First Direct Limits on Lightly Ionizing Particles with Electric Charge Less than 
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Agnese, R.; Anderson, A. J.; Balakishiyeva, D.; Thakur, R. Basu; Bauer, D. A.; Billard, J.; Borgland, A. W.; Bowles, M. A.; Brandt, D.; Brink, P. L.; Bunker, R.; Cabrera, B.; Caldwell, D. O.; Cerdeño, David G.; Chagani, H.; Chen, Y.; Cooley, J.; Cornell, B.; Crewdson, C. H.; Cushman, P.; Daal, M.; Stefano, P. C. F. Di; Doughty, T.; Esteban, Luis; Fallows, S.; Figueroa‐Feliciano, E.; Godfrey, G.; Golwala, S. R.; Hall, J.; Harris, H. R.; Hertel, S. A.; Höfer, T.; Holmgren, D.; Hsu, L.; Huber, M. E.; Jastram, A.; Kamaev, O.; Kara, Burhan; Kelsey, M.; Kennedy, A.; Kiveni, M.; Koch, K.; Leder, A.; Loer, B.; Asamar, E. Lopez; Mahapatra, R.; Mandic, V.; Martínez, C. Moreno; McCarthy, K. A.; Mirabolfathi, N.; Moffatt, R. A.; Moore, David C.; Nelson, H. N.; Nelson, Robert H.; Ogburn, R. W.; Page, K.; Page, W. A.; Partridge, R.; Pepin, M.; Phipps, A.; Prasad, K.; Pyle, M.; Qiu, H.; Rau, W.; Redl, P.; Reisetter, A.; Ricci, Y.; Rogers, H. E.; Saab, T.; Sadoulet, B.; Sander, J.; Schneck, K.; Schnee, R. W.; Scorza, S.; Serfass, B.; Shank, B.; Speller, D.; Upadhyayula, S.; Villano, A. N.; Welliver, B.; Wright, D. H.; Yellin, S.; Yen, J. J.; Young, B. A.; Zhang, J.

doi:10.1103/physrevlett.114.111302

Cited by 25 publications

(19 citation statements)

References 22 publications

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“…One immediate consequence of our calculation of the cosmic ray-induced MCP flux is that existing bounds on a naturally occurring flux of MCPs can be converted into constraints on Lagrangian parameters and m χ , where the MCP charge is Q χ = × e. In fact, multiple such bounds already exist in the literature, but have never been translated into the − m χ plane because the relation between , m χ and the flux from cosmic rays had never been made explicit. Examples include constraints from MACRO [56,57], Kamiokande-II [64], LSD [65], CDMS [66] and Majorana [58]. Interestingly we find the resulting constraints to be roughly competitive with those from existing collider experiments, but sub-dominant to reported bounds from neutrino experiments [16,59,60].…”

Section: Introductionmentioning

confidence: 57%

New Constraints on Millicharged Particles from Cosmic-ray Production

Plestid,

Takhistov,

Tsai

et al. 2020

Preprint

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We study the production of exotic millicharged particles (MCPs) from cosmic ray-atmosphere collisions, which constitutes a permanent MCP production source for all terrestrial experiments. Our calculation of the MCP flux can be used to reinterpret existing limits from experiments such as MACRO and Majorana on an ambient flux of ionizing particles. Large-scale underground neutrino detectors are particularly favorable targets for the resulting MCPs. Using available data from the Super-K experiment, we set new limits on MCPs, which are the best in sensitivity reach for the mass range 0.1 mχ 0.5 GeV, and which are competitive with accelerator-based searches for masses up to 1.5 GeV. Applying these constraints to models where a sub-dominant component of dark matter (DM) is fractionally charged allows us to probe parts of the parameter space that are challenging for conventional direct-detection DM experiments, independently of any assumptions about the DM abundance. These results can be further improved with the next generation of large-scale neutrino detectors.

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Section: Introductionmentioning

confidence: 57%

New Constraints on Millicharged Particles from Cosmic-ray Production

Plestid,

Takhistov,

Tsai

et al. 2020

Preprint

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“…Hence, the limits presented . Results from MACRO [55], Kamiokande-II [56], LSD [57], and CDMS [59] are shown as well. All limits assume an isotropic flux.…”

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confidence: 95%

“…Direct searches for LIPs, including MACRO [54,55], Kamiokande-II [56], and LSD [57] placed stringent limits on the LIP flux for 0.4 < f < 6. The Cryogenic Dark Matter Search (CDMS) experiment [58,59] placed limits on exotic particles with f < 200 using a direct search technique. A 2009 review [60] summarizes the experimental state of the field prior to the results of CDMS in 2010.…”

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confidence: 99%

First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as e/1000 with the Majorana Demonstrator

Alvis¹,

Arnquist²,

Avignone³

et al. 2018

Phys. Rev. Lett.

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The Majorana Demonstrator is an ultralow-background experiment searching for neutrinoless double-beta decay in ^{76}Ge. The heavily shielded array of germanium detectors, placed nearly a mile underground at the Sanford Underground Research Facility in Lead, South Dakota, also allows searches for new exotic physics. Free, relativistic, lightly ionizing particles with an electrical charge less than e are forbidden by the standard model but predicted by some of its extensions. If such particles exist, they might be detected in the Majorana Demonstrator by searching for multiple-detector events with individual-detector energy depositions down to 1 keV. This search is background-free, and no candidate events have been found in 285 days of data taking. New direct-detection limits are set for the flux of lightly ionizing particles for charges as low as e/1000.

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“…MCPs are heavily explored in terrestrial experiments, and their signatures as dark matter is also studied in astrophysical/cosmological observations [246,[394][395][396][397][398][399][400][401][402][403][404]. Our focus here is to briefly describe and classify the accelerator-based probes.…”

Section: Introductionmentioning

confidence: 99%

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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First Direct Limits on Lightly Ionizing Particles with Electric Charge Less than e/6

Cited by 25 publications

References 22 publications

New Constraints on Millicharged Particles from Cosmic-ray Production

New Constraints on Millicharged Particles from Cosmic-ray Production

First Limit on the Direct Detection of Lightly Ionizing Particles for Electric Charge as Low as e/1000 with the Majorana Demonstrator

Feebly-interacting particles: FIPs 2020 workshop report

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