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Directional Detection of Light Dark Matter with Polar Materials
/ Griffin, Sinead (UC, Berkeley ; LBL, Berkeley) ; Knapen, Simon (UC, Berkeley ; LBL, Berkeley) ; Lin, Tongyan (UC, Berkeley ; LBL, Berkeley ; UC, San Diego) ; Zurek, Kathryn M. (UC, Berkeley ; LBL, Berkeley ; CERN)
We consider the direct detection of dark matter (DM) with polar materials, where single production of optical or acoustic phonons gives excellent reach to scattering of sub-MeV DM for both scalar and vector mediators. Using Density Functional Theory (DFT), we calculate the material-specific matrix elements, focusing on GaAs and sapphire, and show that DM scattering in an anisotropic crystal such as sapphire features a strong directional dependence. [...]
arXiv:1807.10291.-
2018-12-28 - 27 p.
- Published in : Phys. Rev. D 98 (2018) 115034
Article from SCOAP3: PDF; Fulltext: PDF;
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Direct Detection of Bound States of Asymmetric Dark Matter
/ Coskuner, Ahmet (LBL, Berkeley ; UC, Berkeley) ; Grabowska, Dorota M. (LBL, Berkeley ; UC, Berkeley) ; Knapen, Simon (LBL, Berkeley ; UC, Berkeley ; Princeton, Inst. Advanced Study) ; Zurek, Kathryn M. (LBL, Berkeley ; UC, Berkeley ; CERN)
We study the reach of direct detection experiments for large bound states (containing $10^4$ or more dark nucleons) of Asymmetric Dark Matter. We consider ordinary nuclear recoils, excitation of collective modes (phonons), and electronic excitations, paying careful attention to the impact of the energy threshold of the experiment. [...]
arXiv:1812.07573.-
2019-08-29 - 23 p.
- Published in : Phys. Rev. D 100 (2019) 035025
Article from SCOAP3: PDF; Fulltext: PDF;
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Leveraging the ALICE/L3 cavern for long-lived exotics
/ Gligorov, Vladimir V. (Paris U., VI-VII) ; Knapen, Simon (LBL, Berkeley ; UC, Berkeley ; Princeton, Inst. Advanced Study) ; Nachman, Benjamin (LBL, Berkeley) ; Papucci, Michele (LBL, Berkeley ; UC, Berkeley ; CERN) ; Robinson, Dean J. (LBL, Berkeley ; UC, Santa Cruz)
Run 5 of the HL-LHC era (and beyond) may provide new opportunities to search for physics beyond the standard model (BSM) at interaction point 2 (IP2). In particular, taking advantage of the existing ALICE detector and infrastructure provides an opportunity to search for displaced decays of beyond standard model long-lived particles (LLPs). [...]
arXiv:1810.03636.-
2019-01-17 - 14 p.
- Published in : Phys. Rev. D 99 (2019) 015023
Article from SCOAP3: PDF; Fulltext: PDF;
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Optimal use of Charge Information for the HL-LHC Pixel Detector Readout
/ Chen, Yitian (UC, Berkeley ; Cornell U., Phys. Dept. ; LBL, Berkeley) ; Frangipane, Evan (UC, Berkeley ; LBL, Berkeley) ; Garcia-Sciveres, Maurice (LBL, Berkeley) ; Jeanty, Laura (LBL, Berkeley) ; Nachman, Benjamin (LBL, Berkeley) ; Pagan Griso, Simone (LBL, Berkeley) ; Wang, Fuyue (LBL, Berkeley ; Tsinghua U., Beijing)
The pixel detectors for the High Luminosity upgrades of the ATLAS and CMS detectors will preserve digitized charge information in spite of extremely high hit rates. Both circuit physical size and output bandwidth will limit the number of bits to which charge can be digitized and stored. [...]
arXiv:1710.02582.-
2018-09-11 - 14 p.
Preprint: PDF;
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5.
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Resurrecting Hitomi for Decaying Dark Matter and Forecasting Leading Sensitivity for XRISM
/ Dessert, Christopher (New York U., CCPP ; Flatiron Inst., New York) ; Ning, Orion (UC, Berkeley ; LBL, Berkeley) ; Rodd, Nicholas L. (CERN) ; Safdi, Benjamin R. (UC, Berkeley ; LBL, Berkeley)
The Hitomi X-ray satellite mission carried unique high-resolution spectrometers that were set to revolutionize the search for sterile neutrino dark matter (DM) by looking for narrow X-ray lines arising from DM decays. Unfortunately, the satellite was lost shortly after launch, and to-date the only analysis using Hitomi for DM decay used data taken towards the Perseus cluster. [...]
arXiv:2305.17160; CERN-TH-2023-088.-
2024-05-24 - 7 p.
- Published in : Phys. Rev. Lett. 132 (2024) 211002
Fulltext: PDF;
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Cosmology at high redshift — a probe of fundamental physics
/ Sailer, Noah (UC, Berkeley) ; Castorina, Emanuele (Milan U. ; CERN) ; Ferraro, Simone (LBNL, Berkeley ; UC, Berkeley (main)) ; White, Martin (UC, Berkeley ; LBNL, Berkeley)
An observational program focused on the high redshift ($2<z<6$) Universe has the opportunity to dramatically improve over upcoming LSS and CMB surveys on measurements of both the standard cosmological model and its extensions. Using a Fisher matrix formalism that builds upon recent advances in Lagrangian perturbation theory, we forecast constraints for future spectroscopic and 21-cm surveys on the standard cosmological model, curvature, neutrino mass, relativistic species, primordial features, primordial non-Gaussianity, dynamical dark energy, and gravitational slip. [...]
arXiv:2106.09713.-
2021-12-21 - 62 p.
- Published in : JCAP 2112 (2021) 049
Fulltext: PDF;
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Dark matter direct detection from the single phonon to the nuclear recoil regime
/ Campbell-Deem, Brian (UC, San Diego) ; Knapen, Simon (LBL, Berkeley ; UC, Berkeley ; CERN) ; Lin, Tongyan (UC, San Diego) ; Villarama, Ethan (UC, San Diego)
In most direct detection experiments, the free nuclear recoil description of dark matter scattering breaks down for masses $\lesssim$ 100 MeV, or when the recoil energy is comparable to a few times the typical phonon energy. For dark matter lighter than 1 MeV, scattering via excitation of a single phonon dominates and has been computed previously, but for the intermediate mass range or higher detector thresholds, multiphonon processes dominate. [...]
arXiv:2205.02250.-
2022-08-01 - 28 p.
- Published in : Phys. Rev. D 106 (2022) 036019
Fulltext: 2205.02250 - PDF; PhysRevD.106.036019 - PDF;
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10.
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Snowmass2021 Cosmic Frontier: Modeling, statistics, simulations, and computing needs for direct dark matter detection
/ Kahn, Yonatan (Illinois U., Urbana) ; Monzani, Maria Elena (SLAC ; KIPAC, Menlo Park ; Vatican Astron. Observ.) ; Palladino, Kimberly J. (Oxford U.) ; Anderson, Tyler (SLAC ; KIPAC, Menlo Park) ; Bard, Deborah (LBL, Berkeley) ; Baxter, Daniel (Fermilab) ; Buuck, Micah (SLAC ; KIPAC, Menlo Park) ; Cartaro, Concetta (SLAC ; KIPAC, Menlo Park) ; Collar, Juan I. (Chicago U., EFI) ; Diamond, Miriam (Toronto U.) et al.
This paper summarizes the modeling, statistics, simulation, and computing needs of direct dark matter detection experiments in the next decade..
arXiv:2203.07700 ; FERMILAB-CONF-22-173-PPD.
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Fermilab Library Server - eConf - Fulltext - Fulltext
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