Searches for atmospheric long-lived particles

Argüelles, C.; Coloma, Pilar; Hernández, P.; Muñoz, Víctor

doi:10.1007/jhep02(2020)190

Cited by 40 publications

(31 citation statements)

References 66 publications

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“…The resulting spectrum dΦ Ds dSdtdld cos(θ)dE Ds of D s mesons is in good agreement with Fig. 2 from [45]. The total number of D s mesons produced in the direction of KM3NeT during the operating time 5 years was found to be N Ds 5 • 10 10 .…”

Section: Accurate Estimatesupporting

confidence: 83%

Constraints from the CHARM experiment on Heavy Neutral Leptons with tau mixing

Boiarska,

Boyarsky,

Mikulenko

et al. 2021

Preprint

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We re-analyze the results of the searches for Heavy Neutral Leptons (HNLs) by the CHARM experiment. We study HNL decay channel N → e + e − ν/µ + µ − ν and show that, in addition to the constraints on the HNL's mixings with νe or νµ, the same data also implies limits on the HNLs that mix only with ντ and have masses in the range 380 MeV < mN 1.6 GeV -the region in the parameter space that was considered in the literature as a target for HNLs searches.

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Section: Accurate Estimatesupporting

confidence: 83%

Constraints from the CHARM experiment on Heavy Neutral Leptons with tau mixing

Boiarska,

Boyarsky,

Mikulenko

et al. 2021

Preprint

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“…By measuring the relative rate of µ − π + and µ + π − events (assuming a detector with charge identification), this MF/DF distinction can be tested, as explored in Refs. [22,32,33,35,37, among others. If we consider final states with indistinguishable charged particles, e.g.…”

Section: Post-discovery Experiments To Determine Heavy Fermion Naturementioning

confidence: 99%

Characterizing Heavy Neutral Fermions via their Decays

de Gouvêa,

Fox,

Kayser

et al. 2021

Preprint

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Many extensions of the Standard Model of particle physics contain new electrically-neutral fermions. Should one of these particles be discovered, questions will naturally arise regarding its nature. For instance: is it a self-conjugate particle (i.e., is it a Dirac or a Majorana fermion)?, does it interact via the Standard Model force carriers or something else? One set of well-motivated particles in this class are Heavy Neutral Leptons (HNLs), Standard Model gauge-singlet fermions that mix with the neutrinos and may be produced in meson decays. We demonstrate that measuring the three body decays of the HNL (or phenomenologically similar heavy fermions) can help determine whether they are Majorana or Dirac fermions. We also investigate the ability to distinguish among different models for the physics responsible for the HNL decay. We compare the reach assuming full and partial event reconstruction, and propose experimental analyses. Should a new fermion be discovered, studying its three body decays provides a powerful diagnostic tool of its nature.

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“…As can be inferred from this result, the flux of MCPs for higher masses will become increasingly lower, as the contribution from the lightest mesons will be restrictive. The meson production rate were extracted using the MCEq package [6], following the procedure from reference [7].…”

Section: Pos(icrc2021)564mentioning

confidence: 99%

Searching for millicharged particles produced in cosmic-ray air showers

Muñoz¹,

Argüelles²,

Kelly³

2021

Proceedings of 37th International Cosmic Ray Conference — PoS(ICRC2021)

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Particles with small electric charges can be produced abundantly in extensive air-showers, generated from the collisions of cosmic rays with the earth's atmosphere. These millicharged particles can leave their imprints at underground experiments via scattering-off electrons. In this report, we present updated constraints using low energy data from Super-Kamiokande, and the XENON1T experiment. Moreover, we provide new sensitivity projections for millicharged particles in the future JUNO neutrino observatory, and discuss different search strategies including both, singlescattering events, and multiple-energy-deposition traces.

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Searches for atmospheric long-lived particles

Cited by 40 publications

References 66 publications

Constraints from the CHARM experiment on Heavy Neutral Leptons with tau mixing

Constraints from the CHARM experiment on Heavy Neutral Leptons with tau mixing

Characterizing Heavy Neutral Fermions via their Decays

Searching for millicharged particles produced in cosmic-ray air showers

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