Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment

The LUX-ZEPLIN (LZ) Collaboration; Alex Murphy

doi:10.1103/PhysRevD.101.052002

Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment

The LUX-ZEPLIN (LZ) Collaboration, Alex Murphy

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract / Description of output

LUX-ZEPLIN (LZ) is a next generation dark matter direct detection experiment that will operate 4850 feet underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. Using a two-phase xenon detector with an active mass of 7 tonnes, LZ will search primarily for low-energy interactions with Weakly Interacting Massive Particles (WIMPs), which are hypothesized to make up the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6 tonne ducial mass, LZ is projected to exclude at 90% condence level spin-independent WIMP-nucleon cross sections above 1:410􀀀48 cm2 for a 40 GeV=c2 mass WIMP. Additionally, a 5 discovery potential is projected reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2:310􀀀43 cm2 (7:110􀀀42 cm2) for a 40 GeV=c2 mass WIMP is expected. With construction well underway, LZ is on track for underground installation at SURF in 2019 and will start collecting data in 2020.

Original language	English
Article number	052002
Number of pages	14
Journal	Physical Review D
Volume	101
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevD.101.052002
Publication status	Published - 4 Mar 2020

Keywords / Materials (for Non-textual outputs)

astro-ph.IM
astro-ph.CO
hep-ex
physics.ins-det

Access to Document

10.1103/PhysRevD.101.052002

projected-wimp-sensitivity-v3.7.3Accepted author manuscript, 2.08 MB

The LUX-ZEPLIN (LZ) Dark Matter Search
Murphy, A.
STFC
1/04/15 → 30/09/19
Project: Research

Cite this

@article{e573fa8840534a5f82d80754b6ee2617,

title = "Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment",

abstract = "LUX-ZEPLIN (LZ) is a next generation dark matter direct detection experiment that will operate 4850 feet underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. Using a two-phase xenon detector with an active mass of 7 tonnes, LZ will search primarily for low-energy interactions with Weakly Interacting Massive Particles (WIMPs), which are hypothesized to make up the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6 tonne ducial mass, LZ is projected to exclude at 90% condence level spin-independent WIMP-nucleon cross sections above 1:410􀀀48 cm2 for a 40 GeV=c2 mass WIMP. Additionally, a 5 discovery potential is projected reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2:310􀀀43 cm2 (7:110􀀀42 cm2) for a 40 GeV=c2 mass WIMP is expected. With construction well underway, LZ is on track for underground installation at SURF in 2019 and will start collecting data in 2020.",

keywords = "astro-ph.IM, astro-ph.CO, hep-ex, physics.ins-det",

author = "{The LUX-ZEPLIN (LZ) Collaboration} and Akerib, {D. S.} and Akerlof, {C. W.} and Alsum, {S. K.} and Ara{\'u}jo, {H. M.} and M. Arthurs and X. Bai and Bailey, {A. J.} and J. Balajthy and S. Balashov and D. Bauer and J. Belle and P. Beltrame and T. Benson and Bernard, {E. P.} and Biesiadzinski, {T. P.} and Boast, {K. E.} and B. Boxer and P. Br{\'a}s and Buckley, {J. H.} and Bugaev, {V. V.} and S. Burdin and Busenitz, {J. K.} and C. Carels and Carlsmith, {D. L.} and B. Carlson and Carmona-Benitez, {M. C.} and C. Chan and A. Cole and Dobson, {J. E. Y.} and C. Ghag and Hall, {C. R.} and Kim, {Y. D.} and J. Lee and J. Li and J. Liao and J. Lin and X. Liu and Y. Meng and E. Morrison and Alex Murphy and A. Richards and Rodrigues, {J. P.} and Stark, {M. R.} and Taylor, {W. C.} and R. Taylor and Taylor, {D. J.} and Thomas, {K. J.} and Watson, {J. R.} and White, {D. T.} and J. Yin and I. Young",

note = "14 pages, 11 figures",

year = "2020",

month = mar,

day = "4",

doi = "10.1103/PhysRevD.101.052002",

language = "English",

volume = "101",

journal = "Physical Review D",

issn = "1550-7998",

publisher = "American Physical Society",

number = "5",

}

TY - JOUR

T1 - Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment

AU - The LUX-ZEPLIN (LZ) Collaboration

AU - Akerib, D. S.

AU - Akerlof, C. W.

AU - Alsum, S. K.

AU - Araújo, H. M.

AU - Arthurs, M.

AU - Bai, X.

AU - Bailey, A. J.

AU - Balajthy, J.

AU - Balashov, S.

AU - Bauer, D.

AU - Belle, J.

AU - Beltrame, P.

AU - Benson, T.

AU - Bernard, E. P.

AU - Biesiadzinski, T. P.

AU - Boast, K. E.

AU - Boxer, B.

AU - Brás, P.

AU - Buckley, J. H.

AU - Bugaev, V. V.

AU - Burdin, S.

AU - Busenitz, J. K.

AU - Carels, C.

AU - Carlsmith, D. L.

AU - Carlson, B.

AU - Carmona-Benitez, M. C.

AU - Chan, C.

AU - Cole, A.

AU - Dobson, J. E. Y.

AU - Ghag, C.

AU - Hall, C. R.

AU - Kim, Y. D.

AU - Lee, J.

AU - Li, J.

AU - Liao, J.

AU - Lin, J.

AU - Liu, X.

AU - Meng, Y.

AU - Morrison, E.

AU - Murphy, Alex

AU - Richards, A.

AU - Rodrigues, J. P.

AU - Stark, M. R.

AU - Taylor, W. C.

AU - Taylor, R.

AU - Taylor, D. J.

AU - Thomas, K. J.

AU - Watson, J. R.

AU - White, D. T.

AU - Yin, J.

AU - Young, I.

N1 - 14 pages, 11 figures

PY - 2020/3/4

Y1 - 2020/3/4

N2 - LUX-ZEPLIN (LZ) is a next generation dark matter direct detection experiment that will operate 4850 feet underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. Using a two-phase xenon detector with an active mass of 7 tonnes, LZ will search primarily for low-energy interactions with Weakly Interacting Massive Particles (WIMPs), which are hypothesized to make up the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6 tonne ducial mass, LZ is projected to exclude at 90% condence level spin-independent WIMP-nucleon cross sections above 1:410􀀀48 cm2 for a 40 GeV=c2 mass WIMP. Additionally, a 5 discovery potential is projected reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2:310􀀀43 cm2 (7:110􀀀42 cm2) for a 40 GeV=c2 mass WIMP is expected. With construction well underway, LZ is on track for underground installation at SURF in 2019 and will start collecting data in 2020.

AB - LUX-ZEPLIN (LZ) is a next generation dark matter direct detection experiment that will operate 4850 feet underground at the Sanford Underground Research Facility (SURF) in Lead, South Dakota, USA. Using a two-phase xenon detector with an active mass of 7 tonnes, LZ will search primarily for low-energy interactions with Weakly Interacting Massive Particles (WIMPs), which are hypothesized to make up the dark matter in our galactic halo. In this paper, the projected WIMP sensitivity of LZ is presented based on the latest background estimates and simulations of the detector. For a 1000 live day run using a 5.6 tonne ducial mass, LZ is projected to exclude at 90% condence level spin-independent WIMP-nucleon cross sections above 1:410􀀀48 cm2 for a 40 GeV=c2 mass WIMP. Additionally, a 5 discovery potential is projected reaching cross sections below the exclusion limits of recent experiments. For spin-dependent WIMP-neutron(-proton) scattering, a sensitivity of 2:310􀀀43 cm2 (7:110􀀀42 cm2) for a 40 GeV=c2 mass WIMP is expected. With construction well underway, LZ is on track for underground installation at SURF in 2019 and will start collecting data in 2020.

KW - astro-ph.IM

KW - astro-ph.CO

KW - hep-ex

KW - physics.ins-det

U2 - 10.1103/PhysRevD.101.052002

DO - 10.1103/PhysRevD.101.052002

M3 - Article

SN - 1550-7998

VL - 101

JO - Physical Review D

JF - Physical Review D

IS - 5

M1 - 052002

ER -

Projected WIMP sensitivity of the LUX-ZEPLIN (LZ) dark matter experiment

Abstract / Description of output

Keywords / Materials (for Non-textual outputs)

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The LUX-ZEPLIN (LZ) Dark Matter Search

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