WIMP-nucleon cross-section results from the second science run of ZEPLIN-III

D. Yu Akimov; H. M. Araújo; E. J. Barnes; V. A. Belov; A. Bewick; A. A. Burenkov; V. Chepel; A. Currie; L. DeViveiros; B. Edwards; C. Ghag; A. Hollingsworth; M. Horn; W. G. Jones; G. E. Kalmus; A. S. Kobyakin; A. G. Kovalenko; V. N. Lebedenko; A. Lindote; M. I. Lopes; R. Lüscher; P. Majewski; A. St J. Murphy; F. Neves; S. M. Paling; J. Pinto da Cunha; R. Preece; J. J. Quenby; L. Reichhart; P. R. Scovell; C. Silva; V. N. Solovov; N. J.T. Smith; V. N. Stekhanov; T. J. Sumner; C. Thorne; R. J. Walker

doi:10.1016/j.physletb.2012.01.064

WIMP-nucleon cross-section results from the second science run of ZEPLIN-III

D. Yu Akimov, H. M. Araújo, E. J. Barnes, V. A. Belov, A. Bewick, A. A. Burenkov, V. Chepel, A. Currie, L. DeViveiros, B. Edwards, C. Ghag, A. Hollingsworth, M. Horn, W. G. Jones, G. E. Kalmus, A. S. Kobyakin, A. G. Kovalenko, V. N. Lebedenko, A. Lindote, M. I. LopesR. Lüscher, P. Majewski, A. St J. Murphy, F. Neves, S. M. Paling, J. Pinto da Cunha, R. Preece, J. J. Quenby, L. Reichhart, P. R. Scovell, C. Silva, V. N. Solovov, N. J.T. Smith, V. N. Stekhanov, T. J. Sumner, C. Thorne, R. J. Walker

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Abstract

We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at the Boulby Underground Laboratory. A raw fiducial exposure of 1344 kg{dot operator}days was accrued over 319 days of continuous operation between June 2010 and May 2011. A total of eight events was observed in the signal acceptance region in the nuclear recoil energy range 7-29 keV, which is compatible with background expectations. This allows the exclusion of the scalar cross-section above 4.8×10 ^-8 pb near 50 GeV/c ² WIMP mass with 90% confidence. Combined with data from the first run, this result improves to 3.9×10 ^-8 pb. The corresponding WIMP-neutron spin-dependent cross-section limit is 8.0×10 ^-3 pb. The ZEPLIN programme reaches thus its conclusion at Boulby, having deployed and exploited successfully three liquid xenon experiments of increasing reach.

Original language	English (US)
Pages (from-to)	14-20
Number of pages	7
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	709
Issue number	1-2
DOIs	https://doi.org/10.1016/j.physletb.2012.01.064
State	Published - Mar 13 2012

All Science Journal Classification (ASJC) codes

Nuclear and High Energy Physics

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10.1016/j.physletb.2012.01.064

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Akimov, D. Y., Araújo, H. M., Barnes, E. J., Belov, V. A., Bewick, A., Burenkov, A. A., Chepel, V., Currie, A., DeViveiros, L., Edwards, B., Ghag, C., Hollingsworth, A., Horn, M., Jones, W. G., Kalmus, G. E., Kobyakin, A. S., Kovalenko, A. G., Lebedenko, V. N., Lindote, A., ... Walker, R. J. (2012). WIMP-nucleon cross-section results from the second science run of ZEPLIN-III. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 709(1-2), 14-20. https://doi.org/10.1016/j.physletb.2012.01.064

@article{8a38e434eec943dcb195ff8174bab404,

title = "WIMP-nucleon cross-section results from the second science run of ZEPLIN-III",

abstract = "We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at the Boulby Underground Laboratory. A raw fiducial exposure of 1344 kg\{dot operator\}days was accrued over 319 days of continuous operation between June 2010 and May 2011. A total of eight events was observed in the signal acceptance region in the nuclear recoil energy range 7-29 keV, which is compatible with background expectations. This allows the exclusion of the scalar cross-section above 4.8×10 -8 pb near 50 GeV/c 2 WIMP mass with 90\% confidence. Combined with data from the first run, this result improves to 3.9×10 -8 pb. The corresponding WIMP-neutron spin-dependent cross-section limit is 8.0×10 -3 pb. The ZEPLIN programme reaches thus its conclusion at Boulby, having deployed and exploited successfully three liquid xenon experiments of increasing reach.",

author = "Akimov, \{D. Yu\} and Ara{\'u}jo, \{H. M.\} and Barnes, \{E. J.\} and Belov, \{V. A.\} and A. Bewick and Burenkov, \{A. A.\} and V. Chepel and A. Currie and L. DeViveiros and B. Edwards and C. Ghag and A. Hollingsworth and M. Horn and Jones, \{W. G.\} and Kalmus, \{G. E.\} and Kobyakin, \{A. S.\} and Kovalenko, \{A. G.\} and Lebedenko, \{V. N.\} and A. Lindote and Lopes, \{M. I.\} and R. L{\"u}scher and P. Majewski and Murphy, \{A. St J.\} and F. Neves and Paling, \{S. M.\} and \{Pinto da Cunha\}, J. and R. Preece and Quenby, \{J. J.\} and L. Reichhart and Scovell, \{P. R.\} and C. Silva and Solovov, \{V. N.\} and Smith, \{N. J.T.\} and Stekhanov, \{V. N.\} and Sumner, \{T. J.\} and C. Thorne and Walker, \{R. J.\}",

note = "Funding Information: The UK groups acknowledge support from the Science \& Technology Facilities Council (STFC) for the ZEPLIN-III project and for operation of the Boulby laboratory . LIP-Coimbra acknowledges financial support from Funda{\c c}{\~a}o para a Ci{\^e}ncia e a Tecnologia (FCT) through project grant CERN/FP/116374/2010 and postdoctoral grants SFRH/BPD/27054/2006 , /47320/2008 , /63096/2009 and /73676/2010 . ITEP acknowledge support from the Russian Foundation of Basic Research (grant 08-02-91851 KO\_a ) and SC Rosatom (H.4e.45.90.11.1059 from 10.03.2011). We are also grateful for support provided jointly to ITEP and Imperial from the UK Royal Society . ZEPLIN-III was hosted by Cleveland Potash Ltd at the Boulby Mine and we thank CPL management and staff for their long-standing support. We also express our gratitude to the Boulby facility staff for their dedication. The University of Edinburgh is a charitable body registered in Scotland (SC005336).",

year = "2012",

month = mar,

day = "13",

doi = "10.1016/j.physletb.2012.01.064",

language = "English (US)",

volume = "709",

pages = "14--20",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

number = "1-2",

}

Akimov, DY, Araújo, HM, Barnes, EJ, Belov, VA, Bewick, A, Burenkov, AA, Chepel, V, Currie, A, DeViveiros, L, Edwards, B, Ghag, C, Hollingsworth, A, Horn, M, Jones, WG, Kalmus, GE, Kobyakin, AS, Kovalenko, AG, Lebedenko, VN, Lindote, A, Lopes, MI, Lüscher, R, Majewski, P, Murphy, ASJ, Neves, F, Paling, SM, Pinto da Cunha, J, Preece, R, Quenby, JJ, Reichhart, L, Scovell, PR, Silva, C, Solovov, VN, Smith, NJT, Stekhanov, VN, Sumner, TJ, Thorne, C & Walker, RJ 2012, 'WIMP-nucleon cross-section results from the second science run of ZEPLIN-III', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 709, no. 1-2, pp. 14-20. https://doi.org/10.1016/j.physletb.2012.01.064

TY - JOUR

T1 - WIMP-nucleon cross-section results from the second science run of ZEPLIN-III

AU - Akimov, D. Yu

AU - Araújo, H. M.

AU - Barnes, E. J.

AU - Belov, V. A.

AU - Bewick, A.

AU - Burenkov, A. A.

AU - Chepel, V.

AU - Currie, A.

AU - DeViveiros, L.

AU - Edwards, B.

AU - Ghag, C.

AU - Hollingsworth, A.

AU - Horn, M.

AU - Jones, W. G.

AU - Kalmus, G. E.

AU - Kobyakin, A. S.

AU - Kovalenko, A. G.

AU - Lebedenko, V. N.

AU - Lindote, A.

AU - Lopes, M. I.

AU - Lüscher, R.

AU - Majewski, P.

AU - Murphy, A. St J.

AU - Neves, F.

AU - Paling, S. M.

AU - Pinto da Cunha, J.

AU - Preece, R.

AU - Quenby, J. J.

AU - Reichhart, L.

AU - Scovell, P. R.

AU - Silva, C.

AU - Solovov, V. N.

AU - Smith, N. J.T.

AU - Stekhanov, V. N.

AU - Sumner, T. J.

AU - Thorne, C.

AU - Walker, R. J.

N1 - Funding Information: The UK groups acknowledge support from the Science & Technology Facilities Council (STFC) for the ZEPLIN-III project and for operation of the Boulby laboratory . LIP-Coimbra acknowledges financial support from Fundação para a Ciência e a Tecnologia (FCT) through project grant CERN/FP/116374/2010 and postdoctoral grants SFRH/BPD/27054/2006 , /47320/2008 , /63096/2009 and /73676/2010 . ITEP acknowledge support from the Russian Foundation of Basic Research (grant 08-02-91851 KO_a ) and SC Rosatom (H.4e.45.90.11.1059 from 10.03.2011). We are also grateful for support provided jointly to ITEP and Imperial from the UK Royal Society . ZEPLIN-III was hosted by Cleveland Potash Ltd at the Boulby Mine and we thank CPL management and staff for their long-standing support. We also express our gratitude to the Boulby facility staff for their dedication. The University of Edinburgh is a charitable body registered in Scotland (SC005336).

PY - 2012/3/13

Y1 - 2012/3/13

N2 - We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at the Boulby Underground Laboratory. A raw fiducial exposure of 1344 kg{dot operator}days was accrued over 319 days of continuous operation between June 2010 and May 2011. A total of eight events was observed in the signal acceptance region in the nuclear recoil energy range 7-29 keV, which is compatible with background expectations. This allows the exclusion of the scalar cross-section above 4.8×10 -8 pb near 50 GeV/c 2 WIMP mass with 90% confidence. Combined with data from the first run, this result improves to 3.9×10 -8 pb. The corresponding WIMP-neutron spin-dependent cross-section limit is 8.0×10 -3 pb. The ZEPLIN programme reaches thus its conclusion at Boulby, having deployed and exploited successfully three liquid xenon experiments of increasing reach.

AB - We report experimental upper limits on WIMP-nucleon elastic scattering cross sections from the second science run of ZEPLIN-III at the Boulby Underground Laboratory. A raw fiducial exposure of 1344 kg{dot operator}days was accrued over 319 days of continuous operation between June 2010 and May 2011. A total of eight events was observed in the signal acceptance region in the nuclear recoil energy range 7-29 keV, which is compatible with background expectations. This allows the exclusion of the scalar cross-section above 4.8×10 -8 pb near 50 GeV/c 2 WIMP mass with 90% confidence. Combined with data from the first run, this result improves to 3.9×10 -8 pb. The corresponding WIMP-neutron spin-dependent cross-section limit is 8.0×10 -3 pb. The ZEPLIN programme reaches thus its conclusion at Boulby, having deployed and exploited successfully three liquid xenon experiments of increasing reach.

UR - https://www.scopus.com/pages/publications/84857047796

UR - https://www.scopus.com/inward/citedby.url?scp=84857047796&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2012.01.064

DO - 10.1016/j.physletb.2012.01.064

M3 - Article

AN - SCOPUS:84857047796

SN - 0370-2693

VL - 709

SP - 14

EP - 20

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

IS - 1-2

ER -

WIMP-nucleon cross-section results from the second science run of ZEPLIN-III

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