Characterizing dark matter signals with missing momentum experiments
Abstract
Fixed target missing-momentum experiments such as LDMX and M3 are powerful probes of light dark matter and other light, weakly coupled particles beyond the Standard Model (SM). Such experiments involve ~10 GeV beam particles whose energy and momentum are individually measured before and after passing through a suitably thin target. If new states are radiatively produced in the target, the recoiling beam particle loses a large fraction of its initial momentum, and no SM particles are observed in a downstream veto detector. We explore how such experiments can use kinematic variables and experimental parameters, such as beam energy and polarization, to measure properties of the radiated particles and discriminate between models if a signal is discovered. In particular, the transverse momentum of recoiling particles is shown to be a powerful tool to measure the masses of new radiated states, offering significantly better discriminating ability compared to the recoil energy alone. We further illustrate how variations in beam energy, polarization, and lepton flavor (i.e., electron or muon) can be used to disentangle the possible the Lorentz structure of the new interactions.
- Authors:
- Publication Date:
- Research Org.:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Oak Ridge Institute for Science and Education (ORISE), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Workforce Development for Teachers and Scientists (WDTS)
- OSTI Identifier:
- 1767357
- Alternate Identifier(s):
- OSTI ID: 1769395
- Report Number(s):
- FERMILAB-PUB-20-501-T ; arXiv:2010.03577
Journal ID: ISSN 2470-0010; PRVDAQ; 035030
- Grant/Contract Number:
- AC02-07CH11359; SC0014664
- Resource Type:
- Published Article
- Journal Name:
- Physical Review. D.
- Additional Journal Information:
- Journal Name: Physical Review. D. Journal Volume: 103 Journal Issue: 3; Journal ID: ISSN 2470-0010
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
Citation Formats
Blinov, Nikita, Krnjaic, Gordan, and Tuckler, Douglas. Characterizing dark matter signals with missing momentum experiments. United States: N. p., 2021.
Web. doi:10.1103/PhysRevD.103.035030.
Blinov, Nikita, Krnjaic, Gordan, & Tuckler, Douglas. Characterizing dark matter signals with missing momentum experiments. United States. https://doi.org/10.1103/PhysRevD.103.035030
Blinov, Nikita, Krnjaic, Gordan, and Tuckler, Douglas. Thu .
"Characterizing dark matter signals with missing momentum experiments". United States. https://doi.org/10.1103/PhysRevD.103.035030.
@article{osti_1767357,
title = {Characterizing dark matter signals with missing momentum experiments},
author = {Blinov, Nikita and Krnjaic, Gordan and Tuckler, Douglas},
abstractNote = {Fixed target missing-momentum experiments such as LDMX and M3 are powerful probes of light dark matter and other light, weakly coupled particles beyond the Standard Model (SM). Such experiments involve ~10 GeV beam particles whose energy and momentum are individually measured before and after passing through a suitably thin target. If new states are radiatively produced in the target, the recoiling beam particle loses a large fraction of its initial momentum, and no SM particles are observed in a downstream veto detector. We explore how such experiments can use kinematic variables and experimental parameters, such as beam energy and polarization, to measure properties of the radiated particles and discriminate between models if a signal is discovered. In particular, the transverse momentum of recoiling particles is shown to be a powerful tool to measure the masses of new radiated states, offering significantly better discriminating ability compared to the recoil energy alone. We further illustrate how variations in beam energy, polarization, and lepton flavor (i.e., electron or muon) can be used to disentangle the possible the Lorentz structure of the new interactions.},
doi = {10.1103/PhysRevD.103.035030},
journal = {Physical Review. D.},
number = 3,
volume = 103,
place = {United States},
year = {Thu Feb 25 00:00:00 EST 2021},
month = {Thu Feb 25 00:00:00 EST 2021}
}
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