Landscapes at Colliders
Abstract
Theories with a large number of long-lived metastable vacua are our only concrete explanation for the puzzling value of the Cosmological Constant (CC). The energy scales where these vacua are realized are unknown. In this work, we consider the possibility that a sector of this landscape of vacua is within experimental reach and discuss its signatures at colliders. We find that striking large-multiplicity final states might have gone undetected due to their relatively small total energy. In particular, this could lead to new exotic Higgs decays, which are both intriguing and challenging to search for. In addition to a general phenomenological analysis of these theories, we also discuss an explicit model where the small values of the CC and the Higgs mass are jointly explained by Weinberg's anthropic argument and a low energy landscape.
Related
- Entanglement of momenta at colliders
- Comment on "Beam blow up due to beamstrahlung in circular e+e- colliders"
- Probing the proton structure with minimum bias and low-pt dimuon events at hadron colliders
- Phenomenology of heavy-flavour jet angularities at hadron colliders
- Toponium Production at Future Muon Colliders and in heavy ion ultraperipheral collisions
BibTeX
@article{dagnolo2026landscapes,
title = {{Landscapes at Colliders}},
author = {Raffaele Tito d'Agnolo and Manuel Ettengruber and Lian-Tao Wang},
journal = {Journal of High Energy Physics},
year = {2026},
month = sep,
doi = {10.1007/jhep09(2026)256},
eprint = {2512.18001},
archivePrefix = {arXiv},
url = {https://hal.science/hal-05458621v1},
note = {CC BY 4.0},
}
RIS
TY - JOUR
TI - Landscapes at Colliders
AU - Raffaele Tito d'Agnolo
AU - Manuel Ettengruber
AU - Lian-Tao Wang
PY - 2026
DA - 2026/09/24
JO - Journal of High Energy Physics
DO - 10.1007/jhep09(2026)256
UR - https://hal.science/hal-05458621v1
AB - Theories with a large number of long-lived metastable vacua are our only concrete explanation for the puzzling value of the Cosmological Constant (CC). The energy scales where these vacua are realized are unknown. In this work, we consider the possibility that a sector of this landscape of vacua is within experimental reach and discuss its signatures at colliders. We find that striking large-multiplicity final states might have gone undetected due to their relatively small total energy. In particular, this could lead to new exotic Higgs decays, which are both intriguing and challenging to search for. In addition to a general phenomenological analysis of these theories, we also discuss an explicit model where the small values of the CC and the Higgs mass are jointly explained by Weinberg's anthropic argument and a low energy landscape.
SN - 1126-6708
SN - 1029-8479
ER -