Article
Physics, Particles & Fields
Chia-Feng Chang, Yanou Cui
Summary: This study provides an extensive analysis of gravitational waves (GWs) generated by global cosmic strings, taking into account recent developments and uncertainties in the models. The results suggest that the frequency spectrum of GW background from global cosmic strings can be used to probe the cosmic history prior to the Big Bang nucleosynthesis.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Thomas G. Rizzo
Summary: In this paper, the interaction between dark matter and the Standard Model is studied, leading to a possible phenomenon of dark magnetic dipole moments. Through the investigation of a simple toy model, it is found that the existence of dark matter can result in outcomes that are compatible with existing experimental constraints and exhibit different characteristics once the DP is discovered. In specific parameter space regions, the invisible decay of DP may be more preferred.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Peter Athron, Csaba Balazs, Ankit Beniwal, J. Eliel Camargo-Molina, Andrew Fowlie, Tomas E. Gonzalo, Sebastian Hoof, Felix Kahlhoefer, David J. E. Marsh, Markus Tobias Prim, Andre Scaffidi, Pat Scott, Wei Su, Martin White, Lei Wu, Yang Zhang
Summary: The excess of electron recoil events observed in the XENON1T experiment has been proposed to potentially indicate axion-like particles (ALPs) originated from the Sun or dark matter halo, or due to trace amounts of tritium in the experiment. Combining XENON1T data with astrophysical probes supports the dark matter ALP hypothesis, despite the need for tuning unknown parameters. Bayesian analysis does not show strong preference for the ALP interpretation of the XENON1T excess over the background hypothesis, despite the tensions in the case of solar ALPs.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Avik Paul, Upala Mukhopadhyay, Debasish Majumdar
Summary: The study explores a simple extension of the Standard Model by adding two complex singlet scalars with U(1) symmetry. A discrete Z2xZ2' symmetry is imposed in the model, and the generation of gravitational waves from unstable annihilating domain walls and strong first-order phase transition is investigated. Observational signatures from these gravitational waves at future detectors are also discussed.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Raffaele Tito D'Agnolo, Di Liu, Joshua T. Ruderman, Po-Jen Wang
Summary: The authors present a mechanism of kinematically forbidden dark matter annihilations into Standard Model leptons, which precisely selects the dark matter mass that gives the observed relic abundance. This mechanism differs qualitatively from existing models of thermal dark matter, where fixing the relic density typically leaves open orders of magnitude of viable dark matter masses.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Jose Eliel Camargo-Molina, Rikard Enberg, Johan Lofgren
Summary: Research shows that a first-order Electroweak Phase Transition is possible in the Standard Model Effective Field Theory when the barrier between minima is generated radiatively. Experimental data reveals key points that agree with a first-order transition.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Carlos E. Yaguna, Oscar Zapata
Summary: In multi-component scalar dark matter scenarios, a single Z(N) symmetry is studied for the stability of different dark matter particles, with two species contributing to the observed dark matter density. The analysis of three scenarios shows that new interactions allowed by the Z(2n) symmetry can satisfy current experimental constraints over a wider range of dark matter masses and may lead to observable signals in direct detection experiments. These scenarios can serve as prototypes for other two-component Z(2n) models with one complex and one real dark matter particle.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Adam Falkowski, Martin Gonzalez-Alonso, Oscar Naviliat-Cuncic
Summary: This paper reviews and analyzes precision measurements in allowed nuclear beta decays and neutron decay, confirming the V-A character of the interaction and updating the values for V-ud and g(A) at the 10^(-4) level. By incorporating data from mirror beta transitions in new global fits, the study also places new stringent limits on exotic couplings involving left-handed and right-handed neutrinos.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Fabiola Fortuna, Pablo Roig, Jose Wudka
Summary: In this study, interactions between dark matter and standard model particles with spin one mediators are analyzed within an effective field theory framework. Solutions corresponding to operators with antisymmetric tensor mediators that meet various experimental constraints are obtained.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Soo-Min Choi, Hyun Min Lee, Bin Zhu
Summary: A novel mechanism for achieving exothermic dark matter through dark mesons in the approximate flavor symmetry has been proposed. By introducing a local dark U(1)' symmetry and breaking it spontaneously through the VEV of a dark Higgs, small mass splittings between dark quarks have been achieved, leading to small split masses for dark mesons and explaining the electron recoil excess observed in XENON1T.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Kaustubh Deshpande, Soubhik Kumar, Raman Sundrum
Summary: Hybrid Inflation is a well-motivated mechanism for cosmic inflation, but faces hierarchy problems; by introducing a discrete twin symmetry, these issues can be addressed, leading to a natural model of non-supersymmetric low-scale inflation.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Yong Du, Jiang-Hao Yu
Summary: The study precisely calculates the number of relativistic species, N-eff, in the standard model and predicts it will be measured to the percent level by CMB-S4 in the future. Neutral-current non-standard interactions are found to impact neutrino decoupling in the early Universe, subsequently modifying N-eff. The results provide a comprehensive analysis of the dimension-7 parameterized operators in effective field theory framework and offer a stringent constraint on the dimension-6 vector-type neutrino-electron operator's scale.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Astronomy & Astrophysics
Huai-Ke Guo, Kuver Sinha, Daniel Vagie, Graham White
Summary: This study carefully analyzes the stochastic gravitational wave production from cosmological phase transitions in an expanding universe, considering both radiation and matter dominated histories. The dynamics of the phase transition, including various factors like bubble lifetime distribution and mean bubble separation, are studied in detail. The study also provides insights into the gravitational wave spectrum and highlights the potential of distinguishing between different expansion histories based on features of the gravitational wave spectral form.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2021)
Article
Astronomy & Astrophysics
Juven Wang, Yi-Zhuang You
Summary: In this paper, the author proposes an alternative view of the Standard Model, suggesting that it arises from various neighboring vacuum competition in a vast quantum phase diagram. By introducing two toy models, the author demonstrates the specific details and discusses the possible beyond the Standard Model excitations. The paper also discusses two cases regarding internal symmetries and explores the kinematic and global anomaly matching constraints between the UV parent theory and various candidate IR field theories. Further verification of the IR dynamics is desirable.
Article
Physics, Particles & Fields
Miguel Levy, Joao G. Rosa, Luis B. Ventura
Summary: The study demonstrates the potential of realizing warm inflation in a minimal extension of the Standard Model, which can address various shortcomings of the Standard Model. The use of symmetries within the model not only helps to protect the scalar potential against thermal corrections, but also provides a possible explanation for the existence of dark matter.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Review
Physics, Particles & Fields
P. Agrawal, M. Bauer, J. Beacham, A. Berlin, A. Boyarsky, S. Cebrian, X. Cid-Vidal, D. D'Enterria, A. De Roeck, M. Drewes, B. Echenard, M. Giannotti, G. F. Giudice, S. Gninenko, S. Gori, E. Goudzovski, J. Heeck, P. Hernandez, M. Hostert, I. G. Irastorza, A. Izmaylov, J. Jaeckel, F. Kahlhoefer, S. Knapen, G. Krnjaic, G. Lanfranchi, J. Monroe, V. I. Martinez Outschoorn, J. Lopez-Pavon, S. Pascoli, M. Pospelov, D. Redigolo, A. Ringwald, O. Ruchayskiy, J. Ruderman, H. Russell, J. Salfeld-Nebgen, P. Schuster, M. Shaposhnikov, L. Shchutska, J. Shelton, Y. Soreq, Y. Stadnik, J. Swallow, K. Tobioka, Y-D Tsai
Summary: With the establishment and maturation of experimental programs focusing on new physics at the LHC, there is a growing interest in exploring the physics of light and feebly-interacting particles as complementary to New Physics at the TeV scale and beyond. FIPs 2020, the first workshop dedicated to this field, brought together experts from various experiments and astrophysics communities to discuss experimental progress and theory models, aiming to enhance collaboration across different fields.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
Prateek Agrawal, Michael Nee
Summary: The study focuses on first order phase transitions in Randall-Sundrum models in the early universe related to confinement in large-N gauge theories. The proposed mechanism of avoided deconfinement aims to stabilize the theory and allows for a viable cosmology for theories with parametrically large N.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Prateek Agrawal, Anson Hook, Junwu Huang, Gustavo Marques-Tavares
Summary: We study the early and late time signatures of QCD axion strings and hyperlight axion strings, focusing on charge deposition and neutralizing mechanisms. While early universe signatures appear unlikely, there are numerous late time signatures. Axion strings passing through galaxies obtain a large charge density, which is neutralized by bound state Standard Model particles. The charged wave packets on the string and the dense plasma outside travel at nearly the speed of light and can have collisions with high energies, making them visible at radio telescopes even when occurring cosmologically far away. These new observables are complementary to the recently proposed CMB observables for hyperlight axion strings and are sensitive to a similar parameter range.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Prateek Agrawal, Michael Nee, Mario Reig
Summary: In this study, we demonstrate that the couplings between axions and gauge bosons are greatly restricted in Grand Unified Theories with a simple 4D gauge group incorporating the standard model. The topological nature of these couplings enables them to be matched from the ultraviolet (UV) to the infrared (IR), and the ratio of the anomaly with photons and gluons for any axion is determined by unification. Consequently, the discovery of axions becomes a significant tool for investigating Grand Unification.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Multidisciplinary
C. B. Verhaaren, J. Alimena, M. Bauer, P. Azzi, R. Ruiz, M. Neubert, O. Mikulenko, M. Ovchynnikov, M. Drewes, J. Klaric, A. Blondel, C. Rizzi, A. Sfyrla, T. Sharma, S. Kulkarni, A. Thamm, R. Gonzalez Suarez, L. Rygaard
Summary: FCC-ee is a frontier factory for Higgs, top, electroweak, and flavour physics, operating in a 100 km circular tunnel built at CERN. It offers opportunities to discover evidence of physics beyond the Standard Model, particularly in the search for long-lived particles.
FRONTIERS IN PHYSICS
(2022)
Article
Physics, Particles & Fields
Harun Acaroglu, Prateek Agrawal, Monika Blanke
Summary: We study a simplified model of lepton-flavoured complex scalar dark matter in the Dark Minimal Flavour Violation framework. This model extends the Standard Model by introducing a scalar dark matter flavour triplet and a charged fermionic mediator to couple dark matter to the right-handed charged leptons. The parameterized interaction is represented by a new 3 x 3 coupling matrix lambda. Our analysis focuses on constraints from collider searches, lepton flavour violating decays, dark matter relic density, and direct and indirect dark matter detection experiments. The combined analysis shows that restrictions from lepton flavour violating decays, observed relic density, and dark matter nucleon scattering are the most influential.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Prateek Agrawal, Francis-Yan Cyr-Racine, David Pinner, Lisa Randall
Summary: This paper investigates a scenario where the tension between local measurements of the Hubble parameter and the value inferred from cosmic microwave background (CMB) data is eased by adding energy to the universe. By identifying solutions with scalar field potential proportional to , with simple asymptotic behavior, the authors accurately describe both the evolution and fluctuations of the field.
PHYSICS OF THE DARK UNIVERSE
(2023)
Review
Physics, Particles & Fields
Guillaume Albouy, Jared Barron, Hugues Beauchesne, Elias Bernreuther, Marcella Bona, Cesare Cazzaniga, Cari Cesarotti, Timothy Cohen, Annapaola de Cosa, David Curtin, Zeynep Demiragli, Caterina Doglioni, Alison Elliot, Karri Folan DiPetrillo, Florian Eble, Carlos Erice, Chad Freer, Aran Garcia-Bellido, Caleb Gemmell, Marie-Helene Genest, Giovanni Grilli di Cortona, Giuliano Gustavino, Nicoline Hemme, Tova Holmes, Deepak Kar, Simon Knapen, Suchita Kulkarni, Luca Lavezzo, Steven Lowette, Benedikt Maier, Sean Mee, Stephen Mrenna, Harikrishnan Nair, Jeremi Niedziela, Christos Papageorgakis, Nukulsinh Parmar, Christoph Paus, Kevin Pedro, Ana Peixoto, Alexx Perloff, Tilman Plehn, Christiane Scherb, Pedro Schwaller, Jessie Shelton, Akanksha Singh, Sukanya Sinha, Torbjorn Sjostrand, Aris G. B. Spourdalakis, Daniel Stolarski, Matthew J. Strassler, Andrii Usachov, Carlos Vazquez Sierra, Christopher B. Verhaaren, Long Wang
Summary: This work explores a strongly coupled dark/hidden sector where dark particles are produced at the LHC and undergo rapid hadronization before decaying back. It discusses a range of possible signatures and presents new developments and improved search strategies.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
David Curtin, Caleb Gemmell, Christopher B. Verhaaren
Summary: This article highlights the importance of glueballs formed in an SU(Nc) gauge theory with zero light quark flavors and discusses the significance of related research for hidden valley theories and dark matter, among other fields.
Article
Physics, Particles & Fields
Yahya Almumin, Julian Heeck, Arvind Rajaraman, Christopher B. Verhaaren
Summary: This study characterizes the radial excitations of solitons with fixed charge, providing their physical spectrum and approximately describing the global properties of excited states, as well as discussing their decay channels.
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Can Kilic, Christopher B. Verhaaren, Taewook Youn
Summary: The fraternal twin Higgs scenario has been expanded to include a novel dark matter candidate and a mechanism for generating matter/antimatter asymmetry in both sectors. The model discusses the origin of the asymmetry and highlights promising discovery channels in future experiments.
Article
Astronomy & Astrophysics
Julian Heeck, Arvind Rajaraman, Christopher B. Verhaaren
Summary: Researchers investigate the possibility of the coexistence of Q-balls and Q-shells in a generic sixth-order polynomial potential, suggesting that both solutions are generally allowed in this potential. They argue that Q-shell solutions may occur in potentials that were previously thought to only contain Q-balls, and provide simple analytic characterizations of these solutions for predicting their physical properties accurately.
Article
Astronomy & Astrophysics
Julian Heeck, Arvind Rajaraman, Rebecca Riley, Christopher B. Verhaaren
Summary: A relation is discovered that allows one to extract the properties of gauged Q-balls from the more easily obtained properties of global Q-balls, including radius, charge, and energy. Despite the marked differences in properties between gauged Q-balls and global Q-balls, this study provides a new guide to understanding gauged Q-balls.
Article
Astronomy & Astrophysics
Prateek Agrawal, Georges Obied, Cumrun Vafa
Summary: This article introduces a string-inspired model that incorporates a rolling scalar field as the source of dark energy, connecting it to the swampland de Sitter conjecture and distance conjecture. By modifying the recent evolution of the Universe in this way, the model effectively reduces cosmological tensions in measurements such as H-0 and sigma(8).
Article
Astronomy & Astrophysics
Julian Heeck, Arvind Rajaraman, Rebecca Riley, Christopher B. Verhaaren
Summary: Nontopological soliton configurations called Q-balls, which are stable against decay, are studied under global U(1) symmetry. Analytical approximations for the Q-ball profiles in a polynomial potential are derived, allowing for precise description without solving the underlying differential equation. Results significantly improve on thin-wall approximation and provide simple expressions for important Q-ball properties like charge, energy, and radius.