New bounds on axion-like particles from MicroBooNE

Coloma, Pilar; Hernández, P.; Urrea, Salvador

doi:10.1007/jhep08(2022)025

Cited by 9 publications

(2 citation statements)

References 60 publications

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“…In this proceeding we summarize the results of [1352]. In neutrino experiments using a conventional beam, a fraction of the accelerated protons (which can be as large as 10-15%) does not get stopped by the target and ends up hitting the absorber at the end of the decay pipe.…”

Section: Introductionmentioning

confidence: 99%

“…The regions enclosed by the colored lines satisfy ∆χ 2 > 3.84, corresponding to 95% CL for 1 degree of freedom (d.o.f.). Solid lines assume assumed the systematics used in[1353] for the e + e − search; dashed lines assume that those systematics can be reduced to 20%; and dotted lines indicate the no-background limit, taking 20% of systematics (see[1352] for details). The shaded areas show current bounds from BaBar[1358], E137[1359,185], NA62[1175,1177], E787 & E949[1360], LHCb[1361,1362,1357], CHARM[742,1363], NA64[745] and LEP[748].…”

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confidence: 99%

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Feebly-interacting particles: FIPs 2020 workshop report

et al. 2021

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With the establishment and maturation of the experimental programs searching for new physics with sizeable couplings at the LHC, there is an increasing interest in the broader particle and astrophysics community for exploring the physics of light and feebly-interacting particles as a paradigm complementary to a New Physics sector at the TeV scale and beyond. FIPs 2020 has been the first workshop fully dedicated to the physics of feebly-interacting particles and was held virtually from 31 August to 4 September 2020. The workshop has gathered together experts from collider, beam dump, fixed target experiments, as well as from astrophysics, axions/ALPs searches, current/future neutrino experiments, and dark matter direct detection communities to discuss progress in experimental searches and underlying theory models for FIPs physics, and to enhance the cross-fertilisation across different fields. FIPs 2020 has been complemented by the topical workshop “Physics Beyond Colliders meets theory”, held at CERN from 7 June to 9 June 2020. This document presents the summary of the talks presented at the workshops and the outcome of the subsequent discussions held immediately after. It aims to provide a clear picture of this blooming field and proposes a few recommendations for the next round of experimental results.

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Section: Introductionmentioning

confidence: 99%

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Feebly-interacting particles: FIPs 2020 workshop report

et al. 2021

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New physics searches using ProtoDUNE and the CERN SPS accelerator

Coloma,

López-Pavón,

Molina-Bueno

et al. 2024

J. High Energ. Phys.

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The exquisite capabilities of liquid Argon Time Projection Chambers make them ideal to search for weakly interacting particles in Beyond the Standard Model scenarios. Given their location at CERN the ProtoDUNE detectors may be exposed to a flux of such particles, produced in the collisions of 400 GeV protons (extracted from the Super Proton Synchrotron accelerator) on a target. Here we point out the interesting possibilities that such a setup offers to search for both long-lived unstable particles (Heavy Neutral Leptons, axion-like particles, etc) and stable particles (e.g. light dark matter, or millicharged particles). Our results show that, under conservative assumptions regarding the expected luminosity, this setup has the potential to improve over present bounds for some of the scenarios considered. This could be done within a short timescale, using facilities that are already in place at CERN, and without interfering with the experimental program in the North Area at CERN.

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Keeping it simple: simplified frameworks for long-lived particles at neutrino facilities

Batell,

Huang,

Kelly

2023

J. High Energ. Phys.

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Modern-day accelerator neutrino facilities are excellent venues for searches for new-physics particles. Many distinct new-physics models predict overlapping signatures and phenomenology in these experiments. In this work, we advocate for the adoption of simplified frameworks when studying these types of new-physics signatures, which are characterized by a small number of primary variables, including particle masses, lifetimes, and production and decay modes/rates that most directly control signal event rates and kinematics. In particular, taking the example of long-lived particles that decay inside a neutrino detector as a test case, we study formulate and study simplified frameworks in the context of light scalars/fermions produced in kaon decays which then decay into final states containing an electron-positron pair. We show that using these simplified frameworks can allow for individual experimental analyses to be applicable to a wide variety of specific model scenarios. As a side benefit, we demonstrate that using this approach can allow for the T2K collaboration, by reinterpreting its search for Heavy Neutral Leptons, to be capable of setting world-leading limits on the Higgs-Portal Scalar model. Furthermore, we argue the simplified framework interpretation can serve as a bridge to model identification in the hopeful detection of a new-physics signal. As an illustration, we perform a first determination of the likelihood that, in the presence of a new-physics signal in a detector like the DUNE ND-GAr, multiple different new-physics hypotheses (such as the Higgs-Portal Scalar and Heavy Neutral Lepton ones) can be disentangled. We demonstrate that this model discrimination is favorable for some portions of detectable new-physics parameter space but for others, it is more challenging.

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New bounds on axion-like particles from MicroBooNE

Cited by 9 publications

References 60 publications

Feebly-interacting particles: FIPs 2020 workshop report

Feebly-interacting particles: FIPs 2020 workshop report

New physics searches using ProtoDUNE and the CERN SPS accelerator

Keeping it simple: simplified frameworks for long-lived particles at neutrino facilities

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