HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization

Abdurashidova, Zara; Aguirre, James E.; Alexander, Paul; Ali, Zaki; Balfour, Yanga; Barkana, Rennan; Beardsley, Adam; Bernardi, Gianni; Billings, Tashalee; Bowman, Judd; Bradley, Richard; Bull, Phillip; Burba, Jacob; Carey, Steven; Carilli, Christopher; Cheng, Carina; DeBoer, David; Dexter, Matthew; Acedo, Eloy de Lera; Dillon, Joshua; Ely, John; Ewall-Wice, Aaron; Fagnoni, Nicolas; Fialkov, Anastasia; Fritz, Randall; Furlanetto, Steven; Gale-Sides, Kingsley; Glendenning, Brian; Gorthi, Deepthi; Greig, Bradley; Grobbelaar, Jasper; Halday, Ziyaad; Hazelton, Bryna; Heimersheim, Stefan; Hewitt, Jacqueline; Hickish, Jack; Jacobs, Daniel; Julius, Austin; Kern, Nicholas; Kerrigan, Joshua; Kittiwisit, Piyanat; Kohn, Saul; Kolopanis, Matthew; Lanman, Adam; La Plante, Paul; Lekalake, Telalo; Lewis, David; Liu, Adrian; Ma, Yin-Zhe; MacMahon, David; Malan, Lourence; Malgas, Cresshim; Maree, Matthys; Martinot, Zachary; Matsetela, Eunice; Mesinger, Andrei; Mirocha, Jordan; Molewa, Mathakane; Morales, Miguel; Mosiane, Tshegofalang; Munoz, Julian; Murray, Steven; Neben, Abraham; Nikolic, Bojan; Nunhokee, Chuneeta Devi; Parsons, Aaron; Patra, Nipanjana; Pieterse, Samantha; Pober, Jonathan; Qin, Yuxiang; Razavi-Ghods, N.; Reis, Itamar; Ringuette, Jon; Robnett, James; Rosie, Kathryn; Santos, Mario; Sikder, Sudipta; Sims, Peter; Smith, Craig; Syce, Angelo; Thyagarajan, Nithyanandan; Williams, Peter; Zheng, Haoxuan

doi:10.48550/arxiv.2108.07282

Cited by 5 publications

(8 citation statements)

References 187 publications

(305 reference statements)

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“…[583][584][585][586], which however can be overcome [587]. The new HERA upper limits [588] on the power spectrum of 21-cm fluctuations in the early Universe neither support nor disfavour the EDGES detection, but future measurements from HERA at lower frequencies will be important for further testing this anomaly.…”

Section: -Cm Absorption Linementioning

confidence: 94%

Unveiling hidden physics at the LHC

et al. 2022

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The field of particle physics is at the crossroads. The discovery of a Higgs-like boson completed the Standard Model (SM), but the lacking observation of convincing resonances Beyond the SM (BSM) offers no guidance for the future of particle physics. On the other hand, the motivation for New Physics has not diminished and is, in fact, reinforced by several striking anomalous results in many experiments. Here we summarise the status of the most significant anomalies, including the most recent results for the flavour anomalies, the multi-lepton anomalies at the LHC, the Higgs-like excess at around 96 GeV, and anomalies in neutrino physics, astrophysics, cosmology, and cosmic rays. While the LHC promises up to 4 $$\hbox {ab}^{-1}$$ ab - 1 of integrated luminosity and far-reaching physics programmes to unveil BSM physics, we consider the possibility that the latter could be tested with present data, but that systemic shortcomings of the experiments and their search strategies may preclude their discovery for several reasons, including: final states consisting in soft particles only, associated production processes, QCD-like final states, close-by SM resonances, and SUSY scenarios where no missing energy is produced. New search strategies could help to unveil the hidden BSM signatures, devised by making use of the CERN open data as a new testing ground. We discuss the CERN open data with its policies, challenges, and potential usefulness for the community. We showcase the example of the CMS collaboration, which is the only collaboration regularly releasing some of its data. We find it important to stress that individuals using public data for their own research does not imply competition with experimental efforts, but rather provides unique opportunities to give guidance for further BSM searches by the collaborations. Wide access to open data is paramount to fully exploit the LHCs potential.

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Section: -Cm Absorption Linementioning

confidence: 94%

Unveiling hidden physics at the LHC

et al. 2022

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show abstract

“…[581][582][583][584], which however can be overcome [585]. The new HERA upper limits [586] on the power spectrum of 21-cm fluctuations in the early Universe neither support nor disfavour the EDGES detection, but future measurements from HERA at lower frequencies will be important for further testing this anomaly.…”

Section: -Cm Absorption Linementioning

confidence: 94%

Unveiling Hidden Physics at the LHC

Fischer¹,

Garcia²,

Antusch³

et al. 2021

Preprint

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The field of particle physics is at the crossroads. The discovery of a Higgs-like boson completed the Standard Model (SM), but the lacking observation of convincing resonances Beyond the SM (BSM) offers no guidance for the future of particle physics. On the other hand, the motivation for New Physics has not diminished and is, in fact, reinforced by several striking anomalous results in many experiments. Here we summarise the status of the most significant anomalies, including the most recent results for the flavour anomalies, the multi-lepton anomalies at the LHC, the Higgs-like excess at around 96 GeV, and anomalies in neutrino physics, astrophysics, cosmology, and cosmic rays.While the LHC promises up to 4 ab −1 of integrated luminosity and far-reaching physics programmes to unveil BSM physics, we consider the possibility that the latter could be tested with present data, but that systemic shortcomings of the experiments and their search strategies may preclude their discovery for several reasons, including: final states consisting in soft particles only, associated production processes, QCD-like final states, close-by SM resonances, and SUSY scenarios where no missing energy is produced.New search strategies could help to unveil the hidden BSM signatures, devised by making use of the CERN open data as a new testing ground. We discuss the CERN open data with its policies, challenges, and potential usefulness for the community. We showcase the example of the CMS collaboration, which is the only collaboration regularly releasing some of its data. We find it important to stress that individuals using public data for their own research does not imply competition with experimental efforts, but rather provides unique opportunities to give guidance for further BSM searches by the collaborations.Wide access to open data is paramount to fully exploit the LHCs potential.

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“…Our extended 21cmFAST enables us to calculate the reionization history varying the primordial running spectral indices and astrophysical parameters. However, the parameter inference with MCMC analysis, which is widely used to obtain constraints in cosmology and reionization [28][29][30][31], requires computational resources so much #2 . To save the calculation time, we construct the fitting function for the free electron fraction at redshift z = 7.3, based on our extended 21cmFAST results.…”

Section: Reionization Calculation With the 21cmfastmentioning

confidence: 99%

Probing the primordial Universe with 21 cm line from cosmic dawn/epoch of reionization

Minoda

Saga

Takahashi

et al. 2022

Publications of the Astronomical Society of Japan

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In the most distant reaches of the Universe, the 21 cm hyperfine transition in neutral hydrogen provides one of the only available tracers of large-scale structure. A number of instruments have been working or are planned to measure the 21 cm line signals, and in particular, the Experiment to Detect the Global EoR Signature (EDGES) has recently reported the first detection of an absorption signal, which corresponds to the 21 cm line global signal at the epoch of reionization (EoR). The future large radio telescope, the Square Kilometre Array (SKA) will be able to deliver the high-precision measurement of the 21 cm line emission/absorption signals. In this paper, we review the current status for the 21 cm line global and fluctuation signals from EoR to the dark ages, and then summarize the recent studies of how we probe the primordial Universe particularly motivated by the recent EDGES result and future observations by SKA. We focus on two applications for constraining cosmology with the EDGES result: constraints on the primordial magnetic fields and those on the primordial power spectrum. We also discuss the potential of future SKA for probing the inflationary Universe, by discussing expected constraints on the primordial power spectrum, its adiabaticity, and primordial non-Gaussianities from future observations of 21 cm fluctuations.

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HERA Phase I Limits on the Cosmic 21-cm Signal: Constraints on Astrophysics and Cosmology During the Epoch of Reionization

Cited by 5 publications

References 187 publications

Unveiling hidden physics at the LHC

Unveiling hidden physics at the LHC

Unveiling Hidden Physics at the LHC

Probing the primordial Universe with 21 cm line from cosmic dawn/epoch of reionization

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