Search for magnetic monopoles with ten years of the ANTARES neutrino telescope

Self Cite

In this work, a search for nuclearites of strange quark matter by using nine years of ANTARES data taken in the period 2009–2017 is presented. The passage through matter of these particles is simulated taking into account a detailed description of the detector response to nuclearites and of the data acquisition conditions. A down-going flux of cosmic nuclearites with Galactic velocities (β = 10-3) was considered for this study. The mass threshold for detecting these particles at the detector level is 4 × 1013 GeV/c 2. Upper limits on the nuclearite flux for masses up to 1017 GeV/c 2 at the level of ∼ 5 × 10-17 cm-2 s-1 sr-1 are obtained. These are the first upper limits on nuclearites established with a neutrino telescope and the most stringent ever set for Galactic velocities.

Section: Systematic Uncertaintiesmentioning

confidence: 99%

Limits on the nuclearite flux using the ANTARES neutrino telescope

Albert

Alves

André

et al. 2023

Self Cite

“…In Table 1 we show the observational upper limits on F TSM from the MACRO [49] and IceCube experiments [50,53]. The ANTARES telescope [54] [49][50][51].…”

Section: Present Monopole Number Density From Metastable Stringsmentioning

confidence: 99%

Gravitational waves from quasi-stable strings

Lazarides

Maji

Shafi

2022

We estimate the stochastic gravitational wave spectrum emitted from a network of cosmic strings in which the latter are effectively stable against breaking by monopole pair creation. The monopoles are produced at a higher scale from an earlier symmetry breaking and experience significant inflation before reentering the horizon. This gives rise to monopole-antimonopole pairs connected by string segments and the string loop formation essentially ceases. As a consequence, the lower frequency portion of the gravitational wave spectrum is suppressed relative to the no-inflation case with stable strings, which evades the stringent PPTA bound on the dimensionless string tension Gμ. We display the modified spectrum, accessible in the ongoing and future experiments, for Gμ values in the range 10-10–10-15. We show how this 'quasi-stable' string network is realized in realistic grand unified theories.

“…In table 1 we show the observational upper limits on F TSM from the MACRO [51] and IceCube experiments [52,55]. The ANTARES telescope [56] also provides an upper bound on the relativistic monopole flux which is more or less comparable with the Icecube bound. The IceCube experiment also provides [57] a bound on the flux of low relativistic velocity (v TSM ≃ 0.1−0.55) monopoles with masses ∼ 10 11 −10 13 GeV.…”

Section: Jcap05(2024)128 4 Present Monopole Number Density From Metas...mentioning

confidence: 95%

Quantum tunneling in the early universe: stable magnetic monopoles from metastable cosmic strings

Lazarides,

Maji,

Shafi

2024

We present a novel mechanism for producing topologically stable monopoles (TSMs) from the quantum mechanical decay of metastable cosmic strings in the early universe. In an SO(10) model this mechanism yields TSMs that carry two units (4π/e) of Dirac magnetic charge as well as some color magnetic charge which is screened. For a dimensionless string tension parameter Gμ ≈ 10-9-10-5, the monopoles are superheavy with masses of order 1015-1017 GeV. Monopoles with masses of order 108-1014 GeV arise from metastable strings for Gμ values from ∼ 10-22 to 10-10. We identify the parameter space for producing these monopoles at an observable level with detectors such as IceCube and KM3NeT. For lower Gμ values the ultra-relativistic monopoles should be detectable at Pierre Auger and ANITA. The stochastic gravitational wave emission arise from metastable strings with Gμ ∼ 10-9-10-5 and should be accessible at HLVK and future detectors including the Einstein Telescope and Cosmic Explorer. An E 6 extension based on this framework would yield TSMs from the quantum mechanical decay of metastable strings that carry three units (6π/e) of Dirac magnetic charge.