Searching for low mass dark matter via phonon creation in superfluid 4He

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Searching for low mass dark matter via phonon creation in superfluid 4He. / Baym, Gordon; Beck, D. H.; Filippini, Jeffrey P.; Pethick, C. J.; Shelton, Jessie.

I: Physical Review D, Bind 102, Nr. 3, 035014, 11.08.2020.

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt

Harvard

Baym, G, Beck, DH, Filippini, JP, Pethick, CJ & Shelton, J 2020, 'Searching for low mass dark matter via phonon creation in superfluid 4He', Physical Review D, bind 102, nr. 3, 035014. https://doi.org/10.1103/PhysRevD.102.035014

APA

Baym, G., Beck, D. H., Filippini, J. P., Pethick, C. J., & Shelton, J. (2020). Searching for low mass dark matter via phonon creation in superfluid 4He. Physical Review D, 102(3), [035014]. https://doi.org/10.1103/PhysRevD.102.035014

Vancouver

Baym G, Beck DH, Filippini JP, Pethick CJ, Shelton J. Searching for low mass dark matter via phonon creation in superfluid 4He. Physical Review D. 2020 aug. 11;102(3). 035014. https://doi.org/10.1103/PhysRevD.102.035014

Author

Baym, Gordon ; Beck, D. H. ; Filippini, Jeffrey P. ; Pethick, C. J. ; Shelton, Jessie. / Searching for low mass dark matter via phonon creation in superfluid 4He. I: Physical Review D. 2020 ; Bind 102, Nr. 3.

Bibtex

@article{ca69580fa8b14a04a3850ba4ed591e1c,
title = "Searching for low mass dark matter via phonon creation in superfluid 4He",
abstract = "We consider the scattering of dark matter particles from superfluid liquid He-4, which has been proposed as a target for their direct detection. Focusing on dark matter masses below similar to 1 MeV, we demonstrate from sum-rule arguments the importance of the production of single phonons with energies. omega less than or similar to 1 meV. We show further that the anomalous dispersion of phonons in liquid He-4 at low pressures [i.e., d(2)omega(q)/dq(2) > 0, where q and omega(q) are the phonon momentum and energy] has the important consequence that a single phonon will decay over a relatively short distance into a shower of lower-energy phonons centered on the direction of the original phonon. Thus, the experimental challenge in this regime is to detect a shower of low-energy phonons, not just a single phonon. Additional information from the distribution of phonons in such a shower could enhance the determination of the dark matter mass.",
keywords = "THERMAL-CONDUCTIVITY, LIQUID-HE-4, DISPERSION, SCATTERING, TRANSPORT, SPECTRUM",
author = "Gordon Baym and Beck, {D. H.} and Filippini, {Jeffrey P.} and Pethick, {C. J.} and Jessie Shelton",
year = "2020",
month = aug,
day = "11",
doi = "10.1103/PhysRevD.102.035014",
language = "English",
volume = "102",
journal = "Physical Review D",
issn = "2470-0010",
publisher = "American Physical Society",
number = "3",

}

RIS

TY - JOUR

T1 - Searching for low mass dark matter via phonon creation in superfluid 4He

AU - Baym, Gordon

AU - Beck, D. H.

AU - Filippini, Jeffrey P.

AU - Pethick, C. J.

AU - Shelton, Jessie

PY - 2020/8/11

Y1 - 2020/8/11

N2 - We consider the scattering of dark matter particles from superfluid liquid He-4, which has been proposed as a target for their direct detection. Focusing on dark matter masses below similar to 1 MeV, we demonstrate from sum-rule arguments the importance of the production of single phonons with energies. omega less than or similar to 1 meV. We show further that the anomalous dispersion of phonons in liquid He-4 at low pressures [i.e., d(2)omega(q)/dq(2) > 0, where q and omega(q) are the phonon momentum and energy] has the important consequence that a single phonon will decay over a relatively short distance into a shower of lower-energy phonons centered on the direction of the original phonon. Thus, the experimental challenge in this regime is to detect a shower of low-energy phonons, not just a single phonon. Additional information from the distribution of phonons in such a shower could enhance the determination of the dark matter mass.

AB - We consider the scattering of dark matter particles from superfluid liquid He-4, which has been proposed as a target for their direct detection. Focusing on dark matter masses below similar to 1 MeV, we demonstrate from sum-rule arguments the importance of the production of single phonons with energies. omega less than or similar to 1 meV. We show further that the anomalous dispersion of phonons in liquid He-4 at low pressures [i.e., d(2)omega(q)/dq(2) > 0, where q and omega(q) are the phonon momentum and energy] has the important consequence that a single phonon will decay over a relatively short distance into a shower of lower-energy phonons centered on the direction of the original phonon. Thus, the experimental challenge in this regime is to detect a shower of low-energy phonons, not just a single phonon. Additional information from the distribution of phonons in such a shower could enhance the determination of the dark matter mass.

KW - THERMAL-CONDUCTIVITY

KW - LIQUID-HE-4

KW - DISPERSION

KW - SCATTERING

KW - TRANSPORT

KW - SPECTRUM

U2 - 10.1103/PhysRevD.102.035014

DO - 10.1103/PhysRevD.102.035014

M3 - Journal article

VL - 102

JO - Physical Review D

JF - Physical Review D

SN - 2470-0010

IS - 3

M1 - 035014

ER -

ID: 247493911