Zobrazeno 1 - 10
of 89
pro vyhledávání: '"Strumia, A."'
Publikováno v:
Journal of High Energy Physics, Vol 2019, Iss 10, Pp 1-34 (2019)
Journal of High Energy Physics
Journal of High Energy Physics
We show that a new gauge group with one new scalar leads to automatically stable Dark Matter candidates. We consider theories where the Higgs phase is dual to the confined phase: it is known that SU(2) gauge theories with a scalar doublet (like the S
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-23 (2021)
Journal of High Energy Physics, Vol 2021, Iss 9, Pp 1-23 (2021)
First-order phase transitions can leave relic pockets of false vacua and their particles, that manifest as macroscopic Dark Matter. We compute one predictive model: a gauge theory with a dark quark relic heavier than the confinement scale. During the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b45e300bdd3254e2975be0d8f8030017
http://cds.cern.ch/record/2766348
http://cds.cern.ch/record/2766348
Publikováno v:
Physics Letters B, Vol 816, Iss, Pp 136241-(2021)
Physics Letters
Physics Letters
The Coleman-Weinberg mechanism can realise different phases of dynamical symmetry breaking. In each phase a combination of scalars, corresponding to the pseudo-Goldstone boson of scale invariance, has a loop-suppressed mass. We show that additional s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dc8fd72b4a22f79acfbc6689d8582ccd
http://arxiv.org/abs/2102.01084
http://arxiv.org/abs/2102.01084
Publikováno v:
Physical Review
We explore the possibility that theories with negative kinetic energy (ghosts) can be meta-stable up to cosmologically long times. In classical mechanics, ghosts undergo spontaneous lockdown rather than run-away if weakly-coupled and non-resonant. Ph
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebf0f763c58cedcde69d74dfff3b2cf8
http://hdl.handle.net/11568/1110577
http://hdl.handle.net/11568/1110577
Publikováno v:
Journal of High Energy Physics, Vol 2020, Iss 11, Pp 1-24 (2020)
Journal of High Energy Physics
Journal of High Energy Physics
We propose two models where a U(1) Peccei-Quinn global symmetry arises accidentally and is respected up to high-dimensional operators, so that the axion solution to the strong CP problem is successful even in the presence of Planck-suppressed operato
Publikováno v:
Gross, C, Mitridate, A, Redi, M, Smirnov, J & Strumia, A 2019, ' Cosmological abundance of colored relics ', Physical Review D, vol. 99, no. 1, 016024 . https://doi.org/10.1103/PhysRevD.99.016024
Physical Review
Physical Review
The relic cosmological abundance of stable or long-lived neutral colored particles gets reduced by about a few orders of magnitude by annihilations that occur after QCD confinement. We compute the abundance and the cosmological bounds on relic gluino
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d76bb954ec2d1e6fcb3d2d109b65cee5
https://findresearcher.sdu.dk:8443/ws/files/146546129/Cosmological_abundance_of_colored_relics.pdf
https://findresearcher.sdu.dk:8443/ws/files/146546129/Cosmological_abundance_of_colored_relics.pdf
Publikováno v:
Journal of High Energy Physics, Vol 2021, Iss 3, Pp 1-21 (2021)
Journal of High Energy Physics
Journal of High Energy Physics
A new dark sector consisting of a pure non-abelian gauge theory has no renormalizable interaction with SM particles, and can thereby realise gravitational Dark Matter (DM). Gauge interactions confine at a scale $\Lambda_{\rm DM}$ giving bound states
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::052abc5e42a3009789a4d7e0491c8c10
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-20 (2020)
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-20 (2020)
The cosmological constant and the Higgs mass seem unnaturally small and anthropically selected. We show that both can be efficiently scanned in Quantum Field Theories with a large enough number of vacua controllable thanks to approximated $\mathbb{Z}
Publikováno v:
Physical Review
We show that the electron recoil excess around 2 keV claimed by the Xenon collaboration can be fitted by DM or DM-like particles having a fast component with velocity of order $\sim 0.1$. Those particles cannot be part of the cold DM halo of our Gala
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5669b6dff3eca49601b5937f8f6e8710
Autor:
Luca Di Luzio, Jin-Wei Wang, Dario Buttazzo, Alessandro Strumia, Parsa Hossein Ghorbani, Daniele Teresi, Giacomo Landini, Christian Gross
Publikováno v:
Journal of High Energy Physics
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-47 (2020)
Journal of high energy physics 2020(1), 130 (2020). doi:10.1007/JHEP01(2020)130
Journal of High Energy Physics, Vol 2020, Iss 1, Pp 1-47 (2020)
Journal of high energy physics 2020(1), 130 (2020). doi:10.1007/JHEP01(2020)130
We consider theories with one gauge group (SU, SO or Sp) and one scalar in a two-index representation. The renormalizable action often has accidental symmetries (such as global U(1) or unusual group parities) that lead to one or more stable states, p
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::107766721e37c3f43191e937cfc45fe9
http://hdl.handle.net/11568/1028797
http://hdl.handle.net/11568/1028797