Zobrazeno 1 - 10
of 184
pro vyhledávání: '"Strumia, A."'
Autor:
Ghoshal, Anish, Strumia, Alessandro
Supermassive black hole binaries source gravitational waves measured by Pulsar Timing Arrays. The frequency spectrum of this stochastic background is predicted more precisely than its amplitude. We argue that Dark Matter friction can suppress the spe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::754ebf83bea7a655dbf5f9b95e166f12
http://arxiv.org/abs/2306.17158
http://arxiv.org/abs/2306.17158
Autor:
Barducci, Daniele, Strumia, Alessandro
A muon collider could produce the heavier Standard Model particles with a boost, for example in resonant processes such as $\mu^-\mu^+\to h$ or $\mu^-\mu^+\to Z$. We discuss possible geometries that produce the boost (asymmetric beam energies, tilted
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::42666dd6369c5c84d1efdc16e4b44f55
http://arxiv.org/abs/2306.12480
http://arxiv.org/abs/2306.12480
Publikováno v:
Journal of High Energy Physics
String compactifications on an orbi-folded torus with complex structure give rise to chiral fermions, spontaneously broken CP, modular invariance. We show that this allows simple effective theories of flavour and CP where: i) the QCD angle vanishes;
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aad9c1469993265475c3ab96164dcac4
http://arxiv.org/abs/2305.08908
http://arxiv.org/abs/2305.08908
Autor:
Strumia, Alessandro
The Standard Model Higgs potential seems unstable at field values $h > h_{\rm top} \sim 10^{10}$ GeV. Vacuum decay can be triggered by $N\sim 4\pi/\lambda \sim 1000$ overlapped Higgs bosons with energy $\sqrt{\lambda} h_{\rm top}$. However, this conf
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1212fe1e26f7537cdad9bd65c410c525
Autor:
Strumia, Alessandro
Publikováno v:
Journal of High Energy Physics
We argue that the rate of Standard Model vacuum or thermal decay seeded by primordial black holes is negligible (because non-perturbatively suppressed by the small quartic Higgs coupling) and independent of the non-minimal coupling of the Higgs to gr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8afabebbf39eda80f0985dac3ccf7f56
http://arxiv.org/abs/2209.05504
http://arxiv.org/abs/2209.05504
Publikováno v:
Journal of High Energy Physics
Capabilities of future colliders are usually discussed assuming specific hypothetical new physics. We consider the opposite possibility: that no new physics is accessible, and we want to learn if the unnatural Standard Model is part of a vast landsca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f3dacac6ce77b36f7dd8c89173cbd8b8
Autor:
Kristjan Kannike, Niko Koivunen, Aleksei Kubarski, Luca Marzola, Martti Raidal, Alessandro Strumia, Venno Vipp
Publikováno v:
Physics Letters
We consider the classically scale invariant Higgs-dilaton model of dynamical symmetry breaking extended with an extra scalar field that plays the role of dark matter. The Higgs boson is light near a critical boundary between different symmetry breaki
Publikováno v:
Journal of High Energy Physics
Transforming canonical scalars to the Einstein frame can give a multi-field generalization of pole inflation (namely, a scalar with a divergent kinetic term) at vanishing field-dependent Planck mass. However, to obtain an attractor, the scalar potent
Autor:
Strumia, Alessandro
Publikováno v:
Journal of High Energy Physics
We perform a global fit of electroweak data, finding that the anomaly in the $W$ mass claimed by the CDF collaboration can be reproduced as a universal new-physics correction to the $T$ parameter or $| H^\dagger D_\mu H|^2$ operator. Contributions at
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::29296b5886f025932af0d0a1b4837a0a
Autor:
Strumia, Alessandro
Publikováno v:
Journal of High Energy Physics
We consider generic freeze-in processes for generation of Dark Matter, together with the consequent re-thermalization of the Standard Model fluid. We find that Dark Matter inherits the Standard Model adiabatic inhomogeneities on the cosmological scal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::08b0606704ac9d3a19ed71db1e5e3455