Article
Astronomy & Astrophysics
Amit Dutta Banik, Rishav Roshan, Arunansu Sil
Summary: In this proposed dark matter setup, a two component system consisting of a singlet and a hyperchargeless triplet scalars is introduced, with the ability for interconversion allowing for lower mass dark matter candidates. The model also ensures the absolute stability of the electroweak vacuum up to the Planck scale, thanks to the coupling with the scalar dark matter components.
Article
Physics, Particles & Fields
Cheng-Wei Chiang, Giovanna Cottin, Yong Du, Kaori Fuyuto, Michael J. Ramsey-Musolf
Summary: The study focuses on the discovery prospects of a real triplet extension of the Standard Model scalar sector at the LHC and a potential 100 TeV pp collider, with a specific emphasis on the scenario where the neutral triplet scalar serves as a dark matter candidate. By analyzing current and prospective collider data, the research provides exclusion limits and discovery potential for the triplet scalar, as well as investigates constraints on dark matter direct detection.
JOURNAL OF HIGH ENERGY PHYSICS
(2021)
Article
Physics, Nuclear
He-Yi Li, Ren-You Zhang, Yu Zhang, Wen-Gan Ma, Ming-Ming Long, Shu-Xiang Li
Summary: Thorough investigation of transverse momentum and threshold resummation effects on scalar-pseudoscalar pair production reveals that improved PDFs from threshold resummation can have a comparable impact to the partonic matrix element resummation effect, dominating in high invariant mass regions. Numerical results show that electroweak production via quark-antiquark annihilation dominates over gluon-initiated QCD production by 1 to 2 orders of magnitude.
Article
Physics, Multidisciplinary
Oleg Tretiak, Xue Zhang, Nataniel L. Figueroa, Dionysios Antypas, Andrea Brogna, Abhishek Banerjee, Gilad Perez, Dmitry Budker
Summary: In this study, we conducted a search for fundamental constant oscillations in the range of 20 kHz to 100 MHz, which may arise in models for ultralight dark matter (UDM). By using two independent optical-spectroscopy apparatuses, we achieved significantly higher sensitivity compared to previous work. Our results indicate no observation of UDM and set constraints on the respective couplings to electrons and photons within the investigated UDM particle mass range. These constraints greatly exceed previous bounds from atomic spectroscopy and may even surpass those provided by equivalence-principle (EP) experiments in a specific case.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Particles & Fields
Purusottam Ghosh, Sk Jeesun
Summary: In this work, we investigate a hybrid mechanism for dark matter (DM) production, in which both thermal and non-thermal contributions during different epochs are responsible for the relic abundance of DM. By introducing an additional dark scalar, this hybrid setup alters the parameter space for DM compared to the pure thermal scenario. By considering the non-thermal DM production from the decay of the long-lived dark scalar, we can compensate for the deficit in DM abundance caused by thermal contributions. Furthermore, the direct detection constraints can be evaded by utilizing a specific symmetry, resulting in a suitable candidate for DM.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Celine Boehm, Xiaoyong Chu, Jui-Lin Kuo, Josef Pradler
Summary: The study revisited the possibility of light-scalar dark matter coupled to electrons through fermion or vector mediators, and established new limits and loop-induced processes strengths. Various constraints were considered, largely excluding the explanation of the International Gamma-Ray Astrophysics Laboratory excess of 511 keV photons by galactic annihilation of these particles.
Article
Astronomy & Astrophysics
Brian Batell, Akshay Ghalsasi
Summary: The conventional misalignment mechanism for scalar dark matter is dependent on the initial field value, while the discussed mechanism involves a feeble coupling of dark matter to a fermion in thermal equilibrium to dynamically generate misalignment at large field values before oscillations begin. The dark matter abundance is determined by microphysics rather than initial conditions, unlike conventional misalignment production. As an example, a scenario where dark matter couples to the muon is discussed.
Article
Astronomy & Astrophysics
Shao-Ping Li, Xin Zhang
Summary: This study demonstrates that a naturally occurring MeV-scale dark matter candidate can arise through a warped extra dimension, with weak Higgs portal coupling and self-interaction coupling to address small-scale problems in the universe. The vast parameter space predicted within O(1) fundamental parameters supports this dark matter model.
Article
Astronomy & Astrophysics
Xavier Calmet, Folkert Kuipers
Summary: In this letter, we demonstrate that quantum gravity imposes limitations on the masses of dark matter candidates, determined by their spins and interactions in the dark matter sector. For singlet scalar dark matter, the mass range lies between 10(-3) eV and 10(7) eV, with the lower bound from restrictions on fifth force interactions and the upper bound from the dark matter candidate's lifetime.
Article
Astronomy & Astrophysics
Arghyajit Datta, Rishav Roshan, Arunansu Sil
Summary: We investigate a simple variant of type-II seesaw in which the particle spectrum is extended with one singlet right-handed neutrino and an inert Higgs doublet, both odd under an additional Z(2) symmetry. The correlation between the smallness of the mass splitting and the largeness of the mass of the scalar triplet provides insights into the neutrino mass generation and the correct baryon abundance of the Universe.
Article
Astronomy & Astrophysics
Tomoya Hara, Shinya Kanemura, Taisuke Katayose
Summary: We studied a light thermal scalar dark matter model and found two parameter regions that escaped the traditional observational constraints. In these regions, higher partial waves dominate the annihilation process, leading to weaker constraints from cosmological observations. We quantitatively considered typical cases of mixing angle and new particle mass and discussed the testability of this model in future experiments.
Article
Astronomy & Astrophysics
Ernest Ma
Summary: The paper presents a simple scenario of long-lived dark matter, assuming lepton number conservation with Dirac neutrinos. The neutral component of an SU(2)(L) scalar triplet with L = 2 is suggested as a suitable candidate, which may decay to two neutrinos. Exotic leptons with L = -1 could also play a role, serving as anchors for small seesaw Dirac neutrino masses.
Article
Physics, Multidisciplinary
H. B. Tran Tan, A. Derevianko, V. A. Dzuba, V. V. Flambaum
Summary: This study calculates the cross sections of atomic ionization by absorption of scalar particles in a certain energy range, providing numerical results for relevant atoms and identifying a crucial flaw in previous calculations. It interprets data from the Xenon1T experiment, establishes direct bounds on the coupling of scalars to electrons, and updates axio-ionization cross sections.
PHYSICAL REVIEW LETTERS
(2021)
Article
Astronomy & Astrophysics
Troy Gleason, Ben Brown, Ben Kain
Summary: This study dynamically evolves neutron stars admixed with fermionic dark matter, examining nonlinear stability, oscillation frequencies, and formation process.
Article
Astronomy & Astrophysics
Kento Asai, Coh Miyao, Shohei Okawa, Koji Tsumura
Summary: This study investigates a renormalizable scalar singlet dark matter model based on Z4 lepton flavor symmetry, with the introduction of a mu tau-philic scalar doublet as a mediator connecting dark matter and standard model particles. The flavor off-diagonal interactions of scalar mediators help to easily maintain the observed relic abundance of dark matter and satisfy the current severe constraints from various experiments and observations. The possibility of dark matter direct detection through a one-loop process is also explored, and it is found that the relic abundance of dark matter and the discrepancy of the muon anomalous magnetic moment can be explained simultaneously by the mu tau-philic scalar mediator.
Article
Physics, Particles & Fields
C. Baldenegro, P. Gonzalez Duran, M. Klasen, C. Royon, J. Salomon
Summary: This study presents a phenomenological analysis of jet-gap-jet events, investigating the impact of various factors on the jet-gap-jet signature.
JOURNAL OF HIGH ENERGY 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)
Correction
Multidisciplinary Sciences
J. S. Alcaniz, J. P. Neto, F. S. Queiroz, D. R. da Silva, R. Silva
SCIENTIFIC REPORTS
(2023)
Article
Physics, Multidisciplinary
Mohammad Mahdi Altakach, Jonathan Mark Butterworth, Tomas Jezo, Michael Klasen, Ingo Schienbein
Summary: This study investigates the sensitivity of particle-level fiducial cross section measurements from ATLAS, CMS, and LHCb to a leptophobic top-color model. The model, which has been previously the focus of resonance searches, is directly compared to state-of-the-art predictions for Standard Model top quark production. Next-to-leading order predictions for the new physics signal are also taken into account. Contur framework is used to evaluate the sensitivity of the current measurements, first assuming the measurement and the SM exactly coincide and then using the full SM theory calculation for t t over bar at next-to-leading and next-to-next-to-leading order as the background model. Exclusion limits are derived, the differences between these approaches are discussed, and the limits from resonance searches by ATLAS and CMS are compared.
SCIPOST PHYSICS CORE
(2023)
Article
Astronomy & Astrophysics
Guilherme N. Fortes, Farinaldo S. Queiroz, Clarissa Siqueira, Aion Viana
Summary: By studying the annihilation of secluded dark matter in the Galactic Halo, we find that TeV gamma-ray instruments in the Southern Hemisphere, namely H.E.S.S., CTA, and SWGO, have restrictive bounds on the annihilation cross-section and complement each other in different annihilation channels.
JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
(2023)
Article
Physics, Particles & Fields
Juri Fiaschi, Benjamin Fuks, Michael Klasen, Alexander Neuwirth
Summary: In this study, we update the documentation of the Resummino package and investigate the impact of threshold resummation corrections on precision cross section calculations. We find slightly increased total cross section values and decreased theoretical uncertainties. Additionally, we explore the dependence of the results on the squark masses.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Particles & Fields
L. Duarte, L. Lin, M. Lindner, V. Kozhuharov, S. V. Kuleshov, A. S. de Jesus, F. S. Queiroz, Y. Villamizar, H. Westfahl
Summary: We propose the first Search for Dark Sector using UVX as a detector at the Brazilian Synchrotron Light Laboratory. The experiment can detect dark photons with masses up to 55 MeV and kinetic coupling down to epsilon(2) similar to 10(-12), making it the best probe worldwide in the 10-55 MeV mass range.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Physics, Multidisciplinary
Martin Hentschinski, Christophe Royon, Marco Alcazar Peredo, Cristian Baldenegro, Andrea Bellora, Renaud Boussarie, Francesco Giovanni Celiberto, Salim Cerci, Grigorios Chachamis, J. G. Contreras, Sylvain Fichetl, Michael Fucilla, Gero von Gersdorff, Pablo Gonzalez, Andreas van Hameren, Jamal Jalilian-Marian, Mats Kampshoff, Valery Khoze, Michael Klasen, Spencer Robert Klein, Georgios Krintiras, Piotr Kotko, Krzysztof Kutak, Jean-philippe Lansberg, Emilie Li, Constanin Loizides, Mohammed M. A. Mohammed, Maxim Nefedov, Melih A. Ozcelik, Alessandro Papa, Michael Pitt, Agustin Sabio Vera, Jens Salomon, Sebastian Sapeta, Gustavo Gil D. Silveira, Victor Paulo Goncalves, Mark Strikman, Deniz Sunar Cerci, Lech Szymanowski, Daniel Tapia Takaki, Marek Tasevsky, Samuel Wallon
Summary: The goal of this white paper is to provide a comprehensive overview of forward physics. It discusses the occurrence of BFKL re-summation effects in various final states and TMD factorization at low x. The paper also explores theoretical aspects of low-x physics, probes of the quark-gluon plasma, and the complementarity between LHC and the EIC.
ACTA PHYSICA POLONICA B
(2023)
Article
Astronomy & Astrophysics
Eduardo da Silva Almeida, Alexandre Alves, Oscar J. P. Eboli, F. S. Queiroz
Summary: We investigate the production of color-adjoint leptons (leptogluons) using lepton parton density function of the proton at the LHC. We show that this mechanism can extend the LHC's ability to search for leptogluons with masses up to about 3.5 TeV and compositeness scales of O(1) TeV. Differentiating leptogluons from scalar and vector leptoquarks is also possible in this channel with a data sample of around 100 signal events. The resonant channel can be combined with other leptogluon production processes to enhance exclusion limits and discovery prospects at the LHC.
Article
Physics, Particles & Fields
Alvaro S. de Jesus, Nelson Pinto-Neto, Farinaldo S. Queiroz, Joseph Silk, Deivid R. da Silva
Summary: The Hubble constant derived from the 6-parameter fit to the CMB power spectrum contradicts the value obtained from direct measurements via type Ia supernova and Cepheids observations. We propose a mechanism involving effective operators that produce relativistic dark matter particles at early times, increasing the number of relativistic degrees of freedom. This mechanism can raise the value of the Hubble constant derived from CMB and reconcile discrepancies between local and CMB probes. By itself, it can increase H-0 up to 70 km s(-1) Mpc(-1), and with the addition of a Phantom-like cosmology, reach H-0 ? 71-73 km s(-1)Mpc(-1). We also outline the parameter space that reproduces H-0? 71-73 km s(-1) Mpc(-1) while satisfying all relevant constraints.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Astronomy & Astrophysics
Laura Duarte, Victor P. Goncalves, Daniel E. Martins, Tessio B. de Melo, Farinaldo S. Queiroz
Summary: This paper investigates the possibility of searching for the doubly charged Higgs boson (H +/-+/-) in exclusive processes, characterized by two rapidity gaps and two intact very forward protons in the final state. The associated cross section is estimated using the exclusive nature of the final state and timing information provided by forward proton detectors. Background estimation and pileup effects are also considered. The results suggest that exclusive doubly charged Higgs pair production is a promising way to search for signatures of the type II seesaw mechanism and obtain lower mass bounds on H +/-+/−.
Article
Astronomy & Astrophysics
A. Alves, L. Duarte, S. Kovalenko, Y. M. Oviedo-Torres, F. S. Queiroz, Y. S. Villamizar
Summary: This study derives lower mass bounds on the Z' gauge boson based on dilepton data from the Large Hadron Collider, and predicts the sensitivity of future colliders. The researchers consider the presence of exotic and invisible decays of the Z' gauge boson to find a more conservative and robust limit. They also investigate the impact of these new decay channels on different benchmark models.
Article
Astronomy & Astrophysics
K. F. Muzakka, P. Duwentaester, T. J. Hobbs, T. Jezo, M. Klasen, K. Kovarik, A. Kusina, J. G. Morfin, F. I. Olness, R. Ruiz, I. Schienbein, J. Y. Yu
Summary: In global analyses of nuclear parton distribution functions (nPDFs), tensions between neutrino DIS data and charged-lepton DIS data have been observed. Through investigating different datasets and methods, these tensions can be resolved and a consistent global analysis can be achieved.
Article
Physics, Multidisciplinary
Michael Klasen
Summary: By studying the possible coupling between dark matter and ordinary matter, we have found that current experimental constraints on this "scotogenic scenario" can directly determine the relationship between the lightest neutrino mass and the coupling of the dark matter sector with the Higgs boson.
MOSCOW UNIVERSITY PHYSICS BULLETIN
(2022)
Article
Astronomy & Astrophysics
P. Duwentaester, T. Jezo, M. Klasen, K. Kovarik, A. Kusina, K. F. Muzakka, F. Olness, R. Ruiz, I Schienbein, J. Y. Yu
Summary: A clear understanding of nuclear parton distribution functions (nPDFs) is crucial for interpreting collider data. However, the uncertainty of the gluon PDF remains substantial, limiting the interpretation of heavy ion collision data. To obtain new constraints on the nuclear gluon PDF, researchers used new data and a data-driven approach to make theoretical predictions.