We are all the Cosmic-Ray Extremely Distributed Observatory

Dhital, N.; Homola, P.; Jarvis, J. F.; Poznański, Piotr; Cheminant, Kévin Almeida; Bratek, Łukasz; Bretz, T.; Góra, Dariusz; Jagoda, Paweł; Jałocha, J.; Kopański, Konrad; Lemanski, D.; Magryś, Marek; Nazari, V.; Niedzwiedzki, J.; Nocun, M.; Noga, W.; Oziȩbło, A.; Smelcerz, Katarzyna; Smolek, K.; Stasielak, J.; Stuglik, Sławomir; Sułek, M.; Sushchov, Oleksandr; Zamora-Saá, Jilberto

doi:10.48550/arxiv.1709.05196

Cited by 4 publications

(9 citation statements)

References 32 publications

(21 reference statements)

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“…During the completion of this work the papers [88,89,90] appeared. The results of [88] are related to our discussion in section 3, and in the cases of overlap between the two papers our results agree, except for a sign in the vector energy-momentum tensor affecting the vector amplitudes.…”

Section: Higgs Inflation Pidmsmentioning

confidence: 99%

Theory and phenomenology of Planckian interacting massive particles as dark matter

Garny

Palessandro

Sandora

et al. 2018

J. Cosmol. Astropart. Phys.

138

198

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Planckian Interacting Dark Matter (PIDM) is a minimal scenario of dark matter assuming only gravitational interactions with the standard model and with only one free parameter, the PIDM mass. PIDM can be successfully produced by gravitational scattering in the thermal plasma of the Standard Model sector after inflation in the PIDM mass range from TeV up to the GUT scale, if the reheating temperature is sufficiently high. The minimal assumption of a GUT scale PIDM mass can be tested in the future by measurements of the primordial tensor-to-scalar ratio. While large primordial tensor modes would be in tension with the QCD axion as dark matter in a large mass range, it would favour the PIDM as a minimal alternative to WIMPs. Here we generalise the previously studied scalar PIDM scenario to the case of fermion, vector and tensor PIDM scenarios, and show that the phenomenology is nearly identical, independent of the spin of the PIDM. We also consider the specific realisation of the PIDM as the Kaluza-Klein excitation of the graviton in orbifold compactifications of string theory, as well as in models of monodromy inflation and in Higgs inflation. Finally we discuss the possibility of indirect detection of PIDM through non-perturbative decay.

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Section: Higgs Inflation Pidmsmentioning

confidence: 99%

Theory and phenomenology of Planckian interacting massive particles as dark matter

Garny

Palessandro

Sandora

et al. 2018

J. Cosmol. Astropart. Phys.

138

198

View full text Add to dashboard Cite

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“…CREDO wants to rely not only on specialized detectors, such as those found in professional observatories (eg. Pierre Auger), which are available only to the scientific staff, but also on detectors that could be used by people who are not necessarily scientists (citizen science) [1]. Detectors that could be used in a large-scale experiment should be generally available, easy to use, and above allcheap.…”

Section: Introductionmentioning

confidence: 99%

A communication solution for portable detectors of the Cosmic Ray Extremely Distributed Observatory

Smelcerz¹,

Kopański²,

Noga³

et al. 2019

Preprint

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The search for Cosmic-Ray Ensembles (CRE), groups of correlated cosmic rays that might be distributed over very large areas, even of the size of the planet, requires a globally spread and dense network of detectors, as proposed by the Cosmic-Ray Extremely Distributed Observatory (CREDO) Collaboration. This proposal motivates an effort towards exploring the potential of using even very much diversified detection technologies within one system, with detection units located even in hard-to-reach places, where, nevertheless, the sensors could work independently -without human intervention. For these reasons we have developed a dedicated communication solution enabling the connection of many different types of detectors, in a range of environments. The proposed data transmission system uses radio waves as an information carrier on the 169MHz frequency band in a contrast to the typical commercially used frequencies in a IoT systems (868MHz). The connectivity within the system is based on the star topology, which ensures the least energy consumption. The solution is now being prepared to being implemented using the prototype detection system based on the CosmicWatch open hardware design: a portable, pocket size, and economy particle detector using the scintillation technique. Our prototype detector is equipped with a dedicated software that integrates it with the already operational CREDO server system.

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“…A third scenario allowing to circumvent this limit is the Lorentz invariance violation [28][29][30][31][32][33][34][35][36], which is already constrained by astrophysical experiments (see e.g. [37]) and can be further tested with global cosmic-ray analyses, as proposed by Cosmic Rays Extremely Distributed Observatory (CREDO) Collaboration [38][39][40], e.g. by considering cascades produced by primary ultra high energy photons in the photon decay scenario (see [39] and references therein).…”

Section: Introductionmentioning

confidence: 99%

“…[37]) and can be further tested with global cosmic-ray analyses, as proposed by Cosmic Rays Extremely Distributed Observatory (CREDO) Collaboration [38][39][40], e.g. by considering cascades produced by primary ultra high energy photons in the photon decay scenario (see [39] and references therein). It is worthwhile to note that the latter model implies non-observation of single UHE photons on Earth, as their lifetimes would be extremely short, of the order of 1 second (see e.g.…”

Section: Introductionmentioning

confidence: 99%

Limits on beyond standard model messengers as ultra high energy cosmic rays

Castillo-Felisola¹,

Corral²,

Homola³

et al. 2017

Preprint

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Up to date, there is no consensus regarding the origin of ultra high energy cosmic rays (UHECR) beyond the Greisen-Zatsepin-Kuzmin (GZK) limit. In order for these UHECR to reach the Earth, an extremely suppressed interaction between them and the cosmic microwave background (CMB) is required, which is impossible for standard model (SM) particles, except neutrinos. In this letter, we present constraints on the parameter space of models involving axion-like particles and dark photons, as candidates for UHECRs, by assuming that these particles can traverse the visible Universe without decaying. In the case of axion-like particles, the constraints are tighter than those given in previous works. We present for the first time constraints on the parameter space of dark photon models, by considering their kinetic term mixing with SM photons.

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We are all the Cosmic-Ray Extremely Distributed Observatory

Cited by 4 publications

References 32 publications

Theory and phenomenology of Planckian interacting massive particles as dark matter

Theory and phenomenology of Planckian interacting massive particles as dark matter

A communication solution for portable detectors of the Cosmic Ray Extremely Distributed Observatory

Limits on beyond standard model messengers as ultra high energy cosmic rays

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