Forecasting dark showers at Belle II
Abstract
Dark showers from strongly interacting dark sectors that confine at the GeV scale can give rise to novel signatures at e+e- colliders. In this work, we study the sensitivity of B factory experiments to dark showers produced through an effective interaction arising from a heavy off-shell mediator. We show that a prospective search for displaced vertices from GeV-scale long-lived particles at Belle II can improve the sensitivity to dark showers substantially compared to an existing search at BaBar. We compare the sensitivity of searches for displaced signals to searches for promptly produced resonances at BaBar and KLOE and calculate sensitivity projections for a single-photon search at Belle II to invisible dark showers produced through an effective interaction. The underlying structure of the effective interaction can be resolved at higher-energy experiments, where the mediator can be produced on-shell. To study the resulting constraints, we update electroweak precision bounds on kinetically mixed Z' bosons and reinterpret a search for low-mass di-muon resonances at LHCb in terms of dark showers. We find that LHCb and Belle II are most sensitive to different particle decay lengths, underscoring the complementarity of LHC and intensity frontier experiments.
- Authors:
-
- RWTH Aachen University (Germany); Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States)
- RWTH Aachen University (Germany)
- Karlsruhe Institute of Technology (KIT) (Germany)
- University of British Columbia, Vancouver, BC (Canada); University of Victoria, BC (Canada)
- RWTH Aachen University (Germany); Karlsruhe Institute of Technology (KIT) (Germany)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- Publication Date:
- Research Org.:
- Fermi National Accelerator Lab. (FNAL), Batavia, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), High Energy Physics (HEP); German Research Foundation (DFG); Helmholtz (HGF) Young Investigators Grant; Natural Sciences and Engineering Research Council of Canada (NSERC)
- OSTI Identifier:
- 1861829
- Report Number(s):
- P3H-22-033; TTK-22-12; FERMILAB-PUB-22-140-T; TTP22-019; DESY-22-047; arXiv:2203.08824
Journal ID: ISSN 1029-8479; oai:inspirehep.net:2054069; TRN: US2305496
- Grant/Contract Number:
- AC02-07CH11359; 396021762; KA 4662/1-1; 390833306; VH-NG-1303
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of High Energy Physics (Online)
- Additional Journal Information:
- Journal Name: Journal of High Energy Physics (Online); Journal Volume: 2022; Journal Issue: 12; Journal ID: ISSN 1029-8479
- Publisher:
- Springer Nature
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS; dark matter at colliders, new light particles
Citation Formats
Bernreuther, Elias, Böse, Kai, Ferber, Torben, Hearty, Christopher, Kahlhoefer, Felix, Morandini, Alessandro, and Schmidt-Hoberg, Kai. Forecasting dark showers at Belle II. United States: N. p., 2022.
Web. doi:10.1007/jhep12(2022)005.
Bernreuther, Elias, Böse, Kai, Ferber, Torben, Hearty, Christopher, Kahlhoefer, Felix, Morandini, Alessandro, & Schmidt-Hoberg, Kai. Forecasting dark showers at Belle II. United States. https://doi.org/10.1007/jhep12(2022)005
Bernreuther, Elias, Böse, Kai, Ferber, Torben, Hearty, Christopher, Kahlhoefer, Felix, Morandini, Alessandro, and Schmidt-Hoberg, Kai. Thu .
"Forecasting dark showers at Belle II". United States. https://doi.org/10.1007/jhep12(2022)005. https://www.osti.gov/servlets/purl/1861829.
@article{osti_1861829,
title = {Forecasting dark showers at Belle II},
author = {Bernreuther, Elias and Böse, Kai and Ferber, Torben and Hearty, Christopher and Kahlhoefer, Felix and Morandini, Alessandro and Schmidt-Hoberg, Kai},
abstractNote = {Dark showers from strongly interacting dark sectors that confine at the GeV scale can give rise to novel signatures at e+e- colliders. In this work, we study the sensitivity of B factory experiments to dark showers produced through an effective interaction arising from a heavy off-shell mediator. We show that a prospective search for displaced vertices from GeV-scale long-lived particles at Belle II can improve the sensitivity to dark showers substantially compared to an existing search at BaBar. We compare the sensitivity of searches for displaced signals to searches for promptly produced resonances at BaBar and KLOE and calculate sensitivity projections for a single-photon search at Belle II to invisible dark showers produced through an effective interaction. The underlying structure of the effective interaction can be resolved at higher-energy experiments, where the mediator can be produced on-shell. To study the resulting constraints, we update electroweak precision bounds on kinetically mixed Z' bosons and reinterpret a search for low-mass di-muon resonances at LHCb in terms of dark showers. We find that LHCb and Belle II are most sensitive to different particle decay lengths, underscoring the complementarity of LHC and intensity frontier experiments.},
doi = {10.1007/jhep12(2022)005},
journal = {Journal of High Energy Physics (Online)},
number = 12,
volume = 2022,
place = {United States},
year = {Thu Dec 01 00:00:00 EST 2022},
month = {Thu Dec 01 00:00:00 EST 2022}
}
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