gravitational Waves from the Cosmological Quark-Hadron Phase Transition Revisited

Pauline Lerambert-Potin et al.

Summary: The paper explores the gravitational wave background generated during the QCD phase transition, using equations of state for quark-gluon plasma and estimating the duration of the transition. While the signal generated was unable to explain the claimed NANOGrav signal, the expected QCD gravitational wave background could potentially be detected by the planned Big Bang Observer for frequencies above 1.0 mHz.

UNIVERSE (2021)

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Article Astronomy & Astrophysics

Hunting for CP-violating axionlike particle interactions

Luca Di Luzio et al.

Summary: This study systematically investigates the impact of ALPs on the search for permanent EDMs of various particles. It emphasizes the high sensitivity of EDMs to CP-violating ALP interactions using both current and projected experimental sensitivities. The researchers evaluated the leading short-distance effects on EDMs at two-loop order by assuming the most general ALP effective field theory.

PHYSICAL REVIEW D (2021)

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Article Physics, Particles & Fields

Looking forward to lepton-flavor-violating ALPs

Lorenzo Calibbi et al.

Summary: The text discusses the status of experiments on lepton flavor violating muon and tau decays into light, invisible axion-like particles. A new experimental setup for MEG II, called MEGII-fwd, is proposed to enhance sensitivity to LFV ALPs, with the ability to probe an unexplored region well beyond existing astrophysical constraints. The experimental campaign aims to explore LFV muon decays into ALPs, potentially shedding light on neutrino masses, the strong CP problem, and the SM flavor puzzle.

JOURNAL OF HIGH ENERGY PHYSICS (2021)

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Article Astronomy & Astrophysics

New perspective in searching for axionlike particles from flavor physics

Hiroyuki Ishida et al.

Summary: A new perspective has been proposed for the search of axionlike particles (ALPs) through measurements in quark and lepton flavor physics, particularly focusing on the sweetest spots at around the pion mass scale where unexplored loopholes exist in the ALP parameter space. Proposed complementary probes can accurately determine the ALP coupling to photons at these sweetest spots/loopholes, helping to cover the entire parameter space in the ALP search, including existing loopholes in the future.

PHYSICAL REVIEW D (2021)

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Article Physics, Particles & Fields

Hunting for ALPs with lepton flavor violation

Claudia Cornella et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Multidisciplinary

COMET Phase-I technical design report

R. Abramishvili et al.

PROGRESS OF THEORETICAL AND EXPERIMENTAL PHYSICS (2020)

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Article Physics, Multidisciplinary

Axiogenesis

Raymond T. Co et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Multidisciplinary

Axionlike Particles, Lepton-Flavor Violation, and a New Explanation of aμ and ae

Martin Bauer et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Particles & Fields

Probing eμ flavor-violating ALP at Belle II

Motoi Endo et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Physics, Multidisciplinary

Axion Kinetic Misalignment Mechanism

Raymond T. Co et al.

PHYSICAL REVIEW LETTERS (2020)

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Article Physics, Particles & Fields

Spontaneous baryogenesis from axions with generic couplings

Valerie Domcke et al.

JOURNAL OF HIGH ENERGY PHYSICS (2020)

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Article Astronomy & Astrophysics

Addressing RD(), RK(), muon g-2 and ANITA anomalies in a minimal R-parity violating supersymmetric framework

Wolfgang Altmannshofer et al.

PHYSICAL REVIEW D (2020)

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Article Astronomy & Astrophysics

Equilibration of right-handed electrons

Dietrich Boedeker et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

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Article Physics, Multidisciplinary

Search for Lepton-Universality Violation in B+ → K+l+l- Decays

R. Aaij et al.

PHYSICAL REVIEW LETTERS (2019)

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Article Astronomy & Astrophysics

Baryogenesis from axion inflation

Valerie Domcke et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2019)

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Article Astronomy & Astrophysics

Effects of the QCD equation of state and lepton asymmetry on primordial gravitational waves

Fazlollah Hajkarim et al.

PHYSICAL REVIEW D (2019)

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Article Physics, Particles & Fields

The design of the MEG II experiment

A. M. Baldini et al.

EUROPEAN PHYSICAL JOURNAL C (2018)

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Article Physics, Particles & Fields

The quest for μ → eγ and its experimental limiting factors at future high intensity muon beams

G. Cavoto et al.

EUROPEAN PHYSICAL JOURNAL C (2018)

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Article Physics, Nuclear

Flavor effects in leptogenesis

P. S. B. Dev et al.

INTERNATIONAL JOURNAL OF MODERN PHYSICS A (2018)

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Article Astronomy & Astrophysics

Phenomenology of fermion production during axion inflation

Peter Adshead et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2018)

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Article Physics, Particles & Fields

Flavourful axion phenomenology

Fredrik Bjorkeroth et al.

JOURNAL OF HIGH ENERGY PHYSICS (2018)

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Article Astronomy & Astrophysics

Gauge field and fermion production during axion inflation

Valerie Domcke et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2018)

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Article Physics, Multidisciplinary

Cosmic QCD Epoch at Nonvanishing Lepton Asymmetry

Mandy M. Wygas et al.

PHYSICAL REVIEW LETTERS (2018)

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Article Physics, Multidisciplinary

Improved constraints on lepton asymmetry from the cosmic microwave background

Isabel M. Oldengott et al.

EPL (2017)

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Article Physics, Particles & Fields

Test of lepton universality with B0 → K*0l+l- decays

R. Aaij et al.

JOURNAL OF HIGH ENERGY PHYSICS (2017)

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Article Physics, Particles & Fields

Search for the lepton flavour violating decay μ+ → e+ γ with the full dataset of the MEG experiment

A. M. Baldini et al.

EUROPEAN PHYSICAL JOURNAL C (2016)

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Article Astronomy & Astrophysics

Baryogenesis from symmetry principle

Chee Sheng Fong

PHYSICS LETTERS B (2016)

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Article Astronomy & Astrophysics

Evolution of the baryon asymmetry through the electroweak crossover in the presence of a helical magnetic field

Kohei Kamada et al.

PHYSICAL REVIEW D (2016)

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Article Astronomy & Astrophysics

Baryogenesis from decaying magnetic helicity

Kohei Kamada et al.

PHYSICAL REVIEW D (2016)

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Article Astronomy & Astrophysics

Fermion production during and after axion inflation

Peter Adshead et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2015)

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Article Astronomy & Astrophysics

Falsifying high-scale baryogenesis with neutrinoless double beta decay and lepton flavor violation

Frank F. Deppisch et al.

PHYSICAL REVIEW D (2015)

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Article Physics, Multidisciplinary

Lepton Flavor Violation in B Decays?

Sheldon L. Glashow et al.

PHYSICAL REVIEW LETTERS (2015)

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Article Astronomy & Astrophysics

Cloistered baryogenesis

D. Aristizabal Sierra et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2014)

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Article Astronomy & Astrophysics

Spectator effects during Leptogenesis in the strong washout regime

Bjoern Garbrecht et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2014)

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Article Physics, Multidisciplinary

Sphaleron Rate in the Minimal Standard Model

Michela D'Onofrio et al.

PHYSICAL REVIEW LETTERS (2014)

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Article Physics, Particles & Fields

Testing new physics with the electron g-2

G. F. Giudice et al.

JOURNAL OF HIGH ENERGY PHYSICS (2012)

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Review Physics, Multidisciplinary

The muon g-2

Fred Jegerlehner et al.

PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS (2009)

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Article Astronomy & Astrophysics

Lepton flavor violation from supersymmetric grand unified theories: Where do we stand for MEG, PRISM/PRIME, and a super flavor factory

L. Calibbi et al.

PHYSICAL REVIEW D (2006)

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Article Physics, Particles & Fields

Flavour matters in leptogenesis

Asmaa Abada et al.

JOURNAL OF HIGH ENERGY PHYSICS (2006)

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Article Astronomy & Astrophysics

Final report of the E821 muon anomalous magnetic moment measurement at BNL -: art. no. 072003

GW Bennett et al.

PHYSICAL REVIEW D (2006)

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Article Astronomy & Astrophysics

Flavour issues in leptogenesis

A Abada et al.

JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS (2006)

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Review Astronomy & Astrophysics

Electroweak-scale resonant leptogenesis

A Pilaftsis et al.

PHYSICAL REVIEW D (2005)

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Article Physics, Particles & Fields

PRISM/PRIME

Y Kuno

NUCLEAR PHYSICS B-PROCEEDINGS SUPPLEMENTS (2005)

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Article Physics, Multidisciplinary

Resonant τ leptogenesis with observable lepton number violation -: art. no. 081602

A Pilaftsis

PHYSICAL REVIEW LETTERS (2005)

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Article Astronomy & Astrophysics

Spontaneous baryogenesis in flat directions

F Takahashi et al.

PHYSICAL REVIEW D (2004)

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Article Physics, Multidisciplinary

Baryogenesis in a flat direction with neither baryon nor lepton charge

T Chiba et al.

PHYSICAL REVIEW LETTERS (2004)

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Article Astronomy & Astrophysics

Analytical treatment of neutrino asymmetry equilibration from flavor oscillations in the early universe

YYY Wong

PHYSICAL REVIEW D (2002)

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Article Physics, Multidisciplinary

Direct evidence for neutrino flavor transformation from neutral-current interactions in the Sudbury Neutrino Observatory -: art. no. 011301

QR Ahmad et al.

PHYSICAL REVIEW LETTERS (2002)

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Article Physics, Particles & Fields

Cosmological bounds on neutrino degeneracy improved by flavor oscillations

AD Dolgov et al.

NUCLEAR PHYSICS B (2002)

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Article Physics, Particles & Fields

Theoretical expectations for the muon's electric dipole moment

JL Feng et al.

NUCLEAR PHYSICS B (2001)

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Article Physics, Multidisciplinary

Measurement of the rate of νe+d →p+p+e- interactions produced by 8B solar neutrinos at the sudbury neutrino observatory -: art. no. 071301

QR Ahmad et al.

PHYSICAL REVIEW LETTERS (2001)

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Review Physics, Multidisciplinary

Muon decay and physics beyond the standard model

Y Kuno et al.

REVIEWS OF MODERN PHYSICS (2001)

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Article Astronomy & Astrophysics

Remark on sphaleron erasure of baryon asymmetry

M Laine et al.

PHYSICAL REVIEW D (2000)

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Article Physics, Multidisciplinary

Leptogenesis with Dirac neutrinos

K Dick et al.

PHYSICAL REVIEW LETTERS (2000)

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Baryon Asymmetry of the Universe from Lepton Flavor Violation

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