Leptogenesis in supersymmetry with one L violating coupling

Adhikari, R.; Dasgupta, Arnab

doi:10.1140/epjc/s10052-021-09406-z

Cited by 4 publications

(4 citation statements)

References 61 publications

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“…The COSINE-100 experiment has been operating at Yangyang underground laboratory in Korea with a total of 106 kg of low-background NaI(Tl) detectors during the last six years [6,7,[18][19][20][21][22]. Although many exciting results were published, reaching an unambiguous assumption on the annual modulation signal of the DAMA experiment is far from the conclusion [23,24].…”

Section: Introductionmentioning

confidence: 99%

“…Although many exciting results were published, reaching an unambiguous assumption on the annual modulation signal of the DAMA experiment is far from the conclusion [23,24]. It is mainly due to the observed background rate in the COSINE-100 detectors, which is 2.5 times higher than the background of the DAMA detectors [19,25]. To take the challenge in world competitive searches for low-mass dark matter and reach a definite conclusion for the DAMA/LIBRA, we are preparing the COSINE-200 experiment as the next phase of the COSINE-100 [17,26].…”

Section: Introductionmentioning

confidence: 99%

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A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment

et al. 2020

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COSINE-200 is the next phase experiment of the ongoing COSINE-100 that aims to unambiguously verify the annual modulation signals observed by the DAMA experiment and to reach the world competitive sensitivity on the low-mass dark matter search. To achieve the physics goal of the COSINE-200, the successful production of the low-background NaI(Tl) detectors is crucial and it must begin from the mass production of the ultra-low background NaI powder. A clean facility for massproducing the pure-NaI powder has been constructed at the Center for Underground Physics (CUP) in Korea. Two years of operation determined efficient parameters of the mass purification and provided a total of 480 kg of the ultra-pure NaI powder in hand. The potassium concentration in the produced powders varied from 5.4 to 11 ppb, and the maximum production capacity of 35 kg per two weeks was achieved. Here, we report our operational practice with the mass purification of the NaI powder, which includes raw powder purification, recycling of the mother solution, and recovery of NaI from the residual melt that remained after crystal growth.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment

et al. 2020

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“…A big advantage of this approach is simplicity and scalability. Uniquely in LAr, pulse-shape discrimination of S1 signals provides a powerful electronic recoil discrimination power, on the level of 10 9 at threshold [27].…”

Section: Pos(taup2023)018mentioning

confidence: 99%

Status of direct detection searches of heavy dark matter

Kuzniak

2024

Proceedings of XVIII International Conference on Topics in Astroparticle and Underground Physics — PoS(TAUP2023)

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Dark matter accounts for 26% of the mass-energy density of the Universe, however, its nature and origins remain the most important open questions in physics. The search for Weakly Interacting Massive Particles (WIMPs), one of the leading dark matter particle candidates, is now in a decisive phase, with experiments targeting both the high-mass and the low-mass (1-10 GeV/𝑐 2 ) WIMP scenarios. The status of the leading experimental searches is discussed, together with their prospects and challenges they are facing. Searches of heavy non-WIMP dark matter candidates are also briefly summarized.

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“…The number of reconstructed photoelectrons (PE) increases with the cross-section, which is indeed proportional to the number of scatterings along the argon target. F 𝑝𝑟 𝑜𝑚 𝑝𝑡 is the pulse shape discrimination parameter in DEAP-3600, optimized to reject background events from WIMP events by looking at the fraction of the prompt scintillation light [5]. N 𝑝𝑒𝑎𝑘𝑠 is the number of dominant peaks along the photoelectron time distribution, which is determined according to the local time derivative.…”

Section: Entering the Multi-scatter Gamementioning

confidence: 99%

First direct detection constraints on Planck-scale mass dark matter in DEAP-3600

Lai¹

2022

Proceedings of 41st International Conference on High Energy Physics — PoS(ICHEP2022)

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Several astrophysical observations suggest that about 27 % of all the energy in the Universe is due to a non-luminous, non-relativistic kind of matter, the "dark matter". Among all the possible models that can fulfill the observed abundance, one of the most promising are Weakly Interacting Particles (WIMPs), thermal relics with masses below 100 TeV. Despite the high number of attempts during the last two decades to directly detect WIMPs, no confirmed discovery has been made. Hence, the interest in other dark matter candidates has recently increased, even motivating the search for super-massive dark matter candidates. These dark matter candidates might have been produced non-thermally, as radiation from primordial black holes, decay products of the inflaton, or as products of a dark sector with an extended thermal production mechanism. DEAP-3600, with a target of 3.3 tonnes of liquid argon, is the largest running direct detection experiment in terms of size. Though it is designed for the WIMP search, it is also sensitive to candidates with masses from 10 7 GeV to 10 19 GeV. Due to the high cross-section and the large area of the detector, the expected signal is a track of collinear nuclear recoils, different from both WIMPs and most of the backgrounds. This motivated the development of a custom analysis, looking for a multi-scattering dark matter signature. Thanks to the quality of the selection cuts, four different Regions of Interest have been defined, each with a background level of much less than one event in three years of data taking. After the unblinding, no events were found; consequently, world-leading constraints on two composite dark matter models, up to Planck-scale masses.

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Leptogenesis in supersymmetry with one L violating coupling

Cited by 4 publications

References 61 publications

A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment

A facility for mass production of ultra-pure NaI powder for the COSINE-200 experiment

Status of direct detection searches of heavy dark matter

First direct detection constraints on Planck-scale mass dark matter in DEAP-3600

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