Critical revision of the ZEPLIN-I sensitivity to WIMP interactions

The ZEPLIN collaboration has recently published its first result presenting a maximum sensitivity of $1.1 \times 10^{-6}$ picobarn for a WIMP mass of $\approx$ 60 GeV. The analysis is based on a discrimination method using the different time distribution of scintillation light generated in electron...

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Detalles Bibliográficos
Autores principales: Benoît, A, Chapellier, M, Chardin, G, Dumoulin, L, Eitel, K, Gascon, J, Gerbier, G, Goldbach, C, Jochum, J, de Lesquen, A, Nollez, G, Pröbst, F, Seidel, W
Lenguaje:eng
Publicado: 2005
Materias:
Astrophysics and Astronomy
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2006.04.030
http://cds.cern.ch/record/913045
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author Benoît, A
Chapellier, M
Chardin, G
Dumoulin, L
Eitel, K
Gascon, J
Gerbier, G
Goldbach, C
Jochum, J
de Lesquen, A
Nollez, G
Pröbst, F
Seidel, W
author_facet Benoît, A
Chapellier, M
Chardin, G
Dumoulin, L
Eitel, K
Gascon, J
Gerbier, G
Goldbach, C
Jochum, J
de Lesquen, A
Nollez, G
Pröbst, F
Seidel, W
author_sort Benoît, A
collection CERN
description The ZEPLIN collaboration has recently published its first result presenting a maximum sensitivity of $1.1 \times 10^{-6}$ picobarn for a WIMP mass of $\approx$ 60 GeV. The analysis is based on a discrimination method using the different time distribution of scintillation light generated in electron recoil and nuclear recoil interactions. We show that the methodology followed both for the calibration of the ZEPLIN-I detector response and for the estimation of the discrimination power is not reliable enough to claim any background discrimination at the present stage. The ZEPLIN-I sensitivity appears then to be in the order of 10$^{-3}$ picobarn, three orders of magnitude above the claimed 1.1 10$^{-6}$ picobarn.
id cern-913045
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2005
record_format invenio
spelling cern-9130452019-09-30T06:29:59Zdoi:10.1016/j.physletb.2006.04.030http://cds.cern.ch/record/913045engBenoît, AChapellier, MChardin, GDumoulin, LEitel, KGascon, JGerbier, GGoldbach, CJochum, Jde Lesquen, ANollez, GPröbst, FSeidel, WCritical revision of the ZEPLIN-I sensitivity to WIMP interactionsAstrophysics and AstronomyThe ZEPLIN collaboration has recently published its first result presenting a maximum sensitivity of $1.1 \times 10^{-6}$ picobarn for a WIMP mass of $\approx$ 60 GeV. The analysis is based on a discrimination method using the different time distribution of scintillation light generated in electron recoil and nuclear recoil interactions. We show that the methodology followed both for the calibration of the ZEPLIN-I detector response and for the estimation of the discrimination power is not reliable enough to claim any background discrimination at the present stage. The ZEPLIN-I sensitivity appears then to be in the order of 10$^{-3}$ picobarn, three orders of magnitude above the claimed 1.1 10$^{-6}$ picobarn.astro-ph/0512120DAPNIA-2005-357oai:cds.cern.ch:9130452005-12-06
spellingShingle Astrophysics and Astronomy
Benoît, A
Chapellier, M
Chardin, G
Dumoulin, L
Eitel, K
Gascon, J
Gerbier, G
Goldbach, C
Jochum, J
de Lesquen, A
Nollez, G
Pröbst, F
Seidel, W
Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
title Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
title_full Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
title_fullStr Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
title_full_unstemmed Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
title_short Critical revision of the ZEPLIN-I sensitivity to WIMP interactions
title_sort critical revision of the zeplin-i sensitivity to wimp interactions
topic Astrophysics and Astronomy
url https://dx.doi.org/10.1016/j.physletb.2006.04.030
http://cds.cern.ch/record/913045
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