Zobrazeno 1 - 10
of 223
pro vyhledávání: '"Maxim, Pospelov"'
Publikováno v:
Journal of High Energy Physics, Vol 2024, Iss 7, Pp 1-19 (2024)
Abstract Strongly-interacting dark matter can be accumulated in large quantities inside the Earth, and for dark matter particles in a few GeV mass range, it can exist in large quantities near the Earth’s surface. We investigate the constraints impo
Externí odkaz:
https://doaj.org/article/16e8802976ee45db90b8edbe77c1879d
Autor:
Maxim Pospelov
Publikováno v:
Nuclear Physics B, Vol 1003, Iss , Pp 116476- (2024)
I discuss implications of rare species of particles that have larger than commonly assumed interaction and/or annihilation cross sections. Large fractions of the parameter space of such models remain unexplored. I point out a number of the most inter
Externí odkaz:
https://doaj.org/article/aebb85c35914478595486c37fc0e673e
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 10, Pp 1-22 (2023)
Abstract We study the exotic muon decays with five charged tracks in the final state. First, we investigate the Standard Model rate for μ + → 3e + 2e − 2ν ( B $$ \mathcal{B} $$ = 4.0 × 10 −10) and find that the Mu3e experiment should have te
Externí odkaz:
https://doaj.org/article/233d8a562d3542bba491821186b783cc
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 8, Pp 1-15 (2023)
Abstract Stopped muons, which are generic in pion-at-rest experiments, can shed light on heavy neutral leptons (HNLs) in unexplored parameter spaces. If the HNL is lighter than the muon, the HNL can be produced from decays of muons and pions. The HNL
Externí odkaz:
https://doaj.org/article/3c11de0f68234218a06a52eecc695aa2
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 3, Pp 1-36 (2023)
Abstract We revisit the calculation of the electron, neutron, and proton electric dipole moments (EDMs) in the constrained minimal supersymmetric standard model (CMSSM). The relatively large mass of the Higgs boson, m H ≃ 125 GeV coupled with the (
Externí odkaz:
https://doaj.org/article/aef534ebdcf84a9899cdb21b9e635345
Publikováno v:
Journal of High Energy Physics, Vol 2023, Iss 2, Pp 1-30 (2023)
Abstract We consider a model with a complex scalar field that couples to (e, μ) or (μ, τ) within the “longevity” window: m l 1 − m l 2 m l 1 + m l 2 $$ \left[|{m}_{l_1}-{m}_{l_2}|,{m}_{l_1}+{m}_{l_2}\right] $$ in which l 1 and l 2 are the tw
Externí odkaz:
https://doaj.org/article/50e8583ec4344c12a33616e74cc2429f
Publikováno v:
Journal of High Energy Physics, Vol 2022, Iss 7, Pp 1-22 (2022)
Abstract We derive indirect limits on the charm and bottom quark electric dipole moments (EDMs) from paramagnetic AMO and neutron EDM experiments. The charm and bottom quark EDMs generate CP-odd photon-gluon operators and light quark EDMs at the c- a
Externí odkaz:
https://doaj.org/article/81530c11c0fa40d194237f701a3ead6c
Autor:
David McKeen, Maxim Pospelov
Publikováno v:
Universe, Vol 9, Iss 11, p 473 (2023)
It is possible that the proton is stable while atomic hydrogen is not. This is the case in models with new particles carrying baryon number which are light enough to be stable themselves, but heavy enough so that proton decay is kinematically blocked
Externí odkaz:
https://doaj.org/article/e3a862a041d64d07b08ad5c8ba7a1d39
Publikováno v:
Physics Letters B, Vol 835, Iss , Pp 137496- (2022)
Motivated by improved limits on electric dipole moments (EDMs), we revisit the three-loop light-by-light mechanism that transmits CP violation from a heavy fermion to a light one. Applying it to the electron EDM induced by EDMs of heavier flavors, we
Externí odkaz:
https://doaj.org/article/e71013135ab04d928e39111ac3d57efa
Autor:
Sayani Biswas, Lars Gerchow, Hubertus Luetkens, Thomas Prokscha, Aldo Antognini, Niklaus Berger, Thomas Elias Cocolios, Rugard Dressler, Paul Indelicato, Klaus Jungmann, Klaus Kirch, Andreas Knecht, Angela Papa, Randolf Pohl, Maxim Pospelov, Elisa Rapisarda, Peter Reiter, Narongrit Ritjoho, Stephanie Roccia, Nathal Severijns, Alexander Skawran, Stergiani Marina Vogiatzi, Frederik Wauters, Lorenz Willmann, Alex Amato
Publikováno v:
Applied Sciences, Vol 12, Iss 5, p 2541 (2022)
The toolbox for material characterization has never been richer than today. Great progress with all kinds of particles and interaction methods provide access to nearly all properties of an object under study. However, a tomographic analysis of the su
Externí odkaz:
https://doaj.org/article/83e466cc44094380acbdb4939f24e660