Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session SS03: V: Higgs, Electroweak, Hadrons and BSM |
Hide Abstracts |
Sponsoring Units: DPF Chair: Xiaofeng Dong, University of Chicago Room: Virtual Room 3 |
Tuesday, April 25, 2023 2:30PM - 2:42PM |
SS03.00001: Higgs Balls: Building Thermal Non-Topological Solitons with the Higgs Field Lauren M Pearce Scalar fields that carry either a global or gauged conserved charge may form non-topological solitons if the energy of an extended field configuration is less than the energy of an equivalent number of free quanta. We argue that thermal corrections can allow for such non-topological solitons in many models, including in some which lack the necessary attractive interactions at zero temperature. As an illustration, we consider the HIggs field, demonstrating that although such solitons do not exist in the Standard Model, they can exist in BSM extensions. |
Tuesday, April 25, 2023 2:42PM - 2:54PM |
SS03.00002: Search for tri-Higgs Boson production in pp collisions at √s= 13 TeV with the ATLAS detector Nicholas G Kyriacou After the Higgs Boson, with a mass of 125 GeV, was discovered in 2012, studies of single Higgs boson production have largely confirmed that this particle has similar properties to the Higgs boson predicted by the Standard Model (SM). Further studies on Higgs boson production rates represent the next crucial step to constraining the Higgs sector and allow the chance to refine measurements of the Higgs boson self-coupling. While previous searches have focused on di-Higgs, this analysis documents a new search, with 139 fb-1 of pp collisions at √s =13TeV collected by the ATLAS detector in LHC Run 2, for tri-Higgs (hhh) production in the bbbbbb final-state. This analysis focuses on a search for resonant hhh production model featured by a SM-extension to include two additional real-singlet scalars (TRSM), but will also set limits on non-resonant production. Small background rates benefit analysis sensitivity, however they also represent a major challenge and require precise background modelling. To estimate the 6b background, this analysis uses a reweighting of lower b-jet multiplicities. This analysis attempts to set limits for the first time on hhh production cross-sections. Analysis is currently blinded for both resonant and non-resonant searches and analysis techniques and expected significances will be presented.<br /> |
Tuesday, April 25, 2023 2:54PM - 3:06PM |
SS03.00003: A new look at the Dirac quantization condition Douglas A Singleton, P. Q. Hung, Michael R Dunia The angular momentum of any quantum system should be {it unambiguously} quantized. We show that such a quantization fails for a pure Dirac monopole due to a previously overlooked field angular momentum from the monopole-electric charge system coming from the magnetic field of the Dirac string and the electric field of the charge. Applying the point-splitting method to the monopole-charge system yields a total angular momentum which obeys the standard angular momentum algebra, but which is gauge {it variant}. In contrast it is possible to properly quantize the angular momentum of a topological 't Hooft-Polyakov monopole plus charge. This implies that pure Dirac monopoles are not viable -- only 't Hooft-Polyakov monopoles are theoretically consistent with angular momentum quantization and gauge invariance. |
Tuesday, April 25, 2023 3:06PM - 3:18PM |
SS03.00004: Neural Networks in Measurement of Electroweak WW/WZ Production in the Semileptonic Final States in Association with a High-mass Dijet System using the ATLAS Detector JianCong Zeng, Mark S Neubauer The analysis searches for electroweak diboson (WW/WZ/ZZ) production in association with a high-mass dijet system, using data from proton-proton collisions at a center-of-mass energy of √s = 13 TeV. The analysis is performed in the semi-leptonic final states which include a hadronic decay boson and a leptonic decay one. The analysis is split into three channels according to the number of electrically charged leptons from the leptonic boson decay: 0-lepton channel, 1-lepton channel, and 2-lepton channel. |
Tuesday, April 25, 2023 3:18PM - 3:30PM |
SS03.00005: Light-front effective potential between static sources John R Hiller, Sophia Chabysheva, Alexander Bray As a precursor to an investigation of confinement in light-front QCD, an effective potential between two fixed sources is computed in light-front quantization for a quenched scalar Yukawa theory. The quenching removes pair-production processes that would otherwise result in a spectrum unbounded from below. The sources are fixed with respect to ordinary time, but move in the light-front longitudinal direction. They are dressed by a neutral scalar field represented by a coherent state. This state is obtained nonperturbatively as an eigenstate of the model energy, with the eigenenergy determining the effective potential. The divergent self-energy is regulated by the addition of Pauli-Villars scalars. Although explicit rotational symmetry is broken by the use of light-front coordinates, the effective potential is rotationally symmetric and matches the standard Yukawa potential for scalar exchange. The immediate extension to Yukawa theory with fermionic sources and pair production will be outlined. |
Tuesday, April 25, 2023 3:30PM - 3:42PM |
SS03.00006: Q-balls in polynomial potentials Mikheil Sokhashvili, Julian Heeck Bosons carrying a conserved charge can form stable bound states if their Lagrangian contains |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700