Article
Astronomy & Astrophysics
Giacomo Cacciapagliaa, Francesco Sanninoc
Summary: We discuss the implications of the CDF collaboration's high-precision measurement of the W boson mass on models with a non-standard Higgs, showing that an enhancement of more than 5% in the non-standard Higgs coupling to gauge bosons is required. This can be naturally explained in dynamical models such as the dilaton Higgs, Technicolor, and glueball Higgs. The needed composite scale between 2 and 3 TeV can also account for the muon g-2 anomaly and potential violations of lepton flavour universality.
Article
Astronomy & Astrophysics
Jinheung Kim, Soojin Lee, Jeonghyeon Song, Prasenjit Sanyal
Summary: The null results in the new physics searches at the LHC do not exclude the existence of a light fermiophobic particle, particularly in the case of fermiophobic type-I, where the parameter space satisfies multiple theoretical requirements and maintains the stability of the scalar potential at high energy scales.
Review
Physics, Nuclear
Seong Youl Choi, Jae Sik Lee, Jubin Park
Summary: The study provides an updated review and systematic analysis of the decays of Higgs bosons in the Standard Model and its extensions, focusing on theoretical predictions and constraints obtained from precision analysis of the neutral Higgs boson discovered at 125 GeV.
PROGRESS IN PARTICLE AND NUCLEAR PHYSICS
(2021)
Article
Astronomy & Astrophysics
Sanchari Bhattacharyya, Anindya Datta
Summary: We investigate a variant of the left-right symmetric model based on the SU(3)(C) circle times SU(2)(L) circle times U(1)(L) circle times SU(2)(R) circle times U(1)(R) gauge group (32121). Spontaneous symmetry breaking leads to the existence of neutral and charged massive gauge bosons apart from the standard model bosons. The masses of these bosons and their production cross sections have been studied using the results from the Large Hadron Collider (LHC). Constraints on the masses of certain scalars and fermions have also been derived from the LHC data.
Article
Astronomy & Astrophysics
Kari Rummukainen, Kimmo Tuominen
Summary: Understanding the dynamics of strongly coupled non-Abelian gauge theories is a major challenge in theoretical physics, with applications in understanding long-distance behavior and in areas such as dynamical electroweak symmetry breaking or composite dark sectors. This review outlines the motivations and discusses how lattice methods have been adapted to provide vacuum phase diagrams of strongly coupled gauge theories with different gauge groups and fermion representations.
Article
Astronomy & Astrophysics
J. Mcdonald
Summary: In this paper, we explore the possibility of Higgs inflation in the positive stable region of the potential by introducing a nonminimally coupled induced gravity sector to the Standard Model. We show that under certain conditions, conventional Higgs inflation can be achieved by increasing the effective Planck mass during inflation through a phase transition of another scalar field chi.
Article
Physics, Particles & Fields
Biswaranjan Das, Stefano Moretti, Shoaib Munir, Poulose Poulose
Summary: This study examines the quantum interference effects between neutral Higgs bosons in new physics models, showing significant impact on the pair-production of light Higgs bosons and underscoring the importance of considering these effects in future LHC experiments and exclusion bounds.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Physics, Particles & Fields
John Ellis, Maeve Madigan, Ken Mimasu, Veronica Sanz, Tevong You
Summary: The search for effective field theory deformations of the Standard Model is conducted through a global approach in the framework of the Standard Model Effective Field Theory. The analysis includes constraints on the coefficients of SMEFT operators and explores specific ultra-violet completions of the Standard Model, but does not find significant evidence for physics beyond the Standard Model.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Particles & Fields
Vanamali Shastry, Francesco Giacosa
Summary: We investigated the Higgs-Higgs scattering process and the possibility of a Higgs-Higgs bound state (Higgsonium) in Higgs potentials matching the values from the SM. By constructing the unitarized amplitude using different unitarization schemes, we found no Higgsonium state in the SM and determined the scattering lengths at tree-level and upon unitarization. We then extended the calculation for non-SM potentials and explored conditions for the formation of a bound state close to the Higgs-Higgs threshold.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Multidisciplinary Sciences
Hector de la Torre, Trisha Farooque
Summary: This article reviews recent searches for new physics performed by the ATLAS and CMS experiments at the LHC, in final states containing top and bottom quarks. Searches for vector-like quarks, leptoquarks, and heavy scalar and gauge bosons are discussed.
Article
History & Philosophy Of Science
Cristin Chall, Martin King, Peter Maettig, Michael Stoltzner
Summary: This study examines the discovery of the Higgs boson at the Large Hadron Collider and its impact on the model landscape of particle physics. The research draws two main philosophical lessons: some SM alternatives may be more confirmed by the Higgs discovery than the SM itself, and the persistence of SM alternatives in the face of unfavorable evidence can be understood through the concept of a research programme.
Review
Physics, Multidisciplinary
G. S. Adkins, D. B. Cassidy, J. Perez-Rios
Summary: Positronium, composed of an electron and a positron, offers a powerful tool to test bound-state quantum electrodynamics theory and explore physics beyond the Standard Model.
PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
(2022)
Article
Physics, Particles & Fields
H. Bonet, A. Bonhomme, C. Buck, K. Fuelber, J. Hakenmueller, G. Heusser, T. Hugle, M. Lindner, W. Maneschg, T. Rink, H. Strecker, R. Wink
Summary: The measurements from the coherent elastic neutrino-nucleus scattering (CE nu NS) experiments have opened up possibilities to study neutrino physics beyond the standard model. This paper presents constraints on non-standard interactions (NSIs) and mediators derived from CONUS germanium data. The study found that the CONUS experiment has set the world's best limits on tensor NSIs and has the potential to probe coupling constants for scalar and vector mediators.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Book Review
Multidisciplinary Sciences
Robert P. Crease
Summary: A story about a friend's intimate observation of a reclusive physicist and his community.
Article
Physics, Particles & Fields
Moritz Breitbach, Luca Buonocore, Claudia Frugiuele, Joachim Kopp, Lukas Mittnacht
Summary: Next generation neutrino oscillation experiments like DUNE and T2HK have a rich physics program beyond oscillation measurements. The near detector facilities, especially the DUNE-PRISM design, play a special role in searching for weakly coupled dark sector particles. Moving some near detectors away from the beam axis improves the signal-to-background ratio, leading to a significant boost in sensitivity for dark matter particles interacting mainly with hadrons. Searches for heavy neutral leptons perform equally well in both configurations.
JOURNAL OF HIGH ENERGY PHYSICS
(2022)
Article
Physics, Particles & Fields
Rodrigo Alonso, Alfredo Urbano
JOURNAL OF HIGH ENERGY PHYSICS
(2019)
Article
Astronomy & Astrophysics
Alfredo Urbano, Hardi Veermaee
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2019)
Article
Astronomy & Astrophysics
Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Guillermo Ballesteros, Julian Rey, Marco Taoso, Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Marco Fabbrichesi, Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Astronomy & Astrophysics
Guillermo Ballesteros, Julian Rey, Marco Taoso, Alfredo Urbano
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2020)
Article
Physics, Multidisciplinary
Andrea Caputo, Hongwan Liu, Siddharth Mishra-Sharma, Maxim Pospelov, Joshua T. Ruderman, Alfredo Urbano
Summary: In this study, a new class of signatures called spectral edges and end points are introduced in 21-cm measurements, resulting from interactions between the standard and dark sectors. It demonstrates how resonant dark photon-to-photon conversions can leave distinctive spectral features in the observed 21-cm brightness temperature, with implications for current, upcoming, and proposed experiments targeting the cosmic dawn and the dark ages. These signatures offer a qualitatively new approach to searching for physics beyond the Standard Model using 21-cm observations.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
Xuce Niu, Moinul Hossain Rahat, Karthik Srinivasan, Wei Xue
Summary: The four-point correlation function of primordial scalar perturbations has both even and odd contributions, and the odd signal provides a new way to search for new physics during inflation in cosmological observations. We study the distinctive predictions of even and odd parity from the axion inflation model, where the inflaton is coupled to a vector field via a Chern-Simons interaction. The numerical studies show that the massive and massless vector fields have significant even signals, while the odd contribution is about one to two orders of magnitude smaller.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Physics, Particles & Fields
James Hung-Hsu Chan, Sergey Sibiryakov, Wei Xue
Summary: In this paper, we systematically study the excitations of boson stars, considering the mixing between positive and negative frequencies introduced by gravity. We find that the spectrum contains zero-energy modes in the monopole and dipole sectors due to the spontaneous symmetry breaking by the boson star background. The eigenvalue problem is solved numerically for the first few energy levels in different multipole sectors and the results are compared to the solutions of the Schrodinger equation.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Giacomo Ferrante, Gabriele Franciolini, Antonio Junior Iovino, Alfredo Urbano
Summary: We present a comprehensive formalism for computing the abundance of primordial black holes (PBHs) with local non-Gaussianity (NG) in the curvature perturbation field. We go beyond the traditional quadratic and cubic approximations and consider a generic functional form for NG. Our approach considers both narrow and broad power spectra. We show that the conventional perturbative approach is only reliable for narrow spectra, while for broad spectra, nonperturbative computations are necessary to obtain accurate results.
Article
Astronomy & Astrophysics
Gabriele Franciolini, Ilia Musco, Paolo Pani, Alfredo Urbano
Summary: Recent population studies have used gravitational-wave (GW) events detected by LVK to search for a subpopulation of primordial black holes (PBHs), and have investigated the impact of the power spectrum of cosmological perturbations on the PBH abundance and mass distribution. The results indicate that the majority of dark matter is unlikely to exist in the form of stellar mass PBHs, based on the observations from LVK.
Article
Astronomy & Astrophysics
Gabriele Franciolini, Alfredo Urbano
Summary: Constraining the inflationary epoch is a crucial goal in modern cosmology. This study proposes a new reverse engineering approach to connect late-time observables to consistent inflationary dynamics and the inflaton potential. Through this approach, researchers find that inflation can generate a raised plateau in the power spectrum of curvature perturbations, which connects to fundamental observables such as dark matter, stochastic gravitational waves, and primordial black hole mergers.
Article
Obstetrics & Gynecology
Gisele Vissoci Marquini, Francisco Edes da Silva Pinheiro, Alfredo Urbano da Costa Vieira, Rogerio Melo da Costa Pinto, Maria Gabriela Baumgarten Kuster Uyeda, Manoel Joao Batista Castello Girao, Marair Gracio Ferreira Sartori
REVISTA BRASILEIRA DE GINECOLOGIA E OBSTETRICIA
(2020)
Article
Astronomy & Astrophysics
Rodrigo Alonso, Alfredo Urbano
Article
Astronomy & Astrophysics
Guido D'Amico, Alessandro Strumia, Alfredo Urbano, Wei Xue