# Preprints

 2022-12-0614:56 [PUBDB-2022-07367] Preprint Reuter, J. ; Han, T. ; Kilian, W. ; et al Precision test of the muon-Higgs coupling at a high-energy muon collider [DESY-22-187; PITT-PACC 2214; SI-HEP-2022-34; arXiv:2212.01323] We explore the sensitivity of directly testing the muon-Higgs coupling at a high-energy muon collider. This is strongly motivated if there exists new physics that is not aligned with the Standard Model Yukawa interactions which are responsible for the fermion mass generation. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0614:27 [PUBDB-2022-07366] Preprint Funcke, L. ; Hartung, T. ; Jansen, K. ; et al Best-approximation error for parametric quantum circuits [arXiv:2107.07378] In Variational Quantum Simulations, the construction of a suitable parametric quantum circuit is subject to two counteracting effects. The number of parameters should be small for the device noise to be manageable, but also large enough for the circuit to be able to represent the solution. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0613:43 [PUBDB-2022-07365] Preprint Abbasi, R. ; Ackermann, M. ; Adams, J. ; et al Evidence for neutrino emission from the nearby active galaxy NGC 1068 [arXiv:2211.09972]   A supermassive black hole, obscured by cosmic dust, powers the nearby active galaxy NGC 1068. Neutrinos, which rarely interact with matter, could provide information on the galaxy’s active core. [...] Restricted: PDF PDF (PDFA); 2022-12-0613:12 [PUBDB-2022-07362] Preprint Shaw, V. ; van Vliet, A. ; Taylor, A. M. Galactic halo bubble magnetic fields and UHECR deflections [arXiv:2202.06780] We consider the synchrotron emission from electrons out in the Galactic halo bubble region where the Fermi bubble structures reside. Utilizing a simple analytical expression for the non-thermal electron distribution and a toy magnetic field model, we simulate polarized synchrotron emission maps at a frequency of 30 GHz. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0612:56 [PUBDB-2022-07361] Preprint Alexandrou, C. ; Funcke, L. ; Hartung, T. ; et al Using classical bit-flip correction for error mitigation in quantum computations including 2-qubit correlations [MIT-CTP/5352; arXiv:2111.08551] We present an error mitigation scheme which corrects readout errors on Noisy Intermediate-Scale Quantum (NISQ) computers [1,2]. After a short review of applying the method to one qubit, we proceed to discuss the case when correlations between different qubits occur. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0612:37 [PUBDB-2022-07360] Preprint Funcke, L. ; Jansen, K. ; Kühn, S. CP-violating Dashen phase transition in the two-flavor Schwinger model: a study with matrix product states [MIT-CTP/5348; arXiv:2110.15642] We numerically study the Hamiltonian lattice formulation of the two-flavor Schwinger model using matrix product states. Keeping the mass of the first flavor at a fixed positive value, we tune the mass of the second flavor through a range of negative values, thus exploring a regime where conventional Monte Carlo methods suffer from the sign problem and may run into instabilities due to zero modes. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0516:03 [PUBDB-2022-07328] Preprint Alexander, G. ; Barley, J. ; Batygin, Y. ; et al Observation of Polarized Positrons from an Undulator-Based Source [CLNS-08-2023; COCKCROFT-08-03; DCPT-08-24; DESY 08-025; IPPP-08-12; SLAC-PUB-13145] An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a scheme in which a multi-GeV electron beam passed through a helical undulator to generate multi-MeV, circularly polarized photons which were then converted in a thin target to produce positrons (and electrons) with longitudinal polarization above 80% at 6 MeV. The results are in agreement with Geant4 simulations that include the dominant polarization-dependent interactions of electrons, positrons, and photons in matter.. OpenAccess: PDF PDF (PDFA); 2022-12-0515:58 [PUBDB-2022-07326] Preprint Fuchs, J. ; Schellekens, B. ; Schweigert, C. The resolution of field identification fixed points in diagonal coset theories [DESY-95-173; NIKHEF-95-052; hep-th/9509105] The fixed point resolution problem is solved for diagonal coset theories. The primary fields into which the fixed points are resolved are described by submodules of the branching spaces, obtained as eigenspaces of the automorphisms that implement field identification. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0515:08 [PUBDB-2022-07318] Preprint Freitas, A. ; Miller, D. J. ; Zerwas, P. Pair production of smuons and selectrons near threshold in $e^+ e^-$ and $e^- e^-$ collisions [DESY-01-066; LC-TH-2001-011; hep-ph/0106198] Non-zero width and Coulomb rescattering effects are analyzed for the pair production of smuons and selectrons near the thresholds in e+ e- and e- e- collisions, respectively. The excitation curves are predicted in a gauge-invariant form. [...] OpenAccess: PDF PDF (PDFA); 2022-12-0515:06 [PUBDB-2022-07317] Preprint Meyer, D. ; Velazquez, P. F. ; Petruk, O. ; et al Rectangular core-collapse supernova remnants: application to Puppis A [arXiv:2206.14495] Core-collapse supernova remnants are the gaseous nebulae of galactic interstellar media (ISM) formed after the explosive death of massive stars. Their morphology and emission properties depend both on the surrounding circumstellar structure shaped by the stellar wind–ISM interaction of the progenitor star and on the local conditions of the ambient medium. [...] OpenAccess: PDF PDF (PDFA);