Article
Astronomy & Astrophysics
A. Babic, S. Kovalenko, M. Krivoruchenko, F. Simkovic
Summary: This study investigates the impact of the quark condensate seesaw mechanism on the generation of Majorana neutrino mass, suggesting that the smallness of neutrino masses is a result of a large ratio between the lepton-number violating scale and the scale of spontaneous breaking of chiral symmetry.
Review
Physics, Multidisciplinary
Zhi-zhong Xing, Zhen-hua Zhao
Summary: This article provides an up-to-date review of the minimal seesaw mechanism in neutrino physics and cosmology, focusing on the flavor structures of this benchmark scenario and comparing its predictions with current experimental data and observational evidence. Specific attention is paid to topics such as lepton number violation, lepton flavor violation, discrete flavor symmetries, CP violation, and antimatter of the Universe.
REPORTS ON PROGRESS IN PHYSICS
(2021)
Article
Astronomy & Astrophysics
Cheng-Wei Chiang, Kei Yagyu
Summary: The mechanism discussed involves deriving charged lepton masses from one-loop diagrams mediated by particles in a dark sector, with a focus on scenarios where muon and electron masses are generated at one loop with new O(1) Yukawa couplings. An important prediction is that the Yukawa couplings of muon and electron can significantly deviate from their standard model predictions, which can be tested at High-Luminosity LHC and future e(+)e(-) colliders.
Article
Physics, Nuclear
Wojciech Flieger, Janusz Gluza
Summary: This study uses insights from matrix theory to investigate various variants of seesaw mechanisms; By discussing and proving the conditions under which the seesaw framework leads to a mass spectrum with exactly three light neutrinos, an estimate of the mass of heavy neutrinos is obtained; Finally, the research opens new directions for further neutrino physics studies using matrix analysis by providing general observations on neutrino mixing and results on mass spectrum properties.
Article
Astronomy & Astrophysics
Torsten Bringmann, Paul Frederik Depta, Marco Hufnagel, Joern Kersten, Joshua T. Ruderman, Kai Schmidt-Hoberg
Summary: We propose a new mechanism for generating undetectable sterile neutrinos vs in the early Universe, through the conversion of ordinary neutrinos va in scattering processes vsva -> vsvs. This leads to an exponential growth in the abundance of vs after initial production by oscillations. We demonstrate that this production regime occurs naturally for self-interacting vs, offering significant opportunities for vs to account for all observed dark matter. Our findings provide strong motivation to enhance the sensitivity of X-ray line searches and improve constraints from structure formation.
Article
Astronomy & Astrophysics
Chi-Fong Wong, Yang Chen
Summary: We propose a hybrid Seesaw model that combines Type-1 and Type-2 Seesaw mechanisms to generate tree level Majorana neutrino mass and provide a Dark Matter candidate. The model extends the Standard Model by introducing extra gauge symmetry U(1)(D) and a hidden sector consisting of chiral fermions and additional scalar fields. The light neutrino masses are generated through the exchange of new heavy fermions (Type-1 Seesaw) and the coupling to the induced vacuum expectation value of a new heavy scalar (Type-2 Seesaw) after spontaneous symmetry breaking. The unbroken residue of U(1)(D) protects the lightest Dirac fermion in the hidden sector from decaying, thus creating a Dark Matter candidate. Due to strong Seesaw suppression, the new physics scale in this model can be as low as TeV, and the possibility of discovering signals from LHC data in the near future exists.
Article
Astronomy & Astrophysics
Ernesto A. Matute
Summary: The model introduces new neutrino components and symmetry to explain neutrino mass issues, assuming heavy neutrinos do not affect low-energy phenomenology, using both high-scale and low-scale seesaw mechanisms to provide tiny neutrino masses, and ultimately yields a particle behaving like a Dirac sterile neutrino.
MODERN PHYSICS LETTERS A
(2021)
Article
Astronomy & Astrophysics
Zhen-hua Zhao, Xin-Yu Zhao, Hui-Chao Bao
Summary: In this paper, we investigate the simplified textures of M-D that can naturally yield the trimaximal neutrino mixings in the seesaw framework. We analyze the parameters of these textures and examine their consequences for the neutrino parameters and leptogenesis. Additionally, we propose a concrete flavor-symmetry model to realize one representation of these textures.
Article
Astronomy & Astrophysics
Bowen Fu, Stephen F. King
Summary: In this study, we investigate the leptogenesis phenomenon in three different realizations of the type Ib seesaw mechanism. It is found that the minimal type Ib seesaw model cannot produce the correct baryon asymmetry, while the extended type Ib seesaw model can explain the imbalance of matter and antimatter through resonant leptogenesis. Furthermore, the inclusion of dark matter is possible, and the masses of the Dirac right-handed neutrinos can be within the range accessible to future experiments.
Article
Physics, Nuclear
Sudhanwa Patra, Utkarsh Patel, Purushottam Sahu
Summary: This paper proposes a minimally extended Seesaw framework with two right-handed neutrinos, and derives the active neutrino masses in the radiative regime. It is found that, within certain mass limits, the light neutrino mass term can approach a form similar to that under the type-I Seesaw mechanism. Moreover, the decay width of the right-handed neutrinos is calculated to be short enough to cause an observable displacement in the LHC, which can serve as a means to verify their existence in future experiments. The paper also suggests the possibility of studying vertex signatures of particles greater than the mass of the W boson in future work.
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2022)
Article
Astronomy & Astrophysics
Zhi-zhong Xing
Summary: Using a parameterization method, this study derives a general expression for the Jarlskog invariant of CP violation in neutrino oscillations, and compares it with the CP-violating asymmetries of heavy Majorana neutrino decays. Two simplified scenarios are discussed to illustrate the direct or indirect correlation between these two types of CP violation.
Article
Astronomy & Astrophysics
Thede de Boer, Raffaela Busse, Alexander Kappes, Michael Klasen, Sybrand Zeinstra
Summary: Researchers calculated event rates for a radiative seesaw model containing scalar triplet and singlet-doublet fermion dark matter candidates. They found that scalar dark matter has a low capture rate in the Sun, while singlet-doublet fermion dark matter is more competitive in indirect detection due to the presence of spin dependent scattering. Limits set by XENON1T on the spin independent cross section also exclude parts of the parameter space that can be probed at IceCube.
Article
Physics, Particles & Fields
Tomi Kupiainen, Anca Tureanu
Summary: The article presents a prescription for consistently constructing non-Fock coherent flavor neutrino states within the framework of the seesaw mechanism. It establishes that the physical vacuum of massive neutrinos is a condensate of Standard Model massless neutrino states. The coherent states involving a finite number of massive states are derived by constructing their creation operator, fulfilling the key requirement of coherence for particle oscillations. The article also comments on the inherent non-unitarity of the oscillation probability induced by the requirement of coherence.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
A. E. Carcamo Hernandez, Sergey Kovalenko, Farinaldo S. Queiroz, Yoxara S. Villamizar
Summary: In this paper, a model based on the SU (3)(C) x SU (3)(L) x U(1)(X) (3-3-1) gauge symmetry is proposed to explain the recent measurements of the muon anomalous magnetic moment (g-2) and nonzero neutrino masses. By introducing right-handed neutrinos and vector-like fermions, the model successfully explains the active neutrino masses and reproduces the recent Muon g(-2) results within the existing bounds.
Article
Physics, Particles & Fields
E. Fernandez-Martinez, M. Pierre, E. Pinsard, S. Rosauro-Alcaraz
Summary: This study analyzes the inverse Seesaw scenario for neutrino masses, where the Lepton number symmetry is broken dynamically by a scalar with Lepton number two, and shows how the associated Majoron can alleviate the Hubble tension. Additionally, it suggests that sterile neutrinos at the keV-MeV scale can explain all the dark matter component of the Universe if produced via freeze-in from the decays of heavier degrees of freedom.
EUROPEAN PHYSICAL JOURNAL C
(2021)
Article
Astronomy & Astrophysics
P. S. Bhupal Dev, Jean-Francois Fortin, Steven P. Harris, Kuver Sinha, Yongchao Zhang
Summary: Neutron star mergers provide a novel environment for studying new physics beyond the Standard Model. In this study, we considered a simple extension of the scalar sector involving a light CP-even scalar singlet S that mixes with the SM Higgs boson. We found that S particles can be produced abundantly in neutron star mergers and may either be trapped or stream freely out of the merger remnant. Our results show that the S particles can act as an extra cooling channel in the free-streaming region and contribute to faster thermal equilibration in the trapped region. Therefore, future observations of neutron star mergers could effectively probe a unique range of the S parameter space.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2022)
Article
Physics, Nuclear
Jonathan L. Feng, Felix Kling, Mary Hall Reno, Juan Rojo, Dennis Soldin, Luis A. Anchordoqui, Jamie Boyd, Ahmed Ismail, Lucian Harland-Lang, Kevin J. Kelly, Vishvas Pandey, Sebastian Trojanowski, Yu-Dai Tsai, Jean-Marco Alameddine, Takeshi Araki, Akitaka Ariga, Tomoko Ariga, Kento Asai, Alessandro Bacchetta, Kincso Balazs, Alan J. Barr, Michele Battistin, Jianming Bian, Caterina Bertone, Weidong Bai, Pouya Bakhti, A. Baha Balantekin, Basabendu Barman, Brian Batell, Martin Bauer, Brian Bauer, Mathias Becker, Asher Berlin, Enrico Bertuzzo, Atri Bhattacharya, Marco Bonvini, Stewart T. Boogert, Alexey Boyarsky, Joseph Bramante, Vedran Brdar, Adrian Carmona, David W. Casper, Francesco Giovanni Celiberto, Francesco Cerutti, Grigorios Chachamis, Garv Chauhan, Matthew Citron, Emanuele Copello, Jean-Pierre Corso, Luc Darme, Raffaele Tito D'Agnolo, Neda Darvishi, Arindam Das, Giovanni De Lellis, Albert De Roeck, Jordy de Vries, Hans P. Dembinski, Sergey Demidov, Patrick DeNiverville, Peter B. Denton, Frank F. Deppisch, P. S. Bhupal Dev, Antonia Di Crescenzo, Keith R. Dienes, Milind Diwan, Herbi K. Dreiner, Yong Du, Bhaskar Dutta, Pit Duwentaester, Lucie Elie, Sebastian A. R. Ellis, Rikard Enberg, Yasaman Farzan, Max Fieg, Ana Luisa Foguel, Patrick Foldenauer, Saeid Foroughi-Abari, Jean-Francois Fortin, Alexander Friedland, Elina Fuchs, Michael Fucilla, Kai Gallmeister, Alfonso Garcia, Carlos A. Garcia Canal, Maria Vittoria Garzelli, Rhorry Gauld, Sumit Ghosh, Anish Ghoshal, Stephen Gibson, Francesco Giuli, Victor P. Goncalves, Dmitry Gorbunov, Srubabati Goswami, Silvia Grau, Julian Y. Guenther, Marco Guzzi, Andrew Haas, Timo Hakulinen, Steven P. Harris, Julia Harz, Juan Carlos Helo Herrera, Christopher S. Hill, Martin Hirsch, Timothy J. Hobbs, Stefan Hoche, Andrzej Hryczuk, Fei Huang, Tomohiro Inada, Angelo Infantino, Ameen Ismail, Richard Jacobsson, Sudip Jana, Yu Seon Jeong, Yongsoo Jho, Dmitry Kalashnikov, Timo J. Karkkainen, Cynthia Keppel, Jongkuk Kim, Michael Klasen, Spencer R. Klein, Pyungwon Ko, Dominik Koehler, Masahiro Komatsu, Karol Kovarik, Suchita Kulkarni, Jason Kumar, Karan Kumar, Jui-Lin Kuo, Frank Krauss, Aleksander Kusina, Maxim Laletin, Chiara Le Roux, Seung J. Lee, Hye-Sung Lee, Helena Lefebvre, Jinmian Li, Shuailong Li, Yichen Li, Wei Liu, Zhen Liu, Mickael Lonjon, Kun-Feng Lyu, Rafal Maciula, Roshan Mammen Abraham, Mohammad R. Masouminia, Josh McFayden, Oleksii Mikulenko, Mohammed M. A. Mohammed, Kirtimaan A. Mohan, Jorge G. Morfin, Ulrich Mosel, Martin Mosny, Khoirul F. Muzakka, Pavel Nadolsky, Toshiyuki Nakano, Saurabh Nangia, Angel Navascues Cornago, Laurence J. Nevay, Pierre Ninin, Emanuele R. Nocera, Takaaki Nomura, Rui Nunes, Nobuchika Okada, Fred Olness, John Osborne, Hidetoshi Otono, Maksym Ovchynnikov, Alessandro Papa, Junle Pei, Guillermo Peon, Gilad Perez, Luke Pickering, Simon Plaetzer, Ryan Plestid, Tanmay Kumar Poddar, Pablo Quilez, Mudit Rai, Meshkat Rajaee, Digesh Raut, Peter Reimitz, Filippo Resnati, Wolfgang Rhode, Peter Richardson, Adam Ritz, Hiroki Rokujo, Leszek Roszkowski, Tim Ruhe, Richard Ruiz, Marta Sabate-Gilarte, Alexander Sandrock, Ina Sarcevic, Subir Sarkar, Osamu Sato, Christiane Scherb, Ingo Schienbein, Holger Schulz, Pedro Schwaller, Sergio J. Sciutto, Dipan Sengupta, Lesya Shchutska, Takashi Shimomura, Federico Silvetti, Kuver Sinha, Torbjorn Sjostrand, Jan T. Sobczyk, Huayang Song, Jorge F. Soriano, Yotam Soreq, Anna Stasto, David Stuart, Shufang Su, Wei Su, Antoni Szczurek, Zahra Tabrizi, Yosuke Takubo, Marco Taoso, Brooks Thomas, Pierre Thonet, Douglas Tuckler, Agustin Sabio Vera, Heinz Vincke, K. N. Vishnudath, Zeren Simon Wang, Martin W. Winkler, Wenjie Wu, Keping Xie, Xun-Jie Xu, Tevong You, Ji-Young Yu, Jiang-Hao Yu, Korinna Zapp, Yongchao Zhang, Yue Zhang, Guanghui Zhou, Renata Zukanovich Funchal
Summary: High energy collisions at the High-Luminosity Large Hadron Collider (LHC) produce a large number of particles beyond the acceptance of existing experiments. The proposed Forward Physics Facility (FPF) will host experiments to probe standard model processes and search for physics beyond the standard model (BSM). FPF experiments will explore BSM physics through searches for new particle scattering or decay signatures and deviations from SM expectations in a low-background environment.
JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS
(2023)
Article
Physics, Particles & Fields
Garv Chauhan, P. S. Bhupal Dev
Summary: We propose a low-scale type-I seesaw scenario with discrete flavor and CP symmetries that not only explains the measured values of lepton mixing angles but also predicts leptonic CP violation and connects low-energy CP phases with high-energy CP phases. The scenario involves three quasi-degenerate right-handed Majorana neutrinos whose decays can explain the observed baryon asymmetry through resonant leptogenesis. The study explores the correlation between the predicted baryon asymmetry and lepton-number-violating signals at high-energy colliders and low-energy neutrinoless double beta decay experiments.
Article
Astronomy & Astrophysics
Garv Chauhan, P. S. Bhupal Dev, Xun-Jie Xu
Summary: The article discusses a hidden U(1) gauge symmetry where only the right-handed neutrinos (vR) are charged. The corresponding gauge boson, called the vR-philic Z', can be experimentally accessible through loop-induced couplings via left-right neutrino mixing. The vR-philic Z' has stronger couplings to neutrinos than to charged leptons and quarks, making it an interesting scenario for future neutrino experiments.
Article
Engineering, Aerospace
Farzane Shirazi, Ephraim Gau, Md. Arman Hossen, Daniel Becker, Daniel Schmidt, Daniel Swetz, Douglas Bennett, Dana Braun, Fabian Kislat, Johnathon Gard, John Mates, Joel Weber, Nicole Rodriguez Cavero, Sohee Chun, Lindsey Lisalda, Andrew West, Bhupal Dev, Francesc Ferrer, Richard Bose, Joel Ullom, Henric Krawczynski
Summary: This paper introduces a new concept called 511-CAM, which combines focusing-ray optics with a stack of transition edge sensor microcalorimeter arrays in the focal plane for 511 keV gamma-ray imaging. This technology has unprecedented energy resolution and angular resolution, which is of great importance for identifying the origin of the 511 keV emission.
JOURNAL OF ASTRONOMICAL TELESCOPES INSTRUMENTS AND SYSTEMS
(2023)
Article
Astronomy & Astrophysics
Yoav Afik, P. S. Bhupal Dev, Amarjit Soni, Fang Xu
Summary: The longstanding muon (g - 2) anomaly and hints of lepton flavor universality violation in B-meson decays may indicate new physics beyond the Standard Model (SM). The RPV3 framework, which involves light third-generation sfermions, presents a compelling solution to these flavor anomalies and other issues in the SM. We propose a new RPV3 scenario to explain the muon (g - 2) anomaly and suggest strategies to improve the current constraints using LHC data.
Article
Astronomy & Astrophysics
Rahool Kumar Barman, P. S. Bhupal Dev, Anil Thapa
Summary: We explore the parameter space of lepton flavor violating neutral Higgs Yukawa couplings and study the LFV prospects of a generic beyond the Standard Model neutral Higgs boson with a mass range of [20; 800] GeV at the high-luminosity Large Hadron Collider (HL-LHC) using the vector boson fusion (VBF) Higgs production process. We compare our projected sensitivities for the Standard Model Higgs LFV branching ratio with current and future low-energy constraints, and also provide model-independent upper limits on the VBF production cross section of the neutral Higgs boson times its branching ratio in the H-mu tau channel at the HL-LHC.
Article
Astronomy & Astrophysics
Saumyen Kundu, Atanu Guha, Prasanta Kumar Das, P. S. Bhupal Dev
Summary: In this study, we consider the interaction between dark matter and Standard Model leptons. We analyze the potential of future lepton colliders to detect such leptophilic dark matter in the mono-photon and mono-Z channels. Using an effective field theory framework, we consider all possible dimension-six operators and determine the collider sensitivities as a function of dark matter mass. Our results show that the International Linear Collider can probe leptophilic dark matter at a high sensitivity level in the low-mass regime.
Article
Physics, Particles & Fields
Arnab Dasgupta, P. S. Bhupal Dev, Tao Han, Rojalin Padhan, Si Wang, Keping Xie
Summary: We study the phenomenology of leptophilic Z ' gauge bosons at future high-energy e(+)e(-) and mu(+)mu(-) colliders, as well as at gravitational wave observatories. We find that future e(+)e(-) and mu(+)mu(-) colliders with multi-TeV center-of-mass energies provide unprecedented sensitivity to heavy leptophilic Z ' bosons. Moreover, if these U(1) models are classically scale-invariant, the phase transition at the U(1) symmetry-breaking scale tends to be strongly first-order with ultra-supercooling, and leads to observable stochastic gravitational wave signatures. We also find that the future sensitivity of gravitational wave observatories can probe higher Z ' masses, complementing the collider experiments.
JOURNAL OF HIGH ENERGY PHYSICS
(2023)
Article
Astronomy & Astrophysics
Dimitrios Karamitros, Thomas Mckelvey, Apostolos Pilaftsis
Summary: In this study, we investigated the dynamics of unstable two-level quantum systems using the Bloch-sphere formalism. We found a novel class of critical scenarios in which the energy-level and decay-width vectors are orthogonal and the parameter r is less than 1. Interestingly, in an appropriately defined codecaying frame, critical unstable qubit systems exhibit coherence-decoherence oscillations. These findings have important implications for understanding the behavior of two-level quantum systems and their applications in quantum information and unstable systems.
Article
Astronomy & Astrophysics
P. S. Bhupal Dev, Amarjit Soni, Fang Xu
Summary: The recent results from the Fermilab muon g-2 experiment and the hints of lepton flavor universality violation in B-meson decays provide strong evidence for new physics beyond the Standard Model. We propose a minimal R-parity violating supersymmetric scenario with light third-generation sfermions (RPV3) as a natural and well-motivated framework to explain all flavor anomalies. This scenario is consistent with both low-energy flavor constraints and high-energy collider searches. We also suggest specific collider signatures for the sbottom and sneutrino particles in this scenario.
Review
Physics, Particles & Fields
Oliver Fischer, Bruce Mellado, Stefan Antusch, Emanuele Bagnaschi, Shankha Banerjee, Geoff Beck, Benedetta Belfatto, Matthew Bellis, Zurab Berezhiani, Monika Blanke, Bernat Capdevila, Kingman Cheung, Andreas Crivellin, Nishita Desai, Bhupal Dev, Rohini Godbole, Tao Han, Philip Harris, Martin Hoferichter, Matthew Kirk, Suchita Kulkarni, Clemens Lange, Kati Lassila-Perini, Zhen Liu, Farvah Mahmoudi, Claudio Andrea Manzari, David Marzocca, Biswarup Mukhopadhyaya, Antonio Pich, Xifeng Ruan, Luc Schnell, Jesse Thaler, Susanne Westhoff
Summary: Particle physics is at a crossroads, as the completion of the Standard Model and the observation of anomalies beyond the model offer both opportunities and challenges for future research. Systemic deficiencies in experiments and search strategies may hinder the discovery of beyond the Standard Model physics, but new search strategies utilizing CERN open data can help uncover hidden signatures. Access to open data is crucial for fully exploiting the potential of the Large Hadron Collider (LHC).
EUROPEAN PHYSICAL JOURNAL C
(2022)
Article
Astronomy & Astrophysics
Arindam Das, P. S. Bhupal Dev, Yutaka Hosotani, Sanjoy Mandal
Summary: This article discusses the minimal U(1)(X) extension of the Standard Model, where the coupling of the new neutral gauge boson (Z') with the SM fermions is determined by the U(1)(X) charges of the new scalar fields. The study finds that future e(-)e(+) colliders can be used to probe multi-TeV Z' bosons through observables such as angular distributions, forward-backward (AFB), left-right (ALB), and left-right forward-backward (ALR-FB) asymmetries.
Article
Astronomy & Astrophysics
Ingolf Bischer, Werner Rodejohann, P. S. Bhupal Dev, Xun-Jie Xu, Yongchao Zhang
Summary: The P2 experiment aims to study leptoquarks through high-precision measurements of the parity-violating asymmetry in electron-proton and electron-C-12 scatterings. The experiment is sensitive to operators in the Standard Model effective field theory and leptoquark parameters, and can test energy scales up to 15 TeV. Additionally, the experiment can resolve degeneracies of different operators and address potential tensions between theoretical and experimental determinations of the weak charge of Cs-133.
Review
Physics, Nuclear
K. S. Babu, P. S. Bhupal Dev, Sudip Jana
Summary: This study explores the detection prospects of relatively light charged scalars in neutrino observatories, finding that these scalar mediators can produce resonance features in the ultrahigh energy neutrino event spectrum and contribute to observable nonstandard neutrino interactions.
INTERNATIONAL JOURNAL OF MODERN PHYSICS A
(2022)