Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab

(ArgoNeuT Collaboration)

doi:10.1103/PhysRevLett.124.131801

Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab

(ArgoNeuT Collaboration)

Research output: Contribution to journal › Article › peer-review

48 Scopus citations

Abstract

A search for millicharged particles, a simple extension of the standard model, has been performed with the ArgoNeuT detector exposed to the Neutrinos at the Main Injector beam at Fermilab. The ArgoNeuT liquid argon time projection chamber detector enables a search for millicharged particles through the detection of visible electron recoils. We search for an event signature with two soft hits (MeV-scale energy depositions) aligned with the upstream target. For an exposure of the detector of 1.0×1020 protons on target, one candidate event has been observed, compatible with the expected background. This search is sensitive to millicharged particles with charges between 10-3e and 10-1e and with masses in the range from 0.1 to 3 GeV. This measurement provides leading constraints on millicharged particles in this large unexplored parameter space region.

Original language	English (US)
Article number	131801
Journal	Physical review letters
Volume	124
Issue number	13
DOIs	https://doi.org/10.1103/PhysRevLett.124.131801
State	Published - Apr 3 2020
Externally published	Yes

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© 2020 authors. Published by the American Physical Society. Funded by SCOAP

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title = "Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab",

abstract = "A search for millicharged particles, a simple extension of the standard model, has been performed with the ArgoNeuT detector exposed to the Neutrinos at the Main Injector beam at Fermilab. The ArgoNeuT liquid argon time projection chamber detector enables a search for millicharged particles through the detection of visible electron recoils. We search for an event signature with two soft hits (MeV-scale energy depositions) aligned with the upstream target. For an exposure of the detector of 1.0×1020 protons on target, one candidate event has been observed, compatible with the expected background. This search is sensitive to millicharged particles with charges between 10-3e and 10-1e and with masses in the range from 0.1 to 3 GeV. This measurement provides leading constraints on millicharged particles in this large unexplored parameter space region.",

author = "{(ArgoNeuT Collaboration)} and R. Acciarri and C. Adams and J. Asaadi and B. Baller and T. Bolton and C. Bromberg and F. Cavanna and D. Edmunds and Fitzpatrick, {R. S.} and B. Fleming and R. Harnik and C. James and I. Lepetic and Littlejohn, {B. R.} and Z. Liu and X. Luo and O. Palamara and G. Scanavini and M. Soderberg and J. Spitz and Szelc, {A. M.} and W. Wu and T. Yang",

note = "Publisher Copyright: {\textcopyright} 2020 authors. Published by the American Physical Society. Funded by SCOAP ",

year = "2020",

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doi = "10.1103/PhysRevLett.124.131801",

language = "English (US)",

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AU - (ArgoNeuT Collaboration)

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AU - Asaadi, J.

AU - Baller, B.

AU - Bolton, T.

AU - Bromberg, C.

AU - Cavanna, F.

AU - Edmunds, D.

AU - Fitzpatrick, R. S.

AU - Fleming, B.

AU - Harnik, R.

AU - James, C.

AU - Lepetic, I.

AU - Littlejohn, B. R.

AU - Liu, Z.

AU - Luo, X.

AU - Palamara, O.

AU - Scanavini, G.

AU - Soderberg, M.

AU - Spitz, J.

AU - Szelc, A. M.

AU - Wu, W.

AU - Yang, T.

PY - 2020/4/3

Y1 - 2020/4/3

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Improved Limits on Millicharged Particles Using the ArgoNeuT Experiment at Fermilab

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